chore(xep): Move FAST from staging into xep_0484.dart

Reviewed-on: https://codeberg.org/moxxy/moxxmpp/pulls/49

.gitlint

@@ -7,7 +7,7 @@ line-length=72
 [title-trailing-punctuation]
 [title-hard-tab]
 [title-match-regex]
-regex=^((feat|fix|chore|refactor|docs|release|test)\((meta|tests|style|docs|xep|core|example)+(,(meta|tests|style|docs|xep|core|example))*\)|release): [A-Z0-9].*$
+regex=^((feat|fix|chore|refactor|docs|release|test)\((meta|tests|style|docs|xep|core|example|all|flake|ci)+(,(meta|tests|style|docs|xep|core|example|all|flake|ci))*\)|release): [A-Z0-9].*$
 
 
 [body-trailing-whitespace]

.woodpecker.yml

@@ -1,28 +1,49 @@
+when:
+  branch: master
+
 pipeline:
   # Check moxxmpp
   moxxmpp-lint:
-    image: dart:2.18.1
+    image: dart:3.0.7
     commands:
       - cd packages/moxxmpp
-      - dart pub get
+      # Proxy requests to pub.dev using pubcached
+      - PUB_HOSTED_URL=http://172.17.0.1:8000 dart pub get
       - dart analyze --fatal-infos --fatal-warnings
+
   moxxmpp-test:
-    image: dart:2.18.1
+    image: dart:3.0.7
     commands:
       - cd packages/moxxmpp
-      - dart pub get
+      # Proxy requests to pub.dev using pubcached
+      - PUB_HOSTED_URL=http://172.17.0.1:8000 dart pub get
       - dart test
 
   # Check moxxmpp_socket_tcp
   moxxmpp_socket_tcp-lint:
-    image: dart:2.18.1
+    image: dart:3.0.7
     commands:
       - cd packages/moxxmpp_socket_tcp
-      - dart pub get
+      # Proxy requests to pub.dev using pubcached
+      - PUB_HOSTED_URL=http://172.17.0.1:8000 dart pub get
       - dart analyze --fatal-infos --fatal-warnings
+
   # moxxmpp-test:
-  #   image: dart:2.18.1
+  #   image: dart:3.0.7
   #   commands:
   #     - cd packages/moxxmpp
-  #     - dart pub get
+  #     # Proxy requests to pub.dev using pubcached
+  #     - PUB_HOSTED_URL=http://172.17.0.1:8000 dart pub get
   #     - dart test
+
+  notify:
+    image: git.polynom.me/papatutuwawa/woodpecker-xmpp
+    settings:
+      xmpp_tls: 1
+      xmpp_is_muc: 1
+      xmpp_recipient: moxxy-build@muc.moxxy.org
+      xmpp_alias: 2Bot
+    secrets: [ xmpp_jid, xmpp_password, xmpp_server ]
+    when:
+      status:
+        - failure

README.md

@@ -7,7 +7,7 @@ moxxmpp is a XMPP library written purely in Dart for usage in Moxxy.
 
 This package contains the actual XMPP code that is platform-independent.
 
-Documentation is available [here](https://moxxy.org/developers/docs/moxxmpp/).
+Documentation is available [here](https://docs.moxxy.org/moxxmpp/index.html).
 
 ### [moxxmpp_socket_tcp](./packages/moxxmpp_socket_tcp)
 
@@ -15,6 +15,10 @@ Documentation is available [here](https://moxxy.org/developers/docs/moxxmpp/).
 implements the RFC6120 connection algorithm and XEP-0368 direct TLS connections,
 if a DNS implementation is given, and supports StartTLS.
 
+### moxxmpp_color
+
+Implementation of [XEP-0392](https://xmpp.org/extensions/xep-0392.html).
+
 ## Development
 
 To begin, use [melos](https://github.com/invertase/melos) to bootstrap the project: `melos bootstrap`. Then, the example
@@ -24,6 +28,15 @@ To run the example, make sure that Flutter is correctly set up and working. If y
 the development shell provided by the NixOS Flake, ensure that `ANDROID_HOME` and
 `ANDROID_AVD_HOME` are pointing to the correct directories.
 
+## Examples
+
+This repository contains 2 types of examples:
+
+- `example_flutter`: An example of using moxxmpp using Flutter
+- `examples_dart`: A collection of pure Dart examples for showing different aspects of moxxmpp
+
+For more information, see the respective README files.
+
 ## License
 
 See `./LICENSE`.

example/pubspec_overrides.yaml

@@ -1,6 +0,0 @@
-# melos_managed_dependency_overrides: moxxmpp,moxxmpp_socket_tcp
-dependency_overrides:
-  moxxmpp: 
-    path: ../packages/moxxmpp
-  moxxmpp_socket_tcp:
-    path: ../packages/moxxmpp_socket_tcp

example_flutter/lib/main.dart

@@ -111,7 +111,6 @@ class _MyHomePageState extends State<MyHomePage> {
     connection.connectionSettings = ConnectionSettings(
       jid: JID.fromString(jidController.text),
       password: passwordController.text,
-      useDirectTLS: true,
     );
     final result = await connection.connect(waitUntilLogin: true);
     setState(() {

example_flutter/pubspec.yaml

@@ -16,10 +16,10 @@ dependencies:
     version: 0.1.4+1
   moxxmpp:
     hosted: https://git.polynom.me/api/packages/Moxxy/pub
-    version: 0.1.6+1
+    version: 0.3.1
   moxxmpp_socket_tcp:
     hosted: https://git.polynom.me/api/packages/Moxxy/pub
-    version: 0.1.2+9
+    version: 0.3.1
 
 dev_dependencies:
   flutter_test:

examples_dart/.gitignore

@@ -0,0 +1,6 @@
+# Files and directories created by pub.
+.dart_tool/
+.packages
+
+# Conventional directory for build output.
+build/

examples_dart/README.md

@@ -0,0 +1,7 @@
+# Dart Examples
+
+Run using `dart run bin/<example>.dart`.
+
+## Examples
+
+- `component.dart`: Use moxxmpp to implement a component using XEP-0114.

examples_dart/analysis_options.yaml

@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

examples_dart/bin/component.dart

@@ -0,0 +1,94 @@
+import 'package:logging/logging.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
+
+class TestingTCPSocketWrapper extends TCPSocketWrapper {
+  TestingTCPSocketWrapper() : super(true);
+
+  @override
+  bool onBadCertificate(dynamic certificate, String domain) {
+    return true;
+  }
+}
+
+class EchoMessageManager extends XmppManagerBase {
+  EchoMessageManager() : super('org.moxxy.example.message');
+
+  @override
+  Future<bool> isSupported() async => true;
+
+  @override
+  List<StanzaHandler> getIncomingStanzaHandlers() => [
+        StanzaHandler(
+          stanzaTag: 'message',
+          callback: _onMessage,
+          priority: -100,
+          xmlns: null,
+        )
+      ];
+
+  Future<StanzaHandlerData> _onMessage(
+    Stanza stanza,
+    StanzaHandlerData state,
+  ) async {
+    final body = stanza.firstTag('body');
+    if (body == null) return state..done = true;
+
+    final bodyText = body.innerText();
+
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.message(
+          to: stanza.from,
+          children: [
+            XMLNode(
+              tag: 'body',
+              text: 'Hello, ${stanza.from}! You said "$bodyText"',
+            ),
+          ],
+        ),
+        awaitable: false,
+      ),
+    );
+
+    return state..done = true;
+  }
+}
+
+void main(List<String> arguments) async {
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen((record) {
+    // ignore: avoid_print
+    print(
+      '[${record.level.name}] (${record.loggerName}) ${record.time}: ${record.message}',
+    );
+  });
+
+  final conn = XmppConnection(
+    TestingReconnectionPolicy(),
+    AlwaysConnectedConnectivityManager(),
+    ComponentToServerNegotiator(),
+    TestingTCPSocketWrapper(),
+  )..connectionSettings = ConnectionSettings(
+      jid: JID.fromString('component.localhost'),
+      password: 'abc123',
+      host: '127.0.0.1',
+      port: 8888,
+    );
+  await conn.registerManagers([
+    EchoMessageManager(),
+  ]);
+
+  final result = await conn.connect(
+    waitUntilLogin: true,
+    shouldReconnect: false,
+    enableReconnectOnSuccess: false,
+  );
+  if (result.isType<XmppError>()) {
+    print('Failed to connect as component');
+    return;
+  }
+
+  // Just block for some time to test the connection
+  await Future<void>.delayed(const Duration(seconds: 9999));
+}

examples_dart/bin/muc_client.dart

@@ -0,0 +1,111 @@
+import 'package:cli_repl/cli_repl.dart';
+import 'package:example_dart/arguments.dart';
+import 'package:example_dart/socket.dart';
+import 'package:logging/logging.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+
+void main(List<String> args) async {
+  // Set up logging
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen((record) {
+    // ignore: avoid_print
+    print(
+      '[${record.level.name}] (${record.loggerName}) ${record.time}: ${record.message}',
+    );
+  });
+
+  final parser = ArgumentParser()
+    ..parser.addOption('muc', help: 'The MUC to send messages to')
+    ..parser.addOption('nick', help: 'The nickname with which to join the MUC');
+  final options = parser.handleArguments(args);
+  if (options == null) {
+    return;
+  }
+
+  // Connect
+  final muc = JID.fromString(options['muc']! as String).toBare();
+  final nick = options['nick']! as String;
+  final connection = XmppConnection(
+    TestingReconnectionPolicy(),
+    AlwaysConnectedConnectivityManager(),
+    ClientToServerNegotiator(),
+    ExampleTCPSocketWrapper(parser.srvRecord),
+  )..connectionSettings = parser.connectionSettings;
+
+  // Register the managers and negotiators
+  await connection.registerManagers([
+    PresenceManager(),
+    DiscoManager([]),
+    PubSubManager(),
+    MessageManager(),
+    StableIdManager(),
+    MUCManager(),
+  ]);
+  await connection.registerFeatureNegotiators([
+    SaslPlainNegotiator(),
+    ResourceBindingNegotiator(),
+    StartTlsNegotiator(),
+    SaslScramNegotiator(10, '', '', ScramHashType.sha1),
+  ]);
+
+  // Connect
+  Logger.root.info('Connecting...');
+  final result =
+      await connection.connect(shouldReconnect: false, waitUntilLogin: true);
+  if (!result.isType<bool>()) {
+    Logger.root.severe('Authentication failed!');
+    return;
+  }
+  Logger.root.info('Connected.');
+
+  // Print received messages.
+  connection
+      .asBroadcastStream()
+      .where((event) => event is MessageEvent)
+      .listen((event) {
+    event as MessageEvent;
+
+    // Ignore messages with no <body />
+    final body = event.get<MessageBodyData>()?.body;
+    if (body == null) {
+      return;
+    }
+
+    print('=====> [${event.from}] $body');
+  });
+
+  // Join room
+  final mm = connection.getManagerById<MUCManager>(mucManager)!;
+  await mm.joinRoom(
+    muc,
+    nick,
+    maxHistoryStanzas: 0,
+  );
+  final state = (await mm.getRoomState(muc))!;
+
+  print('=====> ${state.members.length} users in room');
+  print('=====> ${state.members.values.map((m) => m.nick).join(", ")}');
+
+  final repl = Repl(prompt: '> ');
+  await for (final line in repl.runAsync()) {
+    await connection
+        .getManagerById<MessageManager>(messageManager)!
+        .sendMessage(
+            muc,
+            TypedMap<StanzaHandlerExtension>.fromList([
+              MessageBodyData(line),
+              StableIdData(
+                // NOTE: Don't do this. Use a UUID.
+                DateTime.now().millisecondsSinceEpoch.toString(),
+                null,
+              ),
+            ]),
+            type: 'groupchat');
+  }
+
+  // Leave room
+  await connection.getManagerById<MUCManager>(mucManager)!.leaveRoom(muc);
+
+  // Disconnect
+  await connection.disconnect();
+}

examples_dart/bin/omemo_client.dart

@@ -0,0 +1,116 @@
+import 'package:chalkdart/chalk.dart';
+import 'package:cli_repl/cli_repl.dart';
+import 'package:example_dart/arguments.dart';
+import 'package:example_dart/socket.dart';
+import 'package:logging/logging.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+import 'package:omemo_dart/omemo_dart.dart' as omemo;
+
+void main(List<String> args) async {
+  // Set up logging
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen((record) {
+    // ignore: avoid_print
+    print(
+      '[${record.level.name}] (${record.loggerName}) ${record.time}: ${record.message}',
+    );
+  });
+
+  final parser = ArgumentParser()
+    ..parser.addOption('to', help: 'The JID to send messages to');
+  final options = parser.handleArguments(args);
+  if (options == null) {
+    return;
+  }
+
+  // Connect
+  final jid = parser.jid;
+  final to = JID.fromString(options['to']! as String).toBare();
+  final connection = XmppConnection(
+    TestingReconnectionPolicy(),
+    AlwaysConnectedConnectivityManager(),
+    ClientToServerNegotiator(),
+    ExampleTCPSocketWrapper(parser.srvRecord, true),
+  )..connectionSettings = parser.connectionSettings;
+
+  // Generate OMEMO data
+  omemo.OmemoManager? oom;
+  final moxxmppOmemo = OmemoManager(
+    () async => oom!,
+    (toJid, _) async => toJid == to,
+  );
+  oom = omemo.OmemoManager(
+    await omemo.OmemoDevice.generateNewDevice(jid.toString(), opkAmount: 5),
+    omemo.BlindTrustBeforeVerificationTrustManager(),
+    moxxmppOmemo.sendEmptyMessageImpl,
+    moxxmppOmemo.fetchDeviceList,
+    moxxmppOmemo.fetchDeviceBundle,
+    moxxmppOmemo.subscribeToDeviceListImpl,
+    moxxmppOmemo.publishDeviceImpl,
+  );
+  final deviceId = await oom.getDeviceId();
+  Logger.root.info('Our device id: $deviceId');
+
+  // Register the managers and negotiators
+  await connection.registerManagers([
+    PresenceManager(),
+    DiscoManager([]),
+    PubSubManager(),
+    MessageManager(),
+    moxxmppOmemo,
+  ]);
+  await connection.registerFeatureNegotiators([
+    SaslPlainNegotiator(),
+    ResourceBindingNegotiator(),
+    StartTlsNegotiator(),
+    SaslScramNegotiator(10, '', '', ScramHashType.sha1),
+  ]);
+
+  // Set up event handlers
+  connection.asBroadcastStream().listen((event) {
+    if (event is MessageEvent) {
+      Logger.root.info(event.id);
+      Logger.root.info(event.extensions.keys.toList());
+
+      final body = event.encryptionError != null
+          ? chalk.red('Failed to decrypt message: ${event.encryptionError}')
+          : chalk.green(event.get<MessageBodyData>()?.body ?? '');
+      print('[${event.from.toString()}] $body');
+    }
+  });
+
+  // Connect
+  Logger.root.info('Connecting...');
+  final result =
+      await connection.connect(shouldReconnect: false, waitUntilLogin: true);
+  if (!result.isType<bool>()) {
+    Logger.root.severe('Authentication failed!');
+    return;
+  }
+  Logger.root.info('Connected.');
+
+  // Publish our bundle
+  Logger.root.info('Publishing bundle');
+  final device = await oom.getDevice();
+  final omemoResult = await moxxmppOmemo.publishBundle(await device.toBundle());
+  if (!omemoResult.isType<bool>()) {
+    Logger.root.severe(
+        'Failed to publish OMEMO bundle: ${omemoResult.get<OmemoError>()}');
+    return;
+  }
+
+  final repl = Repl(prompt: '> ');
+  await for (final line in repl.runAsync()) {
+    await connection
+        .getManagerById<MessageManager>(messageManager)!
+        .sendMessage(
+          to,
+          TypedMap<StanzaHandlerExtension>.fromList([
+            MessageBodyData(line),
+          ]),
+        );
+  }
+
+  // Disconnect
+  await connection.disconnect();
+}

examples_dart/bin/simple_client.dart

@@ -0,0 +1,112 @@
+import 'package:logging/logging.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
+
+/// The JID we want to authenticate as.
+final xmppUser = JID.fromString('jane@example.com');
+
+/// The password to authenticate with.
+const xmppPass = 'secret';
+
+/// The [xmppHost]:[xmppPort] server address to connect to.
+/// In a real application, one might prefer to use [TCPSocketWrapper]
+/// with a custom DNS implementation to let moxxmpp resolve the XMPP
+/// server's address automatically. However, if we just provide a host
+/// and a port, then [TCPSocketWrapper] will just skip the resolution and
+/// immediately use the provided connection details.
+const xmppHost = 'localhost';
+const xmppPort = 5222;
+
+void main(List<String> args) async {
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen((record) {
+    print('${record.level.name}|${record.time}: ${record.message}');
+  });
+
+  // This class manages every aspect of handling the XMPP stream.
+  final connection = XmppConnection(
+    // A reconnection policy tells the connection how to handle an error
+    // while or after connecting to the server. The [TestingReconnectionPolicy]
+    // immediately triggers a reconnection. In a real implementation, one might
+    // prefer to use a smarter strategy, like using an exponential backoff.
+    TestingReconnectionPolicy(),
+
+    // A connectivity manager tells the connection when it can connect. This is to
+    // ensure that we're not constantly trying to reconnect because we have no
+    // Internet connection. [AlwaysConnectedConnectivityManager] always says that
+    // we're connected. In a real application, one might prefer to use a smarter
+    // strategy, like using connectivity_plus to query the system's network connectivity
+    // state.
+    AlwaysConnectedConnectivityManager(),
+
+    // This kind of negotiator tells the connection how to handle the stream
+    // negotiations. The [ClientToServerNegotiator] allows to connect to the server
+    // as a regular client. Another negotiator would be the [ComponentToServerNegotiator] that
+    // allows for connections to the server where we're acting as a component.
+    ClientToServerNegotiator(),
+
+    // A wrapper around any kind of connection. In this case, we use the [TCPSocketWrapper], which
+    // uses a dart:io Socket/SecureSocket to connect to the server. If you want, you can also
+    // provide your own socket to use, for example, WebSockets or any other connection
+    // mechanism.
+    TCPSocketWrapper(false),
+  )..connectionSettings = ConnectionSettings(
+      jid: xmppUser,
+      password: xmppPass,
+      host: xmppHost,
+      port: xmppPort,
+    );
+
+  // Register a set of "managers" that provide you with implementations of various
+  // XEPs. Some have interdependencies, which need to be met. However, this example keeps
+  // it simple and just registers a [MessageManager], which has no required dependencies.
+  await connection.registerManagers([
+    // The [MessageManager] handles receiving and sending <message /> stanzas.
+    MessageManager(),
+  ]);
+
+  // Feature negotiators are objects that tell the connection negotiator what stream features
+  // we can negotiate and enable. moxxmpp negotiators always try to enable their features.
+  await connection.registerFeatureNegotiators([
+    // This negotiator authenticates to the server using SASL PLAIN with the provided
+    // credentials.
+    SaslPlainNegotiator(),
+    // This negotiator attempts to bind a resource. By default, it's always a random one.
+    ResourceBindingNegotiator(),
+    // This negotiator attempts to do StartTLS before authenticating.
+    StartTlsNegotiator(),
+  ]);
+
+  // Set up a stream handler for the connection's event stream. Managers and negotiators
+  // may trigger certain events. The [MessageManager], for example, triggers a [MessageEvent]
+  // whenever a message is received. If other managers are registered that parse a message's
+  // contents, then they can add their data to the event.
+  connection.asBroadcastStream().listen((event) {
+    if (event is! MessageEvent) {
+      return;
+    }
+
+    // The text body (contents of the <body /> element) are returned as a
+    // [MessageBodyData] object. However, a message does not have to contain a
+    // body, so it is nullable.
+    final body = event.extensions.get<MessageBodyData>()?.body;
+    print('[<-- ${event.from}] $body');
+  });
+
+  // Connect to the server.
+  final result = await connection.connect(
+    // This flag indicates that we want to reconnect in case something happens.
+    shouldReconnect: true,
+    // This flag indicates that we want the returned Future to only resolve
+    // once the stream negotiations are done and no negotiator has any feature left
+    // to negotiate.
+    waitUntilLogin: true,
+  );
+
+  // Check if the connection was successful. [connection.connect] can return a boolean
+  // to indicate success or a [XmppError] in case the connection attempt failed.
+  if (!result.isType<bool>()) {
+    print('Failed to connect to server');
+    return;
+  }
+}

examples_dart/lib/arguments.dart

@@ -0,0 +1,84 @@
+import 'package:args/args.dart';
+import 'package:chalkdart/chalk.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
+
+extension StringToInt on String {
+  int toInt() => int.parse(this);
+}
+
+/// A wrapper around [ArgParser] for providing convenience functions and standard parameters
+/// to the examples.
+class ArgumentParser {
+  ArgumentParser() {
+    parser
+      ..addOption('jid', help: 'The JID to connect as')
+      ..addOption('password', help: 'The password to use for authenticating')
+      ..addOption('host',
+          help:
+              'The host address to connect to (By default uses the domain part of the JID)')
+      ..addOption('port', help: 'The port to connect to')
+      ..addOption('xmpps-srv',
+          help:
+              'Inject a SRV record for _xmpps-client._tcp. Format: <priority>,<weight>,<target>,<port>')
+      ..addFlag('help',
+          abbr: 'h',
+          negatable: false,
+          defaultsTo: false,
+          help: 'Show this help text');
+  }
+
+  /// The [ArgParser] that handles parsing the arguments.
+  final ArgParser parser = ArgParser();
+
+  /// The parsed options. Only valid after calling [handleArguments].
+  late ArgResults options;
+
+  ArgResults? handleArguments(List<String> args) {
+    options = parser.parse(args);
+    if (options['help']!) {
+      print(parser.usage);
+      return null;
+    }
+
+    if (options['jid'] == null) {
+      print(chalk.red('No JID specified'));
+      print(parser.usage);
+      return null;
+    }
+
+    if (options['password'] == null) {
+      print(chalk.red('No password specified'));
+      print(parser.usage);
+      return null;
+    }
+
+    return options;
+  }
+
+  /// The JID to connect as.
+  JID get jid => JID.fromString(options['jid']!).toBare();
+
+  /// Construct connection settings from the parsed options.
+  ConnectionSettings get connectionSettings => ConnectionSettings(
+        jid: jid,
+        password: options['password']!,
+        host: options['host'],
+        port: (options['port'] as String?)?.toInt(),
+      );
+
+  /// Construct an xmpps-client SRV record for injection, if specified.
+  MoxSrvRecord? get srvRecord {
+    if (options['xmpps-srv'] == null) {
+      return null;
+    }
+
+    final parts = options['xmpps-srv']!.split(',');
+    return MoxSrvRecord(
+      int.parse(parts[0]),
+      int.parse(parts[1]),
+      parts[2],
+      int.parse(parts[3]),
+    );
+  }
+}

examples_dart/lib/socket.dart

@@ -0,0 +1,22 @@
+import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
+
+/// A simple socket for examples that allows injection of SRV records (since
+/// we cannot use moxdns here).
+class ExampleTCPSocketWrapper extends TCPSocketWrapper {
+  ExampleTCPSocketWrapper(this.srvRecord, bool logData) : super(logData);
+
+  /// A potential SRV record to inject for testing.
+  final MoxSrvRecord? srvRecord;
+
+  @override
+  bool onBadCertificate(dynamic certificate, String domain) {
+    return true;
+  }
+
+  @override
+  Future<List<MoxSrvRecord>> srvQuery(String domain, bool dnssec) async {
+    return [
+      if (srvRecord != null) srvRecord!,
+    ];
+  }
+}

examples_dart/pubspec.yaml

@@ -0,0 +1,35 @@
+name: example_dart
+description: A collection of samples for moxxmpp.
+version: 1.0.0
+
+environment:
+  sdk: '>=3.0.0 <4.0.0'
+
+dependencies:
+  args: 2.4.1
+  chalkdart: 2.0.9
+  cli_repl: 0.2.3
+  logging: ^1.0.2
+  moxxmpp:
+    hosted: https://git.polynom.me/api/packages/Moxxy/pub
+    version: 0.4.0
+  moxxmpp_socket_tcp:
+    hosted: https://git.polynom.me/api/packages/Moxxy/pub
+    version: 0.4.0
+  omemo_dart:
+    hosted: https://git.polynom.me/api/packages/PapaTutuWawa/pub
+    version: ^0.5.1
+
+dependency_overrides:
+  moxxmpp:
+    path: ../packages/moxxmpp
+  moxxmpp_socket_tcp:
+    path: ../packages/moxxmpp_socket_tcp
+  omemo_dart:
+    git:
+      url: https://github.com/PapaTutuWawa/omemo_dart.git
+      rev: 49c7e114e6cf80dcde55fbbd218bba3182045862
+    
+dev_dependencies:
+  lints: ^2.0.0
+  test: ^1.16.0

flake.lock

@@ -1,12 +1,74 @@
 {
   "nodes": {
-    "flake-utils": {
+    "android-nixpkgs": {
+      "inputs": {
+        "devshell": "devshell",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      },
       "locked": {
-        "lastModified": 1678901627,
+        "lastModified": 1727554699,
-        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
+        "narHash": "sha256-puBCNL5PW7Pej+6Srmi2YjEgNeE015NFe33hbkkLqeQ=",
+        "owner": "tadfisher",
+        "repo": "android-nixpkgs",
+        "rev": "bc34ef1c71fe9eafcfb1d637b431fca83d746625",
+        "type": "github"
+      },
+      "original": {
+        "owner": "tadfisher",
+        "repo": "android-nixpkgs",
+        "type": "github"
+      }
+    },
+    "devshell": {
+      "inputs": {
+        "nixpkgs": [
+          "android-nixpkgs",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1722113426,
+        "narHash": "sha256-Yo/3loq572A8Su6aY5GP56knpuKYRvM2a1meP9oJZCw=",
+        "owner": "numtide",
+        "repo": "devshell",
+        "rev": "67cce7359e4cd3c45296fb4aaf6a19e2a9c757ae",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "devshell",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1692799911,
+        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
         "type": "github"
       },
       "original": {
@@ -17,27 +79,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1676076353,
+        "lastModified": 1727348695,
-        "narHash": "sha256-mdUtE8Tp40cZETwcq5tCwwLqkJVV1ULJQ5GKRtbshag=",
+        "narHash": "sha256-J+PeFKSDV+pHL7ukkfpVzCOO7mBSrrpJ3svwBFABbhI=",
-        "owner": "AtaraxiaSjel",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5deb99bdccbbb97e7562dee4ba8a3ee3021688e6",
+        "rev": "1925c603f17fc89f4c8f6bf6f631a802ad85d784",
         "type": "github"
       },
       "original": {
-        "owner": "AtaraxiaSjel",
+        "owner": "NixOS",
-        "ref": "update/flutter",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-unstable": {
+    "nixpkgs_2": {
       "locked": {
-        "lastModified": 1680273054,
+        "lastModified": 1727586919,
-        "narHash": "sha256-Bs6/5LpvYp379qVqGt9mXxxx9GSE789k3oFc+OAL07M=",
+        "narHash": "sha256-e/YXG0tO5GWHDS8QQauj8aj4HhXEm602q9swrrlTlKQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3364b5b117f65fe1ce65a3cdd5612a078a3b31e3",
+        "rev": "2dcd9c55e8914017226f5948ac22c53872a13ee2",
         "type": "github"
       },
       "original": {
@@ -49,9 +111,39 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "android-nixpkgs": "android-nixpkgs",
-        "nixpkgs": "nixpkgs",
+        "flake-utils": "flake-utils_2",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -1,22 +1,20 @@
 {
   description = "moxxmpp";
   inputs = {
-    nixpkgs.url = "github:AtaraxiaSjel/nixpkgs/update/flutter";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    android-nixpkgs.url = "github:tadfisher/android-nixpkgs";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, nixpkgs-unstable, flake-utils }: flake-utils.lib.eachDefaultSystem (system: let
+  outputs = { self, nixpkgs, android-nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system: let
-    pkgs = import nixpkgs {
+     pkgs = import nixpkgs {
       inherit system;
       config = {
         android_sdk.accept_license = true;
         allowUnfree = true;
       };
     };
-    unstable = import nixpkgs-unstable {
+    # Everything to make Flutter happy
-      inherit system;
-    };
     android = pkgs.androidenv.composeAndroidPackages {
       # TODO: Find a way to pin these
       #toolsVersion = "26.1.1";
@@ -33,6 +31,7 @@
       useGoogleAPIs = false;
       useGoogleTVAddOns = false;
     };
+    lib = pkgs.lib;
     pinnedJDK = pkgs.jdk17;
 
     pythonEnv = pkgs.python3.withPackages (ps: with ps; [
@@ -51,7 +50,7 @@
     };
 
     devShell = let
-      prosody-newer-community-modules = unstable.prosody.overrideAttrs (old: {
+      prosody-newer-community-modules = pkgs.prosody.overrideAttrs (old: {
         communityModules = pkgs.fetchhg {
           url = "https://hg.prosody.im/prosody-modules";
           rev = "e3a3a6c86a9f";
@@ -103,7 +102,26 @@
       CPATH = "${pkgs.xorg.libX11.dev}/include:${pkgs.xorg.xorgproto}/include";
       LD_LIBRARY_PATH = with pkgs; lib.makeLibraryPath [ atk cairo epoxy gdk-pixbuf glib gtk3 harfbuzz pango ];
 
+      ANDROID_SDK_ROOT = "${android.androidsdk}/share/android-sdk";
+      ANDROID_HOME = "${android.androidsdk}/share/android-sdk";
       JAVA_HOME = pinnedJDK;
+
+      # Fix an issue with Flutter using an older version of aapt2, which does not know
+      # an used parameter.
+      GRADLE_OPTS = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${android.androidsdk}/share/android-sdk/build-tools/34.0.0/aapt2";
+    };
+
+    apps = {
+      regenerateNixPackage = let
+        script = pkgs.writeShellScript "regenerate-nix-package.sh" ''
+          set -e
+          ${pythonEnv}/bin/python ./scripts/pubspec2lock.py ./packages/moxxmpp/pubspec.lock ./nix/moxxmpp.lock
+          ${pythonEnv}/bin/python ./scripts/lock2nix.py ./nix/moxxmpp.lock ./nix/pubcache.moxxmpp.nix moxxmpp
+        '';
+      in {
+        type = "app";
+        program = "${script}";
+      };
     };
   });
 }

integration_tests/create_users.sh

@@ -0,0 +1,4 @@
+set -ex
+
+prosodyctl --config ./prosody.cfg.lua register testuser1 localhost abc123
+prosodyctl --config ./prosody.cfg.lua register testuser2 localhost abc123

integration_tests/prosody.cfg.lua

@@ -58,3 +58,5 @@ VirtualHost "localhost"
 
 Component "component.localhost"
     component_secret = "abc123"
+
+Component "muc.localhost" "muc"

integration_tests/pubspec.yaml

@@ -3,14 +3,16 @@ description: A sample command-line application.
 version: 1.0.0
 
 environment:
-  sdk: '>=2.18.0 <3.0.0'
+  sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  logging: ^1.0.2
+  logging: ^1.3.0
-  moxxmpp: 0.2.0
+  moxxmpp:
-  moxxmpp_socket_tcp: 0.2.1
+    path: ../packages/moxxmpp
+  moxxmpp_socket_tcp:
+    path: ../packages/moxxmpp_socket_tcp
 
 dev_dependencies:
-  lints: ^2.0.0
+  build_runner: ^2.4.13
-  test: ^1.16.0
+  test: ^1.25.8
-  very_good_analysis: ^3.0.1
+  very_good_analysis: ^6.0.0

integration_tests/test/component_test.dart

@@ -4,6 +4,8 @@ import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
 import 'package:test/test.dart';
 
 class TestingTCPSocketWrapper extends TCPSocketWrapper {
+  TestingTCPSocketWrapper() : super(true);
+
   @override
   bool onBadCertificate(dynamic certificate, String domain) {
     return true;
@@ -31,10 +33,6 @@ void main() {
         host: '127.0.0.1',
         port: 8888,
       );
-    await conn.registerManagers([
-      RosterManager(TestingRosterStateManager('', [])),
-      DiscoManager([]),
-    ]);
 
     final result = await conn.connect(
       waitUntilLogin: true,

integration_tests/test/sasl2_test.dart

@@ -4,6 +4,8 @@ import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
 import 'package:test/test.dart';
 
 class TestingTCPSocketWrapper extends TCPSocketWrapper {
+  TestingTCPSocketWrapper() : super(true);
+
   @override
   bool onBadCertificate(dynamic certificate, String domain) {
     return true;
@@ -27,7 +29,7 @@ void main() {
       ClientToServerNegotiator(),
       TestingTCPSocketWrapper(),
     )..connectionSettings = ConnectionSettings(
-        jid: JID.fromString('testuser@localhost'),
+        jid: JID.fromString('testuser1@localhost'),
         password: 'abc123',
         host: '127.0.0.1',
         port: 5222,
@@ -40,17 +42,18 @@ void main() {
     ]);
     await conn.registerFeatureNegotiators([
       SaslPlainNegotiator(),
+      SaslScramNegotiator(9, '', '', ScramHashType.sha1),
+      SaslScramNegotiator(10, '', '', ScramHashType.sha256),
       ResourceBindingNegotiator(),
       FASTSaslNegotiator(),
       Bind2Negotiator(),
       StartTlsNegotiator(),
-      Sasl2Negotiator(
+      Sasl2Negotiator()
-        userAgent: const UserAgent(
+        ..userAgent = const UserAgent(
           id: 'd4565fa7-4d72-4749-b3d3-740edbf87770',
           software: 'moxxmpp',
           device: "PapaTutuWawa's awesome device",
         ),
-      ),
     ]);
 
     final result = await conn.connect(

nix/moxxmpp-docs.nix

@@ -7,7 +7,7 @@
 
 stdenv.mkDerivation {
   pname = "moxxmpp-docs";
-  version = "0.2.0";
+  version = "0.3.1";
 
   PUB_CACHE = "${pubCache}";
   

nix/pubcache.moxxmpp.nix

@@ -1,28 +1,30 @@
+# GENERATED BY LOCK2NIX.py
+# DO NOT EDIT BY HAND
 {fetchzip, runCommand} : rec {
   _fe_analyzer_shared = fetchzip {
-    sha256 = "1hyd5pmjcfyvfwhsc0wq6k0229abmqq5zn95g31hh42bklb2gci5";
+    sha256 = "15fh9ka41dw4qsynv07msq4i243fibprcmafdygw5x88f7m55fq3";
-    url = "https://pub.dartlang.org/packages/_fe_analyzer_shared/versions/50.0.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/_fe_analyzer_shared/versions/61.0.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   analyzer = fetchzip {
-    sha256 = "0niy5b3w39aywpjpw5a84pxdilhh3zzv1c22x8ywml756pybmj4r";
+    sha256 = "0w604zngxwfx0xqxvhbxrhdh04wgm6ad6a1lbwnyvmk57amv44np";
-    url = "https://pub.dartlang.org/packages/analyzer/versions/5.2.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/analyzer/versions/5.13.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   args = fetchzip {
-    sha256 = "0c78zkzg2d2kzw1qrpiyrj1qvm4pr0yhnzapbqk347m780ha408g";
+    sha256 = "01ps253280c6dbx0vncw4wga4l2qp1zx779qjj2x06xzb3744zbz";
-    url = "https://pub.dartlang.org/packages/args/versions/2.3.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/args/versions/2.4.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   async = fetchzip {
-    sha256 = "00hhylamsjcqmcbxlsrfimri63gb384l31r9mqvacn6c6bvk4yfx";
+    sha256 = "0hfgvjajp5c2mw68186hgrk9v5zjhhi149hlhl0fap274p2v1g3q";
-    url = "https://pub.dartlang.org/packages/async/versions/2.10.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/async/versions/2.11.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -49,29 +51,29 @@
   };
 
   build_daemon = fetchzip {
-    sha256 = "0b6hnwjc3gi5g7cnpy8xyiqigcrs0xp51c7y7v1pqn9v75g25w6j";
+    sha256 = "1wn7bq846vgdj62bkh9h25l95xdsndv0jdyw52nyr0591l3bpg3h";
-    url = "https://pub.dartlang.org/packages/build_daemon/versions/3.1.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/build_daemon/versions/3.1.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   build_resolvers = fetchzip {
-    sha256 = "0fnrisgq6rnvbqsf8v43hb11kr1qq6azrxbsvx3wwimd37nxx8m5";
+    sha256 = "00h9abhrfmnl0xxziyf6p68sxnbv2ww1c4dhgpnz00mzbmamnq5c";
-    url = "https://pub.dartlang.org/packages/build_resolvers/versions/2.1.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/build_resolvers/versions/2.3.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   build_runner = fetchzip {
-    sha256 = "0246bxl9rxgil55fhfzi7csd9a56blj9s1j1z79717hiyzsr60x6";
+    sha256 = "0b5ha1l6k0gn2swqgqvfy2vl58klf81sxrjnmk0p7rj1wzbqjm7l";
-    url = "https://pub.dartlang.org/packages/build_runner/versions/2.3.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/build_runner/versions/2.3.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   build_runner_core = fetchzip {
-    sha256 = "0bpil0fw0dag3vbnin9p945ymi7xjgkiy7jrq9j52plljf7cnf5z";
+    sha256 = "07r1kfy6ylm4i4xrb24ns8l26h4h1lgcskmnf8wvq2rd5d5hq790";
-    url = "https://pub.dartlang.org/packages/build_runner_core/versions/7.2.7.tar.gz";
+    url = "https://pub.dartlang.org/packages/build_runner_core/versions/7.2.7%2B1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -84,29 +86,29 @@
   };
 
   built_value = fetchzip {
-    sha256 = "0sslr4258snvcj8qhbdk6wapka174als0viyxddwqlnhs7dlci8i";
+    sha256 = "1y84imf9xqqy3gnd5zz9bcln6mycy7qx35r70b0izm31ismlbzkv";
-    url = "https://pub.dartlang.org/packages/built_value/versions/8.4.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/built_value/versions/8.6.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   checked_yaml = fetchzip {
-    sha256 = "1gf7ankc5jb7mk17br87ajv05pfg6vb8nf35ay6c35w8jp70ra7k";
+    sha256 = "1sn01yrmj0pkijn08g3v45c3zmyvdygk9svigkkzybgicdwlkpqs";
-    url = "https://pub.dartlang.org/packages/checked_yaml/versions/2.0.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/checked_yaml/versions/2.0.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   code_builder = fetchzip {
-    sha256 = "1vl9dl23yd0zjw52ndrazijs6dw83fg1rvyb2gfdpd6n1lj9nbhg";
+    sha256 = "1shgl7mxiyv0hhw326yqj2b9jxi1h74qxmsnxf1d1xc6yz766p9a";
-    url = "https://pub.dartlang.org/packages/code_builder/versions/4.3.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/code_builder/versions/4.6.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   collection = fetchzip {
-    sha256 = "1iyl3v3j7mj3sxjf63b1kc182fwrwd04mjp5x2i61hic8ihfw545";
+    sha256 = "1mr8j0078c4z9hhckiq8m735rggsazwfprm0w9gisil51vh7j2mk";
-    url = "https://pub.dartlang.org/packages/collection/versions/1.17.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/collection/versions/1.18.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -119,29 +121,29 @@
   };
 
   coverage = fetchzip {
-    sha256 = "0akbg1yp2h4vprc8r9xvrpgvp5d26h7m80h5sbzgr5dlis1bcw0d";
+    sha256 = "1yy9bgkax5b6kk7qa07p452v82fyj4rl1j03fn366ywyvhfrh6lp";
-    url = "https://pub.dartlang.org/packages/coverage/versions/1.6.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/coverage/versions/1.6.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   crypto = fetchzip {
-    sha256 = "1kjfb8fvdxazmv9ps2iqdhb8kcr31115h0nwn6v4xmr71k8jb8ds";
+    sha256 = "100ai8qa4p3dyvvd60c4xa9p0gm06yh0d68xgcfm3giraad8xmqj";
-    url = "https://pub.dartlang.org/packages/crypto/versions/3.0.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/crypto/versions/3.0.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   cryptography = fetchzip {
-    sha256 = "0jqph45d9lbhdakprnb84c3qhk4aq05hhb1pmn8w23yhl41ypijs";
+    sha256 = "1yxn9slqq93ri81fbr2nbsinz0mpk9wk39ny076ja8q31d4i8v3f";
-    url = "https://pub.dartlang.org/packages/cryptography/versions/2.0.5.tar.gz";
+    url = "https://pub.dartlang.org/packages/cryptography/versions/2.5.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   dart_style = fetchzip {
-    sha256 = "01wg15kalbjlh4i3xbawc9zk8yrk28qhak7xp7mlwn2syhdckn7v";
+    sha256 = "0cjhrb1hs8iw9smmfd0fgnxq3nm0w8sz17l6q6svyz6kif19wk9k";
-    url = "https://pub.dartlang.org/packages/dart_style/versions/2.2.4.tar.gz";
+    url = "https://pub.dartlang.org/packages/dart_style/versions/2.3.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -154,43 +156,29 @@
   };
 
   fixnum = fetchzip {
-    sha256 = "1m8cdfqp9d6w1cik3fwz9bai1wf9j11rjv2z0zlv7ich87q9kkjk";
+    sha256 = "0nqrzj41ys8dpxf1x70r0kfj1avj0f2j2b7498k8kvc0i9c5asz7";
-    url = "https://pub.dartlang.org/packages/fixnum/versions/1.0.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/fixnum/versions/1.1.0.tar.gz";
-    stripRoot = false;
-    extension = "tar.gz";
-  };
-
-  freezed = fetchzip {
-    sha256 = "1i9s4djf4vlz56zqn8brcck3n7sk07qay23wmaan991cqydd10iq";
-    url = "https://pub.dartlang.org/packages/freezed/versions/2.1.1.tar.gz";
-    stripRoot = false;
-    extension = "tar.gz";
-  };
-
-  freezed_annotation = fetchzip {
-    sha256 = "0ym120dh1lpfnb68gxh1finm8p9l445q5x10aw8269y469b9k9z3";
-    url = "https://pub.dartlang.org/packages/freezed_annotation/versions/2.1.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   frontend_server_client = fetchzip {
-    sha256 = "0nv4avkv2if9hdcfzckz36f3mclv7vxchivrg8j3miaqhnjvv4bj";
+    sha256 = "096v7ycix5hgnk750s1qgykyghl2mymhdkg39jrlk3kbj6xygq5b";
-    url = "https://pub.dartlang.org/packages/frontend_server_client/versions/3.1.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/frontend_server_client/versions/3.2.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   glob = fetchzip {
-    sha256 = "0a6gbwsbz6rkg35dkff0zv88rvcflqdmda90hdfpn7jp1z1w9rhs";
+    sha256 = "0ffab3azx8zkma36mk6wnig8bn8g5g0vjrq2gl21y77rxgw9iqxj";
-    url = "https://pub.dartlang.org/packages/glob/versions/2.1.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/glob/versions/2.1.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   graphs = fetchzip {
-    sha256 = "0cr6dgs1a7ln2ir5gd0kiwpn787lk4dwhqfjv8876hkkr1rv80m9";
+    sha256 = "0fda0j8y6sq1rc9zpzglrzysl5h49y2ji1wq2lq0wx2c609dxm7f";
-    url = "https://pub.dartlang.org/packages/graphs/versions/2.2.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/graphs/versions/2.3.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -217,78 +205,78 @@
   };
 
   io = fetchzip {
-    sha256 = "1bp5l8hkrp6fjj7zw9af51hxyp52sjspc5558lq0lmi453l0czni";
+    sha256 = "101kd0rw26vglmr1m5p130kbrp3k7dk4p5nr77wsbwgg53w8c0d4";
-    url = "https://pub.dartlang.org/packages/io/versions/1.0.3.tar.gz";
+    url = "https://pub.dartlang.org/packages/io/versions/1.0.4.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   js = fetchzip {
-    sha256 = "13fbxgyg1v6bmzvxamg6494vk3923fn3mgxj6f4y476aqwk99n50";
+    sha256 = "124a9yqrjdw3p4nnirab9hm9ziwraldlw4q5cb3sr0dcrli74qpw";
-    url = "https://pub.dartlang.org/packages/js/versions/0.6.5.tar.gz";
+    url = "https://pub.dartlang.org/packages/js/versions/0.6.7.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   json_annotation = fetchzip {
-    sha256 = "1p9nvn33psx2zbalhyqjw8gr4agd76jj5jq0fdz0i584c7l77bby";
+    sha256 = "1jjw7p8qyqajgdq4jqvxipq5w0qrq9dpi1qmia70pk995akryh6m";
-    url = "https://pub.dartlang.org/packages/json_annotation/versions/4.7.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/json_annotation/versions/4.8.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   json_serializable = fetchzip {
-    sha256 = "04d7laaxrbiybcgbv3y223hy8d6n9f84h5lv9sv79zd9ffzkb2hg";
+    sha256 = "1pmidql9x6s2pbhdx9x20pwqwvwpfkvrz0h0cm1f8pqis76c90hb";
-    url = "https://pub.dartlang.org/packages/json_serializable/versions/6.5.4.tar.gz";
+    url = "https://pub.dartlang.org/packages/json_serializable/versions/6.6.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   logging = fetchzip {
-    sha256 = "0hl1mjh662c44ci7z60x92i0jsyqg1zm6k6fc89n9pdcxsqdpwfs";
+    sha256 = "124hfjs66r30p92ndfmy5fymgy66yk9in97h8sq6fi7r78pqyc7g";
-    url = "https://pub.dartlang.org/packages/logging/versions/1.0.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/logging/versions/1.2.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   matcher = fetchzip {
-    sha256 = "0pjgc38clnjbv124n8bh724db1wcc4kk125j7dxl0icz7clvm0p0";
+    sha256 = "0inznqkrxqnq09lcbwvda3xd07qfm1k3aa6dv1wy39gvci8hybss";
-    url = "https://pub.dartlang.org/packages/matcher/versions/0.12.13.tar.gz";
+    url = "https://pub.dartlang.org/packages/matcher/versions/0.12.16.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   meta = fetchzip {
-    sha256 = "01kqdd25nln5a219pr94s66p27m0kpqz0wpmwnm24kdy3ngif1v5";
+    sha256 = "1l3zaz6q2s9mnm7s674xshsfqspy79p5kdbbnc99rf2l76avv4h3";
-    url = "https://pub.dartlang.org/packages/meta/versions/1.8.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/meta/versions/1.9.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   mime = fetchzip {
-    sha256 = "1dr3qikzvp10q1saka7azki5gk2kkf2v7k9wfqjsyxmza2zlv896";
+    sha256 = "1dha9z64bsz8xhi0p62vmlyikr8xwbdlrw90hxghmm3rdgd9h25w";
-    url = "https://pub.dartlang.org/packages/mime/versions/1.0.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/mime/versions/1.0.4.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   moxlib = fetchzip {
-    sha256 = "1j52xglpwy8c7dbylc3f6vrh0p52xhhwqs4h0qcqk8c1rvjn5czq";
+    sha256 = "1qaacmcqhq33grn2nq8sn23ki62dcmw0fqy589xm1zv6w0pzfmsk";
-    url = "https://git.polynom.me/api/packages/moxxy/pub/api/packages/moxlib/files/0.1.5.tar.gz";
+    url = "https://git.polynom.me/api/packages/moxxy/pub/api/packages/moxlib/files/0.2.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   node_preamble = fetchzip {
-    sha256 = "0i0gfc2yqa09182vc01lj47qpq98kfm9m8h4n8c5fby0mjd0lvyx";
+    sha256 = "12ajg76r9aqmqkavvlxbnb3sszg1szcq3f30badkd0xc25mnhyh8";
-    url = "https://pub.dartlang.org/packages/node_preamble/versions/2.0.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/node_preamble/versions/2.0.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   omemo_dart = fetchzip {
-    sha256 = "09x3jqa11hjdjp31nxnz91j6jssbc2f8a1lh44fmkc0d79hs8bbi";
+    sha256 = "0fhf89ic5mdyld25l6rfb37a1fk1f0f2b4d72xi4r7pvr0ddjhz8";
-    url = "https://git.polynom.me/api/packages/PapaTutuWawa/pub/api/packages/omemo_dart/files/0.4.3.tar.gz";
+    url = "https://git.polynom.me/api/packages/PapaTutuWawa/pub/api/packages/omemo_dart/files/0.5.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -301,8 +289,8 @@
   };
 
   path = fetchzip {
-    sha256 = "16ggdh29ciy7h8sdshhwmxn6dd12sfbykf2j82c56iwhhlljq181";
+    sha256 = "1mjdhq2fsz6i9krhp2mnaks2bcw34sa4p7mg0v6njk8dgx2754iv";
-    url = "https://pub.dartlang.org/packages/path/versions/1.8.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/path/versions/1.8.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -315,8 +303,8 @@
   };
 
   petitparser = fetchzip {
-    sha256 = "1pqqqqiy9ald24qsi24q9qrr0zphgpsrnrv9rlx4vwr6xak7d8c0";
+    sha256 = "19zqrpb1z77aw1k2s8rsxdfxczzv9934g2rdfj2jyiv3pqgdq8gh";
-    url = "https://pub.dartlang.org/packages/petitparser/versions/5.1.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/petitparser/versions/5.4.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -335,16 +323,30 @@
     extension = "tar.gz";
   };
 
+  protobuf = fetchzip {
+    sha256 = "1jriyisf8bnvq5ygjk93mn2yzdlnii7xrhy6aabz54xr3y4dcy9x";
+    url = "https://pub.dartlang.org/packages/protobuf/versions/2.1.0.tar.gz";
+    stripRoot = false;
+    extension = "tar.gz";
+  };
+
+  protoc_plugin = fetchzip {
+    sha256 = "0hjjd1xkv4s4g1d5n2aza0kdwlbfl2aivq99230m3yml7irn00jk";
+    url = "https://pub.dartlang.org/packages/protoc_plugin/versions/20.0.1.tar.gz";
+    stripRoot = false;
+    extension = "tar.gz";
+  };
+
   pub_semver = fetchzip {
-    sha256 = "1vsj5c1f2dza4l5zmjix4zh65lp8gsg6pw01h57pijx2id0g4bwi";
+    sha256 = "0wpcfz1crxipbjm18m71pl4vl2ra8vw1n93ff8snr54mmlyfb9z1";
-    url = "https://pub.dartlang.org/packages/pub_semver/versions/2.1.2.tar.gz";
+    url = "https://pub.dartlang.org/packages/pub_semver/versions/2.1.4.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   pubspec_parse = fetchzip {
-    sha256 = "19dmr9k4wsqjnhlzp1lbrw8dv7a1gnwmr8l5j9zlw407rmfg20d1";
+    sha256 = "0dj8sf1w61g7vh1ly3sl690z0nwllzjzbapxswmgsglr0ndcyrs1";
-    url = "https://pub.dartlang.org/packages/pubspec_parse/versions/1.2.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/pubspec_parse/versions/1.2.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -364,43 +366,43 @@
   };
 
   shelf = fetchzip {
-    sha256 = "0x2xl7glrnq0hdxpy2i94a4wxbdrd6dm46hvhzgjn8alsm8z0wz1";
+    sha256 = "10yk98nadrgj5d3r3241kdaywjjs1j10mg8gacv80kg1mhcfdrxp";
-    url = "https://pub.dartlang.org/packages/shelf/versions/1.4.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/shelf/versions/1.4.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   shelf_packages_handler = fetchzip {
-    sha256 = "199rbdbifj46lg3iynznnsbs8zr4dfcw0s7wan8v73nvpqvli82q";
+    sha256 = "1h8s42nff9ar0xn7yb42m64lpvmqzq8wranqrkkixdnp7w3pmv1x";
-    url = "https://pub.dartlang.org/packages/shelf_packages_handler/versions/3.0.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/shelf_packages_handler/versions/3.0.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   shelf_static = fetchzip {
-    sha256 = "1kqbaslz7bna9lldda3ibrjg0gczbzlwgm9cic8shg0bnl0v3s34";
+    sha256 = "1bcqynn2z2syrigmrclxgg8hjhd1x9742938i62cicbaga6vclaz";
-    url = "https://pub.dartlang.org/packages/shelf_static/versions/1.1.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/shelf_static/versions/1.1.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   shelf_web_socket = fetchzip {
-    sha256 = "0rr87nx2wdf9alippxiidqlgi82fbprnsarr1jswg9qin0yy4jpn";
+    sha256 = "110b5hrqwpnmq16shxxzjmcih5yfs5kh80dn8avfv0xj5iv7n94c";
-    url = "https://pub.dartlang.org/packages/shelf_web_socket/versions/1.0.3.tar.gz";
+    url = "https://pub.dartlang.org/packages/shelf_web_socket/versions/1.0.4.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   source_gen = fetchzip {
-    sha256 = "1kxgx782lzpjhv736h0pz3lnxpcgiy05h0ysy0q77gix8q09i1hz";
+    sha256 = "1jql5zccv4vnbbvwcpyyvz8l27pg1rviqbp4vrks5313nf4b0kjg";
-    url = "https://pub.dartlang.org/packages/source_gen/versions/1.2.6.tar.gz";
+    url = "https://pub.dartlang.org/packages/source_gen/versions/1.3.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   source_helper = fetchzip {
-    sha256 = "044kzmzlfpx93s4raz5avijahizmvai0zvl0lbm4wi93ynhdp1pd";
+    sha256 = "0mdd02vhcdcv9n58gzbx2q0bphwj0alz312ca1a8xpkf8jx3y8v4";
-    url = "https://pub.dartlang.org/packages/source_helper/versions/1.3.3.tar.gz";
+    url = "https://pub.dartlang.org/packages/source_helper/versions/1.3.4.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -413,29 +415,29 @@
   };
 
   source_maps = fetchzip {
-    sha256 = "18ixrlz3l2alk3hp0884qj0mcgzhxmjpg6nq0n1200pfy62pc4z6";
+    sha256 = "004lcfka01agxjdw7zjhrffdkisvgx5s61b5gsl8qqk2jd1rswa7";
-    url = "https://pub.dartlang.org/packages/source_maps/versions/0.10.11.tar.gz";
+    url = "https://pub.dartlang.org/packages/source_maps/versions/0.10.12.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   source_span = fetchzip {
-    sha256 = "1lq4sy7lw15qsv9cijf6l48p16qr19r7njzwr4pxn8vv1kh6rb86";
+    sha256 = "1nybnf7l5chslp4fczhqnrgrhymy844lw7qrj6y08i626dshrd46";
-    url = "https://pub.dartlang.org/packages/source_span/versions/1.9.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/source_span/versions/1.10.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   stack_trace = fetchzip {
-    sha256 = "0bggqvvpkrfvqz24bnir4959k0c45azc3zivk4lyv3mvba6092na";
+    sha256 = "0xpk2cvmgdh46iwip9jsb54fqx13jnina8pk03akxkmsxvag5izb";
-    url = "https://pub.dartlang.org/packages/stack_trace/versions/1.11.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/stack_trace/versions/1.11.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   stream_channel = fetchzip {
-    sha256 = "054by84c60yxphr3qgg6f82gg6d22a54aqjp265anlm8dwz1ji32";
+    sha256 = "0nrlw6zcscgnn6818krkbgs9qiv3f7q8pa7ljw1bqkrsb7xabm8s";
-    url = "https://pub.dartlang.org/packages/stream_channel/versions/2.1.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/stream_channel/versions/2.1.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -455,8 +457,8 @@
   };
 
   synchronized = fetchzip {
-    sha256 = "1j6108cq1hbcqpwhk9sah8q3gcidd7222bzhha2nk9syxhzqy82i";
+    sha256 = "1fx1z1p5qkn4qnq24riw5s86vmq645ppg8f74iyv2fc9rvr301ar";
-    url = "https://pub.dartlang.org/packages/synchronized/versions/3.0.0%2B2.tar.gz";
+    url = "https://pub.dartlang.org/packages/synchronized/versions/3.1.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -469,36 +471,36 @@
   };
 
   test = fetchzip {
-    sha256 = "08kimbjvkdw3bkj7za36p3yqdr8dnlb5v30c250kvdncb7k09h4x";
+    sha256 = "002phlj2pg6nll5hv449izxbqk29zwmwc77d0jx2iimz18dgy2r5";
-    url = "https://pub.dartlang.org/packages/test/versions/1.22.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/test/versions/1.24.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   test_api = fetchzip {
-    sha256 = "0mfyjpqkkmaqdh7xygrydx12591wq9ll816f61n80dc6rmkdx7px";
+    sha256 = "0as1xcywjrd2zax3cm56qmnac12shf8c1ynnzzjwnggm23f61dxb";
-    url = "https://pub.dartlang.org/packages/test_api/versions/0.4.16.tar.gz";
+    url = "https://pub.dartlang.org/packages/test_api/versions/0.6.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   test_core = fetchzip {
-    sha256 = "1r8dnvkxxvh55z1c8lrsja1m0dkf5i4lgwwqixcx0mqvxx5w3005";
+    sha256 = "1cx2rmz1xzk5z5yh8fpbsrsz4mgjanrw4xvnp0qzdnm2d7vhaq0y";
-    url = "https://pub.dartlang.org/packages/test_core/versions/0.4.20.tar.gz";
+    url = "https://pub.dartlang.org/packages/test_core/versions/0.5.3.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   timing = fetchzip {
-    sha256 = "0a02znvy0fbzr0n4ai67pp8in7w6m768aynkk1kp5lnmgy17ppsg";
+    sha256 = "15jvxsw7v0gwbdlykma60l1qlhlzb3brh6m0sg2bgbfir4l5s9gw";
-    url = "https://pub.dartlang.org/packages/timing/versions/1.0.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/timing/versions/1.0.1.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   typed_data = fetchzip {
-    sha256 = "1x402bvyzdmdvmyqhyfamjxf54p9j8sa8ns2n5dwsdhnfqbw859g";
+    sha256 = "0q6ggc52vfpr8kqaq69h757wy942hvgshhnsr2pjdinb4zk2sxl1";
-    url = "https://pub.dartlang.org/packages/typed_data/versions/1.3.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/typed_data/versions/1.3.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -511,8 +513,8 @@
   };
 
   uuid = fetchzip {
-    sha256 = "12lsynr07lw9848jknmzxvzn3ia12xdj07iiva0vg0qjvpq7ladg";
+    sha256 = "1nh1hxfr6bhyadqqcxrpwrphmm75f1iq4rzfjdwa2486xwlh7vx3";
-    url = "https://pub.dartlang.org/packages/uuid/versions/3.0.5.tar.gz";
+    url = "https://pub.dartlang.org/packages/uuid/versions/3.0.7.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -525,8 +527,8 @@
   };
 
   vm_service = fetchzip {
-    sha256 = "05xaxaxzyfls6jklw1hzws2jmina1cjk10gbl7a63djh1ghnzjb5";
+    sha256 = "15ail7rbaq9ksg73cc0mw2k5imbiidl95yfd4v49k81gp5xmj92w";
-    url = "https://pub.dartlang.org/packages/vm_service/versions/9.4.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/vm_service/versions/11.10.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -539,8 +541,8 @@
   };
 
   web_socket_channel = fetchzip {
-    sha256 = "147amn05v1f1a1grxjr7yzgshrczjwijwiywggsv6dgic8kxyj5a";
+    sha256 = "0f9441c4zifb5qadpjg319dcilimpkdhfacnkl543802bf8qjn4w";
-    url = "https://pub.dartlang.org/packages/web_socket_channel/versions/2.2.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/web_socket_channel/versions/2.4.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
@@ -553,262 +555,262 @@
   };
 
   xml = fetchzip {
-    sha256 = "0jwknkfcnb5svg6r01xjsj0aiw06mlx54pgay1ymaaqm2mjhyz01";
+    sha256 = "120azx71gazvrrn07vd83vrffzrhsqnmf9rdjxl73rra9py8ixiy";
-    url = "https://pub.dartlang.org/packages/xml/versions/6.2.0.tar.gz";
+    url = "https://pub.dartlang.org/packages/xml/versions/6.3.0.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   yaml = fetchzip {
-    sha256 = "0mqqmzn3c9rr38b5xm312fz1vyp6vb36lm477r9hak77bxzpp0iw";
+    sha256 = "0awh9dynbhrlq8zgszaiyxbyyn9b6wyps1zww4z2lx62nbma0pda";
-    url = "https://pub.dartlang.org/packages/yaml/versions/3.1.1.tar.gz";
+    url = "https://pub.dartlang.org/packages/yaml/versions/3.1.2.tar.gz";
     stripRoot = false;
     extension = "tar.gz";
   };
 
   pubCache = runCommand "moxxmpp-pub-cache" {} ''
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${_fe_analyzer_shared} $out/hosted/pub.dartlang.org/_fe_analyzer_shared-50.0.0
+    ln -s ${_fe_analyzer_shared} $out/hosted/pub.dev/_fe_analyzer_shared-61.0.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${analyzer} $out/hosted/pub.dartlang.org/analyzer-5.2.0
+    ln -s ${analyzer} $out/hosted/pub.dev/analyzer-5.13.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${args} $out/hosted/pub.dartlang.org/args-2.3.1
+    ln -s ${args} $out/hosted/pub.dev/args-2.4.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${async} $out/hosted/pub.dartlang.org/async-2.10.0
+    ln -s ${async} $out/hosted/pub.dev/async-2.11.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${boolean_selector} $out/hosted/pub.dartlang.org/boolean_selector-2.1.1
+    ln -s ${boolean_selector} $out/hosted/pub.dev/boolean_selector-2.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build} $out/hosted/pub.dartlang.org/build-2.3.1
+    ln -s ${build} $out/hosted/pub.dev/build-2.3.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build_config} $out/hosted/pub.dartlang.org/build_config-1.1.1
+    ln -s ${build_config} $out/hosted/pub.dev/build_config-1.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build_daemon} $out/hosted/pub.dartlang.org/build_daemon-3.1.0
+    ln -s ${build_daemon} $out/hosted/pub.dev/build_daemon-3.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build_resolvers} $out/hosted/pub.dartlang.org/build_resolvers-2.1.0
+    ln -s ${build_resolvers} $out/hosted/pub.dev/build_resolvers-2.3.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build_runner} $out/hosted/pub.dartlang.org/build_runner-2.3.2
+    ln -s ${build_runner} $out/hosted/pub.dev/build_runner-2.3.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${build_runner_core} $out/hosted/pub.dartlang.org/build_runner_core-7.2.7
+    ln -s ${build_runner_core} $out/hosted/pub.dev/build_runner_core-7.2.7+1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${built_collection} $out/hosted/pub.dartlang.org/built_collection-5.1.1
+    ln -s ${built_collection} $out/hosted/pub.dev/built_collection-5.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${built_value} $out/hosted/pub.dartlang.org/built_value-8.4.2
+    ln -s ${built_value} $out/hosted/pub.dev/built_value-8.6.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${checked_yaml} $out/hosted/pub.dartlang.org/checked_yaml-2.0.1
+    ln -s ${checked_yaml} $out/hosted/pub.dev/checked_yaml-2.0.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${code_builder} $out/hosted/pub.dartlang.org/code_builder-4.3.0
+    ln -s ${code_builder} $out/hosted/pub.dev/code_builder-4.6.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${collection} $out/hosted/pub.dartlang.org/collection-1.17.0
+    ln -s ${collection} $out/hosted/pub.dev/collection-1.18.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${convert} $out/hosted/pub.dartlang.org/convert-3.1.1
+    ln -s ${convert} $out/hosted/pub.dev/convert-3.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${coverage} $out/hosted/pub.dartlang.org/coverage-1.6.1
+    ln -s ${coverage} $out/hosted/pub.dev/coverage-1.6.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${crypto} $out/hosted/pub.dartlang.org/crypto-3.0.2
+    ln -s ${crypto} $out/hosted/pub.dev/crypto-3.0.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${cryptography} $out/hosted/pub.dartlang.org/cryptography-2.0.5
+    ln -s ${cryptography} $out/hosted/pub.dev/cryptography-2.5.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${dart_style} $out/hosted/pub.dartlang.org/dart_style-2.2.4
+    ln -s ${dart_style} $out/hosted/pub.dev/dart_style-2.3.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${file} $out/hosted/pub.dartlang.org/file-6.1.4
+    ln -s ${file} $out/hosted/pub.dev/file-6.1.4
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${fixnum} $out/hosted/pub.dartlang.org/fixnum-1.0.1
+    ln -s ${fixnum} $out/hosted/pub.dev/fixnum-1.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${freezed} $out/hosted/pub.dartlang.org/freezed-2.1.1
+    ln -s ${frontend_server_client} $out/hosted/pub.dev/frontend_server_client-3.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${freezed_annotation} $out/hosted/pub.dartlang.org/freezed_annotation-2.1.0
+    ln -s ${glob} $out/hosted/pub.dev/glob-2.1.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${frontend_server_client} $out/hosted/pub.dartlang.org/frontend_server_client-3.1.0
+    ln -s ${graphs} $out/hosted/pub.dev/graphs-2.3.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${glob} $out/hosted/pub.dartlang.org/glob-2.1.0
+    ln -s ${hex} $out/hosted/pub.dev/hex-0.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${graphs} $out/hosted/pub.dartlang.org/graphs-2.2.0
+    ln -s ${http_multi_server} $out/hosted/pub.dev/http_multi_server-3.2.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${hex} $out/hosted/pub.dartlang.org/hex-0.2.0
+    ln -s ${http_parser} $out/hosted/pub.dev/http_parser-4.0.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${http_multi_server} $out/hosted/pub.dartlang.org/http_multi_server-3.2.1
+    ln -s ${io} $out/hosted/pub.dev/io-1.0.4
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${http_parser} $out/hosted/pub.dartlang.org/http_parser-4.0.2
+    ln -s ${js} $out/hosted/pub.dev/js-0.6.7
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${io} $out/hosted/pub.dartlang.org/io-1.0.3
+    ln -s ${json_annotation} $out/hosted/pub.dev/json_annotation-4.8.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${js} $out/hosted/pub.dartlang.org/js-0.6.5
+    ln -s ${json_serializable} $out/hosted/pub.dev/json_serializable-6.6.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${json_annotation} $out/hosted/pub.dartlang.org/json_annotation-4.7.0
+    ln -s ${logging} $out/hosted/pub.dev/logging-1.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${json_serializable} $out/hosted/pub.dartlang.org/json_serializable-6.5.4
+    ln -s ${matcher} $out/hosted/pub.dev/matcher-0.12.16
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${logging} $out/hosted/pub.dartlang.org/logging-1.0.2
+    ln -s ${meta} $out/hosted/pub.dev/meta-1.9.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${matcher} $out/hosted/pub.dartlang.org/matcher-0.12.13
+    ln -s ${mime} $out/hosted/pub.dev/mime-1.0.4
-
-    mkdir -p $out/hosted/pub.dartlang.org
-    ln -s ${meta} $out/hosted/pub.dartlang.org/meta-1.8.0
-
-    mkdir -p $out/hosted/pub.dartlang.org
-    ln -s ${mime} $out/hosted/pub.dartlang.org/mime-1.0.2
 
     mkdir -p $out/hosted/git.polynom.me%47api%47packages%47Moxxy%47pub%47
-    ln -s ${moxlib} $out/hosted/git.polynom.me%47api%47packages%47Moxxy%47pub%47/moxlib-0.1.5
+    ln -s ${moxlib} $out/hosted/git.polynom.me%47api%47packages%47Moxxy%47pub%47/moxlib-0.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${node_preamble} $out/hosted/pub.dartlang.org/node_preamble-2.0.1
+    ln -s ${node_preamble} $out/hosted/pub.dev/node_preamble-2.0.2
 
     mkdir -p $out/hosted/git.polynom.me%47api%47packages%47PapaTutuWawa%47pub%47
-    ln -s ${omemo_dart} $out/hosted/git.polynom.me%47api%47packages%47PapaTutuWawa%47pub%47/omemo_dart-0.4.3
+    ln -s ${omemo_dart} $out/hosted/git.polynom.me%47api%47packages%47PapaTutuWawa%47pub%47/omemo_dart-0.5.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${package_config} $out/hosted/pub.dartlang.org/package_config-2.1.0
+    ln -s ${package_config} $out/hosted/pub.dev/package_config-2.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${path} $out/hosted/pub.dartlang.org/path-1.8.2
+    ln -s ${path} $out/hosted/pub.dev/path-1.8.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${pedantic} $out/hosted/pub.dartlang.org/pedantic-1.11.1
+    ln -s ${pedantic} $out/hosted/pub.dev/pedantic-1.11.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${petitparser} $out/hosted/pub.dartlang.org/petitparser-5.1.0
+    ln -s ${petitparser} $out/hosted/pub.dev/petitparser-5.4.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${pinenacl} $out/hosted/pub.dartlang.org/pinenacl-0.5.1
+    ln -s ${pinenacl} $out/hosted/pub.dev/pinenacl-0.5.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${pool} $out/hosted/pub.dartlang.org/pool-1.5.1
+    ln -s ${pool} $out/hosted/pub.dev/pool-1.5.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${pub_semver} $out/hosted/pub.dartlang.org/pub_semver-2.1.2
+    ln -s ${protobuf} $out/hosted/pub.dev/protobuf-2.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${pubspec_parse} $out/hosted/pub.dartlang.org/pubspec_parse-1.2.1
+    ln -s ${protoc_plugin} $out/hosted/pub.dev/protoc_plugin-20.0.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${random_string} $out/hosted/pub.dartlang.org/random_string-2.3.1
+    ln -s ${pub_semver} $out/hosted/pub.dev/pub_semver-2.1.4
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${saslprep} $out/hosted/pub.dartlang.org/saslprep-1.0.2
+    ln -s ${pubspec_parse} $out/hosted/pub.dev/pubspec_parse-1.2.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${shelf} $out/hosted/pub.dartlang.org/shelf-1.4.0
+    ln -s ${random_string} $out/hosted/pub.dev/random_string-2.3.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${shelf_packages_handler} $out/hosted/pub.dartlang.org/shelf_packages_handler-3.0.1
+    ln -s ${saslprep} $out/hosted/pub.dev/saslprep-1.0.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${shelf_static} $out/hosted/pub.dartlang.org/shelf_static-1.1.1
+    ln -s ${shelf} $out/hosted/pub.dev/shelf-1.4.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${shelf_web_socket} $out/hosted/pub.dartlang.org/shelf_web_socket-1.0.3
+    ln -s ${shelf_packages_handler} $out/hosted/pub.dev/shelf_packages_handler-3.0.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${source_gen} $out/hosted/pub.dartlang.org/source_gen-1.2.6
+    ln -s ${shelf_static} $out/hosted/pub.dev/shelf_static-1.1.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${source_helper} $out/hosted/pub.dartlang.org/source_helper-1.3.3
+    ln -s ${shelf_web_socket} $out/hosted/pub.dev/shelf_web_socket-1.0.4
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${source_map_stack_trace} $out/hosted/pub.dartlang.org/source_map_stack_trace-2.1.1
+    ln -s ${source_gen} $out/hosted/pub.dev/source_gen-1.3.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${source_maps} $out/hosted/pub.dartlang.org/source_maps-0.10.11
+    ln -s ${source_helper} $out/hosted/pub.dev/source_helper-1.3.4
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${source_span} $out/hosted/pub.dartlang.org/source_span-1.9.1
+    ln -s ${source_map_stack_trace} $out/hosted/pub.dev/source_map_stack_trace-2.1.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${stack_trace} $out/hosted/pub.dartlang.org/stack_trace-1.11.0
+    ln -s ${source_maps} $out/hosted/pub.dev/source_maps-0.10.12
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${stream_channel} $out/hosted/pub.dartlang.org/stream_channel-2.1.1
+    ln -s ${source_span} $out/hosted/pub.dev/source_span-1.10.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${stream_transform} $out/hosted/pub.dartlang.org/stream_transform-2.1.0
+    ln -s ${stack_trace} $out/hosted/pub.dev/stack_trace-1.11.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${string_scanner} $out/hosted/pub.dartlang.org/string_scanner-1.2.0
+    ln -s ${stream_channel} $out/hosted/pub.dev/stream_channel-2.1.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${synchronized} $out/hosted/pub.dartlang.org/synchronized-3.0.0+2
+    ln -s ${stream_transform} $out/hosted/pub.dev/stream_transform-2.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${term_glyph} $out/hosted/pub.dartlang.org/term_glyph-1.2.1
+    ln -s ${string_scanner} $out/hosted/pub.dev/string_scanner-1.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${test} $out/hosted/pub.dartlang.org/test-1.22.0
+    ln -s ${synchronized} $out/hosted/pub.dev/synchronized-3.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${test_api} $out/hosted/pub.dartlang.org/test_api-0.4.16
+    ln -s ${term_glyph} $out/hosted/pub.dev/term_glyph-1.2.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${test_core} $out/hosted/pub.dartlang.org/test_core-0.4.20
+    ln -s ${test} $out/hosted/pub.dev/test-1.24.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${timing} $out/hosted/pub.dartlang.org/timing-1.0.0
+    ln -s ${test_api} $out/hosted/pub.dev/test_api-0.6.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${typed_data} $out/hosted/pub.dartlang.org/typed_data-1.3.1
+    ln -s ${test_core} $out/hosted/pub.dev/test_core-0.5.3
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${unorm_dart} $out/hosted/pub.dartlang.org/unorm_dart-0.2.0
+    ln -s ${timing} $out/hosted/pub.dev/timing-1.0.1
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${uuid} $out/hosted/pub.dartlang.org/uuid-3.0.5
+    ln -s ${typed_data} $out/hosted/pub.dev/typed_data-1.3.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${very_good_analysis} $out/hosted/pub.dartlang.org/very_good_analysis-3.1.0
+    ln -s ${unorm_dart} $out/hosted/pub.dev/unorm_dart-0.2.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${vm_service} $out/hosted/pub.dartlang.org/vm_service-9.4.0
+    ln -s ${uuid} $out/hosted/pub.dev/uuid-3.0.7
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${watcher} $out/hosted/pub.dartlang.org/watcher-1.0.2
+    ln -s ${very_good_analysis} $out/hosted/pub.dev/very_good_analysis-3.1.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${web_socket_channel} $out/hosted/pub.dartlang.org/web_socket_channel-2.2.0
+    ln -s ${vm_service} $out/hosted/pub.dev/vm_service-11.10.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${webkit_inspection_protocol} $out/hosted/pub.dartlang.org/webkit_inspection_protocol-1.2.0
+    ln -s ${watcher} $out/hosted/pub.dev/watcher-1.0.2
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${xml} $out/hosted/pub.dartlang.org/xml-6.2.0
+    ln -s ${web_socket_channel} $out/hosted/pub.dev/web_socket_channel-2.4.0
 
-    mkdir -p $out/hosted/pub.dartlang.org
+    mkdir -p $out/hosted/pub.dev
-    ln -s ${yaml} $out/hosted/pub.dartlang.org/yaml-3.1.1
+    ln -s ${webkit_inspection_protocol} $out/hosted/pub.dev/webkit_inspection_protocol-1.2.0
+
+    mkdir -p $out/hosted/pub.dev
+    ln -s ${xml} $out/hosted/pub.dev/xml-6.3.0
+
+    mkdir -p $out/hosted/pub.dev
+    ln -s ${yaml} $out/hosted/pub.dev/yaml-3.1.2
 '';
 
 }

packages/moxxmpp/CHANGELOG.md

@@ -1,3 +1,39 @@
+## 0.4.1
+- Moved FAST from staging to xep_0484.dart
+
+## 0.4.0
+
+- **BREAKING**: Remove `lastResource` from `XmppConnection`'s `connect` method. Instead, set the `StreamManagementNegotiator`'s `resource` attribute instead. Since the resource can only really be restored by stream management, this is no issue.
+- **BREAKING**: Changed order of parameters of `CryptographicHashManager.hashFromData`
+- **BREAKING**: Removed support for XEP-0414, as the (supported) hash computations are already implemented by `CryptographicHashManager.hashFromData`.
+- The `DiscoManager` now only handled entity capabilities if a `EntityCapabilityManager` is registered.
+- The `EntityCapabilityManager` now verifies and validates its data before caching.
+- **BREAKING**: Added the `resumed` parameter to `StreamNegotiationsDoneEvent`. Use this to check if the current stream is new or resumed instead of using the `ConnectionStateChangedEvent`.
+- **BREAKING**: Remove `DiscoManager.discoInfoCapHashQuery`.
+- **BREAKING**: The entity argument of `DiscoManager.discoInfoQuery` and `DiscoManager.discoItemsQuery` are now `JID` instead of `String`.
+- **BREAKING**: `PubSubManager` and `UserAvatarManager` now use `JID` instead of `String`.
+- **BREAKING**: `XmppConnection.sendStanza` not only takes a `StanzaDetails` argument.
+- Sent stanzas are now kept in a queue until sent.
+- **BREAKING**: `MessageManager.sendMessage` does not use `MessageDetails` anymore. Instead, use `TypedMap`.
+- `MessageManager` now allows registering callbacks for adding data whenever a message is sent.
+- **BREAKING**: `MessageEvent` now makes use of `TypedMap`.
+- **BREAKING**: Removed `PresenceReceivedEvent`. Use a manager registering handlers with priority greater than `[PresenceManager.presenceHandlerPriority]` instead.
+- **BREAKING**: `ChatState.toString()` is now `ChatState.toName()`
+- **BREAKING**: Overriding `BaseOmemoManager` is no longer required. `OmemoManager` now takes callback methods instead.
+- Removed `ErrorResponseDiscoError` from the possible XEP-0030 errors.
+- **BREAKING**: Removed "Extensible File Thumbnails" (The `Thumbnail` type).
+- *BREAKING*: Rename `UserAvatarManager`'s `getUserAvatar` to `getUserAvatarData`. It now also requires the id of the avatar to fetch
+- *BREAKING*: `UserAvatarManager`'s `getAvatarId` with `getLatestMetadata`.
+- The `PubSubManager` now supports PubSub's `max_items` in `getItems`.
+- *BREAKING*: `vCardManager`'s `VCardAvatarUpdatedEvent` no longer automatically requests the newest VCard avatar.
+- *BREAKING*: `XmppConnection` now tries to ensure that incoming data is processed in-order. The only exception are awaited stanzas as they are allowed to bypass the queue.
+- *BREAKING*: If a stanza handler causes an exception, the handler is simply skipped while processing.
+- Add better logging around what stanza handler is running and if they end processing early.
+
+## 0.3.1
+
+- Fix some issues with running moxxmpp as a component
+
 ## 0.3.0
 
 - **BREAKING**: Removed `connectAwaitable` and merged it with `connect`.

packages/moxxmpp/README.md

@@ -9,7 +9,7 @@ Include the following as a dependency in your pubspec file:
 ```
  moxxmpp:
     hosted: https://git.polynom.me/api/packages/Moxxy/pub
-    version: 0.2.0
+    version: 0.3.1
 ```
 
 You can find the documentation [here](https://moxxy.org/developers/docs/moxxmpp/).

packages/moxxmpp/lib/moxxmpp.dart

@@ -18,7 +18,6 @@ export 'package:moxxmpp/src/managers/namespaces.dart';
 export 'package:moxxmpp/src/managers/priorities.dart';
 export 'package:moxxmpp/src/message.dart';
 export 'package:moxxmpp/src/namespaces.dart';
-export 'package:moxxmpp/src/negotiators/manager.dart';
 export 'package:moxxmpp/src/negotiators/namespaces.dart';
 export 'package:moxxmpp/src/negotiators/negotiator.dart';
 export 'package:moxxmpp/src/ping.dart';
@@ -39,15 +38,17 @@ export 'package:moxxmpp/src/settings.dart';
 export 'package:moxxmpp/src/socket.dart';
 export 'package:moxxmpp/src/stanza.dart';
 export 'package:moxxmpp/src/stringxml.dart';
-export 'package:moxxmpp/src/types/result.dart';
+export 'package:moxxmpp/src/util/typed_map.dart';
-export 'package:moxxmpp/src/xeps/staging/extensible_file_thumbnails.dart';
-export 'package:moxxmpp/src/xeps/staging/fast.dart';
 export 'package:moxxmpp/src/xeps/staging/file_upload_notification.dart';
 export 'package:moxxmpp/src/xeps/xep_0004.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/errors.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/helpers.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/types.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/xep_0030.dart';
+export 'package:moxxmpp/src/xeps/xep_0045/errors.dart';
+export 'package:moxxmpp/src/xeps/xep_0045/events.dart';
+export 'package:moxxmpp/src/xeps/xep_0045/types.dart';
+export 'package:moxxmpp/src/xeps/xep_0045/xep_0045.dart';
 export 'package:moxxmpp/src/xeps/xep_0054.dart';
 export 'package:moxxmpp/src/xeps/xep_0060/errors.dart';
 export 'package:moxxmpp/src/xeps/xep_0060/helpers.dart';
@@ -63,6 +64,7 @@ export 'package:moxxmpp/src/xeps/xep_0198/nonzas.dart';
 export 'package:moxxmpp/src/xeps/xep_0198/state.dart';
 export 'package:moxxmpp/src/xeps/xep_0198/xep_0198.dart';
 export 'package:moxxmpp/src/xeps/xep_0203.dart';
+export 'package:moxxmpp/src/xeps/xep_0264.dart';
 export 'package:moxxmpp/src/xeps/xep_0280.dart';
 export 'package:moxxmpp/src/xeps/xep_0297.dart';
 export 'package:moxxmpp/src/xeps/xep_0300.dart';
@@ -85,7 +87,7 @@ export 'package:moxxmpp/src/xeps/xep_0388/errors.dart';
 export 'package:moxxmpp/src/xeps/xep_0388/negotiators.dart';
 export 'package:moxxmpp/src/xeps/xep_0388/user_agent.dart';
 export 'package:moxxmpp/src/xeps/xep_0388/xep_0388.dart';
-export 'package:moxxmpp/src/xeps/xep_0414.dart';
+export 'package:moxxmpp/src/xeps/xep_0421.dart';
 export 'package:moxxmpp/src/xeps/xep_0424.dart';
 export 'package:moxxmpp/src/xeps/xep_0444.dart';
 export 'package:moxxmpp/src/xeps/xep_0446.dart';
@@ -93,3 +95,4 @@ export 'package:moxxmpp/src/xeps/xep_0447.dart';
 export 'package:moxxmpp/src/xeps/xep_0448.dart';
 export 'package:moxxmpp/src/xeps/xep_0449.dart';
 export 'package:moxxmpp/src/xeps/xep_0461.dart';
+export 'package:moxxmpp/src/xeps/xep_0484.dart';

packages/moxxmpp/lib/src/awaiter.dart

@@ -1,35 +1,13 @@
 import 'dart:async';
-import 'package:meta/meta.dart';
-import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 import 'package:synchronized/synchronized.dart';
 
-/// A surrogate key for awaiting stanzas.
+/// (JID we sent a stanza to, the id of the sent stanza, the tag of the sent stanza).
-@immutable
+// ignore: avoid_private_typedef_functions
-class _StanzaSurrogateKey {
+typedef _StanzaCompositeKey = (String?, String, String);
-  const _StanzaSurrogateKey(this.sentTo, this.id, this.tag);
 
-  /// The JID the original stanza was sent to. We expect the result to come from the
+/// Callback function that returns the bare JID of the connection as a String.
-  /// same JID.
+typedef GetBareJidCallback = String Function();
-  final String sentTo;
-
-  /// The ID of the original stanza. We expect the result to have the same ID.
-  final String id;
-
-  /// The tag name of the stanza.
-  final String tag;
-
-  @override
-  int get hashCode => sentTo.hashCode ^ id.hashCode ^ tag.hashCode;
-
-  @override
-  bool operator ==(Object other) {
-    return other is _StanzaSurrogateKey &&
-        other.sentTo == sentTo &&
-        other.id == id &&
-        other.tag == tag;
-  }
-}
 
 /// This class handles the await semantics for stanzas. Stanzas are given a "unique"
 /// key equal to the tuple (to, id, tag) with which their response is identified.
@@ -40,8 +18,12 @@ class _StanzaSurrogateKey {
 ///
 /// This class also handles some "edge cases" of RFC 6120, like an empty "from" attribute.
 class StanzaAwaiter {
+  StanzaAwaiter(this._bareJidCallback);
+
+  final GetBareJidCallback _bareJidCallback;
+
   /// The pending stanzas, identified by their surrogate key.
-  final Map<_StanzaSurrogateKey, Completer<XMLNode>> _pending = {};
+  final Map<_StanzaCompositeKey, Completer<XMLNode>> _pending = {};
 
   /// The critical section for accessing [StanzaAwaiter._pending].
   final Lock _lock = Lock();
@@ -52,30 +34,33 @@ class StanzaAwaiter {
   /// [tag] is the stanza's tag name.
   ///
   /// Returns a future that might resolve to the response to the stanza.
-  Future<Future<XMLNode>> addPending(String to, String id, String tag) async {
+  Future<Future<XMLNode>> addPending(String? to, String id, String tag) async {
+    // Check if we want to send a stanza to our bare JID and replace it with null.
+    final processedTo = to != null && to == _bareJidCallback() ? null : to;
+
     final completer = await _lock.synchronized(() {
       final completer = Completer<XMLNode>();
-      _pending[_StanzaSurrogateKey(to, id, tag)] = completer;
+      _pending[(processedTo, id, tag)] = completer;
       return completer;
     });
 
     return completer.future;
   }
 
-  /// Checks if the stanza [stanza] is being awaited. [bareJid] is the bare JID of
+  /// Checks if the stanza [stanza] is being awaited.
-  /// the connection.
   /// If [stanza] is awaited, resolves the future and returns true. If not, returns
   /// false.
-  Future<bool> onData(XMLNode stanza, JID bareJid) async {
+  Future<bool> onData(XMLNode stanza) async {
-    assert(bareJid.isBare(), 'bareJid must be bare');
-
     final id = stanza.attributes['id'] as String?;
     if (id == null) return false;
 
-    final key = _StanzaSurrogateKey(
+    // Check if we want to send a stanza to our bare JID and replace it with null.
-      // Section 8.1.2.1 § 3 of RFC 6120 says that an empty "from" indicates that the
+    final from = stanza.attributes['from'] as String?;
-      // attribute is implicitly from our own bare JID.
+    final processedFrom =
-      stanza.attributes['from'] as String? ?? bareJid.toString(),
+        from != null && from == _bareJidCallback() ? null : from;
+
+    final key = (
+      processedFrom,
       id,
       stanza.tag,
     );
@@ -91,4 +76,19 @@ class StanzaAwaiter {
       return false;
     });
   }
+
+  /// Checks if [stanza] represents a stanza that is awaited. Returns true, if [stanza]
+  /// is awaited. False, if not.
+  Future<bool> isAwaited(XMLNode stanza) async {
+    final id = stanza.attributes['id'] as String?;
+    if (id == null) return false;
+
+    final key = (
+      stanza.attributes['from'] as String?,
+      id,
+      stanza.tag,
+    );
+
+    return _lock.synchronized(() => _pending.containsKey(key));
+  }
 }

packages/moxxmpp/lib/src/buffer.dart

@@ -1,79 +0,0 @@
-import 'dart:async';
-import 'package:moxxmpp/src/stringxml.dart';
-import 'package:xml/xml.dart';
-import 'package:xml/xml_events.dart';
-
-/// A result object for XmlStreamBuffer.
-abstract class XmlStreamBufferObject {}
-
-/// A complete XML element returned by the stream buffer.
-class XmlStreamBufferElement extends XmlStreamBufferObject {
-  XmlStreamBufferElement(this.node);
-
-  /// The actual [XMLNode].
-  final XMLNode node;
-}
-
-/// Just the stream header of a new XML stream.
-class XmlStreamBufferHeader extends XmlStreamBufferObject {
-  XmlStreamBufferHeader(this.attributes);
-
-  /// The headers of the stream header.
-  final Map<String, String> attributes;
-}
-
-/// A buffer to put between a socket's input and a full XML stream.
-class XmlStreamBuffer
-    extends StreamTransformerBase<String, XmlStreamBufferObject> {
-  final StreamController<XmlStreamBufferObject> _streamController =
-      StreamController<XmlStreamBufferObject>();
-
-  @override
-  Stream<XmlStreamBufferObject> bind(Stream<String> stream) {
-    final events = stream.toXmlEvents().asBroadcastStream();
-    events.transform(
-      StreamTransformer<List<XmlEvent>, XmlStartElementEvent>.fromHandlers(
-        handleData: (events, sink) {
-          for (final event in events) {
-            if (event is! XmlStartElementEvent) {
-              continue;
-            }
-            if (event.name != 'stream:stream') {
-              continue;
-            }
-
-            sink.add(event);
-          }
-        },
-      ),
-    ).listen((event) {
-      _streamController.add(
-        XmlStreamBufferHeader(
-          Map<String, String>.fromEntries(
-            event.attributes.map((attr) {
-              return MapEntry(attr.name, attr.value);
-            }),
-          ),
-        ),
-      );
-    });
-
-    events
-        .selectSubtreeEvents((event) {
-          return event.qualifiedName != 'stream:stream';
-        })
-        .transform(const XmlNodeDecoder())
-        .listen((nodes) {
-          for (final node in nodes) {
-            if (node.nodeType == XmlNodeType.ELEMENT) {
-              _streamController.add(
-                XmlStreamBufferElement(
-                  XMLNode.fromXmlElement(node as XmlElement),
-                ),
-              );
-            }
-          }
-        });
-    return _streamController.stream;
-  }
-}

packages/moxxmpp/lib/src/connection.dart

@@ -3,20 +3,20 @@ import 'package:logging/logging.dart';
 import 'package:meta/meta.dart';
 import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/awaiter.dart';
-import 'package:moxxmpp/src/buffer.dart';
 import 'package:moxxmpp/src/connection_errors.dart';
 import 'package:moxxmpp/src/connectivity.dart';
 import 'package:moxxmpp/src/errors.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/handlers/base.dart';
 import 'package:moxxmpp/src/iq.dart';
+import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/attributes.dart';
 import 'package:moxxmpp/src/managers/base.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/managers/handlers.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
-import 'package:moxxmpp/src/negotiators/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
+import 'package:moxxmpp/src/parser.dart';
 import 'package:moxxmpp/src/presence.dart';
 import 'package:moxxmpp/src/reconnect.dart';
 import 'package:moxxmpp/src/roster/roster.dart';
@@ -25,12 +25,12 @@ import 'package:moxxmpp/src/settings.dart';
 import 'package:moxxmpp/src/socket.dart';
 import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
+import 'package:moxxmpp/src/util/incoming_queue.dart';
+import 'package:moxxmpp/src/util/queue.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
 import 'package:moxxmpp/src/xeps/xep_0030/xep_0030.dart';
-import 'package:moxxmpp/src/xeps/xep_0198/negotiator.dart';
 import 'package:moxxmpp/src/xeps/xep_0198/xep_0198.dart';
 import 'package:moxxmpp/src/xeps/xep_0352.dart';
-import 'package:synchronized/synchronized.dart';
 import 'package:uuid/uuid.dart';
 
 /// The states the XmppConnection can be in
@@ -49,16 +49,17 @@ enum XmppConnectionState {
   error
 }
 
-/// Metadata for [XmppConnection.sendStanza].
+/// (The actual stanza handler, Name of the owning manager).
-enum StanzaFromType {
+typedef _StanzaHandlerWrapper = (StanzaHandler, String);
-  /// Add the full JID to the stanza as the from attribute
-  full,
 
-  /// Add the bare JID to the stanza as the from attribute
+/// Wrapper around [stanzaHandlerSortComparator] for [_StanzaHandlerWrapper].
-  bare,
+int _stanzaHandlerWrapperSortComparator(
-
+  _StanzaHandlerWrapper a,
-  /// Add no JID as the from attribute
+  _StanzaHandlerWrapper b,
-  none,
+) {
+  final (ha, _) = a;
+  final (hb, _) = b;
+  return stanzaHandlerSortComparator(ha, hb);
 }
 
 /// This class is a connection to the server.
@@ -70,7 +71,11 @@ class XmppConnection {
     this._socket, {
     this.connectingTimeout = const Duration(minutes: 2),
   })  : _reconnectionPolicy = reconnectionPolicy,
-        _connectivityManager = connectivityManager {
+        _connectivityManager = connectivityManager,
+        assert(
+          _socket.getDataStream().isBroadcast,
+          "The socket's data stream must be a broadcast stream",
+        ) {
     // Allow the reconnection policy to perform reconnections by itself
     _reconnectionPolicy.register(
       _attemptReconnection,
@@ -83,12 +88,27 @@ class XmppConnection {
       () => _isAuthenticated,
       sendRawXML,
       () => connectionSettings,
+      () {
+        _log.finest('Resetting stream parser');
+        _streamParser.reset();
+      },
     );
 
+    _stanzaAwaiter = StanzaAwaiter(
+      () => connectionSettings.jid.toBare().toString(),
+    );
+    _incomingStanzaQueue = IncomingStanzaQueue(handleXmlStream, _stanzaAwaiter);
     _socketStream = _socket.getDataStream();
-    // TODO(Unknown): Handle on done
+    _socketStream
-    _socketStream.transform(_streamBuffer).forEach(handleXmlStream);
+        .transform(_streamParser)
-    _socket.getEventStream().listen(_handleSocketEvent);
+        .forEach(_incomingStanzaQueue.addStanza);
+    _socketStream.listen(_handleOnDataCallbacks);
+    _socket.getEventStream().listen(handleSocketEvent);
+
+    _stanzaQueue = AsyncStanzaQueue(
+      _sendStanzaImpl,
+      _canSendData,
+    );
   }
 
   /// The state that the connection is currently in
@@ -112,23 +132,23 @@ class XmppConnection {
   final ConnectivityManager _connectivityManager;
 
   /// A helper for handling await semantics with stanzas
-  final StanzaAwaiter _stanzaAwaiter = StanzaAwaiter();
+  late final StanzaAwaiter _stanzaAwaiter;
 
   /// Sorted list of handlers that we call or incoming and outgoing stanzas
-  final List<StanzaHandler> _incomingStanzaHandlers =
+  final List<_StanzaHandlerWrapper> _incomingStanzaHandlers =
       List.empty(growable: true);
-  final List<StanzaHandler> _incomingPreStanzaHandlers =
+  final List<_StanzaHandlerWrapper> _incomingPreStanzaHandlers =
       List.empty(growable: true);
-  final List<StanzaHandler> _outgoingPreStanzaHandlers =
+  final List<_StanzaHandlerWrapper> _outgoingPreStanzaHandlers =
       List.empty(growable: true);
-  final List<StanzaHandler> _outgoingPostStanzaHandlers =
+  final List<_StanzaHandlerWrapper> _outgoingPostStanzaHandlers =
       List.empty(growable: true);
   final StreamController<XmppEvent> _eventStreamController =
       StreamController.broadcast();
   final Map<String, XmppManagerBase> _xmppManagers = {};
 
-  /// The buffer object to keep split up stanzas together
+  /// The parser for the entire XMPP XML stream.
-  final XmlStreamBuffer _streamBuffer = XmlStreamBuffer();
+  final XMPPStreamParser _streamParser = XMPPStreamParser();
 
   /// UUID object to generate stanza and origin IDs
   final Uuid _uuid = const Uuid();
@@ -140,6 +160,8 @@ class XmppConnection {
   RoutingState _routingState = RoutingState.preConnection;
 
   /// The currently bound resource or '' if none has been bound yet.
+  /// NOTE: A Using the empty string is okay since RFC7622 says that
+  ///       the resource MUST NOT be zero octets.
   String _resource = '';
   String get resource => _resource;
 
@@ -158,10 +180,6 @@ class XmppConnection {
   T? getNegotiatorById<T extends XmppFeatureNegotiatorBase>(String id) =>
       _negotiationsHandler.getNegotiatorById<T>(id);
 
-  /// Prevent data from being passed to _currentNegotiator.negotiator while the negotiator
-  /// is still running.
-  final Lock _negotiationLock = Lock();
-
   /// The logger for the class
   final Logger _log = Logger('XmppConnection');
 
@@ -170,6 +188,17 @@ class XmppConnection {
 
   bool get isAuthenticated => _isAuthenticated;
 
+  late final IncomingStanzaQueue _incomingStanzaQueue;
+
+  late final AsyncStanzaQueue _stanzaQueue;
+
+  /// Returns the JID we authenticate with and add the resource that we have bound.
+  JID _getJidWithResource() {
+    assert(_resource.isNotEmpty, 'The resource must not be empty');
+
+    return connectionSettings.jid.withResource(_resource);
+  }
+
   /// Registers a list of [XmppManagerBase] sub-classes as managers on this connection.
   Future<void> registerManagers(List<XmppManagerBase> managers) async {
     for (final manager in managers) {
@@ -181,7 +210,7 @@ class XmppConnection {
           sendEvent: _sendEvent,
           getConnectionSettings: () => connectionSettings,
           getManagerById: getManagerById,
-          getFullJID: () => connectionSettings.jid.withResource(_resource),
+          getFullJID: _getJidWithResource,
           getSocket: () => _socket,
           getConnection: () => this,
           getNegotiatorById: _negotiationsHandler.getNegotiatorById,
@@ -190,18 +219,25 @@ class XmppConnection {
 
       _xmppManagers[manager.id] = manager;
 
-      _incomingStanzaHandlers.addAll(manager.getIncomingStanzaHandlers());
+      _incomingStanzaHandlers.addAll(
-      _incomingPreStanzaHandlers.addAll(manager.getIncomingPreStanzaHandlers());
+        manager.getIncomingStanzaHandlers().map((h) => (h, manager.name)),
-      _outgoingPreStanzaHandlers.addAll(manager.getOutgoingPreStanzaHandlers());
+      );
-      _outgoingPostStanzaHandlers
+      _incomingPreStanzaHandlers.addAll(
-          .addAll(manager.getOutgoingPostStanzaHandlers());
+        manager.getIncomingPreStanzaHandlers().map((h) => (h, manager.name)),
+      );
+      _outgoingPreStanzaHandlers.addAll(
+        manager.getOutgoingPreStanzaHandlers().map((h) => (h, manager.name)),
+      );
+      _outgoingPostStanzaHandlers.addAll(
+        manager.getOutgoingPostStanzaHandlers().map((h) => (h, manager.name)),
+      );
     }
 
     // Sort them
-    _incomingStanzaHandlers.sort(stanzaHandlerSortComparator);
+    _incomingStanzaHandlers.sort(_stanzaHandlerWrapperSortComparator);
-    _incomingPreStanzaHandlers.sort(stanzaHandlerSortComparator);
+    _incomingPreStanzaHandlers.sort(_stanzaHandlerWrapperSortComparator);
-    _outgoingPreStanzaHandlers.sort(stanzaHandlerSortComparator);
+    _outgoingPreStanzaHandlers.sort(_stanzaHandlerWrapperSortComparator);
-    _outgoingPostStanzaHandlers.sort(stanzaHandlerSortComparator);
+    _outgoingPostStanzaHandlers.sort(_stanzaHandlerWrapperSortComparator);
 
     // Run the post register callbacks
     for (final manager in _xmppManagers.values) {
@@ -232,7 +268,7 @@ class XmppConnection {
           _sendEvent,
           _negotiationsHandler.getNegotiatorById,
           getManagerById,
-          () => connectionSettings.jid.withResource(_resource),
+          _getJidWithResource,
           () => _socket,
           () => _isAuthenticated,
           _setAuthenticated,
@@ -262,26 +298,14 @@ class XmppConnection {
     return getManagerById(presenceManager);
   }
 
-  /// A [DiscoManager] is required so, have a wrapper for getting it.
   /// Returns the registered [DiscoManager].
-  DiscoManager getDiscoManager() {
+  DiscoManager? getDiscoManager() {
-    assert(
+    return getManagerById<DiscoManager>(discoManager);
-      _xmppManagers.containsKey(discoManager),
-      'A DiscoManager is mandatory',
-    );
-
-    return getManagerById(discoManager)!;
   }
 
-  /// A [RosterManager] is required, so have a wrapper for getting it.
   /// Returns the registered [RosterManager].
-  RosterManager getRosterManager() {
+  RosterManager? getRosterManager() {
-    assert(
+    return getManagerById<RosterManager>(rosterManager);
-      _xmppManagers.containsKey(rosterManager),
-      'A RosterManager is mandatory',
-    );
-
-    return getManagerById(rosterManager)!;
   }
 
   /// Returns the registered [StreamManagementManager], if one is registered.
@@ -294,6 +318,13 @@ class XmppConnection {
     return getManagerById(csiManager);
   }
 
+  /// Called whenever we receive data on the socket.
+  Future<void> _handleOnDataCallbacks(String _) async {
+    for (final manager in _xmppManagers.values) {
+      unawaited(manager.onData());
+    }
+  }
+
   /// Attempts to reconnect to the server by following an exponential backoff.
   Future<void> _attemptReconnection() async {
     _log.finest('_attemptReconnection: Setting state to notConnected');
@@ -307,14 +338,16 @@ class XmppConnection {
     // Connect again
     // ignore: cascade_invocations
     _log.finest('Calling _connectImpl() from _attemptReconnection');
-    await _connectImpl(
+    unawaited(
-      waitForConnection: true,
+      _connectImpl(
+        waitForConnection: true,
+      ),
     );
   }
 
   /// Called when a stream ending error has occurred
   Future<void> handleError(XmppError error) async {
-    _log.severe('handleError called with ${error.toString()}');
+    _log.severe('handleError called with $error');
 
     // Whenever we encounter an error that would trigger a reconnection attempt while
     // the connection result is being awaited, don't attempt a reconnection but instead
@@ -364,7 +397,8 @@ class XmppConnection {
   }
 
   /// Called whenever the socket creates an event
-  Future<void> _handleSocketEvent(XmppSocketEvent event) async {
+  @visibleForTesting
+  Future<void> handleSocketEvent(XmppSocketEvent event) async {
     if (event is XmppSocketErrorEvent) {
       await handleError(SocketError(event));
     } else if (event is XmppSocketClosureEvent) {
@@ -406,134 +440,144 @@ class XmppConnection {
 
   /// Returns true if we can send data through the socket.
   Future<bool> _canSendData() async {
-    return [XmppConnectionState.connected, XmppConnectionState.connecting]
+    return await getConnectionState() == XmppConnectionState.connected;
-        .contains(await getConnectionState());
   }
 
-  /// Sends a [stanza] to the server. If stream management is enabled, then keeping track
+  /// Sends a stanza described by [details] to the server. Until sent, the stanza is
-  /// of the stanza is taken care of. Returns a Future that resolves when we receive a
+  /// kept in a queue, that is flushed after going online again. If Stream Management
-  /// response to the stanza.
+  /// is active, stanza's acknowledgement is tracked.
-  ///
-  /// If addFrom is true, then a 'from' attribute will be added to the stanza if
-  /// [stanza] has none.
-  /// If addId is true, then an 'id' attribute will be added to the stanza if [stanza] has
-  /// none.
   // TODO(Unknown): if addId = false, the function crashes.
-  Future<XMLNode> sendStanza(
+  Future<XMLNode?> sendStanza(StanzaDetails details) async {
-    Stanza stanza, {
-    StanzaFromType addFrom = StanzaFromType.full,
-    bool addId = true,
-    bool awaitable = true,
-    bool encrypted = false,
-    bool forceEncryption = false,
-  }) async {
     assert(
-      implies(addId == false && stanza.id == null, !awaitable),
+      implies(
-      'Cannot await a stanza with no id',
+        details.awaitable,
+        details.stanza.id != null && details.stanza.id!.isNotEmpty ||
+            details.addId,
+      ),
+      'An awaitable stanza must have an id',
     );
 
-    // Add extra data in case it was not set
+    final completer = details.awaitable ? Completer<XMLNode>() : null;
-    var stanza_ = stanza;
+    final entry = StanzaQueueEntry(
-    if (addId && (stanza_.id == null || stanza_.id == '')) {
+      details,
-      stanza_ = stanza.copyWith(id: generateId());
+      completer,
-    }
+    );
-    if (addFrom != StanzaFromType.none &&
+
-        (stanza_.from == null || stanza_.from == '')) {
+    if (details.bypassQueue) {
-      switch (addFrom) {
+      await _sendStanzaImpl(entry);
-        case StanzaFromType.full:
+    } else {
-          {
+      await _stanzaQueue.enqueueStanza(entry);
-            stanza_ = stanza_.copyWith(
-              from: connectionSettings.jid.withResource(_resource).toString(),
-            );
-          }
-          break;
-        case StanzaFromType.bare:
-          {
-            stanza_ = stanza_.copyWith(
-              from: connectionSettings.jid.toBare().toString(),
-            );
-          }
-          break;
-        case StanzaFromType.none:
-          break;
-      }
     }
 
+    return completer?.future;
+  }
+
+  Future<void> _sendStanzaImpl(StanzaQueueEntry entry) async {
+    final details = entry.details;
+    var newStanza = details.stanza;
+
+    // Generate an id, if requested
+    if (details.addId && (newStanza.id == null || newStanza.id == '')) {
+      newStanza = newStanza.copyWith(id: generateId());
+    }
+
+    // NOTE: Originally, we handled adding a "from" attribute to the stanza here.
+    //       However, this is not neccessary as RFC 6120 states:
+    //
+    //       > When a server receives an XML stanza from a connected client, the
+    //       > server MUST add a 'from' attribute to the stanza or override the
+    //       > 'from' attribute specified by the client, where the value of the
+    //       > 'from' attribute MUST be the full JID
+    //       > (<localpart@domainpart/resource>) determined by the server for
+    //       > the connected resource that generated the stanza (see
+    //       > Section 4.3.6), or the bare JID (<localpart@domainpart>) in the
+    //       > case of subscription-related presence stanzas (see [XMPP-IM]).
+    //
+    //       This means that even if we add a "from" attribute, the server will discard
+    //       it. If we don't specify it, then the server will add the correct value
+    //       itself.
+
+    // Add the correct stanza namespace
+    newStanza = newStanza.copyWith(
+      xmlns: _negotiationsHandler.getStanzaNamespace(),
+    );
+
+    // Run pre-send handlers
     _log.fine('Running pre stanza handlers..');
     final data = await _runOutgoingPreStanzaHandlers(
-      stanza_,
+      newStanza,
       initial: StanzaHandlerData(
         false,
         false,
-        null,
+        newStanza,
-        stanza_,
+        details.extensions ?? TypedMap(),
-        encrypted: encrypted,
+        encrypted: details.encrypted,
-        forceEncryption: forceEncryption,
+        shouldEncrypt: details.shouldEncrypt,
+        forceEncryption: details.forceEncryption,
       ),
     );
     _log.fine('Done');
 
+    // Cancel sending, if the pre-send handlers indicated it.
     if (data.cancel) {
       _log.fine('A stanza handler indicated that it wants to cancel sending.');
       await _sendEvent(StanzaSendingCancelledEvent(data));
-      return Stanza(
+
-        tag: data.stanza.tag,
+      // Resolve the future, if one was given.
-        to: data.stanza.from,
+      if (details.awaitable) {
-        from: data.stanza.to,
+        entry.completer!.complete(
-        attributes: <String, String>{
+          Stanza(
-          'type': 'error',
+            tag: data.stanza.tag,
-          ...data.stanza.id != null
+            to: data.stanza.from,
-              ? {
+            from: data.stanza.to,
-                  'id': data.stanza.id!,
+            attributes: <String, String>{
-                }
+              'type': 'error',
-              : {},
+              if (data.stanza.id != null) 'id': data.stanza.id!,
-        },
+            },
-      );
+          ),
+        );
+      }
+      return;
     }
 
+    // Log the (raw) stanza
     final prefix = data.encrypted ? '(Encrypted) ' : '';
-    _log.finest('==> $prefix${stanza_.toXml()}');
+    _log.finest('==> $prefix${newStanza.toXml()}');
 
-    final stanzaString = data.stanza.toXml();
+    if (details.awaitable) {
-
+      await _stanzaAwaiter
-    // ignore: cascade_invocations
+          .addPending(
-    _log.fine('Attempting to acquire lock for ${data.stanza.id}...');
-    // TODO(PapaTutuWawa): Handle this much more graceful
-    var future = Future.value(XMLNode(tag: 'not-used'));
-    if (awaitable) {
-      future = await _stanzaAwaiter.addPending(
         // A stanza with no to attribute is for direct processing by the server. As such,
         // we can correlate it by just *assuming* we have that attribute
         // (RFC 6120 Section 8.1.1.1)
-        data.stanza.to ?? connectionSettings.jid.toBare().toString(),
+        data.stanza.to,
         data.stanza.id!,
         data.stanza.tag,
-      );
+      )
+          .then((result) {
+        entry.completer!.complete(result);
+      });
     }
 
-    // This uses the StreamManager to behave like a send queue
     if (await _canSendData()) {
-      _socket.write(stanzaString);
+      _socket.write(data.stanza.toXml());
-
-      // Try to ack every stanza
-      // NOTE: Here we have send an Ack request nonza. This is now done by StreamManagementManager when receiving the StanzaSentEvent
     } else {
-      _log.fine('_canSendData() returned false.');
+      _log.fine('Not sending data as _canSendData() returned false.');
     }
 
+    // Run post-send handlers
     _log.fine('Running post stanza handlers..');
     await _runOutgoingPostStanzaHandlers(
-      stanza_,
+      newStanza,
       initial: StanzaHandlerData(
         false,
         false,
-        null,
+        newStanza,
-        stanza_,
+        details.postSendExtensions ?? TypedMap<StanzaHandlerExtension>(),
+        encrypted: data.encrypted,
       ),
     );
     _log.fine('Done');
-
-    return future;
   }
 
   /// Called when we timeout during connecting
@@ -557,21 +601,29 @@ class XmppConnection {
     // Set the new routing state
     _updateRoutingState(RoutingState.handleStanzas);
 
-    // Set the connection state
-    await _setConnectionState(XmppConnectionState.connected);
-
     // Enable reconnections
     if (_enableReconnectOnSuccess) {
       await _reconnectionPolicy.setShouldReconnect(true);
     }
 
+    // Tell consumers of the event stream that we're done with stream feature
+    // negotiations
+    await _sendEvent(
+      StreamNegotiationsDoneEvent(
+        getManagerById<StreamManagementManager>(smManager)?.streamResumed ??
+            false,
+      ),
+    );
+
+    // Set the connection state
+    await _setConnectionState(XmppConnectionState.connected);
+
     // Resolve the connection completion future
     _connectionCompleter?.complete(const Result(true));
     _connectionCompleter = null;
 
-    // Tell consumers of the event stream that we're done with stream feature
+    // Flush the stanza send queue
-    // negotiations
+    await _stanzaQueue.restart();
-    await _sendEvent(StreamNegotiationsDoneEvent());
   }
 
   /// Sets the connection state to [state] and triggers an event of type
@@ -599,15 +651,10 @@ class XmppConnection {
       _destroyConnectingTimer();
     }
 
-    final sm =
-        _negotiationsHandler.getNegotiatorById<StreamManagementNegotiator>(
-      streamManagementNegotiator,
-    );
     await _sendEvent(
       ConnectionStateChangedEvent(
         state,
         oldState,
-        sm?.isResumed ?? false,
       ),
     );
   }
@@ -638,15 +685,30 @@ class XmppConnection {
   /// call its callback and end the processing if the callback returned true; continue
   /// if it returned false.
   Future<StanzaHandlerData> _runStanzaHandlers(
-    List<StanzaHandler> handlers,
+    List<_StanzaHandlerWrapper> handlers,
     Stanza stanza, {
     StanzaHandlerData? initial,
   }) async {
-    var state = initial ?? StanzaHandlerData(false, false, null, stanza);
+    var state = initial ?? StanzaHandlerData(false, false, stanza, TypedMap());
-    for (final handler in handlers) {
+    for (final handlerRaw in handlers) {
+      final (handler, managerName) = handlerRaw;
       if (handler.matches(state.stanza)) {
-        state = await handler.callback(state.stanza, state);
+        _log.finest(
-        if (state.done || state.cancel) return state;
+          'Running handler for ${stanza.tag} (${stanza.attributes["id"]}) of $managerName',
+        );
+        try {
+          state = await handler.callback(state.stanza, state);
+        } catch (ex) {
+          _log.severe(
+            'Handler from $managerName for ${stanza.tag} (${stanza.attributes["id"]}) failed with "$ex"',
+          );
+        }
+        if (state.done || state.cancel) {
+          _log.finest(
+            'Processing ended early for ${stanza.tag} (${stanza.attributes["id"]}) by $managerName',
+          );
+          return state;
+        }
       }
     }
 
@@ -717,14 +779,20 @@ class XmppConnection {
     // it.
     final incomingPreHandlers = await _runIncomingPreStanzaHandlers(stanza);
     final prefix = incomingPreHandlers.encrypted &&
-            incomingPreHandlers.other['encryption_error'] == null
+            incomingPreHandlers.encryptionError == null
         ? '(Encrypted) '
         : '';
     _log.finest('<== $prefix${incomingPreHandlers.stanza.toXml()}');
 
+    if (incomingPreHandlers.skip) {
+      _log.fine(
+        'Not processing stanza (${incomingPreHandlers.stanza.tag}, ${incomingPreHandlers.stanza.id}) due to skip=true.',
+      );
+      return;
+    }
+
     final awaited = await _stanzaAwaiter.onData(
       incomingPreHandlers.stanza,
-      connectionSettings.jid.toBare(),
     );
     if (awaited) {
       return;
@@ -736,29 +804,33 @@ class XmppConnection {
       initial: StanzaHandlerData(
         false,
         incomingPreHandlers.cancel,
-        incomingPreHandlers.cancelReason,
         incomingPreHandlers.stanza,
+        incomingPreHandlers.extensions,
         encrypted: incomingPreHandlers.encrypted,
-        other: incomingPreHandlers.other,
+        encryptionError: incomingPreHandlers.encryptionError,
+        cancelReason: incomingPreHandlers.cancelReason,
       ),
     );
     if (!incomingHandlers.done) {
+      _log.warning(
+        'Returning error for unhandled stanza ${incomingPreHandlers.stanza.tag}',
+      );
       await handleUnhandledStanza(this, incomingPreHandlers);
     }
   }
 
   /// Called whenever we receive data that has been parsed as XML.
-  Future<void> handleXmlStream(XmlStreamBufferObject event) async {
+  Future<void> handleXmlStream(XMPPStreamObject event) async {
-    if (event is XmlStreamBufferHeader) {
+    if (event is XMPPStreamHeader) {
       await _negotiationsHandler.negotiate(event);
       return;
     }
 
     assert(
-      event is XmlStreamBufferElement,
+      event is XMPPStreamElement,
-      'The event must be a XmlStreamBufferElement',
+      'The event must be a XMPPStreamElement',
     );
-    final node = (event as XmlStreamBufferElement).node;
+    final node = (event as XMPPStreamElement).node;
 
     // Check if we received a stream error
     if (node.tag == 'stream:error') {
@@ -779,14 +851,12 @@ class XmppConnection {
         // causing (a) the negotiator to become confused and (b) the stanzas/nonzas to be
         // missed. This causes the data to wait while the negotiator is running and thus
         // prevent this issue.
-        await _negotiationLock.synchronized(() async {
+        if (_routingState != RoutingState.negotiating) {
-          if (_routingState != RoutingState.negotiating) {
+          unawaited(handleXmlStream(event));
-            unawaited(handleXmlStream(event));
+          return;
-            return;
+        }
-          }
 
-          await _negotiationsHandler.negotiate(event);
+        await _negotiationsHandler.negotiate(event);
-        });
         break;
       case RoutingState.handleStanzas:
         await _handleStanza(node);
@@ -805,8 +875,6 @@ class XmppConnection {
 
   /// Sends an event to the connection's event stream.
   Future<void> _sendEvent(XmppEvent event) async {
-    _log.finest('Event: ${event.toString()}');
-
     for (final manager in _xmppManagers.values) {
       await manager.onXmppEvent(event);
     }
@@ -827,7 +895,7 @@ class XmppConnection {
     await _reconnectionPolicy.setShouldReconnect(false);
 
     if (triggeredByUser) {
-      getPresenceManager()?.sendUnavailablePresence();
+      await getPresenceManager()?.sendUnavailablePresence();
     }
 
     _socket.prepareDisconnect();
@@ -845,22 +913,9 @@ class XmppConnection {
     }
   }
 
-  /// Make sure that all required managers are registered
-  void _runPreConnectionAssertions() {
-    assert(
-      _xmppManagers.containsKey(rosterManager),
-      'A RosterManager is mandatory',
-    );
-    assert(
-      _xmppManagers.containsKey(discoManager),
-      'A DiscoManager is mandatory',
-    );
-  }
-
   /// The private implementation for [XmppConnection.connect]. The parameters have
   /// the same meaning as with [XmppConnection.connect].
   Future<Result<bool, XmppError>> _connectImpl({
-    String? lastResource,
     bool waitForConnection = false,
     bool shouldReconnect = true,
     bool waitUntilLogin = false,
@@ -883,11 +938,9 @@ class XmppConnection {
       _connectionCompleter = Completer();
     }
 
-    if (lastResource != null) {
+    // Reset the resource. If we use stream resumption from XEP-0198, then the
-      setResource(lastResource, triggerEvent: false);
+    // manager will set it on successful resumption.
-    } else {
+    setResource('', triggerEvent: false);
-      setResource('', triggerEvent: false);
-    }
 
     // If requested, wait until we have a network connection
     if (waitForConnection) {
@@ -896,6 +949,9 @@ class XmppConnection {
       _log.info('Got okay from connectivityManager');
     }
 
+    // Reset the stream parser
+    _streamParser.reset();
+
     final smManager = getStreamManagementManager();
     var host = connectionSettings.host;
     var port = connectionSettings.port;
@@ -912,7 +968,7 @@ class XmppConnection {
       port: port,
     );
     if (!result) {
-      await handleError(NoConnectionError());
+      await handleError(NoConnectionPossibleError());
 
       return Result(NoConnectionPossibleError());
     } else {
@@ -934,9 +990,6 @@ class XmppConnection {
 
   /// Start the connection process using the provided connection settings.
   ///
-  /// If [lastResource] is set, then its value is used as the connection's resource.
-  /// Useful for stream resumption.
-  ///
   /// [shouldReconnect] indicates whether the reconnection attempts should be
   /// automatically performed after a fatal failure of any kind occurs.
   ///
@@ -951,16 +1004,12 @@ class XmppConnection {
   /// [enableReconnectOnSuccess] indicates that automatic reconnection is to be
   /// enabled once the connection has been successfully established.
   Future<Result<bool, XmppError>> connect({
-    String? lastResource,
     bool? shouldReconnect,
     bool waitForConnection = false,
     bool waitUntilLogin = false,
     bool enableReconnectOnSuccess = true,
   }) async {
-    _runPreConnectionAssertions();
-
     final result = _connectImpl(
-      lastResource: lastResource,
       shouldReconnect: shouldReconnect ?? !waitUntilLogin,
       waitForConnection: waitForConnection,
       waitUntilLogin: waitUntilLogin,

packages/moxxmpp/lib/src/errors.dart

@@ -7,13 +7,6 @@ abstract class XmppError {
   bool isRecoverable();
 }
 
-/// Returned if we could not establish a TCP connection
-/// to the server.
-class NoConnectionError extends XmppError {
-  @override
-  bool isRecoverable() => true;
-}
-
 /// Returned if a socket error occured
 class SocketError extends XmppError {
   SocketError(this.event);

packages/moxxmpp/lib/src/events.dart

@@ -4,28 +4,20 @@ import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/roster/roster.dart';
 import 'package:moxxmpp/src/stanza.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
 import 'package:moxxmpp/src/xeps/xep_0030/types.dart';
 import 'package:moxxmpp/src/xeps/xep_0060/xep_0060.dart';
-import 'package:moxxmpp/src/xeps/xep_0066.dart';
+import 'package:moxxmpp/src/xeps/xep_0084.dart';
-import 'package:moxxmpp/src/xeps/xep_0085.dart';
+import 'package:moxxmpp/src/xeps/xep_0333.dart';
-import 'package:moxxmpp/src/xeps/xep_0334.dart';
-import 'package:moxxmpp/src/xeps/xep_0359.dart';
-import 'package:moxxmpp/src/xeps/xep_0385.dart';
-import 'package:moxxmpp/src/xeps/xep_0424.dart';
-import 'package:moxxmpp/src/xeps/xep_0444.dart';
-import 'package:moxxmpp/src/xeps/xep_0446.dart';
-import 'package:moxxmpp/src/xeps/xep_0447.dart';
-import 'package:moxxmpp/src/xeps/xep_0461.dart';
 
 abstract class XmppEvent {}
 
 /// Triggered when the connection state of the XmppConnection has
 /// changed.
 class ConnectionStateChangedEvent extends XmppEvent {
-  ConnectionStateChangedEvent(this.state, this.before, this.resumed);
+  ConnectionStateChangedEvent(this.state, this.before);
   final XmppConnectionState before;
   final XmppConnectionState state;
-  final bool resumed;
 
   /// Indicates whether the connection state switched from a not connected state to a
   /// connected state.
@@ -75,58 +67,42 @@ class RosterUpdatedEvent extends XmppEvent {
 
 /// Triggered when a message is received
 class MessageEvent extends XmppEvent {
-  MessageEvent({
+  MessageEvent(
-    required this.body,
+    this.from,
-    required this.fromJid,
+    this.to,
-    required this.toJid,
+    this.encrypted,
-    required this.sid,
+    this.extensions, {
-    required this.stanzaId,
+    this.id,
-    required this.isCarbon,
-    required this.deliveryReceiptRequested,
-    required this.isMarkable,
-    required this.encrypted,
-    required this.other,
-    this.error,
     this.type,
-    this.oob,
+    this.error,
-    this.sfs,
+    this.encryptionError,
-    this.sims,
-    this.reply,
-    this.chatState,
-    this.fun,
-    this.funReplacement,
-    this.funCancellation,
-    this.messageRetraction,
-    this.messageCorrectionId,
-    this.messageReactions,
-    this.messageProcessingHints,
-    this.stickerPackId,
   });
-  final StanzaError? error;
+
-  final String body;
+  /// The from attribute of the message.
-  final JID fromJid;
+  final JID from;
-  final JID toJid;
+
-  final String sid;
+  /// The to attribute of the message.
+  final JID to;
+
+  /// The id attribute of the message.
+  final String? id;
+
+  /// The type attribute of the message.
   final String? type;
-  final StableStanzaId stanzaId;
+
-  final bool isCarbon;
+  final StanzaError? error;
-  final bool deliveryReceiptRequested;
+
-  final bool isMarkable;
+  /// Flag indicating whether the message was encrypted.
-  final OOBData? oob;
-  final StatelessFileSharingData? sfs;
-  final StatelessMediaSharingData? sims;
-  final ReplyData? reply;
-  final ChatState? chatState;
-  final FileMetadataData? fun;
-  final String? funReplacement;
-  final String? funCancellation;
   final bool encrypted;
-  final MessageRetractionData? messageRetraction;
+
-  final String? messageCorrectionId;
+  /// The error in case an encryption error occurred.
-  final MessageReactions? messageReactions;
+  final Object? encryptionError;
-  final List<MessageProcessingHint>? messageProcessingHints;
+
-  final String? stickerPackId;
+  /// Data added by other handlers.
-  final Map<String, dynamic> other;
+  final TypedMap<StanzaHandlerExtension> extensions;
+
+  /// Shorthand for extensions.get<T>().
+  T? get<T>() => extensions.get<T>();
 }
 
 /// Triggered when a client responds to our delivery receipt request
@@ -137,13 +113,19 @@ class DeliveryReceiptReceivedEvent extends XmppEvent {
 }
 
 class ChatMarkerEvent extends XmppEvent {
-  ChatMarkerEvent({
+  ChatMarkerEvent(
-    required this.type,
+    this.from,
-    required this.from,
+    this.type,
-    required this.id,
+    this.id,
-  });
+  );
+
+  /// The entity that sent the chat marker.
   final JID from;
-  final String type;
+
+  /// The type of chat marker that was sent.
+  final ChatMarker type;
+
+  /// The id of the message that the marker applies to.
   final String id;
 }
 
@@ -167,13 +149,6 @@ class ResourceBoundEvent extends XmppEvent {
   final String resource;
 }
 
-/// Triggered when we receive presence
-class PresenceReceivedEvent extends XmppEvent {
-  PresenceReceivedEvent(this.jid, this.presence);
-  final JID jid;
-  final Stanza presence;
-}
-
 /// Triggered when we are starting an connection attempt
 class ConnectingEvent extends XmppEvent {}
 
@@ -191,15 +166,31 @@ class SubscriptionRequestReceivedEvent extends XmppEvent {
   final JID from;
 }
 
-/// Triggered when we receive a new or updated avatar
+/// Triggered when we receive a new or updated avatar via XEP-0084
-class AvatarUpdatedEvent extends XmppEvent {
+class UserAvatarUpdatedEvent extends XmppEvent {
-  AvatarUpdatedEvent({
+  UserAvatarUpdatedEvent(
-    required this.jid,
+    this.jid,
-    required this.base64,
+    this.metadata,
-    required this.hash,
+  );
-  });
+
-  final String jid;
+  /// The JID of the user updating their avatar.
-  final String base64;
+  final JID jid;
+
+  /// The metadata of the avatar.
+  final List<UserAvatarMetadata> metadata;
+}
+
+/// Triggered when we receive a new or updated avatar via XEP-0054
+class VCardAvatarUpdatedEvent extends XmppEvent {
+  VCardAvatarUpdatedEvent(
+    this.jid,
+    this.hash,
+  );
+
+  /// The JID of the entity that updated their avatar.
+  final JID jid;
+
+  /// The SHA-1 hash of the avatar.
   final String hash;
 }
 
@@ -257,4 +248,10 @@ class NonRecoverableErrorEvent extends XmppEvent {
 }
 
 /// Triggered when the stream negotiations are done.
-class StreamNegotiationsDoneEvent extends XmppEvent {}
+class StreamNegotiationsDoneEvent extends XmppEvent {
+  StreamNegotiationsDoneEvent(this.resumed);
+
+  /// Flag indicating whether we resumed a previous stream (true) or are in a completely
+  /// new stream (false).
+  final bool resumed;
+}

packages/moxxmpp/lib/src/handlers/base.dart

@@ -1,9 +1,9 @@
 import 'package:logging/logging.dart';
 import 'package:meta/meta.dart';
-import 'package:moxxmpp/src/buffer.dart';
 import 'package:moxxmpp/src/errors.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
+import 'package:moxxmpp/src/parser.dart';
 import 'package:moxxmpp/src/settings.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 
@@ -22,6 +22,9 @@ typedef SendNonzaFunction = void Function(XMLNode);
 /// Returns the connection settings.
 typedef GetConnectionSettingsFunction = ConnectionSettings Function();
 
+/// Resets the stream parser's state.
+typedef ResetStreamParserFunction = void Function();
+
 /// This class implements the stream feature negotiation for XmppConnection.
 abstract class NegotiationsHandler {
   @protected
@@ -51,6 +54,9 @@ abstract class NegotiationsHandler {
   @protected
   late final GetConnectionSettingsFunction getConnectionSettings;
 
+  @protected
+  late final ResetStreamParserFunction resetStreamParser;
+
   /// The id included in the last stream header.
   @protected
   String? streamId;
@@ -72,15 +78,20 @@ abstract class NegotiationsHandler {
     IsAuthenticatedFunction isAuthenticated,
     SendNonzaFunction sendNonza,
     GetConnectionSettingsFunction getConnectionSettings,
+    ResetStreamParserFunction resetStreamParser,
   ) {
     this.onNegotiationsDone = onNegotiationsDone;
     this.handleError = handleError;
     this.isAuthenticated = isAuthenticated;
     this.sendNonza = sendNonza;
     this.getConnectionSettings = getConnectionSettings;
+    this.resetStreamParser = resetStreamParser;
     log = Logger(toString());
   }
 
+  /// Returns the xmlns attribute that stanzas should have.
+  String getStanzaNamespace();
+
   /// Registers the negotiator [negotiator] against this negotiations handler.
   void registerNegotiator(XmppFeatureNegotiatorBase negotiator);
 
@@ -113,8 +124,8 @@ abstract class NegotiationsHandler {
   }
 
   /// Called whenever the stream buffer outputs a new event [event].
-  Future<void> negotiate(XmlStreamBufferObject event) async {
+  Future<void> negotiate(XMPPStreamObject event) async {
-    if (event is XmlStreamBufferHeader) {
+    if (event is XMPPStreamHeader) {
       streamId = event.attributes['id'];
     }
   }

packages/moxxmpp/lib/src/handlers/client.dart

@@ -1,10 +1,10 @@
 import 'package:meta/meta.dart';
-import 'package:moxxmpp/src/buffer.dart';
 import 'package:moxxmpp/src/connection_errors.dart';
 import 'package:moxxmpp/src/handlers/base.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
+import 'package:moxxmpp/src/parser.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 
 /// "Nonza" describing the XMPP stream header of a client-to-server connection.
@@ -35,6 +35,9 @@ class ClientToServerNegotiator extends NegotiationsHandler {
   /// The currently active negotiator.
   XmppFeatureNegotiatorBase? _currentNegotiator;
 
+  @override
+  String getStanzaNamespace() => stanzaXmlns;
+
   @override
   void registerNegotiator(XmppFeatureNegotiatorBase negotiator) {
     negotiators[negotiator.id] = negotiator;
@@ -57,6 +60,7 @@ class ClientToServerNegotiator extends NegotiationsHandler {
 
   @override
   void sendStreamHeader() {
+    resetStreamParser();
     sendNonza(
       XMLNode(
         tag: 'xml',
@@ -208,8 +212,8 @@ class ClientToServerNegotiator extends NegotiationsHandler {
   }
 
   @override
-  Future<void> negotiate(XmlStreamBufferObject event) async {
+  Future<void> negotiate(XMPPStreamObject event) async {
-    if (event is XmlStreamBufferElement) {
+    if (event is XMPPStreamElement) {
       if (event.node.tag == 'stream:features') {
         // Store the received stream features
         _streamFeatures

packages/moxxmpp/lib/src/handlers/component.dart

@@ -1,12 +1,12 @@
 import 'dart:convert';
 import 'package:cryptography/cryptography.dart';
 import 'package:hex/hex.dart';
-import 'package:moxxmpp/src/buffer.dart';
 import 'package:moxxmpp/src/connection_errors.dart';
 import 'package:moxxmpp/src/handlers/base.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
+import 'package:moxxmpp/src/parser.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 
 /// Nonza describing the XMPP stream header.
@@ -41,11 +41,15 @@ class ComponentToServerNegotiator extends NegotiationsHandler {
   /// The state the negotiation handler is currently in
   ComponentToServerState _state = ComponentToServerState.idle;
 
+  @override
+  String getStanzaNamespace() => componentAcceptXmlns;
+
   @override
   void registerNegotiator(XmppFeatureNegotiatorBase negotiator) {}
 
   @override
   void sendStreamHeader() {
+    resetStreamParser();
     sendNonza(
       XMLNode(
         tag: 'xml',
@@ -67,10 +71,10 @@ class ComponentToServerNegotiator extends NegotiationsHandler {
   }
 
   @override
-  Future<void> negotiate(XmlStreamBufferObject event) async {
+  Future<void> negotiate(XMPPStreamObject event) async {
     switch (_state) {
       case ComponentToServerState.idle:
-        if (event is XmlStreamBufferHeader) {
+        if (event is XMPPStreamHeader) {
           streamId = event.attributes['id'];
           assert(
             streamId != null,
@@ -90,7 +94,7 @@ class ComponentToServerNegotiator extends NegotiationsHandler {
         }
         break;
       case ComponentToServerState.handshakeSent:
-        if (event is XmlStreamBufferElement) {
+        if (event is XMPPStreamElement) {
           if (event.node.tag == 'handshake' &&
               event.node.children.isEmpty &&
               event.node.attributes.isEmpty) {

packages/moxxmpp/lib/src/iq.dart

@@ -23,9 +23,11 @@ Future<void> handleUnhandledStanza(
     );
 
     await conn.sendStanza(
-      stanza,
+      StanzaDetails(
-      awaitable: false,
+        stanza,
-      forceEncryption: data.encrypted,
+        awaitable: false,
+        forceEncryption: data.encrypted,
+      ),
     );
   }
 }

packages/moxxmpp/lib/src/jid.dart

@@ -55,14 +55,17 @@ class JID {
 
   /// Converts the JID into a bare JID.
   JID toBare() {
-    if (isBare()) return this;
-
     return JID(local, domain, '');
   }
 
   /// Converts the JID into one with a resource part of [resource].
   JID withResource(String resource) => JID(local, domain, resource);
 
+  /// Convert the JID into the JID of the domain. For example, converts alice@example.org/abc123 to example.org.
+  JID toDomain() {
+    return JID('', domain, '');
+  }
+
   /// Compares the JID with [other]. This function assumes that JID and [other]
   /// are bare, i.e. only the domain- and localparts are compared. If [ensureBare]
   /// is optionally set to true, then [other] MUST be bare. Otherwise, false is returned.

packages/moxxmpp/lib/src/managers/attributes.dart

@@ -23,14 +23,7 @@ class XmppManagerAttributes {
   });
 
   /// Send a stanza whose response can be awaited.
-  final Future<XMLNode> Function(
+  final Future<XMLNode?> Function(StanzaDetails) sendStanza;
-    Stanza stanza, {
-    StanzaFromType addFrom,
-    bool addId,
-    bool awaitable,
-    bool encrypted,
-    bool forceEncryption,
-  }) sendStanza;
 
   /// Send a nonza.
   final void Function(XMLNode) sendNonza;

packages/moxxmpp/lib/src/managers/base.dart

@@ -5,6 +5,7 @@ import 'package:moxxmpp/src/managers/attributes.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/managers/handlers.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
+import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 import 'package:moxxmpp/src/xeps/xep_0030/errors.dart';
 import 'package:moxxmpp/src/xeps/xep_0030/types.dart';
@@ -45,8 +46,7 @@ abstract class XmppManagerBase {
     );
 
     final result = await dm!.discoInfoQuery(
-      _managerAttributes.getConnectionSettings().jid.domain,
+      _managerAttributes.getConnectionSettings().jid.toDomain(),
-      shouldEncrypt: false,
     );
     if (result.isType<DiscoError>()) {
       return false;
@@ -80,6 +80,9 @@ abstract class XmppManagerBase {
   /// handler's priority, the earlier it is run.
   List<NonzaHandler> getNonzaHandlers() => [];
 
+  /// Whenever the socket receives data, this method is called, if it is non-null.
+  Future<void> onData() async {}
+
   /// Return a list of features that should be included in a disco response.
   List<String> getDiscoFeatures() => [];
 
@@ -165,9 +168,11 @@ abstract class XmppManagerBase {
     );
 
     await getAttributes().sendStanza(
-      stanza,
+      StanzaDetails(
-      awaitable: false,
+        stanza,
-      forceEncryption: data.encrypted,
+        awaitable: false,
+        forceEncryption: data.encrypted,
+      ),
     );
   }
 }

packages/moxxmpp/lib/src/managers/data.dart

@@ -1,74 +1,59 @@
-import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:moxxmpp/src/stanza.dart';
-import 'package:moxxmpp/src/xeps/xep_0066.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
-import 'package:moxxmpp/src/xeps/xep_0085.dart';
-import 'package:moxxmpp/src/xeps/xep_0203.dart';
-import 'package:moxxmpp/src/xeps/xep_0359.dart';
-import 'package:moxxmpp/src/xeps/xep_0380.dart';
-import 'package:moxxmpp/src/xeps/xep_0385.dart';
-import 'package:moxxmpp/src/xeps/xep_0424.dart';
-import 'package:moxxmpp/src/xeps/xep_0444.dart';
-import 'package:moxxmpp/src/xeps/xep_0446.dart';
-import 'package:moxxmpp/src/xeps/xep_0447.dart';
-import 'package:moxxmpp/src/xeps/xep_0461.dart';
 
-part 'data.freezed.dart';
+abstract class StanzaHandlerExtension {}
 
-@freezed
+class StanzaHandlerData {
-class StanzaHandlerData with _$StanzaHandlerData {
+  StanzaHandlerData(
-  factory StanzaHandlerData(
+    this.done,
-    // Indicates to the runner that processing is now done. This means that all
+    this.cancel,
-    // pre-processing is done and no other handlers should be consulted.
+    this.stanza,
-    bool done,
+    this.extensions, {
-    // Indicates to the runner that processing is to be cancelled and no further handlers
+    this.cancelReason,
-    // should run. The stanza also will not be sent.
+    this.encryptionError,
-    bool cancel,
+    this.encrypted = false,
-    // The reason why we cancelled the processing and sending
+    this.forceEncryption = false,
-    dynamic cancelReason,
+    this.shouldEncrypt = true,
-    // The stanza that is being dealt with. SHOULD NOT be overwritten, unless it is absolutely
+    this.skip = false,
-    // necessary, e.g. with Message Carbons or OMEMO
+  });
-    Stanza stanza, {
+
-    // Whether the stanza is retransmitted. Only useful in the context of outgoing
+  /// Indicates to the runner that processing is now done. This means that all
-    // stanza handlers. MUST NOT be overwritten.
+  /// pre-processing is done and no other handlers should be consulted.
-    @Default(false) bool retransmitted,
+  bool done;
-    StatelessMediaSharingData? sims,
+
-    StatelessFileSharingData? sfs,
+  /// Only useful in combination with [done] = true: When [skip] is set to true and
-    OOBData? oob,
+  /// this [StanzaHandlerData] object is returned from a IncomingPreStanzaHandler, then
-    StableStanzaId? stableId,
+  /// moxxmpp will skip checking whether the stanza was awaited and will not run any actual
-    ReplyData? reply,
+  /// IncomingStanzaHandler callbacks.
-    ChatState? chatState,
+  bool skip;
-    @Default(false) bool isCarbon,
+
-    @Default(false) bool deliveryReceiptRequested,
+  /// Indicates to the runner that processing is to be cancelled and no further handlers
-    @Default(false) bool isMarkable,
+  /// should run. The stanza also will not be sent.
-    // File Upload Notifications
+  bool cancel;
-    // A notification
+
-    FileMetadataData? fun,
+  /// The reason why we cancelled the processing and sending.
-    // The stanza id this replaces
+  Object? cancelReason;
-    String? funReplacement,
+
-    // The stanza id this cancels
+  /// The reason why an encryption or decryption failed.
-    String? funCancellation,
+  Object? encryptionError;
-    // Whether the stanza was received encrypted
+
-    @Default(false) bool encrypted,
+  /// The stanza that is being dealt with. SHOULD NOT be overwritten, unless it is
-    // If true, forces the encryption manager to encrypt to the JID, even if it
+  /// absolutely necessary, e.g. with Message Carbons or OMEMO.
-    // would not normally. In the case of OMEMO: If shouldEncrypt returns false
+  Stanza stanza;
-    // but forceEncryption is true, then the OMEMO manager will try to encrypt
+
-    // to the JID anyway.
+  /// Whether the stanza is already encrypted
-    @Default(false) bool forceEncryption,
+  bool encrypted;
-    // The stated type of encryption used, if any was used
+
-    ExplicitEncryptionType? encryptionType,
+  // If true, forces the encryption manager to encrypt to the JID, even if it
-    // Delayed Delivery
+  // would not normally. In the case of OMEMO: If shouldEncrypt returns false
-    DelayedDelivery? delayedDelivery,
+  // but forceEncryption is true, then the OMEMO manager will try to encrypt
-    // This is for stanza handlers that are not part of the XMPP library but still need
+  // to the JID anyway.
-    // pass data around.
+  bool forceEncryption;
-    @Default(<String, dynamic>{}) Map<String, dynamic> other,
+
-    // If non-null, then it indicates the origin Id of the message that should be
+  /// Flag indicating whether a E2EE implementation should encrypt the stanza (true)
-    // retracted
+  /// or not (false).
-    MessageRetractionData? messageRetraction,
+  bool shouldEncrypt;
-    // If non-null, then the message is a correction for the specified stanza Id
+
-    String? lastMessageCorrectionSid,
+  /// Additional data from other managers.
-    // Reactions data
+  final TypedMap<StanzaHandlerExtension> extensions;
-    MessageReactions? messageReactions,
-    // The Id of the sticker pack this sticker belongs to
-    String? stickerPackId,
-  }) = _StanzaHandlerData;
 }

packages/moxxmpp/lib/src/managers/data.freezed.dart

@@ -1,747 +0,0 @@
-// coverage:ignore-file
-// GENERATED CODE - DO NOT MODIFY BY HAND
-// ignore_for_file: type=lint
-// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target
-
-part of 'data.dart';
-
-// **************************************************************************
-// FreezedGenerator
-// **************************************************************************
-
-T _$identity<T>(T value) => value;
-
-final _privateConstructorUsedError = UnsupportedError(
-    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#custom-getters-and-methods');
-
-/// @nodoc
-mixin _$StanzaHandlerData {
-// Indicates to the runner that processing is now done. This means that all
-// pre-processing is done and no other handlers should be consulted.
-  bool get done =>
-      throw _privateConstructorUsedError; // Indicates to the runner that processing is to be cancelled and no further handlers
-// should run. The stanza also will not be sent.
-  bool get cancel =>
-      throw _privateConstructorUsedError; // The reason why we cancelled the processing and sending
-  dynamic get cancelReason =>
-      throw _privateConstructorUsedError; // The stanza that is being dealt with. SHOULD NOT be overwritten, unless it is absolutely
-// necessary, e.g. with Message Carbons or OMEMO
-  Stanza get stanza =>
-      throw _privateConstructorUsedError; // Whether the stanza is retransmitted. Only useful in the context of outgoing
-// stanza handlers. MUST NOT be overwritten.
-  bool get retransmitted => throw _privateConstructorUsedError;
-  StatelessMediaSharingData? get sims => throw _privateConstructorUsedError;
-  StatelessFileSharingData? get sfs => throw _privateConstructorUsedError;
-  OOBData? get oob => throw _privateConstructorUsedError;
-  StableStanzaId? get stableId => throw _privateConstructorUsedError;
-  ReplyData? get reply => throw _privateConstructorUsedError;
-  ChatState? get chatState => throw _privateConstructorUsedError;
-  bool get isCarbon => throw _privateConstructorUsedError;
-  bool get deliveryReceiptRequested => throw _privateConstructorUsedError;
-  bool get isMarkable =>
-      throw _privateConstructorUsedError; // File Upload Notifications
-// A notification
-  FileMetadataData? get fun =>
-      throw _privateConstructorUsedError; // The stanza id this replaces
-  String? get funReplacement =>
-      throw _privateConstructorUsedError; // The stanza id this cancels
-  String? get funCancellation =>
-      throw _privateConstructorUsedError; // Whether the stanza was received encrypted
-  bool get encrypted =>
-      throw _privateConstructorUsedError; // If true, forces the encryption manager to encrypt to the JID, even if it
-// would not normally. In the case of OMEMO: If shouldEncrypt returns false
-// but forceEncryption is true, then the OMEMO manager will try to encrypt
-// to the JID anyway.
-  bool get forceEncryption =>
-      throw _privateConstructorUsedError; // The stated type of encryption used, if any was used
-  ExplicitEncryptionType? get encryptionType =>
-      throw _privateConstructorUsedError; // Delayed Delivery
-  DelayedDelivery? get delayedDelivery =>
-      throw _privateConstructorUsedError; // This is for stanza handlers that are not part of the XMPP library but still need
-// pass data around.
-  Map<String, dynamic> get other =>
-      throw _privateConstructorUsedError; // If non-null, then it indicates the origin Id of the message that should be
-// retracted
-  MessageRetractionData? get messageRetraction =>
-      throw _privateConstructorUsedError; // If non-null, then the message is a correction for the specified stanza Id
-  String? get lastMessageCorrectionSid =>
-      throw _privateConstructorUsedError; // Reactions data
-  MessageReactions? get messageReactions =>
-      throw _privateConstructorUsedError; // The Id of the sticker pack this sticker belongs to
-  String? get stickerPackId => throw _privateConstructorUsedError;
-
-  @JsonKey(ignore: true)
-  $StanzaHandlerDataCopyWith<StanzaHandlerData> get copyWith =>
-      throw _privateConstructorUsedError;
-}
-
-/// @nodoc
-abstract class $StanzaHandlerDataCopyWith<$Res> {
-  factory $StanzaHandlerDataCopyWith(
-          StanzaHandlerData value, $Res Function(StanzaHandlerData) then) =
-      _$StanzaHandlerDataCopyWithImpl<$Res>;
-  $Res call(
-      {bool done,
-      bool cancel,
-      dynamic cancelReason,
-      Stanza stanza,
-      bool retransmitted,
-      StatelessMediaSharingData? sims,
-      StatelessFileSharingData? sfs,
-      OOBData? oob,
-      StableStanzaId? stableId,
-      ReplyData? reply,
-      ChatState? chatState,
-      bool isCarbon,
-      bool deliveryReceiptRequested,
-      bool isMarkable,
-      FileMetadataData? fun,
-      String? funReplacement,
-      String? funCancellation,
-      bool encrypted,
-      bool forceEncryption,
-      ExplicitEncryptionType? encryptionType,
-      DelayedDelivery? delayedDelivery,
-      Map<String, dynamic> other,
-      MessageRetractionData? messageRetraction,
-      String? lastMessageCorrectionSid,
-      MessageReactions? messageReactions,
-      String? stickerPackId});
-}
-
-/// @nodoc
-class _$StanzaHandlerDataCopyWithImpl<$Res>
-    implements $StanzaHandlerDataCopyWith<$Res> {
-  _$StanzaHandlerDataCopyWithImpl(this._value, this._then);
-
-  final StanzaHandlerData _value;
-  // ignore: unused_field
-  final $Res Function(StanzaHandlerData) _then;
-
-  @override
-  $Res call({
-    Object? done = freezed,
-    Object? cancel = freezed,
-    Object? cancelReason = freezed,
-    Object? stanza = freezed,
-    Object? retransmitted = freezed,
-    Object? sims = freezed,
-    Object? sfs = freezed,
-    Object? oob = freezed,
-    Object? stableId = freezed,
-    Object? reply = freezed,
-    Object? chatState = freezed,
-    Object? isCarbon = freezed,
-    Object? deliveryReceiptRequested = freezed,
-    Object? isMarkable = freezed,
-    Object? fun = freezed,
-    Object? funReplacement = freezed,
-    Object? funCancellation = freezed,
-    Object? encrypted = freezed,
-    Object? forceEncryption = freezed,
-    Object? encryptionType = freezed,
-    Object? delayedDelivery = freezed,
-    Object? other = freezed,
-    Object? messageRetraction = freezed,
-    Object? lastMessageCorrectionSid = freezed,
-    Object? messageReactions = freezed,
-    Object? stickerPackId = freezed,
-  }) {
-    return _then(_value.copyWith(
-      done: done == freezed
-          ? _value.done
-          : done // ignore: cast_nullable_to_non_nullable
-              as bool,
-      cancel: cancel == freezed
-          ? _value.cancel
-          : cancel // ignore: cast_nullable_to_non_nullable
-              as bool,
-      cancelReason: cancelReason == freezed
-          ? _value.cancelReason
-          : cancelReason // ignore: cast_nullable_to_non_nullable
-              as dynamic,
-      stanza: stanza == freezed
-          ? _value.stanza
-          : stanza // ignore: cast_nullable_to_non_nullable
-              as Stanza,
-      retransmitted: retransmitted == freezed
-          ? _value.retransmitted
-          : retransmitted // ignore: cast_nullable_to_non_nullable
-              as bool,
-      sims: sims == freezed
-          ? _value.sims
-          : sims // ignore: cast_nullable_to_non_nullable
-              as StatelessMediaSharingData?,
-      sfs: sfs == freezed
-          ? _value.sfs
-          : sfs // ignore: cast_nullable_to_non_nullable
-              as StatelessFileSharingData?,
-      oob: oob == freezed
-          ? _value.oob
-          : oob // ignore: cast_nullable_to_non_nullable
-              as OOBData?,
-      stableId: stableId == freezed
-          ? _value.stableId
-          : stableId // ignore: cast_nullable_to_non_nullable
-              as StableStanzaId?,
-      reply: reply == freezed
-          ? _value.reply
-          : reply // ignore: cast_nullable_to_non_nullable
-              as ReplyData?,
-      chatState: chatState == freezed
-          ? _value.chatState
-          : chatState // ignore: cast_nullable_to_non_nullable
-              as ChatState?,
-      isCarbon: isCarbon == freezed
-          ? _value.isCarbon
-          : isCarbon // ignore: cast_nullable_to_non_nullable
-              as bool,
-      deliveryReceiptRequested: deliveryReceiptRequested == freezed
-          ? _value.deliveryReceiptRequested
-          : deliveryReceiptRequested // ignore: cast_nullable_to_non_nullable
-              as bool,
-      isMarkable: isMarkable == freezed
-          ? _value.isMarkable
-          : isMarkable // ignore: cast_nullable_to_non_nullable
-              as bool,
-      fun: fun == freezed
-          ? _value.fun
-          : fun // ignore: cast_nullable_to_non_nullable
-              as FileMetadataData?,
-      funReplacement: funReplacement == freezed
-          ? _value.funReplacement
-          : funReplacement // ignore: cast_nullable_to_non_nullable
-              as String?,
-      funCancellation: funCancellation == freezed
-          ? _value.funCancellation
-          : funCancellation // ignore: cast_nullable_to_non_nullable
-              as String?,
-      encrypted: encrypted == freezed
-          ? _value.encrypted
-          : encrypted // ignore: cast_nullable_to_non_nullable
-              as bool,
-      forceEncryption: forceEncryption == freezed
-          ? _value.forceEncryption
-          : forceEncryption // ignore: cast_nullable_to_non_nullable
-              as bool,
-      encryptionType: encryptionType == freezed
-          ? _value.encryptionType
-          : encryptionType // ignore: cast_nullable_to_non_nullable
-              as ExplicitEncryptionType?,
-      delayedDelivery: delayedDelivery == freezed
-          ? _value.delayedDelivery
-          : delayedDelivery // ignore: cast_nullable_to_non_nullable
-              as DelayedDelivery?,
-      other: other == freezed
-          ? _value.other
-          : other // ignore: cast_nullable_to_non_nullable
-              as Map<String, dynamic>,
-      messageRetraction: messageRetraction == freezed
-          ? _value.messageRetraction
-          : messageRetraction // ignore: cast_nullable_to_non_nullable
-              as MessageRetractionData?,
-      lastMessageCorrectionSid: lastMessageCorrectionSid == freezed
-          ? _value.lastMessageCorrectionSid
-          : lastMessageCorrectionSid // ignore: cast_nullable_to_non_nullable
-              as String?,
-      messageReactions: messageReactions == freezed
-          ? _value.messageReactions
-          : messageReactions // ignore: cast_nullable_to_non_nullable
-              as MessageReactions?,
-      stickerPackId: stickerPackId == freezed
-          ? _value.stickerPackId
-          : stickerPackId // ignore: cast_nullable_to_non_nullable
-              as String?,
-    ));
-  }
-}
-
-/// @nodoc
-abstract class _$$_StanzaHandlerDataCopyWith<$Res>
-    implements $StanzaHandlerDataCopyWith<$Res> {
-  factory _$$_StanzaHandlerDataCopyWith(_$_StanzaHandlerData value,
-          $Res Function(_$_StanzaHandlerData) then) =
-      __$$_StanzaHandlerDataCopyWithImpl<$Res>;
-  @override
-  $Res call(
-      {bool done,
-      bool cancel,
-      dynamic cancelReason,
-      Stanza stanza,
-      bool retransmitted,
-      StatelessMediaSharingData? sims,
-      StatelessFileSharingData? sfs,
-      OOBData? oob,
-      StableStanzaId? stableId,
-      ReplyData? reply,
-      ChatState? chatState,
-      bool isCarbon,
-      bool deliveryReceiptRequested,
-      bool isMarkable,
-      FileMetadataData? fun,
-      String? funReplacement,
-      String? funCancellation,
-      bool encrypted,
-      bool forceEncryption,
-      ExplicitEncryptionType? encryptionType,
-      DelayedDelivery? delayedDelivery,
-      Map<String, dynamic> other,
-      MessageRetractionData? messageRetraction,
-      String? lastMessageCorrectionSid,
-      MessageReactions? messageReactions,
-      String? stickerPackId});
-}
-
-/// @nodoc
-class __$$_StanzaHandlerDataCopyWithImpl<$Res>
-    extends _$StanzaHandlerDataCopyWithImpl<$Res>
-    implements _$$_StanzaHandlerDataCopyWith<$Res> {
-  __$$_StanzaHandlerDataCopyWithImpl(
-      _$_StanzaHandlerData _value, $Res Function(_$_StanzaHandlerData) _then)
-      : super(_value, (v) => _then(v as _$_StanzaHandlerData));
-
-  @override
-  _$_StanzaHandlerData get _value => super._value as _$_StanzaHandlerData;
-
-  @override
-  $Res call({
-    Object? done = freezed,
-    Object? cancel = freezed,
-    Object? cancelReason = freezed,
-    Object? stanza = freezed,
-    Object? retransmitted = freezed,
-    Object? sims = freezed,
-    Object? sfs = freezed,
-    Object? oob = freezed,
-    Object? stableId = freezed,
-    Object? reply = freezed,
-    Object? chatState = freezed,
-    Object? isCarbon = freezed,
-    Object? deliveryReceiptRequested = freezed,
-    Object? isMarkable = freezed,
-    Object? fun = freezed,
-    Object? funReplacement = freezed,
-    Object? funCancellation = freezed,
-    Object? encrypted = freezed,
-    Object? forceEncryption = freezed,
-    Object? encryptionType = freezed,
-    Object? delayedDelivery = freezed,
-    Object? other = freezed,
-    Object? messageRetraction = freezed,
-    Object? lastMessageCorrectionSid = freezed,
-    Object? messageReactions = freezed,
-    Object? stickerPackId = freezed,
-  }) {
-    return _then(_$_StanzaHandlerData(
-      done == freezed
-          ? _value.done
-          : done // ignore: cast_nullable_to_non_nullable
-              as bool,
-      cancel == freezed
-          ? _value.cancel
-          : cancel // ignore: cast_nullable_to_non_nullable
-              as bool,
-      cancelReason == freezed
-          ? _value.cancelReason
-          : cancelReason // ignore: cast_nullable_to_non_nullable
-              as dynamic,
-      stanza == freezed
-          ? _value.stanza
-          : stanza // ignore: cast_nullable_to_non_nullable
-              as Stanza,
-      retransmitted: retransmitted == freezed
-          ? _value.retransmitted
-          : retransmitted // ignore: cast_nullable_to_non_nullable
-              as bool,
-      sims: sims == freezed
-          ? _value.sims
-          : sims // ignore: cast_nullable_to_non_nullable
-              as StatelessMediaSharingData?,
-      sfs: sfs == freezed
-          ? _value.sfs
-          : sfs // ignore: cast_nullable_to_non_nullable
-              as StatelessFileSharingData?,
-      oob: oob == freezed
-          ? _value.oob
-          : oob // ignore: cast_nullable_to_non_nullable
-              as OOBData?,
-      stableId: stableId == freezed
-          ? _value.stableId
-          : stableId // ignore: cast_nullable_to_non_nullable
-              as StableStanzaId?,
-      reply: reply == freezed
-          ? _value.reply
-          : reply // ignore: cast_nullable_to_non_nullable
-              as ReplyData?,
-      chatState: chatState == freezed
-          ? _value.chatState
-          : chatState // ignore: cast_nullable_to_non_nullable
-              as ChatState?,
-      isCarbon: isCarbon == freezed
-          ? _value.isCarbon
-          : isCarbon // ignore: cast_nullable_to_non_nullable
-              as bool,
-      deliveryReceiptRequested: deliveryReceiptRequested == freezed
-          ? _value.deliveryReceiptRequested
-          : deliveryReceiptRequested // ignore: cast_nullable_to_non_nullable
-              as bool,
-      isMarkable: isMarkable == freezed
-          ? _value.isMarkable
-          : isMarkable // ignore: cast_nullable_to_non_nullable
-              as bool,
-      fun: fun == freezed
-          ? _value.fun
-          : fun // ignore: cast_nullable_to_non_nullable
-              as FileMetadataData?,
-      funReplacement: funReplacement == freezed
-          ? _value.funReplacement
-          : funReplacement // ignore: cast_nullable_to_non_nullable
-              as String?,
-      funCancellation: funCancellation == freezed
-          ? _value.funCancellation
-          : funCancellation // ignore: cast_nullable_to_non_nullable
-              as String?,
-      encrypted: encrypted == freezed
-          ? _value.encrypted
-          : encrypted // ignore: cast_nullable_to_non_nullable
-              as bool,
-      forceEncryption: forceEncryption == freezed
-          ? _value.forceEncryption
-          : forceEncryption // ignore: cast_nullable_to_non_nullable
-              as bool,
-      encryptionType: encryptionType == freezed
-          ? _value.encryptionType
-          : encryptionType // ignore: cast_nullable_to_non_nullable
-              as ExplicitEncryptionType?,
-      delayedDelivery: delayedDelivery == freezed
-          ? _value.delayedDelivery
-          : delayedDelivery // ignore: cast_nullable_to_non_nullable
-              as DelayedDelivery?,
-      other: other == freezed
-          ? _value._other
-          : other // ignore: cast_nullable_to_non_nullable
-              as Map<String, dynamic>,
-      messageRetraction: messageRetraction == freezed
-          ? _value.messageRetraction
-          : messageRetraction // ignore: cast_nullable_to_non_nullable
-              as MessageRetractionData?,
-      lastMessageCorrectionSid: lastMessageCorrectionSid == freezed
-          ? _value.lastMessageCorrectionSid
-          : lastMessageCorrectionSid // ignore: cast_nullable_to_non_nullable
-              as String?,
-      messageReactions: messageReactions == freezed
-          ? _value.messageReactions
-          : messageReactions // ignore: cast_nullable_to_non_nullable
-              as MessageReactions?,
-      stickerPackId: stickerPackId == freezed
-          ? _value.stickerPackId
-          : stickerPackId // ignore: cast_nullable_to_non_nullable
-              as String?,
-    ));
-  }
-}
-
-/// @nodoc
-
-class _$_StanzaHandlerData implements _StanzaHandlerData {
-  _$_StanzaHandlerData(this.done, this.cancel, this.cancelReason, this.stanza,
-      {this.retransmitted = false,
-      this.sims,
-      this.sfs,
-      this.oob,
-      this.stableId,
-      this.reply,
-      this.chatState,
-      this.isCarbon = false,
-      this.deliveryReceiptRequested = false,
-      this.isMarkable = false,
-      this.fun,
-      this.funReplacement,
-      this.funCancellation,
-      this.encrypted = false,
-      this.forceEncryption = false,
-      this.encryptionType,
-      this.delayedDelivery,
-      final Map<String, dynamic> other = const <String, dynamic>{},
-      this.messageRetraction,
-      this.lastMessageCorrectionSid,
-      this.messageReactions,
-      this.stickerPackId})
-      : _other = other;
-
-// Indicates to the runner that processing is now done. This means that all
-// pre-processing is done and no other handlers should be consulted.
-  @override
-  final bool done;
-// Indicates to the runner that processing is to be cancelled and no further handlers
-// should run. The stanza also will not be sent.
-  @override
-  final bool cancel;
-// The reason why we cancelled the processing and sending
-  @override
-  final dynamic cancelReason;
-// The stanza that is being dealt with. SHOULD NOT be overwritten, unless it is absolutely
-// necessary, e.g. with Message Carbons or OMEMO
-  @override
-  final Stanza stanza;
-// Whether the stanza is retransmitted. Only useful in the context of outgoing
-// stanza handlers. MUST NOT be overwritten.
-  @override
-  @JsonKey()
-  final bool retransmitted;
-  @override
-  final StatelessMediaSharingData? sims;
-  @override
-  final StatelessFileSharingData? sfs;
-  @override
-  final OOBData? oob;
-  @override
-  final StableStanzaId? stableId;
-  @override
-  final ReplyData? reply;
-  @override
-  final ChatState? chatState;
-  @override
-  @JsonKey()
-  final bool isCarbon;
-  @override
-  @JsonKey()
-  final bool deliveryReceiptRequested;
-  @override
-  @JsonKey()
-  final bool isMarkable;
-// File Upload Notifications
-// A notification
-  @override
-  final FileMetadataData? fun;
-// The stanza id this replaces
-  @override
-  final String? funReplacement;
-// The stanza id this cancels
-  @override
-  final String? funCancellation;
-// Whether the stanza was received encrypted
-  @override
-  @JsonKey()
-  final bool encrypted;
-// If true, forces the encryption manager to encrypt to the JID, even if it
-// would not normally. In the case of OMEMO: If shouldEncrypt returns false
-// but forceEncryption is true, then the OMEMO manager will try to encrypt
-// to the JID anyway.
-  @override
-  @JsonKey()
-  final bool forceEncryption;
-// The stated type of encryption used, if any was used
-  @override
-  final ExplicitEncryptionType? encryptionType;
-// Delayed Delivery
-  @override
-  final DelayedDelivery? delayedDelivery;
-// This is for stanza handlers that are not part of the XMPP library but still need
-// pass data around.
-  final Map<String, dynamic> _other;
-// This is for stanza handlers that are not part of the XMPP library but still need
-// pass data around.
-  @override
-  @JsonKey()
-  Map<String, dynamic> get other {
-    // ignore: implicit_dynamic_type
-    return EqualUnmodifiableMapView(_other);
-  }
-
-// If non-null, then it indicates the origin Id of the message that should be
-// retracted
-  @override
-  final MessageRetractionData? messageRetraction;
-// If non-null, then the message is a correction for the specified stanza Id
-  @override
-  final String? lastMessageCorrectionSid;
-// Reactions data
-  @override
-  final MessageReactions? messageReactions;
-// The Id of the sticker pack this sticker belongs to
-  @override
-  final String? stickerPackId;
-
-  @override
-  String toString() {
-    return 'StanzaHandlerData(done: $done, cancel: $cancel, cancelReason: $cancelReason, stanza: $stanza, retransmitted: $retransmitted, sims: $sims, sfs: $sfs, oob: $oob, stableId: $stableId, reply: $reply, chatState: $chatState, isCarbon: $isCarbon, deliveryReceiptRequested: $deliveryReceiptRequested, isMarkable: $isMarkable, fun: $fun, funReplacement: $funReplacement, funCancellation: $funCancellation, encrypted: $encrypted, forceEncryption: $forceEncryption, encryptionType: $encryptionType, delayedDelivery: $delayedDelivery, other: $other, messageRetraction: $messageRetraction, lastMessageCorrectionSid: $lastMessageCorrectionSid, messageReactions: $messageReactions, stickerPackId: $stickerPackId)';
-  }
-
-  @override
-  bool operator ==(dynamic other) {
-    return identical(this, other) ||
-        (other.runtimeType == runtimeType &&
-            other is _$_StanzaHandlerData &&
-            const DeepCollectionEquality().equals(other.done, done) &&
-            const DeepCollectionEquality().equals(other.cancel, cancel) &&
-            const DeepCollectionEquality()
-                .equals(other.cancelReason, cancelReason) &&
-            const DeepCollectionEquality().equals(other.stanza, stanza) &&
-            const DeepCollectionEquality()
-                .equals(other.retransmitted, retransmitted) &&
-            const DeepCollectionEquality().equals(other.sims, sims) &&
-            const DeepCollectionEquality().equals(other.sfs, sfs) &&
-            const DeepCollectionEquality().equals(other.oob, oob) &&
-            const DeepCollectionEquality().equals(other.stableId, stableId) &&
-            const DeepCollectionEquality().equals(other.reply, reply) &&
-            const DeepCollectionEquality().equals(other.chatState, chatState) &&
-            const DeepCollectionEquality().equals(other.isCarbon, isCarbon) &&
-            const DeepCollectionEquality().equals(
-                other.deliveryReceiptRequested, deliveryReceiptRequested) &&
-            const DeepCollectionEquality()
-                .equals(other.isMarkable, isMarkable) &&
-            const DeepCollectionEquality().equals(other.fun, fun) &&
-            const DeepCollectionEquality()
-                .equals(other.funReplacement, funReplacement) &&
-            const DeepCollectionEquality()
-                .equals(other.funCancellation, funCancellation) &&
-            const DeepCollectionEquality().equals(other.encrypted, encrypted) &&
-            const DeepCollectionEquality()
-                .equals(other.forceEncryption, forceEncryption) &&
-            const DeepCollectionEquality()
-                .equals(other.encryptionType, encryptionType) &&
-            const DeepCollectionEquality()
-                .equals(other.delayedDelivery, delayedDelivery) &&
-            const DeepCollectionEquality().equals(other._other, this._other) &&
-            const DeepCollectionEquality()
-                .equals(other.messageRetraction, messageRetraction) &&
-            const DeepCollectionEquality().equals(
-                other.lastMessageCorrectionSid, lastMessageCorrectionSid) &&
-            const DeepCollectionEquality()
-                .equals(other.messageReactions, messageReactions) &&
-            const DeepCollectionEquality()
-                .equals(other.stickerPackId, stickerPackId));
-  }
-
-  @override
-  int get hashCode => Object.hashAll([
-        runtimeType,
-        const DeepCollectionEquality().hash(done),
-        const DeepCollectionEquality().hash(cancel),
-        const DeepCollectionEquality().hash(cancelReason),
-        const DeepCollectionEquality().hash(stanza),
-        const DeepCollectionEquality().hash(retransmitted),
-        const DeepCollectionEquality().hash(sims),
-        const DeepCollectionEquality().hash(sfs),
-        const DeepCollectionEquality().hash(oob),
-        const DeepCollectionEquality().hash(stableId),
-        const DeepCollectionEquality().hash(reply),
-        const DeepCollectionEquality().hash(chatState),
-        const DeepCollectionEquality().hash(isCarbon),
-        const DeepCollectionEquality().hash(deliveryReceiptRequested),
-        const DeepCollectionEquality().hash(isMarkable),
-        const DeepCollectionEquality().hash(fun),
-        const DeepCollectionEquality().hash(funReplacement),
-        const DeepCollectionEquality().hash(funCancellation),
-        const DeepCollectionEquality().hash(encrypted),
-        const DeepCollectionEquality().hash(forceEncryption),
-        const DeepCollectionEquality().hash(encryptionType),
-        const DeepCollectionEquality().hash(delayedDelivery),
-        const DeepCollectionEquality().hash(_other),
-        const DeepCollectionEquality().hash(messageRetraction),
-        const DeepCollectionEquality().hash(lastMessageCorrectionSid),
-        const DeepCollectionEquality().hash(messageReactions),
-        const DeepCollectionEquality().hash(stickerPackId)
-      ]);
-
-  @JsonKey(ignore: true)
-  @override
-  _$$_StanzaHandlerDataCopyWith<_$_StanzaHandlerData> get copyWith =>
-      __$$_StanzaHandlerDataCopyWithImpl<_$_StanzaHandlerData>(
-          this, _$identity);
-}
-
-abstract class _StanzaHandlerData implements StanzaHandlerData {
-  factory _StanzaHandlerData(final bool done, final bool cancel,
-      final dynamic cancelReason, final Stanza stanza,
-      {final bool retransmitted,
-      final StatelessMediaSharingData? sims,
-      final StatelessFileSharingData? sfs,
-      final OOBData? oob,
-      final StableStanzaId? stableId,
-      final ReplyData? reply,
-      final ChatState? chatState,
-      final bool isCarbon,
-      final bool deliveryReceiptRequested,
-      final bool isMarkable,
-      final FileMetadataData? fun,
-      final String? funReplacement,
-      final String? funCancellation,
-      final bool encrypted,
-      final bool forceEncryption,
-      final ExplicitEncryptionType? encryptionType,
-      final DelayedDelivery? delayedDelivery,
-      final Map<String, dynamic> other,
-      final MessageRetractionData? messageRetraction,
-      final String? lastMessageCorrectionSid,
-      final MessageReactions? messageReactions,
-      final String? stickerPackId}) = _$_StanzaHandlerData;
-
-  @override // Indicates to the runner that processing is now done. This means that all
-// pre-processing is done and no other handlers should be consulted.
-  bool get done;
-  @override // Indicates to the runner that processing is to be cancelled and no further handlers
-// should run. The stanza also will not be sent.
-  bool get cancel;
-  @override // The reason why we cancelled the processing and sending
-  dynamic get cancelReason;
-  @override // The stanza that is being dealt with. SHOULD NOT be overwritten, unless it is absolutely
-// necessary, e.g. with Message Carbons or OMEMO
-  Stanza get stanza;
-  @override // Whether the stanza is retransmitted. Only useful in the context of outgoing
-// stanza handlers. MUST NOT be overwritten.
-  bool get retransmitted;
-  @override
-  StatelessMediaSharingData? get sims;
-  @override
-  StatelessFileSharingData? get sfs;
-  @override
-  OOBData? get oob;
-  @override
-  StableStanzaId? get stableId;
-  @override
-  ReplyData? get reply;
-  @override
-  ChatState? get chatState;
-  @override
-  bool get isCarbon;
-  @override
-  bool get deliveryReceiptRequested;
-  @override
-  bool get isMarkable;
-  @override // File Upload Notifications
-// A notification
-  FileMetadataData? get fun;
-  @override // The stanza id this replaces
-  String? get funReplacement;
-  @override // The stanza id this cancels
-  String? get funCancellation;
-  @override // Whether the stanza was received encrypted
-  bool get encrypted;
-  @override // If true, forces the encryption manager to encrypt to the JID, even if it
-// would not normally. In the case of OMEMO: If shouldEncrypt returns false
-// but forceEncryption is true, then the OMEMO manager will try to encrypt
-// to the JID anyway.
-  bool get forceEncryption;
-  @override // The stated type of encryption used, if any was used
-  ExplicitEncryptionType? get encryptionType;
-  @override // Delayed Delivery
-  DelayedDelivery? get delayedDelivery;
-  @override // This is for stanza handlers that are not part of the XMPP library but still need
-// pass data around.
-  Map<String, dynamic> get other;
-  @override // If non-null, then it indicates the origin Id of the message that should be
-// retracted
-  MessageRetractionData? get messageRetraction;
-  @override // If non-null, then the message is a correction for the specified stanza Id
-  String? get lastMessageCorrectionSid;
-  @override // Reactions data
-  MessageReactions? get messageReactions;
-  @override // The Id of the sticker pack this sticker belongs to
-  String? get stickerPackId;
-  @override
-  @JsonKey(ignore: true)
-  _$$_StanzaHandlerDataCopyWith<_$_StanzaHandlerData> get copyWith =>
-      throw _privateConstructorUsedError;
-}

packages/moxxmpp/lib/src/managers/handlers.dart

@@ -1,89 +1,109 @@
-import 'package:moxlib/moxlib.dart';
+import 'package:collection/collection.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 
+/// A Handler is responsible for matching any kind of toplevel item in the XML stream
+/// (stanzas and Nonzas). For that, its [matches] method is called. What happens
+/// next depends on the subclass.
+// ignore: one_member_abstracts
 abstract class Handler {
-  const Handler(this.matchStanzas, {this.nonzaTag, this.nonzaXmlns});
-  final String? nonzaTag;
-  final String? nonzaXmlns;
-  final bool matchStanzas;
-
   /// Returns true if the node matches the description provided by this [Handler].
+  bool matches(XMLNode node);
+}
+
+/// A Handler that specialises in matching Nonzas (and stanzas).
+class NonzaHandler extends Handler {
+  NonzaHandler({
+    required this.callback,
+    this.nonzaTag,
+    this.nonzaXmlns,
+  });
+
+  /// The function to call when a nonza matches the description.
+  final Future<bool> Function(XMLNode) callback;
+
+  /// The expected tag of a matching nonza.
+  final String? nonzaTag;
+
+  // The expected xmlns attribute of a matching nonza.
+  final String? nonzaXmlns;
+
+  @override
   bool matches(XMLNode node) {
-    var matches = false;
+    var matches = true;
-
     if (nonzaTag == null && nonzaXmlns == null) {
-      matches = true;
+      return true;
-    }
+    } else {
-
+      if (nonzaXmlns != null) {
-    if (nonzaXmlns != null && nonzaTag != null) {
+        matches &= node.attributes['xmlns'] == nonzaXmlns;
-      matches = (node.attributes['xmlns'] ?? '') == nonzaXmlns! &&
+      }
-          node.tag == nonzaTag!;
+      if (nonzaTag != null) {
-    }
+        matches &= node.tag == nonzaTag;
-
+      }
-    if (matchStanzas && nonzaTag == null) {
-      matches = ['iq', 'presence', 'message'].contains(node.tag);
     }
 
     return matches;
   }
 }
 
-class NonzaHandler extends Handler {
+/// A Handler that only matches stanzas.
-  NonzaHandler({
-    required this.callback,
-    String? nonzaTag,
-    String? nonzaXmlns,
-  }) : super(
-          false,
-          nonzaTag: nonzaTag,
-          nonzaXmlns: nonzaXmlns,
-        );
-  final Future<bool> Function(XMLNode) callback;
-}
-
 class StanzaHandler extends Handler {
   StanzaHandler({
     required this.callback,
     this.tagXmlns,
     this.tagName,
     this.priority = 0,
-    String? stanzaTag,
+    this.stanzaTag,
-  }) : super(
+    this.xmlns,
-          true,
+  });
-          nonzaTag: stanzaTag,
+
-          nonzaXmlns: stanzaXmlns,
+  /// If specified, then the stanza must contain a direct child with a tag equal to
-        );
+  /// [tagName].
   final String? tagName;
+
+  /// If specified, then the stanza must contain a direct child with a xmlns attribute
+  /// equal to [tagXmlns]. If [tagName] is also non-null, then the element must also
+  /// have a tag equal to [tagName].
   final String? tagXmlns;
+
+  /// If specified, the matching stanza must have a tag equal to [stanzaTag].
+  final String? stanzaTag;
+
+  /// If specified, then the stanza must have a xmlns attribute equal to [xmlns].
+  /// This defaults to [stanzaXmlns], but can be set to any other value or null. This
+  /// is useful, for example, for components.
+  final String? xmlns;
+
+  /// The priority after which [StanzaHandler]s are sorted.
   final int priority;
+
+  /// The function to call when a stanza matches the description.
   final Future<StanzaHandlerData> Function(Stanza, StanzaHandlerData) callback;
 
   @override
   bool matches(XMLNode node) {
-    var matches = super.matches(node);
+    var matches = ['iq', 'message', 'presence'].contains(node.tag);
-
+    if (stanzaTag != null) {
-    if (matches == false) {
+      matches &= node.tag == stanzaTag;
-      return false;
+    }
+    if (xmlns != null) {
+      matches &= node.xmlns == xmlns;
     }
 
     if (tagName != null) {
       final firstTag = node.firstTag(tagName!, xmlns: tagXmlns);
+      matches &= firstTag != null;
 
-      matches = firstTag != null;
+      if (tagXmlns != null) {
+        matches &= firstTag?.xmlns == tagXmlns;
+      }
     } else if (tagXmlns != null) {
-      return listContains(
+      matches &= node.children.firstWhereOrNull(
-        node.children,
+            (XMLNode node_) => node_.attributes['xmlns'] == tagXmlns,
-        (XMLNode node_) =>
+          ) !=
-            node_.attributes.containsKey('xmlns') &&
+          null;
-            node_.attributes['xmlns'] == tagXmlns,
-      );
-    }
-
-    if (tagName == null && tagXmlns == null) {
-      matches = true;
     }
 
     return matches;

packages/moxxmpp/lib/src/managers/namespaces.dart

@@ -31,3 +31,6 @@ const lastMessageCorrectionManager = 'org.moxxmpp.lastmessagecorrectionmanager';
 const messageReactionsManager = 'org.moxxmpp.messagereactionsmanager';
 const stickersManager = 'org.moxxmpp.stickersmanager';
 const entityCapabilitiesManager = 'org.moxxmpp.entitycapabilities';
+const messageProcessingHintManager = 'org.moxxmpp.messageprocessinghint';
+const occupantIdManager = 'org.moxxmpp.occupantidmanager';
+const mucManager = 'org.moxxmpp.mucmanager';

packages/moxxmpp/lib/src/message.dart

@@ -1,325 +1,153 @@
-import 'package:moxlib/moxlib.dart';
+import 'package:collection/collection.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/base.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/managers/handlers.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
-import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/xeps/staging/file_upload_notification.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
 import 'package:moxxmpp/src/xeps/xep_0066.dart';
-import 'package:moxxmpp/src/xeps/xep_0085.dart';
-import 'package:moxxmpp/src/xeps/xep_0184.dart';
-import 'package:moxxmpp/src/xeps/xep_0308.dart';
-import 'package:moxxmpp/src/xeps/xep_0333.dart';
-import 'package:moxxmpp/src/xeps/xep_0334.dart';
-import 'package:moxxmpp/src/xeps/xep_0359.dart';
-import 'package:moxxmpp/src/xeps/xep_0424.dart';
-import 'package:moxxmpp/src/xeps/xep_0444.dart';
-import 'package:moxxmpp/src/xeps/xep_0446.dart';
 import 'package:moxxmpp/src/xeps/xep_0447.dart';
-import 'package:moxxmpp/src/xeps/xep_0448.dart';
+import 'package:moxxmpp/src/xeps/xep_0449.dart';
 import 'package:moxxmpp/src/xeps/xep_0461.dart';
 
-/// Data used to build a message stanza.
+/// A callback that is called whenever a message is sent using
-///
+/// [MessageManager.sendMessage]. The input the typed map that is passed to
-/// [setOOBFallbackBody] indicates, when using SFS, whether a OOB fallback should be
+/// sendMessage.
-/// added. This is recommended when sharing files but may cause issues when the message
+typedef MessageSendingCallback = List<XMLNode> Function(
-/// stanza should include a SFS element without any fallbacks.
+  TypedMap<StanzaHandlerExtension>,
-class MessageDetails {
+);
-  const MessageDetails({
+
-    required this.to,
+/// The raw content of the <body /> element.
-    this.body,
+class MessageBodyData implements StanzaHandlerExtension {
-    this.requestDeliveryReceipt = false,
+  const MessageBodyData(this.body);
-    this.requestChatMarkers = true,
+
-    this.id,
+  /// The content of the <body /> element.
-    this.originId,
-    this.quoteBody,
-    this.quoteId,
-    this.quoteFrom,
-    this.chatState,
-    this.sfs,
-    this.fun,
-    this.funReplacement,
-    this.funCancellation,
-    this.shouldEncrypt = false,
-    this.messageRetraction,
-    this.lastMessageCorrectionId,
-    this.messageReactions,
-    this.messageProcessingHints,
-    this.stickerPackId,
-    this.setOOBFallbackBody = true,
-  });
-  final String to;
   final String? body;
-  final bool requestDeliveryReceipt;
+
-  final bool requestChatMarkers;
+  XMLNode toXML() {
-  final String? id;
+    return XMLNode(
-  final String? originId;
+      tag: 'body',
-  final String? quoteBody;
+      text: body,
-  final String? quoteId;
+    );
-  final String? quoteFrom;
+  }
-  final ChatState? chatState;
+}
-  final StatelessFileSharingData? sfs;
+
-  final FileMetadataData? fun;
+/// The id attribute of the message stanza.
-  final String? funReplacement;
+class MessageIdData implements StanzaHandlerExtension {
-  final String? funCancellation;
+  const MessageIdData(this.id);
-  final bool shouldEncrypt;
+
-  final MessageRetractionData? messageRetraction;
+  /// The id attribute of the stanza.
-  final String? lastMessageCorrectionId;
+  final String id;
-  final MessageReactions? messageReactions;
-  final String? stickerPackId;
-  final List<MessageProcessingHint>? messageProcessingHints;
-  final bool setOOBFallbackBody;
 }
 
 class MessageManager extends XmppManagerBase {
   MessageManager() : super(messageManager);
 
+  /// The priority of the message handler. If a handler should run before this one,
+  /// which emits the [MessageEvent] event and terminates processing, make sure it
+  /// has a priority greater than [messageHandlerPriority].
+  static int messageHandlerPriority = -100;
+
+  /// A list of callbacks that are called when a message is sent in order to add
+  /// appropriate child elements.
+  final List<MessageSendingCallback> _messageSendingCallbacks =
+      List<MessageSendingCallback>.empty(growable: true);
+
+  void registerMessageSendingCallback(MessageSendingCallback callback) {
+    _messageSendingCallbacks.add(callback);
+  }
+
   @override
   List<StanzaHandler> getIncomingStanzaHandlers() => [
         StanzaHandler(
           stanzaTag: 'message',
           callback: _onMessage,
-          priority: -100,
+          priority: messageHandlerPriority,
-        )
+        ),
       ];
 
   @override
   Future<bool> isSupported() async => true;
 
   Future<StanzaHandlerData> _onMessage(
-    Stanza _,
+    Stanza stanza,
     StanzaHandlerData state,
   ) async {
-    final message = state.stanza;
+    final body = stanza.firstTag('body');
-    final body = message.firstTag('body');
+    if (body != null) {
-
+      state.extensions.set(
-    final hints = List<MessageProcessingHint>.empty(growable: true);
+        MessageBodyData(body.innerText()),
-    for (final element
+      );
-        in message.findTagsByXmlns(messageProcessingHintsXmlns)) {
-      hints.add(messageProcessingHintFromXml(element));
     }
 
     getAttributes().sendEvent(
       MessageEvent(
-        body: body != null ? body.innerText() : '',
+        JID.fromString(state.stanza.attributes['from']! as String),
-        fromJid: JID.fromString(message.attributes['from']! as String),
+        JID.fromString(state.stanza.attributes['to']! as String),
-        toJid: JID.fromString(message.attributes['to']! as String),
+        state.encrypted,
-        sid: message.attributes['id']! as String,
+        state.extensions,
-        stanzaId: state.stableId ?? const StableStanzaId(),
+        id: state.stanza.attributes['id'] as String?,
-        isCarbon: state.isCarbon,
+        type: state.stanza.attributes['type'] as String?,
-        deliveryReceiptRequested: state.deliveryReceiptRequested,
+        error: StanzaError.fromStanza(state.stanza),
-        isMarkable: state.isMarkable,
+        encryptionError: state.encryptionError,
-        type: message.attributes['type'] as String?,
-        oob: state.oob,
-        sfs: state.sfs,
-        sims: state.sims,
-        reply: state.reply,
-        chatState: state.chatState,
-        fun: state.fun,
-        funReplacement: state.funReplacement,
-        funCancellation: state.funCancellation,
-        encrypted: state.encrypted,
-        messageRetraction: state.messageRetraction,
-        messageCorrectionId: state.lastMessageCorrectionSid,
-        messageReactions: state.messageReactions,
-        messageProcessingHints: hints.isEmpty ? null : hints,
-        stickerPackId: state.stickerPackId,
-        other: state.other,
-        error: StanzaError.fromStanza(message),
       ),
     );
 
-    return state.copyWith(done: true);
+    return state..done = true;
   }
 
-  /// Send a message to to with the content body. If deliveryRequest is true, then
+  /// Send an unawaitable message to [to]. [extensions] is a typed map that contains
-  /// the message will also request a delivery receipt from the receiver.
+  /// data for building the message.
-  /// If id is non-null, then it will be the id of the message stanza.
+  Future<void> sendMessage(
-  /// element to this id. If originId is non-null, then it will create an "origin-id"
+    JID to,
-  /// child in the message stanza and set its id to originId.
+    TypedMap<StanzaHandlerExtension> extensions, {
-  void sendMessage(MessageDetails details) {
+    String type = 'chat',
-    assert(
+  }) async {
-      implies(
+    await getAttributes().sendStanza(
-        details.quoteBody != null,
+      StanzaDetails(
-        details.quoteFrom != null && details.quoteId != null,
+        Stanza.message(
+          to: to.toString(),
+          id: extensions.get<MessageIdData>()?.id,
+          type: type,
+          children: _messageSendingCallbacks
+              .map((c) => c(extensions))
+              .flattened
+              .toList(),
+        ),
+        extensions: extensions,
+        awaitable: false,
       ),
-      'When quoting a message, then quoteFrom and quoteId must also be non-null',
     );
+  }
 
-    final stanza = Stanza.message(
+  List<XMLNode> _messageSendingCallback(
-      to: details.to,
+    TypedMap<StanzaHandlerExtension> extensions,
-      type: 'chat',
+  ) {
-      id: details.id,
+    if (extensions.get<ReplyData>() != null) {
-      children: [],
+      return [];
-    );
+    }
-
+    if (extensions.get<StickersData>() != null) {
-    if (details.quoteBody != null) {
+      return [];
-      final quote = QuoteData.fromBodies(details.quoteBody!, details.body!);
+    }
-
+    if (extensions.get<StatelessFileSharingData>() != null) {
-      stanza
+      return [];
-        ..addChild(
+    }
-          XMLNode(tag: 'body', text: quote.body),
+    if (extensions.get<OOBData>() != null) {
-        )
+      return [];
-        ..addChild(
-          XMLNode.xmlns(
-            tag: 'reply',
-            xmlns: replyXmlns,
-            attributes: {'to': details.quoteFrom!, 'id': details.quoteId!},
-          ),
-        )
-        ..addChild(
-          XMLNode.xmlns(
-            tag: 'fallback',
-            xmlns: fallbackXmlns,
-            attributes: {'for': replyXmlns},
-            children: [
-              XMLNode(
-                tag: 'body',
-                attributes: <String, String>{
-                  'start': '0',
-                  'end': '${quote.fallbackLength}',
-                },
-              )
-            ],
-          ),
-        );
-    } else {
-      var body = details.body;
-      if (details.sfs != null && details.setOOBFallbackBody) {
-        // TODO(Unknown): Maybe find a better solution
-        final firstSource = details.sfs!.sources.first;
-        if (firstSource is StatelessFileSharingUrlSource) {
-          body = firstSource.url;
-        } else if (firstSource is StatelessFileSharingEncryptedSource) {
-          body = firstSource.source.url;
-        }
-      } else if (details.messageRetraction?.fallback != null) {
-        body = details.messageRetraction!.fallback;
-      }
-
-      if (body != null) {
-        stanza.addChild(
-          XMLNode(tag: 'body', text: body),
-        );
-      }
     }
 
-    if (details.requestDeliveryReceipt) {
+    final data = extensions.get<MessageBodyData>();
-      stanza.addChild(makeMessageDeliveryRequest());
+    return data != null ? [data.toXML()] : [];
-    }
+  }
-    if (details.requestChatMarkers) {
-      stanza.addChild(makeChatMarkerMarkable());
-    }
-    if (details.originId != null) {
-      stanza.addChild(makeOriginIdElement(details.originId!));
-    }
 
-    if (details.sfs != null) {
+  @override
-      stanza.addChild(details.sfs!.toXML());
+  Future<void> postRegisterCallback() async {
+    await super.postRegisterCallback();
 
-      final source = details.sfs!.sources.first;
+    // Register the sending callback
-      if (source is StatelessFileSharingUrlSource &&
+    registerMessageSendingCallback(_messageSendingCallback);
-          details.setOOBFallbackBody) {
-        // SFS recommends OOB as a fallback
-        stanza.addChild(constructOOBNode(OOBData(url: source.url)));
-      }
-    }
-
-    if (details.chatState != null) {
-      stanza.addChild(
-        // TODO(Unknown): Move this into xep_0085.dart
-        XMLNode.xmlns(
-          tag: chatStateToString(details.chatState!),
-          xmlns: chatStateXmlns,
-        ),
-      );
-    }
-
-    if (details.fun != null) {
-      stanza.addChild(
-        XMLNode.xmlns(
-          tag: 'file-upload',
-          xmlns: fileUploadNotificationXmlns,
-          children: [
-            details.fun!.toXML(),
-          ],
-        ),
-      );
-    }
-
-    if (details.funReplacement != null) {
-      stanza.addChild(
-        XMLNode.xmlns(
-          tag: 'replaces',
-          xmlns: fileUploadNotificationXmlns,
-          attributes: <String, String>{
-            'id': details.funReplacement!,
-          },
-        ),
-      );
-    }
-
-    if (details.messageRetraction != null) {
-      stanza.addChild(
-        XMLNode.xmlns(
-          tag: 'apply-to',
-          xmlns: fasteningXmlns,
-          attributes: <String, String>{
-            'id': details.messageRetraction!.id,
-          },
-          children: [
-            XMLNode.xmlns(
-              tag: 'retract',
-              xmlns: messageRetractionXmlns,
-            ),
-          ],
-        ),
-      );
-
-      if (details.messageRetraction!.fallback != null) {
-        stanza.addChild(
-          XMLNode.xmlns(
-            tag: 'fallback',
-            xmlns: fallbackIndicationXmlns,
-          ),
-        );
-      }
-    }
-
-    if (details.lastMessageCorrectionId != null) {
-      stanza.addChild(
-        makeLastMessageCorrectionEdit(
-          details.lastMessageCorrectionId!,
-        ),
-      );
-    }
-
-    if (details.messageReactions != null) {
-      stanza.addChild(details.messageReactions!.toXml());
-    }
-
-    if (details.messageProcessingHints != null) {
-      for (final hint in details.messageProcessingHints!) {
-        stanza.addChild(hint.toXml());
-      }
-    }
-
-    if (details.stickerPackId != null) {
-      stanza.addChild(
-        XMLNode.xmlns(
-          tag: 'sticker',
-          xmlns: stickersXmlns,
-          attributes: {
-            'pack': details.stickerPackId!,
-          },
-        ),
-      );
-    }
-
-    getAttributes().sendStanza(stanza, awaitable: false);
   }
 }

packages/moxxmpp/lib/src/namespaces.dart

@@ -9,9 +9,11 @@ const fullStanzaXmlns = 'urn:ietf:params:xml:ns:xmpp-stanzas';
 // RFC 6121
 const rosterXmlns = 'jabber:iq:roster';
 const rosterVersioningXmlns = 'urn:xmpp:features:rosterver';
+const subscriptionPreApprovalXmlns = 'urn:xmpp:features:pre-approval';
 
 // XEP-0004
 const dataFormsXmlns = 'jabber:x:data';
+const formVarFormType = 'FORM_TYPE';
 
 // XEP-0030
 const discoInfoXmlns = 'http://jabber.org/protocol/disco#info';
@@ -20,6 +22,11 @@ const discoItemsXmlns = 'http://jabber.org/protocol/disco#items';
 // XEP-0033
 const extendedAddressingXmlns = 'http://jabber.org/protocol/address';
 
+// XEP-0045
+const mucXmlns = 'http://jabber.org/protocol/muc';
+const mucUserXmlns = 'http://jabber.org/protocol/muc#user';
+const roomInfoFormType = 'http://jabber.org/protocol/muc#roominfo';
+
 // XEP-0054
 const vCardTempXmlns = 'vcard-temp';
 const vCardTempUpdate = 'vcard-temp:x:update';
@@ -65,6 +72,9 @@ const delayedDeliveryXmlns = 'urn:xmpp:delay';
 // XEP-0234
 const jingleFileTransferXmlns = 'urn:xmpp:jingle:apps:file-transfer:5';
 
+// XEP-0264
+const jingleContentThumbnailXmlns = 'urn:xmpp:thumbs:1';
+
 // XEP-0280
 const carbonsXmlns = 'urn:xmpp:carbons:2';
 
@@ -74,12 +84,6 @@ const forwardedXmlns = 'urn:xmpp:forward:0';
 // XEP-0300
 const hashXmlns = 'urn:xmpp:hashes:2';
 const hashFunctionNameBaseXmlns = 'urn:xmpp:hash-function-text-names';
-const hashSha256 = 'sha-256';
-const hashSha512 = 'sha-512';
-const hashSha3256 = 'sha3-256';
-const hashSha3512 = 'sha3-512';
-const hashBlake2b256 = 'blake2b-256';
-const hashBlake2b512 = 'blake2b-512';
 
 // XEP-0308
 const lmcXmlns = 'urn:xmpp:message-correct:0';
@@ -102,7 +106,7 @@ const httpFileUploadXmlns = 'urn:xmpp:http:upload:0';
 // XEP-0372
 const referenceXmlns = 'urn:xmpp:reference:0';
 
-// XEP-380
+// XEP-0380
 const emeXmlns = 'urn:xmpp:eme:0';
 const emeOtr = 'urn:xmpp:otr:0';
 const emeLegacyOpenPGP = 'jabber:x:encrypted';
@@ -128,6 +132,9 @@ const sasl2Xmlns = 'urn:xmpp:sasl:2';
 // XEP-0420
 const sceXmlns = 'urn:xmpp:sce:1';
 
+// XEP-0421
+const occupantIdXmlns = 'urn:xmpp:occupant-id:0';
+
 // XEP-0422
 const fasteningXmlns = 'urn:xmpp:fasten:0';
 
@@ -159,7 +166,6 @@ const stickersXmlns = 'urn:xmpp:stickers:0';
 
 // XEP-0461
 const replyXmlns = 'urn:xmpp:reply:0';
-const fallbackXmlns = 'urn:xmpp:feature-fallback:0';
 
 // ???
 const urlDataXmlns = 'http://jabber.org/protocol/url-data';

packages/moxxmpp/lib/src/negotiators/manager.dart

@@ -1 +0,0 @@
-

packages/moxxmpp/lib/src/negotiators/namespaces.dart

@@ -11,3 +11,4 @@ const sasl2Negotiator = 'org.moxxmpp.sasl.sasl2';
 const bind2Negotiator = 'org.moxxmpp.bind2';
 const saslFASTNegotiator = 'org.moxxmpp.sasl.fast';
 const carbonsNegotiator = 'org.moxxmpp.bind2.carbons';
+const presenceNegotiator = 'org.moxxmpp.core.presence';

packages/moxxmpp/lib/src/negotiators/negotiator.dart

@@ -1,3 +1,4 @@
+import 'package:collection/collection.dart';
 import 'package:meta/meta.dart';
 import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/connection.dart';
@@ -8,7 +9,6 @@ import 'package:moxxmpp/src/managers/base.dart';
 import 'package:moxxmpp/src/settings.dart';
 import 'package:moxxmpp/src/socket.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 
 /// The state a negotiator is currently in
 enum NegotiatorState {
@@ -117,8 +117,7 @@ abstract class XmppFeatureNegotiatorBase {
   /// Returns true if a feature in [features], which are the children of the
   /// <stream:features /> nonza, can be negotiated. Otherwise, returns false.
   bool matchesFeature(List<XMLNode> features) {
-    return firstWhereOrNull(
+    return features.firstWhereOrNull(
-          features,
           (XMLNode feature) => feature.attributes['xmlns'] == negotiatingXmlns,
         ) !=
         null;

packages/moxxmpp/lib/src/parser.dart

@@ -0,0 +1,169 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:moxxmpp/src/stringxml.dart';
+// ignore: implementation_imports
+import 'package:xml/src/xml_events/utils/conversion_sink.dart';
+import 'package:xml/xml.dart';
+import 'package:xml/xml_events.dart';
+
+/// A result object for XmlStreamBuffer.
+abstract class XMPPStreamObject {}
+
+/// A complete XML element returned by the stream buffer.
+class XMPPStreamElement extends XMPPStreamObject {
+  XMPPStreamElement(this.node);
+
+  /// The actual [XMLNode].
+  final XMLNode node;
+}
+
+/// Just the stream header of a new XML stream.
+class XMPPStreamHeader extends XMPPStreamObject {
+  XMPPStreamHeader(this.attributes);
+
+  /// The headers of the stream header.
+  final Map<String, String> attributes;
+}
+
+/// A wrapper around a [Converter]'s [Converter.startChunkedConversion] method.
+class _ChunkedConversionBuffer<S, T> {
+  /// Use the converter [converter].
+  _ChunkedConversionBuffer(Converter<S, List<T>> converter) {
+    _outputSink = ConversionSink<List<T>>(_results.addAll);
+    _inputSink = converter.startChunkedConversion(_outputSink);
+  }
+
+  /// The results of the converter.
+  final List<T> _results = List<T>.empty(growable: true);
+
+  /// The sink that outputs to [_results].
+  late ConversionSink<List<T>> _outputSink;
+
+  /// The sink that we use for input.
+  late Sink<S> _inputSink;
+
+  /// Close all opened sinks.
+  void close() {
+    _inputSink.close();
+    _outputSink.close();
+  }
+
+  /// Turn the input [input] into a list of [T] according to the initial converter.
+  List<T> convert(S input) {
+    _results.clear();
+    _inputSink.add(input);
+    return _results;
+  }
+}
+
+/// A buffer to put between a socket's input and a full XML stream.
+class XMPPStreamParser
+    extends StreamTransformerBase<String, List<XMPPStreamObject>> {
+  final StreamController<List<XMPPStreamObject>> _streamController =
+      StreamController<List<XMPPStreamObject>>();
+
+  /// Turns a String into a list of [XmlEvent]s in a chunked fashion.
+  _ChunkedConversionBuffer<String, XmlEvent> _eventBuffer =
+      _ChunkedConversionBuffer<String, XmlEvent>(XmlEventDecoder());
+
+  /// Turns a list of [XmlEvent]s into a list of [XmlNode]s in a chunked fashion.
+  _ChunkedConversionBuffer<List<XmlEvent>, XmlNode> _childBuffer =
+      _ChunkedConversionBuffer<List<XmlEvent>, XmlNode>(const XmlNodeDecoder());
+
+  /// The selectors.
+  _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent> _childSelector =
+      _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent>(
+    XmlSubtreeSelector((event) => event.qualifiedName != 'stream:stream'),
+  );
+  _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent> _streamHeaderSelector =
+      _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent>(
+    XmlSubtreeSelector((event) => event.qualifiedName == 'stream:stream'),
+  );
+
+  void reset() {
+    try {
+      _eventBuffer.close();
+    } catch (_) {
+      // Do nothing. A crash here may indicate that we end on invalid XML, which is fine
+      // since we're not going to use the buffer's output anymore.
+    }
+    try {
+      _childBuffer.close();
+    } catch (_) {
+      // Do nothing.
+    }
+    try {
+      _childSelector.close();
+    } catch (_) {
+      // Do nothing.
+    }
+    try {
+      _streamHeaderSelector.close();
+    } catch (_) {
+      // Do nothing.
+    }
+
+    // Recreate the buffers.
+    _eventBuffer =
+        _ChunkedConversionBuffer<String, XmlEvent>(XmlEventDecoder());
+    _childBuffer = _ChunkedConversionBuffer<List<XmlEvent>, XmlNode>(
+      const XmlNodeDecoder(),
+    );
+    _childSelector = _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent>(
+      XmlSubtreeSelector((event) => event.qualifiedName != 'stream:stream'),
+    );
+    _streamHeaderSelector = _ChunkedConversionBuffer<List<XmlEvent>, XmlEvent>(
+      XmlSubtreeSelector((event) => event.qualifiedName == 'stream:stream'),
+    );
+  }
+
+  @override
+  Stream<List<XMPPStreamObject>> bind(Stream<String> stream) {
+    // We do not want to use xml's toXmlEvents and toSubtreeEvents methods as they
+    // create streams we cannot close. We need to be able to destroy and recreate an
+    // XML parser whenever we start a new connection.
+    stream.listen((input) {
+      final events = _eventBuffer.convert(input);
+      final streamHeaderEvents = _streamHeaderSelector.convert(events);
+      final objects = List<XMPPStreamObject>.empty(growable: true);
+
+      // Process the stream header separately.
+      for (final event in streamHeaderEvents) {
+        if (event is! XmlStartElementEvent) {
+          continue;
+        }
+
+        if (event.name != 'stream:stream') {
+          continue;
+        }
+
+        objects.add(
+          XMPPStreamHeader(
+            Map<String, String>.fromEntries(
+              event.attributes.map((attr) {
+                return MapEntry(attr.name, attr.value);
+              }),
+            ),
+          ),
+        );
+      }
+
+      // Process the children of the <stream:stream> element.
+      final childEvents = _childSelector.convert(events);
+      final children = _childBuffer.convert(childEvents);
+      for (final node in children) {
+        if (node.nodeType == XmlNodeType.ELEMENT) {
+          objects.add(
+            XMPPStreamElement(
+              XMLNode.fromXmlElement(node as XmlElement),
+            ),
+          );
+        }
+      }
+
+      _streamController.add(objects);
+    });
+
+    return _streamController.stream;
+  }
+}

packages/moxxmpp/lib/src/presence.dart

@@ -1,5 +1,5 @@
 import 'dart:async';
-import 'package:moxxmpp/src/connection.dart';
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/base.dart';
@@ -8,15 +8,44 @@ import 'package:moxxmpp/src/managers/handlers.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/namespaces.dart';
+import 'package:moxxmpp/src/negotiators/negotiator.dart';
 import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/xeps/xep_0198/negotiator.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
+import 'package:moxxmpp/src/xeps/xep_0198/types.dart';
 
 /// A function that will be called when presence, outside of subscription request
 /// management, will be sent. Useful for managers that want to add [XMLNode]s to said
 /// presence.
 typedef PresencePreSendCallback = Future<List<XMLNode>> Function();
 
+/// A pseudo-negotiator that does not really negotiate anything. Instead, its purpose
+/// is to look for a stream feature indicating that we can pre-approve subscription
+/// requests, shown by [PresenceNegotiator.preApprovalSupported].
+class PresenceNegotiator extends XmppFeatureNegotiatorBase {
+  PresenceNegotiator()
+      : super(11, false, subscriptionPreApprovalXmlns, presenceNegotiator);
+
+  /// Flag indicating whether presence subscription pre-approval is supported
+  bool _supported = false;
+  bool get preApprovalSupported => _supported;
+
+  @override
+  Future<Result<NegotiatorState, NegotiatorError>> negotiate(
+    XMLNode nonza,
+  ) async {
+    _supported = true;
+    return const Result(NegotiatorState.done);
+  }
+
+  @override
+  void reset() {
+    _supported = false;
+
+    super.reset();
+  }
+}
+
 /// A mandatory manager that handles initial presence sending, sending of subscription
 /// request management requests and triggers events for incoming presence stanzas.
 class PresenceManager extends XmppManagerBase {
@@ -26,12 +55,18 @@ class PresenceManager extends XmppManagerBase {
   final List<PresencePreSendCallback> _presenceCallbacks =
       List.empty(growable: true);
 
+  /// The priority of the presence handler. If a handler should run before this one,
+  /// which terminates processing, make sure the handler has a priority greater than
+  /// [presenceHandlerPriority].
+  static int presenceHandlerPriority = -100;
+
   @override
   List<StanzaHandler> getIncomingStanzaHandlers() => [
         StanzaHandler(
           stanzaTag: 'presence',
           callback: _onPresence,
-        )
+          priority: presenceHandlerPriority,
+        ),
       ];
 
   @override
@@ -49,12 +84,8 @@ class PresenceManager extends XmppManagerBase {
   Future<void> onXmppEvent(XmppEvent event) async {
     if (event is StreamNegotiationsDoneEvent) {
       // Send initial presence only when we have not resumed the stream
-      final sm = getAttributes().getNegotiatorById<StreamManagementNegotiator>(
+      if (!event.resumed) {
-        streamManagementNegotiator,
+        await sendInitialPresence();
-      );
-      final isResumed = sm?.isResumed ?? false;
-      if (!isResumed) {
-        unawaited(sendInitialPresence());
       }
     }
   }
@@ -73,7 +104,7 @@ class PresenceManager extends XmppManagerBase {
               from: JID.fromString(presence.from!),
             ),
           );
-          return state.copyWith(done: true);
+          return state..done = true;
         }
       default:
         break;
@@ -82,10 +113,7 @@ class PresenceManager extends XmppManagerBase {
     if (presence.from != null) {
       logger.finest("Received presence from '${presence.from}'");
 
-      getAttributes().sendEvent(
+      return state..done = true;
-        PresenceReceivedEvent(JID.fromString(presence.from!), presence),
-      );
-      return state.copyWith(done: true);
     }
 
     return state;
@@ -107,65 +135,112 @@ class PresenceManager extends XmppManagerBase {
     }
 
     final attrs = getAttributes();
-    attrs.sendNonza(
+    await attrs.sendStanza(
-      Stanza.presence(
+      StanzaDetails(
-        from: attrs.getFullJID().toString(),
+        Stanza.presence(
-        children: children,
+          children: children,
+        ),
+        awaitable: false,
+        addId: false,
       ),
     );
   }
 
   /// Send an unavailable presence with no 'to' attribute.
-  void sendUnavailablePresence() {
+  Future<void> sendUnavailablePresence() async {
-    getAttributes().sendStanza(
+    // Bypass the queue so that this get's sent immediately.
-      Stanza.presence(
+    // If we do it like this, we can also block the disconnection
-        type: 'unavailable',
+    // until we're actually ready.
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.presence(
+          type: 'unavailable',
+        ),
+        awaitable: false,
+        bypassQueue: true,
+        postSendExtensions: TypedMap<StanzaHandlerExtension>.fromList([
+          const StreamManagementData(true, null),
+        ]),
       ),
-      addFrom: StanzaFromType.full,
     );
   }
 
-  /// Sends a subscription request to [to].
+  /// Similar to [requestSubscription], but it also tells the server to automatically
-  void sendSubscriptionRequest(String to) {
+  /// accept a subscription request from [to], should it arrive.
-    getAttributes().sendStanza(
+  /// This requires a [PresenceNegotiator] to be registered as this feature is optional.
-      Stanza.presence(
+  ///
-        type: 'subscribe',
+  /// Returns true, when the stanza was sent. Returns false, when the stanza was not sent,
-        to: to,
+  /// for example because the server does not support subscription pre-approvals.
+  Future<bool> preApproveSubscription(JID to) async {
+    final negotiator = getAttributes()
+        .getNegotiatorById<PresenceNegotiator>(presenceNegotiator);
+    assert(negotiator != null, 'No PresenceNegotiator registered');
+
+    if (!negotiator!.preApprovalSupported) {
+      return false;
+    }
+
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.presence(
+          type: 'subscribed',
+          to: to.toString(),
+        ),
+        awaitable: false,
+      ),
+    );
+    return true;
+  }
+
+  /// Sends a subscription request to [to].
+  Future<void> requestSubscription(JID to) async {
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.presence(
+          type: 'subscribe',
+          to: to.toString(),
+        ),
+        awaitable: false,
+      ),
+    );
+  }
+
+  /// Accept a subscription request from [to].
+  Future<void> acceptSubscriptionRequest(JID to) async {
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.presence(
+          type: 'subscribed',
+          to: to.toString(),
+        ),
+        awaitable: false,
+      ),
+    );
+  }
+
+  /// Send a subscription request rejection to [to].
+  Future<void> rejectSubscriptionRequest(JID to) async {
+    await getAttributes().sendStanza(
+      StanzaDetails(
+        Stanza.presence(
+          type: 'unsubscribed',
+          to: to.toString(),
+        ),
+        awaitable: false,
       ),
-      addFrom: StanzaFromType.none,
     );
   }
 
   /// Sends an unsubscription request to [to].
-  void sendUnsubscriptionRequest(String to) {
+  Future<void> unsubscribe(JID to) async {
-    getAttributes().sendStanza(
+    await getAttributes().sendStanza(
-      Stanza.presence(
+      StanzaDetails(
-        type: 'unsubscribe',
+        Stanza.presence(
-        to: to,
+          type: 'unsubscribe',
+          to: to.toString(),
+        ),
+        awaitable: false,
       ),
-      addFrom: StanzaFromType.none,
-    );
-  }
-
-  /// Accept a presence subscription request for [to].
-  void sendSubscriptionRequestApproval(String to) {
-    getAttributes().sendStanza(
-      Stanza.presence(
-        type: 'subscribed',
-        to: to,
-      ),
-      addFrom: StanzaFromType.none,
-    );
-  }
-
-  /// Reject a presence subscription request for [to].
-  void sendSubscriptionRequestRejection(String to) {
-    getAttributes().sendStanza(
-      Stanza.presence(
-        type: 'unsubscribed',
-        to: to,
-      ),
-      addFrom: StanzaFromType.none,
     );
   }
 }

packages/moxxmpp/lib/src/reconnect.dart

@@ -111,31 +111,47 @@ class RandomBackoffReconnectionPolicy extends ReconnectionPolicy {
   /// Called when the backoff expired
   @visibleForTesting
   Future<void> onTimerElapsed() async {
-    _log.fine('Timer elapsed. Waiting for lock...');
+    _log.finest('Timer elapsed. Waiting for lock...');
-    await _timerLock.synchronized(() async {
+    final shouldContinue = await _timerLock.synchronized(() async {
+      _log.finest('Timer lock aquired');
+      if (_timer == null) {
+        _log.finest(
+          'The timer is already set to null. Doing nothing.',
+        );
+        return false;
+      }
+
       if (!(await getIsReconnecting())) {
-        return;
+        return false;
       }
 
       if (!(await getShouldReconnect())) {
-        _log.fine(
+        _log.finest(
           'Should not reconnect. Stopping here.',
         );
-        return;
+        return false;
       }
 
-      _log.fine('Triggering reconnect');
       _timer?.cancel();
       _timer = null;
-      await performReconnect!();
+      return true;
     });
+
+    if (!shouldContinue) {
+      return;
+    }
+
+    _log.fine('Triggering reconnect');
+    await performReconnect!();
   }
 
   @override
   Future<void> reset() async {
     _log.finest('Resetting internal state');
-    _timer?.cancel();
+    await _timerLock.synchronized(() {
-    _timer = null;
+      _timer?.cancel();
+      _timer = null;
+    });
     await super.reset();
   }
 
@@ -144,9 +160,11 @@ class RandomBackoffReconnectionPolicy extends ReconnectionPolicy {
     final seconds =
         Random().nextInt(_maxBackoffTime - _minBackoffTime) + _minBackoffTime;
     _log.finest('Failure occured. Starting random backoff with ${seconds}s');
-    _timer?.cancel();
 
-    _timer = Timer(Duration(seconds: seconds), onTimerElapsed);
+    await _timerLock.synchronized(() {
+      _timer?.cancel();
+      _timer = Timer(Duration(seconds: seconds), onTimerElapsed);
+    });
   }
 
   @override

packages/moxxmpp/lib/src/rfcs/rfc_6120/resource_binding.dart

@@ -1,10 +1,10 @@
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 import 'package:moxxmpp/src/xeps/xep_0198/xep_0198.dart';
 import 'package:uuid/uuid.dart';
 

packages/moxxmpp/lib/src/rfcs/rfc_6120/sasl/negotiator.dart

@@ -1,4 +1,4 @@
-import 'package:moxlib/moxlib.dart';
+import 'package:collection/collection.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
 import 'package:moxxmpp/src/stringxml.dart';
@@ -13,15 +13,13 @@ abstract class SaslNegotiator extends XmppFeatureNegotiatorBase {
   @override
   bool matchesFeature(List<XMLNode> features) {
     // Is SASL advertised?
-    final mechanisms = firstWhereOrNull(
+    final mechanisms = features.firstWhereOrNull(
-      features,
       (XMLNode feature) => feature.attributes['xmlns'] == saslXmlns,
     );
     if (mechanisms == null) return false;
 
     // Is SASL PLAIN advertised?
-    return firstWhereOrNull(
+    return mechanisms.children.firstWhereOrNull(
-          mechanisms.children,
           (XMLNode mechanism) => mechanism.text == mechanismName,
         ) !=
         null;

packages/moxxmpp/lib/src/rfcs/rfc_6120/sasl/plain.dart

@@ -1,12 +1,12 @@
 import 'dart:convert';
 import 'package:logging/logging.dart';
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/negotiators/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
 import 'package:moxxmpp/src/rfcs/rfc_6120/sasl/errors.dart';
 import 'package:moxxmpp/src/rfcs/rfc_6120/sasl/nonza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 import 'package:moxxmpp/src/xeps/xep_0388/negotiators.dart';
 import 'package:moxxmpp/src/xeps/xep_0388/xep_0388.dart';
 import 'package:saslprep/saslprep.dart';
@@ -96,7 +96,9 @@ class SaslPlainNegotiator extends Sasl2AuthenticationNegotiator {
 
   @override
   Future<Result<bool, NegotiatorError>> onSasl2Success(XMLNode response) async {
-    state = NegotiatorState.done;
+    if (pickedForSasl2) {
+      state = NegotiatorState.done;
+    }
     return const Result(true);
   }
 

packages/moxxmpp/lib/src/rfcs/rfc_6120/sasl/scram.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'dart:math' show Random;
 import 'package:cryptography/cryptography.dart';
 import 'package:logging/logging.dart';
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/namespaces.dart';
@@ -10,7 +11,6 @@ import 'package:moxxmpp/src/rfcs/rfc_6120/sasl/errors.dart';
 import 'package:moxxmpp/src/rfcs/rfc_6120/sasl/kv.dart';
 import 'package:moxxmpp/src/rfcs/rfc_6120/sasl/nonza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 import 'package:moxxmpp/src/xeps/xep_0388/negotiators.dart';
 import 'package:moxxmpp/src/xeps/xep_0388/xep_0388.dart';
 import 'package:random_string/random_string.dart';
@@ -246,6 +246,9 @@ class SaslScramNegotiator extends Sasl2AuthenticationNegotiator {
   bool _checkSignature(String base64Signature) {
     final signature =
         parseKeyValue(utf8.decode(base64.decode(base64Signature)));
+    _log.finest(
+      'Expecting signature: "$_serverSignature", got: "${signature["v"]}"',
+    );
     return signature['v']! == _serverSignature;
   }
 
@@ -360,6 +363,11 @@ class SaslScramNegotiator extends Sasl2AuthenticationNegotiator {
 
   @override
   Future<Result<bool, NegotiatorError>> onSasl2Success(XMLNode response) async {
+    // Don't do anything if we have not been picked for SASL2.
+    if (!pickedForSasl2) {
+      return const Result(true);
+    }
+
     // When we're done with SASL2, check the additional data to verify the server
     // signature.
     state = NegotiatorState.done;

packages/moxxmpp/lib/src/rfcs/rfc_6120/starttls.dart

@@ -1,9 +1,9 @@
 import 'package:logging/logging.dart';
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/namespaces.dart';
 import 'package:moxxmpp/src/negotiators/negotiator.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 
 enum _StartTlsState { ready, requested }
 

packages/moxxmpp/lib/src/roster/roster.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'package:collection/collection.dart';
 import 'package:meta/meta.dart';
+import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/attributes.dart';
 import 'package:moxxmpp/src/managers/base.dart';
@@ -14,7 +15,6 @@ import 'package:moxxmpp/src/roster/errors.dart';
 import 'package:moxxmpp/src/roster/state.dart';
 import 'package:moxxmpp/src/stanza.dart';
 import 'package:moxxmpp/src/stringxml.dart';
-import 'package:moxxmpp/src/types/result.dart';
 
 @immutable
 class XmppRosterItem {
@@ -122,7 +122,7 @@ class RosterManager extends XmppManagerBase {
           tagName: 'query',
           tagXmlns: rosterXmlns,
           callback: _onRosterPush,
-        )
+        ),
       ];
 
   @override
@@ -145,7 +145,7 @@ class RosterManager extends XmppManagerBase {
       logger.warning(
         'Roster push invalid! Unexpected from attribute: ${stanza.toXml()}',
       );
-      return state.copyWith(done: true);
+      return state..done = true;
     }
 
     final query = stanza.firstTag('query', xmlns: rosterXmlns)!;
@@ -154,7 +154,7 @@ class RosterManager extends XmppManagerBase {
 
     if (item == null) {
       logger.warning('Received empty roster push');
-      return state.copyWith(done: true);
+      return state..done = true;
     }
 
     unawaited(
@@ -177,13 +177,23 @@ class RosterManager extends XmppManagerBase {
       [],
     );
 
-    return state.copyWith(done: true);
+    return state..done = true;
   }
 
   /// Shared code between requesting rosters without and with roster versioning, if
   /// the server deems a regular roster response more efficient than n roster pushes.
+  ///
+  /// [query] is the <query /> child of the iq, if available.
+  ///
+  /// If roster versioning was used, then [requestedRosterVersion] is the version
+  /// we requested the roster with.
+  ///
+  /// Note that if roster versioning is used and the server returns us an empty iq,
+  /// it means that the roster did not change since the last version. In that case,
+  /// we do nothing and just return. The roster state manager will not be notified.
   Future<Result<RosterRequestResult, RosterError>> _handleRosterResponse(
     XMLNode? query,
+    String? requestedRosterVersion,
   ) async {
     final List<XmppRosterItem> items;
     String? rosterVersion;
@@ -204,6 +214,14 @@ class RosterManager extends XmppManagerBase {
           .toList();
 
       rosterVersion = query.attributes['ver'] as String?;
+    } else if (requestedRosterVersion != null) {
+      // Skip the handleRosterFetch call since nothing changed.
+      return Result(
+        RosterRequestResult(
+          [],
+          requestedRosterVersion,
+        ),
+      );
     } else {
       logger.warning(
         'Server response to roster request without roster versioning does not contain a <query /> element, while the type is not error. This violates RFC6121',
@@ -223,26 +241,34 @@ class RosterManager extends XmppManagerBase {
     return Result(result);
   }
 
-  /// Requests the roster following RFC 6121.
+  /// Requests the roster following RFC 6121. If [useRosterVersion] is set to false, then
-  Future<Result<RosterRequestResult, RosterError>> requestRoster() async {
+  /// roster versioning will not be used, even if the server supports it and we have a last
+  /// known roster version.
+  Future<Result<RosterRequestResult, RosterError>> requestRoster({
+    bool useRosterVersion = true,
+  }) async {
     final attrs = getAttributes();
     final query = XMLNode.xmlns(
       tag: 'query',
       xmlns: rosterXmlns,
     );
     final rosterVersion = await _stateManager.getRosterVersion();
-    if (rosterVersion != null && rosterVersioningAvailable()) {
+    if (rosterVersion != null &&
+        rosterVersioningAvailable() &&
+        useRosterVersion) {
       query.attributes['ver'] = rosterVersion;
     }
 
-    final response = await attrs.sendStanza(
+    final response = (await attrs.sendStanza(
-      Stanza.iq(
+      StanzaDetails(
-        type: 'get',
+        Stanza.iq(
-        children: [
+          type: 'get',
-          query,
+          children: [
-        ],
+            query,
+          ],
+        ),
       ),
-    );
+    ))!;
 
     if (response.attributes['type'] != 'result') {
       logger.warning('Error requesting roster: ${response.toXml()}');
@@ -250,7 +276,7 @@ class RosterManager extends XmppManagerBase {
     }
 
     final responseQuery = response.firstTag('query', xmlns: rosterXmlns);
-    return _handleRosterResponse(responseQuery);
+    return _handleRosterResponse(responseQuery, rosterVersion);
   }
 
   /// Requests a series of roster pushes according to RFC6121. Requires that the server
@@ -258,20 +284,23 @@ class RosterManager extends XmppManagerBase {
   Future<Result<RosterRequestResult?, RosterError>>
       requestRosterPushes() async {
     final attrs = getAttributes();
-    final result = await attrs.sendStanza(
+    final rosterVersion = await _stateManager.getRosterVersion();
-      Stanza.iq(
+    final result = (await attrs.sendStanza(
-        type: 'get',
+      StanzaDetails(
-        children: [
+        Stanza.iq(
-          XMLNode.xmlns(
+          type: 'get',
-            tag: 'query',
+          children: [
-            xmlns: rosterXmlns,
+            XMLNode.xmlns(
-            attributes: {
+              tag: 'query',
-              'ver': await _stateManager.getRosterVersion() ?? '',
+              xmlns: rosterXmlns,
-            },
+              attributes: {
-          )
+                'ver': rosterVersion ?? '',
-        ],
+              },
+            ),
+          ],
+        ),
       ),
-    );
+    ))!;
 
     if (result.attributes['type'] != 'result') {
       logger.warning('Requesting roster pushes failed: ${result.toXml()}');
@@ -279,7 +308,7 @@ class RosterManager extends XmppManagerBase {
     }
 
     final query = result.firstTag('query', xmlns: rosterXmlns);
-    return _handleRosterResponse(query);
+    return _handleRosterResponse(query, rosterVersion);
   }
 
   bool rosterVersioningAvailable() {
@@ -296,31 +325,31 @@ class RosterManager extends XmppManagerBase {
     List<String>? groups,
   }) async {
     final attrs = getAttributes();
-    final response = await attrs.sendStanza(
+    final response = (await attrs.sendStanza(
-      Stanza.iq(
+      StanzaDetails(
-        type: 'set',
+        Stanza.iq(
-        children: [
+          type: 'set',
-          XMLNode.xmlns(
+          children: [
-            tag: 'query',
+            XMLNode.xmlns(
-            xmlns: rosterXmlns,
+              tag: 'query',
-            children: [
+              xmlns: rosterXmlns,
-              XMLNode(
+              children: [
-                tag: 'item',
+                XMLNode(
-                attributes: <String, String>{
+                  tag: 'item',
-                  'jid': jid,
+                  attributes: <String, String>{
-                  ...title == jid.split('@')[0]
+                    'jid': jid,
-                      ? <String, String>{}
+                    if (title == jid.split('@')[0]) 'name': title,
-                      : <String, String>{'name': title}
+                  },
-                },
+                  children: (groups ?? [])
-                children: (groups ?? [])
+                      .map((group) => XMLNode(tag: 'group', text: group))
-                    .map((group) => XMLNode(tag: 'group', text: group))
+                      .toList(),
-                    .toList(),
+                ),
-              )
+              ],
-            ],
+            ),
-          )
+          ],
-        ],
+        ),
       ),
-    );
+    ))!;
 
     if (response.attributes['type'] != 'result') {
       logger.severe('Error adding $jid to roster: $response');
@@ -334,26 +363,28 @@ class RosterManager extends XmppManagerBase {
   /// false otherwise.
   Future<RosterRemovalResult> removeFromRoster(String jid) async {
     final attrs = getAttributes();
-    final response = await attrs.sendStanza(
+    final response = (await attrs.sendStanza(
-      Stanza.iq(
+      StanzaDetails(
-        type: 'set',
+        Stanza.iq(
-        children: [
+          type: 'set',
-          XMLNode.xmlns(
+          children: [
-            tag: 'query',
+            XMLNode.xmlns(
-            xmlns: rosterXmlns,
+              tag: 'query',
-            children: [
+              xmlns: rosterXmlns,
-              XMLNode(
+              children: [
-                tag: 'item',
+                XMLNode(
-                attributes: <String, String>{
+                  tag: 'item',
-                  'jid': jid,
+                  attributes: {
-                  'subscription': 'remove'
+                    'jid': jid,
-                },
+                    'subscription': 'remove',
-              )
+                  },
-            ],
+                ),
-          )
+              ],
-        ],
+            ),
+          ],
+        ),
       ),
-    );
+    ))!;
 
     if (response.attributes['type'] != 'result') {
       logger.severe('Failed to remove roster item: ${response.toXml()}');

packages/moxxmpp/lib/src/settings.dart

@@ -19,4 +19,7 @@ class ConnectionSettings {
 
   /// The port to connect to. Skips DNS resolution if specified.
   final int? port;
+
+  /// The JID of the server we're connected to.
+  JID get serverJid => JID('', jid.domain, '');
 }

packages/moxxmpp/lib/src/stanza.dart

@@ -1,28 +1,109 @@
+import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/stringxml.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
 
-/// A simple description of the <error /> element that may be inside a stanza
+/// A description of a stanza to send.
-class StanzaError {
+class StanzaDetails {
-  StanzaError(this.type, this.error);
+  const StanzaDetails(
-  String type;
+    this.stanza, {
-  String error;
+    this.extensions,
+    this.addId = true,
+    this.awaitable = true,
+    this.shouldEncrypt = true,
+    this.encrypted = false,
+    this.forceEncryption = false,
+    this.bypassQueue = false,
+    this.postSendExtensions,
+  });
+
+  /// The stanza to send.
+  final Stanza stanza;
+
+  /// The extension data used for constructing the stanza.
+  final TypedMap<StanzaHandlerExtension>? extensions;
+
+  /// Flag indicating whether a stanza id should be added before sending.
+  final bool addId;
+
+  /// Track the stanza to allow awaiting its response.
+  final bool awaitable;
+
+  final bool forceEncryption;
+
+  /// Flag indicating whether the stanza that is sent is already encrypted (true)
+  /// or not (false). This is only useful for E2EE implementations that have to
+  /// send heartbeats that must bypass themselves.
+  final bool encrypted;
+
+  /// Tells an E2EE implementation, if available, to encrypt the stanza (true) or
+  /// ignore the stanza (false).
+  final bool shouldEncrypt;
+
+  /// Bypasses being put into the queue. Useful for sending stanzas that must go out
+  /// now, where it's okay if it does not get sent.
+  /// This should never have to be set to true.
+  final bool bypassQueue;
+
+  /// This makes the Stream Management implementation, when available, ignore the stanza,
+  /// meaning that it gets counted but excluded from resending.
+  /// This should never have to be set to true.
+  final TypedMap<StanzaHandlerExtension>? postSendExtensions;
+}
+
+/// A general error type for errors.
+abstract class StanzaError {
+  static StanzaError? fromXMLNode(XMLNode node) {
+    final error = node.firstTag('error');
+    if (error == null) {
+      return null;
+    }
+
+    final specificError = error.firstTagByXmlns(fullStanzaXmlns);
+    if (specificError == null) {
+      return UnknownStanzaError();
+    }
+
+    switch (specificError.tag) {
+      case RemoteServerNotFoundError.tag:
+        return RemoteServerNotFoundError();
+      case RemoteServerTimeoutError.tag:
+        return RemoteServerTimeoutError();
+      case ServiceUnavailableError.tag:
+        return ServiceUnavailableError();
+    }
+
+    return UnknownStanzaError();
+  }
 
-  /// Returns a StanzaError if [stanza] contains a <error /> element. If not, returns
-  /// null.
   static StanzaError? fromStanza(Stanza stanza) {
-    final error = stanza.firstTag('error');
+    return fromXMLNode(stanza);
-    if (error == null) return null;
-
-    final stanzaError = error.firstTagByXmlns(fullStanzaXmlns);
-    if (stanzaError == null) return null;
-
-    return StanzaError(
-      error.attributes['type']! as String,
-      stanzaError.tag,
-    );
   }
 }
 
+/// Recipient does not provide a given service.
+/// https://xmpp.org/rfcs/rfc6120.html#stanzas-error-conditions-service-unavailable
+class ServiceUnavailableError extends StanzaError {
+  static const tag = 'service-unavailable';
+}
+
+/// Could not connect to the remote server.
+/// https://xmpp.org/rfcs/rfc6120.html#stanzas-error-conditions-remote-server-not-found
+class RemoteServerNotFoundError extends StanzaError {
+  static const tag = 'remote-server-not-found';
+}
+
+/// The connection to the remote server timed out.
+/// https://xmpp.org/rfcs/rfc6120.html#stanzas-error-conditions-remote-server-timeout
+class RemoteServerTimeoutError extends StanzaError {
+  static const tag = 'remote-server-timeout';
+}
+
+/// An unknown error.
+class UnknownStanzaError extends StanzaError {}
+
+const _stanzaNotDefined = Object();
+
 class Stanza extends XMLNode {
   // ignore: use_super_parameters
   Stanza({
@@ -33,6 +114,7 @@ class Stanza extends XMLNode {
     List<XMLNode> children = const [],
     required String tag,
     Map<String, String> attributes = const {},
+    String? xmlns,
   }) : super(
           tag: tag,
           attributes: <String, dynamic>{
@@ -45,7 +127,7 @@ class Stanza extends XMLNode {
             ...from != null
                 ? <String, dynamic>{'from': from}
                 : <String, dynamic>{},
-            'xmlns': stanzaXmlns
+            if (xmlns != null) 'xmlns': xmlns,
           },
           children: children,
         );
@@ -57,6 +139,7 @@ class Stanza extends XMLNode {
     String? id,
     List<XMLNode> children = const [],
     Map<String, String>? attributes = const {},
+    String? xmlns,
   }) {
     return Stanza(
       tag: 'iq',
@@ -64,8 +147,9 @@ class Stanza extends XMLNode {
       to: to,
       id: id,
       type: type,
-      attributes: <String, String>{...attributes!, 'xmlns': stanzaXmlns},
+      attributes: <String, String>{...attributes!},
       children: children,
+      xmlns: xmlns,
     );
   }
 
@@ -76,6 +160,7 @@ class Stanza extends XMLNode {
     String? id,
     List<XMLNode> children = const [],
     Map<String, String>? attributes = const {},
+    String? xmlns,
   }) {
     return Stanza(
       tag: 'presence',
@@ -83,8 +168,9 @@ class Stanza extends XMLNode {
       to: to,
       id: id,
       type: type,
-      attributes: <String, String>{...attributes!, 'xmlns': stanzaXmlns},
+      attributes: <String, String>{...attributes!},
       children: children,
+      xmlns: xmlns,
     );
   }
   factory Stanza.message({
@@ -94,6 +180,7 @@ class Stanza extends XMLNode {
     String? id,
     List<XMLNode> children = const [],
     Map<String, String>? attributes = const {},
+    String? xmlns,
   }) {
     return Stanza(
       tag: 'message',
@@ -101,8 +188,9 @@ class Stanza extends XMLNode {
       to: to,
       id: id,
       type: type,
-      attributes: <String, String>{...attributes!, 'xmlns': stanzaXmlns},
+      attributes: <String, String>{...attributes!},
       children: children,
+      xmlns: xmlns,
     );
   }
 
@@ -130,18 +218,23 @@ class Stanza extends XMLNode {
 
   Stanza copyWith({
     String? id,
-    String? from,
+    Object? from = _stanzaNotDefined,
     String? to,
     String? type,
     List<XMLNode>? children,
+    String? xmlns,
   }) {
     return Stanza(
       tag: tag,
       to: to ?? this.to,
-      from: from ?? this.from,
+      from: from != _stanzaNotDefined ? from as String? : this.from,
       id: id ?? this.id,
       type: type ?? this.type,
       children: children ?? this.children,
+      attributes: {
+        ...attributes.cast<String, String>(),
+      },
+      xmlns: xmlns ?? this.xmlns,
     );
   }
 }
@@ -157,15 +250,14 @@ XMLNode buildErrorElement(String type, String condition, {String? text}) {
       XMLNode.xmlns(
         tag: condition,
         xmlns: fullStanzaXmlns,
-        children: text != null
+        children: [
-            ? [
+          if (text != null)
-                XMLNode.xmlns(
+            XMLNode.xmlns(
-                  tag: 'text',
+              tag: 'text',
-                  xmlns: fullStanzaXmlns,
+              xmlns: fullStanzaXmlns,
-                  text: text,
+              text: text,
-                )
+            ),
-              ]
+        ],
-            : [],
       ),
     ],
   );

packages/moxxmpp/lib/src/types/result.dart

@@ -1,16 +0,0 @@
-class Result<T, V> {
-  const Result(this._data)
-      : assert(
-          _data is T || _data is V,
-          'Invalid data type: Must be either $T or $V',
-        );
-  final dynamic _data;
-
-  bool isType<S>() => _data is S;
-
-  S get<S>() {
-    assert(_data is S, 'Data is not $S');
-
-    return _data as S;
-  }
-}

packages/moxxmpp/lib/src/util/incoming_queue.dart

@@ -0,0 +1,97 @@
+import 'dart:async';
+import 'dart:collection';
+import 'package:logging/logging.dart';
+import 'package:moxxmpp/src/awaiter.dart';
+import 'package:moxxmpp/src/parser.dart';
+import 'package:synchronized/synchronized.dart';
+
+/// A queue for incoming [XMPPStreamObject]s to ensure "in order"
+/// processing (except for stanzas that are awaited).
+class IncomingStanzaQueue {
+  IncomingStanzaQueue(this._callback, this._stanzaAwaiter);
+
+  /// The queue for storing the completer of each
+  /// incoming stanza (or stream object to be precise).
+  /// Only access while holding the lock [_lock].
+  final Queue<Completer<void>> _queue = Queue();
+
+  /// Flag indicating whether a callback is already running (true)
+  /// or not. "a callback" and not "the callback" because awaited stanzas
+  /// are allowed to bypass the queue.
+  /// Only access while holding the lock [_lock].
+  bool _isRunning = false;
+
+  /// The function to call to process an incoming stream object.
+  final Future<void> Function(XMPPStreamObject) _callback;
+
+  /// Lock guarding both [_queue] and [_isRunning].
+  final Lock _lock = Lock();
+
+  /// Logger.
+  final Logger _log = Logger('IncomingStanzaQueue');
+
+  final StanzaAwaiter _stanzaAwaiter;
+
+  Future<void> _processStreamObject(
+    Future<void>? future,
+    XMPPStreamObject object,
+  ) async {
+    if (future == null) {
+      if (object is XMPPStreamElement) {
+        _log.finest(
+          'Bypassing queue for ${object.node.tag} (${object.node.attributes["id"]})',
+        );
+      }
+      return _callback(object);
+    }
+
+    // Wait for our turn.
+    await future;
+
+    // Run the callback.
+    await _callback(object);
+
+    // Run the next entry.
+    await _lock.synchronized(() {
+      if (_queue.isNotEmpty) {
+        _queue.removeFirst().complete();
+      } else {
+        _isRunning = false;
+      }
+    });
+  }
+
+  Future<void> addStanza(List<XMPPStreamObject> objects) async {
+    await _lock.synchronized(() async {
+      for (final object in objects) {
+        if (await canBypassQueue(object)) {
+          unawaited(
+            _processStreamObject(null, object),
+          );
+          continue;
+        }
+
+        final completer = Completer<void>();
+        if (_isRunning) {
+          _queue.add(completer);
+        } else {
+          _isRunning = true;
+          completer.complete();
+        }
+
+        unawaited(
+          _processStreamObject(completer.future, object),
+        );
+      }
+    });
+  }
+
+  Future<bool> canBypassQueue(XMPPStreamObject object) async {
+    if (object is XMPPStreamHeader) {
+      return false;
+    }
+
+    object as XMPPStreamElement;
+    return _stanzaAwaiter.isAwaited(object.node);
+  }
+}

packages/moxxmpp/lib/src/util/list.dart

@@ -0,0 +1,5 @@
+extension ListItemCountExtension<T> on List<T> {
+  int count(bool Function(T) matches) {
+    return where(matches).length;
+  }
+}

packages/moxxmpp/lib/src/util/queue.dart

@@ -1,37 +1,61 @@
 import 'dart:async';
 import 'dart:collection';
 import 'package:meta/meta.dart';
+import 'package:moxxmpp/src/stanza.dart';
+import 'package:moxxmpp/src/stringxml.dart';
 import 'package:synchronized/synchronized.dart';
 
-/// A job to be submitted to an [AsyncQueue].
+class StanzaQueueEntry {
-typedef AsyncQueueJob = Future<void> Function();
+  const StanzaQueueEntry(
+    this.details,
+    this.completer,
+  );
+
+  /// The actual data to send.
+  final StanzaDetails details;
+
+  /// The [Completer] to resolve when the response is received.
+  final Completer<XMLNode>? completer;
+}
+
+/// A function that is executed when a job is popped from the queue.
+typedef SendStanzaFunction = Future<void> Function(StanzaQueueEntry);
+
+/// A function that is called before popping a queue item. Should return true when
+/// the [SendStanzaFunction] can be executed.
+typedef CanSendCallback = Future<bool> Function();
 
 /// A (hopefully) async-safe queue that attempts to force
 /// in-order execution of its jobs.
-class AsyncQueue {
+class AsyncStanzaQueue {
-  /// The lock for accessing [AsyncQueue._lock] and [AsyncQueue._running].
+  AsyncStanzaQueue(
+    this._sendStanzaFunction,
+    this._canSendCallback,
+  );
+
+  /// The lock for accessing [AsyncStanzaQueue._queue].
   final Lock _lock = Lock();
 
   /// The actual job queue.
-  final Queue<AsyncQueueJob> _queue = Queue<AsyncQueueJob>();
+  final Queue<StanzaQueueEntry> _queue = Queue<StanzaQueueEntry>();
 
-  /// Indicates whether we are currently executing a job.
+  /// Sends the stanza when we can pop from the queue.
-  bool _running = false;
+  final SendStanzaFunction _sendStanzaFunction;
+
+  final CanSendCallback _canSendCallback;
 
   @visibleForTesting
-  Queue<AsyncQueueJob> get queue => _queue;
+  Queue<StanzaQueueEntry> get queue => _queue;
 
-  @visibleForTesting
+  /// Adds a job [entry] to the queue.
-  bool get isRunning => _running;
+  Future<void> enqueueStanza(StanzaQueueEntry entry) async {
+    await _lock.synchronized(() async {
+      _queue.add(entry);
 
-  /// Adds a job [job] to the queue.
+      if (_queue.isNotEmpty && await _canSendCallback()) {
-  Future<void> addJob(AsyncQueueJob job) async {
+        unawaited(
-    await _lock.synchronized(() {
+          _runJob(_queue.removeFirst()),
-      _queue.add(job);
+        );
-
-      if (!_running && _queue.isNotEmpty) {
-        _running = true;
-        unawaited(_popJob());
       }
     });
   }
@@ -40,16 +64,26 @@ class AsyncQueue {
     await _lock.synchronized(_queue.clear);
   }
 
-  Future<void> _popJob() async {
+  Future<void> _runJob(StanzaQueueEntry details) async {
-    final job = _queue.removeFirst();
+    await _sendStanzaFunction(details);
-    final future = job();
+
-    await future;
+    await _lock.synchronized(() async {
+      if (_queue.isNotEmpty && await _canSendCallback()) {
+        unawaited(
+          _runJob(_queue.removeFirst()),
+        );
+      }
+    });
+  }
+
+  Future<void> restart() async {
+    if (!(await _canSendCallback())) return;
 
     await _lock.synchronized(() {
       if (_queue.isNotEmpty) {
-        unawaited(_popJob());
+        unawaited(
-      } else {
+          _runJob(_queue.removeFirst()),
-        _running = false;
+        );
       }
     });
   }

packages/moxxmpp/lib/src/util/typed_map.dart

@@ -0,0 +1,25 @@
+/// A map, similar to Map, but always uses the type of the value as the key.
+class TypedMap<B> {
+  /// Create an empty typed map.
+  TypedMap();
+
+  /// Create a typed map from a list of values.
+  TypedMap.fromList(List<B> items) {
+    for (final item in items) {
+      _data[item.runtimeType] = item;
+    }
+  }
+
+  /// The internal mapping of type -> data
+  final Map<Object, B> _data = {};
+
+  /// Associate the type of [value] with [value] in the map.
+  void set<T extends B>(T value) {
+    _data[T] = value;
+  }
+
+  /// Return the object of type [T] from the map, if it has been stored.
+  T? get<T>() => _data[T] as T?;
+
+  Iterable<Object> get keys => _data.keys;
+}

packages/moxxmpp/lib/src/xeps/staging/extensible_file_thumbnails.dart

@@ -1,57 +0,0 @@
-import 'package:moxxmpp/src/stringxml.dart';
-
-/// NOTE: Specified by https://codeberg.org/moxxy/custom-xeps/src/branch/master/xep-xxxx-extensible-file-thumbnails.md
-
-const fileThumbnailsXmlns = 'proto:urn:xmpp:eft:0';
-const blurhashThumbnailType = '$fileThumbnailsXmlns:blurhash';
-
-abstract class Thumbnail {}
-
-class BlurhashThumbnail extends Thumbnail {
-  BlurhashThumbnail(this.hash);
-  final String hash;
-}
-
-Thumbnail? parseFileThumbnailElement(XMLNode node) {
-  assert(
-    node.attributes['xmlns'] == fileThumbnailsXmlns,
-    'Invalid element xmlns',
-  );
-  assert(node.tag == 'file-thumbnail', 'Invalid element name');
-
-  switch (node.attributes['type']!) {
-    case blurhashThumbnailType:
-      {
-        final hash = node.firstTag('blurhash')!.innerText();
-        return BlurhashThumbnail(hash);
-      }
-  }
-
-  return null;
-}
-
-XMLNode? _fromThumbnail(Thumbnail thumbnail) {
-  if (thumbnail is BlurhashThumbnail) {
-    return XMLNode(
-      tag: 'blurhash',
-      text: thumbnail.hash,
-    );
-  }
-
-  return null;
-}
-
-XMLNode constructFileThumbnailElement(Thumbnail thumbnail) {
-  final node = _fromThumbnail(thumbnail)!;
-  var type = '';
-  if (thumbnail is BlurhashThumbnail) {
-    type = blurhashThumbnailType;
-  }
-
-  return XMLNode.xmlns(
-    tag: 'file-thumbnail',
-    xmlns: fileThumbnailsXmlns,
-    attributes: {'type': type},
-    children: [node],
-  );
-}

packages/moxxmpp/lib/src/xeps/staging/file_upload_notification.dart

@@ -2,14 +2,70 @@ import 'package:moxxmpp/src/managers/base.dart';
 import 'package:moxxmpp/src/managers/data.dart';
 import 'package:moxxmpp/src/managers/handlers.dart';
 import 'package:moxxmpp/src/managers/namespaces.dart';
+import 'package:moxxmpp/src/message.dart';
 import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/stanza.dart';
+import 'package:moxxmpp/src/stringxml.dart';
+import 'package:moxxmpp/src/util/typed_map.dart';
 import 'package:moxxmpp/src/xeps/xep_0446.dart';
 
 /// NOTE: Specified by https://github.com/PapaTutuWawa/custom-xeps/blob/master/xep-xxxx-file-upload-notifications.md
-
 const fileUploadNotificationXmlns = 'proto:urn:xmpp:fun:0';
 
+/// Indicates a file upload notification.
+class FileUploadNotificationData implements StanzaHandlerExtension {
+  const FileUploadNotificationData(this.metadata);
+
+  /// The file metadata indicated in the upload notification.
+  final FileMetadataData metadata;
+
+  XMLNode toXML() {
+    return XMLNode.xmlns(
+      tag: 'file-upload',
+      xmlns: fileUploadNotificationXmlns,
+      children: [
+        metadata.toXML(),
+      ],
+    );
+  }
+}
+
+/// Indicates that a file upload has been cancelled.
+class FileUploadNotificationCancellationData implements StanzaHandlerExtension {
+  const FileUploadNotificationCancellationData(this.id);
+
+  /// The id of the upload notifiaction that is cancelled.
+  final String id;
+
+  XMLNode toXML() {
+    return XMLNode.xmlns(
+      tag: 'cancelled',
+      xmlns: fileUploadNotificationXmlns,
+      attributes: {
+        'id': id,
+      },
+    );
+  }
+}
+
+/// Indicates that a file upload has been completed.
+class FileUploadNotificationReplacementData implements StanzaHandlerExtension {
+  const FileUploadNotificationReplacementData(this.id);
+
+  /// The id of the upload notifiaction that is replaced.
+  final String id;
+
+  XMLNode toXML() {
+    return XMLNode.xmlns(
+      tag: 'replaces',
+      xmlns: fileUploadNotificationXmlns,
+      attributes: {
+        'id': id,
+      },
+    );
+  }
+}
+
 class FileUploadNotificationManager extends XmppManagerBase {
   FileUploadNotificationManager() : super(fileUploadNotificationManager);
 
@@ -47,11 +103,14 @@ class FileUploadNotificationManager extends XmppManagerBase {
   ) async {
     final funElement =
         message.firstTag('file-upload', xmlns: fileUploadNotificationXmlns)!;
-    return state.copyWith(
+    return state
-      fun: FileMetadataData.fromXML(
+      ..extensions.set(
-        funElement.firstTag('file', xmlns: fileMetadataXmlns)!,
+        FileUploadNotificationData(
-      ),
+          FileMetadataData.fromXML(
-    );
+            funElement.firstTag('file', xmlns: fileMetadataXmlns)!,
+          ),
+        ),
+      );
   }
 
   Future<StanzaHandlerData> _onFileUploadNotificationReplacementReceived(
@@ -60,9 +119,12 @@ class FileUploadNotificationManager extends XmppManagerBase {
   ) async {
     final element =
         message.firstTag('replaces', xmlns: fileUploadNotificationXmlns)!;
-    return state.copyWith(
+    return state
-      funReplacement: element.attributes['id']! as String,
+      ..extensions.set(
-    );
+        FileUploadNotificationReplacementData(
+          element.attributes['id']! as String,
+        ),
+      );
   }
 
   Future<StanzaHandlerData> _onFileUploadNotificationCancellationReceived(
@@ -71,8 +133,42 @@ class FileUploadNotificationManager extends XmppManagerBase {
   ) async {
     final element =
         message.firstTag('cancels', xmlns: fileUploadNotificationXmlns)!;
-    return state.copyWith(
+    return state
-      funCancellation: element.attributes['id']! as String,
+      ..extensions.set(
-    );
+        FileUploadNotificationCancellationData(
+          element.attributes['id']! as String,
+        ),
+      );
+  }
+
+  List<XMLNode> _messageSendingCallback(
+    TypedMap<StanzaHandlerExtension> extensions,
+  ) {
+    final fun = extensions.get<FileUploadNotificationData>();
+    if (fun != null) {
+      return [fun.toXML()];
+    }
+
+    final cancel = extensions.get<FileUploadNotificationCancellationData>();
+    if (cancel != null) {
+      return [cancel.toXML()];
+    }
+
+    final replace = extensions.get<FileUploadNotificationReplacementData>();
+    if (replace != null) {
+      return [replace.toXML()];
+    }
+
+    return [];
+  }
+
+  @override
+  Future<void> postRegisterCallback() async {
+    await super.postRegisterCallback();
+
+    // Register the sending callback
+    getAttributes()
+        .getManagerById<MessageManager>(messageManager)
+        ?.registerMessageSendingCallback(_messageSendingCallback);
   }
 }