From e031e6d7603ffc86dd017570ad7a761baee19854 Mon Sep 17 00:00:00 2001
From: "Alexander \"PapaTutuWawa" <papatutuwawa@polynom.me>
Date: Sat, 21 Jan 2023 15:42:00 +0100
Subject: [PATCH] feat: Add cancelReason if recipient likely does not support
 OMEMO:2

---
 packages/moxxmpp/lib/src/xeps/xep_0384/xep_0384.dart | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/packages/moxxmpp/lib/src/xeps/xep_0384/xep_0384.dart b/packages/moxxmpp/lib/src/xeps/xep_0384/xep_0384.dart
index b1c736f..6ea142a 100644
--- a/packages/moxxmpp/lib/src/xeps/xep_0384/xep_0384.dart
+++ b/packages/moxxmpp/lib/src/xeps/xep_0384/xep_0384.dart
@@ -357,6 +357,11 @@ abstract class BaseOmemoManager extends XmppManagerBase {
       other['encryption_error_devices'] = result.deviceEncryptionErrors;
       return state.copyWith(
         other: other,
+        // If we have no device list for toJid, then the contact most likely does not
+        // support OMEMO:2
+        cancelReason: result.jidEncryptionErrors[toJid.toString()] is NoKeyMaterialAvailableException ?
+          OmemoNotSupportedForContactException() :
+          null,
         cancel: true,
       );
     }