---
labels:
- 'Stage-Alpha'
summary: 'XEP-0405: Participant Server Requirements'
...

Introduction
============

This module implements [XEP-0405: Participant Server Requirements](https://xmpp.org/extensions/xep-0405.html).
It allows MIX clients to join and leave MIX channels on other servers, while
also distributing messages to those clients.

Install and enable it like any other module. It has no configuration.

Compatibility
=============

This module currently requires the following patch to be applied to
mod_roster.lua:

``` {.patch}
# HG changeset patch
# User Alexander "PapaTutuWawa" <papatutuwawa@polynom.me>
# Date 1620730362 -7200
#      Tue May 11 12:52:42 2021 +0200
# Node ID 8ea24ca499db1865b754e5c5dffcdc84a9ce7737
# Parent  30feeb4d9d0b51f968c16b205137c114e62047b9
mod_roster: Add event for roster get queries

diff -r 30feeb4d9d0b -r 8ea24ca499db plugins/mod_roster.lua
--- a/plugins/mod_roster.lua	Fri May 07 16:47:58 2021 +0200
+++ b/plugins/mod_roster.lua	Tue May 11 12:52:42 2021 +0200
@@ -57,6 +57,7 @@
 			end
 			roster.tags[1].attr.ver = server_ver;
 		end
+		module:fire_event("roster-get", { session = session, stanza = stanza, reply = roster });
 		session.send(roster);
 		session.interested = true; -- resource is interested in roster updates
 	else -- stanza.attr.type == "set"
```

  ----- ----------------------
  trunk Untested (needs patch)
  0.11  Works (needs patch)
  ----- ----------------------