如XEP-045中所述，用户离线后会离开房间。因此，一旦连接通过身份验证，我就会加入会议室。但是，当我尝试发送消息时，我收到此错误消息
<message from='ookay@muc.domain' to='user@domain/Waafi' type='error' xml:lang='en' id='7c2b2f4d-ea8d-4ee5-a346-7b75ed3816b5'><body>hey</body><error code='406' type='modify'><not-acceptable xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/><text xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'>Only occupants are allowed to send messages to the conference</text></error></message><r xmlns='urn:xmpp:sm:3'/>
事件发现，一旦我的连接进行身份验证，我就加入了会议室。
这是我从客户端发送给群组的存在节
SMACK：SENT
<presence to='ookay@muc.domain/923365464749' from='923365464749@domain/Waafi' id='RBrFv-59'><x xmlns='http://jabber.org/protocol/muc'></x><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='6kC47ZU5LmufhT9SAuJ69nCXtQc='/></presence>
SMACK：RECV
<presence from='ookay@muc.domain/923365464749' to='923365464749@domain/Waafi' xml:lang='en' id='RBrFv-59'><c xmlns='http://jabber.org/protocol/caps' hash='sha-1' node='http://www.igniterealtime.org/projects/smack' ver='6kC47ZU5LmufhT9SAuJ69nCXtQc='/><x xmlns='http://jabber.org/protocol/muc#user'><item jid='923365464749@domain/Waafi' affiliation='owner' role='moderator'/><status code='110'/></x></presence><r xmlns='urn:xmpp:sm:3'/>