我正在运行一个ejabberd（版本18.3.0）服务器，其中包含以下mod_muc配置：
mod_muc:
host: "conference.@HOST@"
...
default_room_options:
allow_subscription: true
persistent: true
mam: true
我正在尝试从各种客户端访问此服务器上的muc房间（ios使用xmppframework，js使用node-xmpp-client - 手动编写xmpp命令）。客户端只能在连接后发送状态消息时才能接收消息。
但是，如果没有发送状态，我就不会在客户端上收到任何消息（即使订阅成功）。我的理解是， presence 消息不需要接收消息（对于mucsub）。
非常感谢任何帮助！
回应Badlop回复的其他详细信息
我将客户端/服务器上的xml消息与您发布的消息进行了比较。继续使用您使用的user1 / user2示例，我看到user2的订阅成功：
<iq xmlns="jabber:client"
lang="en"
to="rk3@localhost/abcd"
from="tr21@conference.localhost"
type="result" id="D7550060-E2AE-4369-878C-261A02BA48A2">
<subscribe xmlns="urn:xmpp:mucsub:0" nick="rk3n">
<event node="urn:xmpp:mucsub:nodes:messages"/>
<event node="urn:xmpp:mucsub:nodes:presence"/>
</subscribe>
</iq>
此外，来自user2的muc服务查询结果如下：
<iq xmlns="jabber:client"
lang="en"
to="rk3@localhost/abcd"
from="conference.localhost" type="result" id="B28A237A-5D54-4AE2-821A-195272B05A88">
<subscriptions xmlns="urn:xmpp:mucsub:0">
<subscription jid="tr21@conference.localhost"/>
</subscriptions>
</iq>
但是，当我从user1发送groupchat消息时：
<message
from="rk1@localhost" to="tr21@conference.localhost"
type="groupchat">
<body> hi there777hi there778</body>
</message>
User2仍未收到上述消息。
我在ejabberd服务器上打开了日志级别5，可以看到服务器正在尝试将上述消息发送到User2（rk3）。但是，我在服务器上看到此消息的最后一个日志如下（我没有看到任何“在此处发送XML”日志中的消息）。
2018-05-14 16:28:57.808 [debug] <0.646.0>@ejabberd_sm:do_route:656 processing message to bare JID:
#message{
id = <<>>,type = normal,lang = <<>>,
from =
#jid{
user = <<"tr21">>,server = <<"conference.localhost">>,resource = <<>>,
luser = <<"tr21">>,lserver = <<"conference.localhost">>,lresource = <<>>},
to =
#jid{
user = <<"rk3">>,server = <<"localhost">>,resource = <<>>,
luser = <<"rk3">>,lserver = <<"localhost">>,lresource = <<>>},
subject = [],body = [],thread = undefined,
sub_els =
[#ps_event{
items =
#ps_items{
xmlns = <<>>,node = <<"urn:xmpp:mucsub:nodes:messages">>,
items =
[#ps_item{
xmlns = <<>>,id = <<"15241958194312511749">>,
sub_els =
[#message{
id = <<>>,type = groupchat,lang = <<"en">>,
from =
#jid{
user = <<"tr21">>,server = <<"conference.localhost">>,
resource = <<"rk1">>,luser = <<"tr21">>,
lserver = <<"conference.localhost">>,lresource = <<"rk1">>},
to =
#jid{
user = <<"rk3">>,server = <<"localhost">>,resource = <<>>,
luser = <<"rk3">>,lserver = <<"localhost">>,lresource = <<>>},
subject = [],
body = [#text{lang = <<>>,data = <<"hi there777hi there778">>}],
thread = undefined,
sub_els =
[#mam_archived{
by =
#jid{
user = <<"tr21">>,server = <<"conference.localhost">>,
resource = <<>>,luser = <<"tr21">>,
lserver = <<"conference.localhost">>,lresource = <<>>},
id = <<"1526283878998040">>},
#stanza_id{
by =
#jid{
user = <<"tr21">>,server = <<"conference.localhost">>,
resource = <<>>,luser = <<"tr21">>,
lserver = <<"conference.localhost">>,lresource = <<>>},
id = <<"1526283878998040">>}],
meta =
#{ip => {172,17,0,1},
mam_archived => true,stanza_id => 1526283878998040}}],
node = <<>>,publisher = <<>>}],
max_items = undefined,subid = <<>>,retract = undefined},
purge = undefined,subscription = undefined,delete = undefined,
create = undefined,configuration = undefined}],
meta = #{stanza_id => 1526283879010097}}
我可能遗漏了一些非常基本的东西（w.r.t user / nick / muc room等），但不知道是什么。
你能否告诉我你用来创建user1 / user2的步骤，在服务器上注册他们的nicks等（使用ejabberdctl）？
答案 0 :(得分：0)
你是对的。有一些奇怪的东西。所以，我已经尝试过，并为您提供发送和接收的确切节，因此您可以进行比较，也许您会看到相关内容。我的理解是接收消息不需要在线消息（对于mucsub）。
您还可以尝试使用桌面Jabber客户端的XML控制台手动发送这些节，例如Gajim，Psi或Tkabber，这样您就不必为此测试编写代码。
我像你一样配置模块。然后user1加入room2（因此它被创建）。 user2订阅了房间：
<iq to='room2@conference.localhost'
type='set'
id='E6E10350-76CF-40C6-B91B-1EA08C332FC7'>
<subscribe xmlns='urn:xmpp:mucsub:0'
nick='mynick'
password='roompassword'>
<event node='urn:xmpp:mucsub:nodes:messages' />
<event node='urn:xmpp:mucsub:nodes:affiliations' />
<event node='urn:xmpp:mucsub:nodes:subject' />
<event node='urn:xmpp:mucsub:nodes:config' />
</subscribe>
</iq>
<iq xml:lang='es'
to='user2@localhost/tka1'
from='room2@conference.localhost'
type='result'
id='E6E10350-76CF-40C6-B91B-1EA08C332FC7'>
<subscribe nick='mynick'
xmlns='urn:xmpp:mucsub:0'>
<event node='urn:xmpp:mucsub:nodes:messages'/>
<event node='urn:xmpp:mucsub:nodes:affiliations'/>
<event node='urn:xmpp:mucsub:nodes:subject'/>
<event node='urn:xmpp:mucsub:nodes:config'/>
</subscribe>
</iq>
在此之后，user1立即向房间发送消息，user2收到消息，而没有发送任何在线节。
<message to='user2@localhost/tka1'
from='room2@conference.localhost'>
<event xmlns='http://jabber.org/protocol/pubsub#event'>
<items node='urn:xmpp:mucsub:nodes:messages'>
<item id='1625407893684208871'>
<message xml:lang='es'
to='user2@localhost'
from='room2@conference.localhost/user1'
type='groupchat'
id='53:939858'
xmlns='jabber:client'>
<archived by='room2@conference.localhost'
id='1526291787755131'
xmlns='urn:xmpp:mam:tmp'/>
<stanza-id by='room2@conference.localhost'
id='1526291787755131'
xmlns='urn:xmpp:sid:0'/>
<body>hi allll</body>
</message>
</item>
</items>
</event>
</message>
可以肯定的是，user2向MUC服务查询他的订阅列表，MUC返回room2，另一个他也被怀疑：
<iq
to='conference.localhost'
type='get'
id='E6E10350-76CF-40C6-B91B-1EA08C332FC7'>
<subscriptions xmlns='urn:xmpp:mucsub:0' />
</iq>
<iq xml:lang='es'
to='user2@localhost/tka1'
from='conference.localhost'
type='result'
id='E6E10350-76CF-40C6-B91B-1EA08C332FC7'>
<subscriptions xmlns='urn:xmpp:mucsub:0'>
<subscription jid='room2@conference.localhost'/>
<subscription jid='room3@conference.localhost'/>
</subscriptions>
</iq>