mod_posix: Move everything to util.startup
This allows greater control over the order of events.
Notably, the internal ordering between daemonization, initialization of
libunbound and setup of signal handling is sensitive.
libunbound starts a separate thread for processing DNS requests.
If this thread is started before signal handling has been set up, it
will not inherit the signal handlers and instead behave as it would have
before signal handlers were set up, i.e. cause the whole process to
immediately exit.
libunbound is usually initialized on the first DNS request, usually
triggered by an outgoing s2s connection attempt.
If daemonization happens before signals have been set up, signals may
not be processed at all.
# Issue 978: MUC does not carry error into occupant leave status (multiple clients)
[Client] Romeo
jid: user@localhost
password: password
[Client] Juliet
jid: user2@localhost
password: password
[Client] Juliet's phone
jid: user2@localhost
password: password
-----
Romeo connects
Romeo sends:
<presence to="room@conference.localhost/Romeo">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Romeo receives:
<presence from='room@conference.localhost/Romeo'>
<x xmlns='http://jabber.org/protocol/muc#user' scansion:strict='false'>
<status code='201'/>
<item jid="${Romeo's full JID}" affiliation='owner' role='moderator'/>
<status code='110'/>
</x>
</presence>
Romeo receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
# Submit config form
Romeo sends:
<iq id='config1' to='room@conference.localhost' type='set'>
<query xmlns='http://jabber.org/protocol/muc#owner'>
<x xmlns='jabber:x:data' type='submit'>
<field var='FORM_TYPE'>
<value>http://jabber.org/protocol/muc#roomconfig</value>
</field>
</x>
</query>
</iq>
Romeo receives:
<iq id="config1" from="room@conference.localhost" type="result">
</iq>
# Juliet connects, and joins the room
Juliet connects
Juliet sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Juliet receives:
<presence from="room@conference.localhost/Romeo" />
Juliet receives:
<presence from="room@conference.localhost/Juliet" />
Juliet receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
Romeo receives:
<presence from="room@conference.localhost/Juliet" />
# Juliet's phone connects, and joins the room
Juliet's phone connects
Juliet's phone sends:
<presence to="room@conference.localhost/Juliet">
<x xmlns="http://jabber.org/protocol/muc"/>
</presence>
Juliet's phone receives:
<presence from="room@conference.localhost/Romeo" />
Juliet's phone receives:
<presence from="room@conference.localhost/Juliet" />
Juliet's phone receives:
<message type='groupchat' from='room@conference.localhost'><subject/></message>
Romeo receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user' scansion:strict='false'>
<item affiliation='none' jid="${Juliet's phone's full JID}" role='participant'/>
<item affiliation='none' jid="${Juliet's full JID}" role='participant'/>
</x>
</presence>
# Juliet leaves with an error
Juliet sends:
<presence type='error' to='room@conference.localhost'>
<error type='cancel'>
<service-unavailable xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
<text xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'>Test error</text>
</error>
</presence>
Romeo receives:
<presence from='room@conference.localhost/Juliet'>
<x xmlns='http://jabber.org/protocol/muc#user'>
<item jid="${Juliet's phone's full JID}" affiliation='none' role='participant'/>
</x>
</presence>