util.startup: Fix exiting on pidfile trouble
prosody.shutdown() relies on prosody.main_thread, which has not been set
yet at this point.
Doing a clean shutdown might actually be harmful in case it tears down
things set up by the conflicting Prosody, such as the very pidfile we
were looking at.
Thanks again SigmaTel71 for noticing
# server supports contact subscription pre-approval (RFC 6121 3.4)
[Client] Alice
jid: preappove-a@localhost
password: password
[Client] Bob
jid: preapprove-b@localhost
password: password
---------
Alice connects
Alice sends:
<presence/>
Alice receives:
<presence/>
Alice sends:
<presence to="${Bob's JID}" type="subscribed"/>
Bob connects
Bob sends:
<iq type="get" id="roster1">
<query xmlns="jabber:iq:roster"/>
</iq>
Bob receives:
<iq type="result" id="roster1">
<query xmlns="jabber:iq:roster" ver="{scansion:any}">
</query>
</iq>
Bob sends:
<presence/>
Bob receives:
<presence from="${Bob's full JID}"/>
Bob sends:
<presence to="${Alice's JID}" type="subscribe" />
Bob receives:
<iq type='set' id='{scansion:any}'>
<query ver='1' xmlns='jabber:iq:roster'>
<item jid="${Alice's JID}" subscription='none' ask='subscribe' />
</query>
</iq>
Bob receives:
<presence from="${Alice's JID}" type="subscribed" />
Bob disconnects
Alice sends:
<iq type="get" id="roster1">
<query xmlns="jabber:iq:roster"/>
</iq>
Alice receives:
<iq type="result" id="roster1">
<query xmlns="jabber:iq:roster" ver="{scansion:any}">
<item jid="${Bob's JID}" subscription="from" />
</query>
</iq>
Alice disconnects
Bob disconnects