Mostly remove the helper utils. The server is required to present the
client with a consisent state of the block list and corresponding
modifications, so we should not end up with duplicate entires if we
don't check for them.
SMACK-731
allow multiple of them to be installed, instead of at most one. Fixes
deadlock in LowLevelRosterIntegration test because
IoTProvisioningManager's SubscribeListener would not come up with a
decission.
Smack's previous entity caps implementation assumed that an entity lost
its entity caps feature as soon as a presence without caps from that
entity was received. But according to XEP-0115 § 8.4, this is a
perfectly normal optimization technique. We now reset the caps state
after an available presence becomes unavailable.
Also introduce PresenceEventListener, which is required for this
feature.
Also make Roster.preApprove() take a BareJid as argument.
Fixes SMACK-723.
Some servers respond to disco#info requests with
<iq id='npGtO-21' type='result' to='phone@xxx/MAXS' from='xxx'>
<query xmlns='http://jabber.org/protocol/disco#info'>
<identity type='pep' name='Prosody' category='pubsub'/>
<identity type='im' name='Prosody' category='server'/>
<feature var='urn:xmpp:blocking'/>
<feature var='urn:xmpp:carbons:2'/>
<feature var='urn:xmpp:carbons:1'/>
<feature var='vcard-temp'/>
<feature var='http://jabber.org/protocol/commands'/>
<feature var='urn:xmpp:mam:0'/>
<feature var='jabber:iq:private'/>
<feature var='http://jabber.org/protocol/pubsub#publish'/>
<feature var='http://jabber.org/protocol/disco#info'/>
<feature var='http://jabber.org/protocol/disco#items'/>
<feature var='urn:xmpp:ping'/>
<feature var='msgoffline'/>
<feature var='jabber:iq:roster'/>
<feature var='urn:xmpp:archive:auto'/>
<feature var='urn:xmpp:archive:manage'/>
<feature var='urn:xmpp:archive:pref'/>
<feature var='http://jabber.org/protocol/rsm'/>
<feature xmlns='urn:xmpp:archive'><optional><default/></optional></feature>
</query></iq>
Note the
<feature
xmlns='urn:xmpp:archive'><optional><default/></optional></feature>
which will cause the current parser implementation to parse it as
DiscoInfo Feature resulting in an Exception because some attributes are
missing.
This commit prevents this.
