core: fixed component connexion:

presence announcement has been moved to startConnection, but component don't have presence. This patch fixes it by moving presence announcement to clients only.

sat/core/xmpp.py

@@ -222,9 +222,6 @@ class SatXMPPEntity(object):
         )  # FIXME: we should have a timeout here, and a way to know if a plugin freeze
         # TODO: mesure launch time of each plugin
 
-        # we finally send our presence
-        entity.presence.available()
-
     def _disconnectionCb(self, __):
         self._connected_d = None
 
@@ -748,6 +745,14 @@ class SatXMPPClient(SatXMPPEntity, wokkel_client.XMPPClient):
         self.presence = SatPresenceProtocol(self.host_app)
         self.presence.setHandlerParent(self)
 
+    @classmethod
+    @defer.inlineCallbacks
+    def startConnection(cls, host, profile, max_retries):
+        yield super(SatXMPPClient, cls).startConnection(host, profile, max_retries)
+        entity = host.profiles[profile]
+        # we finally send our presence
+        entity.presence.available()
+
     def entityConnected(self):
         # we want to be sure that we got the roster
         return self.roster.got_roster