send keepalive every minute

src/common/connection.py

@@ -624,9 +624,10 @@ class Connection:
 				self.myVCardID.append(iq.getID())
 		elif (status == 'offline') and self.connected:
 			self.connected = 0
-			self.connection.send(common.xmpp.Presence(typ = 'unavailable',
-				status = msg))
-			self.connection.disconnect()
+			if self.connection:
+				self.connection.send(common.xmpp.Presence(typ = 'unavailable',
+					status = msg))
+				self.connection.disconnect()
 			self.dispatch('STATUS', 'offline')
 			self.connection = None
 		elif status != 'offline' and self.connected:

src/common/xmpp/dispatcher.py

@@ -35,6 +35,7 @@ class Dispatcher(PlugIn):
         PlugIn.__init__(self)
         DBG_LINE='dispatcher'
         self.handlers={}
+        self._lastIncome = time.time()
         self._expected={}
         self._defaultHandler=None
         self._eventHandler=None
@@ -99,10 +100,16 @@ class Dispatcher(PlugIn):
             1) length of processed data if some data were processed;
             2) '0' string if no data were processed but link is alive;
             3) 0 (zero) if underlying connection is closed."""
+        if time.time() > self._lastIncome + 60: #1 min
+            iq = Iq('get', NS_LAST, to=self._owner.Server)
+            self.send(iq)
+        if time.time() > self._lastIncome + 90: #1 min + 30 sec pr rep
+            self.disconnected()
         for handler in self._cycleHandlers: handler(self)
         if self._owner.Connection.pending_data(timeout):
             data=self._owner.Connection.receive()
             self.Stream.Parse(data)
+            self._lastIncome = time.time()
             return len(data)
         return '0'      # It means that nothing is received but link is alive.