core: move XMPP keep-alife value to the constants

src/core/constants.py

@@ -37,6 +37,7 @@ class Const(object):
 
     # Protocol
     XMPP_C2S_PORT = 5222
+    XMPP_KEEP_ALIFE = 180
 
 
     ## Parameters ##

src/core/xmpp.py

@@ -65,7 +65,7 @@ class SatXMPPClient(client.XMPPClient):
         """Called after _authd"""
         log.debug(_("XML stream is initialized"))
         self.keep_alife = task.LoopingCall(self.xmlstream.send, " ")  # Needed to avoid disconnection (specially with openfire)
-        self.keep_alife.start(180)
+        self.keep_alife.start(C.XMPP_KEEP_ALIFE)
 
         self.disco = SatDiscoProtocol(self)
         self.disco.setHandlerParent(self)