Corrected return values of zeroconf client in order to return true-evaluable values. related to #4051

src/common/zeroconf/client_zeroconf.py

@@ -703,7 +703,7 @@ class ClientZeroconf:
 			if conn.add_stanza(stanza, is_message):
 				if on_ok:
 					on_ok()
-				return 0
+				return id
 
 		if item['address'] in self.ip_to_hash:
 			hash = self.ip_to_hash[item['address']]
@@ -714,7 +714,7 @@ class ClientZeroconf:
 				if conn.add_stanza(stanza, is_message):
 					if on_ok:
 						on_ok()
-					return 0
+					return id
 
 		# otherwise open new connection
 		stanza.setID('zero')

src/common/zeroconf/connection_zeroconf.py

@@ -462,6 +462,7 @@ class ConnectionZeroconf(ConnectionHandlersZeroconf):
 		if ret == -1:
 			# Contact Offline
 			self.dispatch('MSGERROR', [jid, '-1', _('Contact is offline. Your message could not be sent.'), None, None, session])
+		return ret
 
 	def send_stanza(self, stanza):
 		# send a stanza untouched