send error to stderr if another instance of

gajim is running on the same ft port

src/common/connection.py

@@ -493,7 +493,6 @@ class Connection:
 			self.disconnect_transfer(file_props)
 			file_props['error'] = -3
 			self.dispatch('FILE_REQUEST_ERROR', (to, file_props))
-			
 		
 	def _bytestreamResultCB(self, con, iq_obj):
 		gajim.log.debug('_bytestreamResultCB')
@@ -592,6 +591,8 @@ class Connection:
 		self.files_props = {}
 	
 	def remove_transfer(self, file_props, remove_from_list = True):
+		if file_props is None:
+			return
 		if file_props.has_key('hash'):
 			gajim.socks5queue.remove_sender(file_props['hash'])
 		
@@ -608,6 +609,8 @@ class Connection:
 				del(self.files_props['sid'])
 				
 	def disconnect_transfer(self, file_props):
+		if file_props is None:
+			return
 		if file_props.has_key('hash'):
 			gajim.socks5queue.remove_sender(file_props['hash'])
 		
@@ -750,7 +753,10 @@ class Connection:
 		listener = gajim.socks5queue.start_listener(self.peerhost[0], port, 
 			sha_str, self.result_socks5_sid, file_props['sid'])
 		if listener == None:
-			# FIXME - raise error dialog that address is in use
+			file_props['error'] = -5
+			self.dispatch('FILE_REQUEST_ERROR', (str(receiver), file_props))
+			self._connect_error(str(receiver), file_props['sid'], 
+				code = 406)
 			return
 		
 		iq = common.xmpp.Protocol(name = 'iq', to = str(receiver), 

src/common/socks5.py

@@ -49,6 +49,12 @@ class SocksQueue:
 			self.listener = Socks5Listener(host, port)
 			self.listener.bind()
 			if self.listener.started is False:
+				self.listener = None
+				import sys
+				sys.stderr.write('\n\n\n========================================\
+========================\nUnable to bind to port %s. \nMaybe you have another \
+running instance of Gajim. \nFile Transfer will be canceled.\n==================\
+==============================================\n\n\n' % port)
 				return None
 			self.connected += 1
 		return self.listener
@@ -82,6 +88,7 @@ class SocksQueue:
 			file_props = self.files_props[account][sid]
 		file_props['success_cb'] = on_success
 		file_props['failure_cb'] = on_failure
+		
 		# add streamhosts to the queue 
 		for streamhost in file_props['streamhosts']:
 			receiver = Socks5Receiver(streamhost, sid, file_props)
@@ -123,12 +130,9 @@ class SocksQueue:
 		result = sock5_receiver.connect()
 		self.connected += 1
 		if result != None:
-			self.connected += 1
 			result = sock5_receiver.main()
 			self.process_result(result, sock5_receiver)
-			
 			return 1
-			
 		return None
 		
 	def get_file_from_sender(self, file_props, account):

src/gajim.py

@@ -715,7 +715,7 @@ class Interface:
 		ft.set_status(file_props['type'], file_props['sid'], 'stop')
 		if gajim.config.get('notify_on_new_message'):
 			# check if we should be notified
-			if errno == -4:
+			if errno == -4 or errno == -5:
 				msg_type = 'file-error'
 			else:
 				msg_type = 'file-request-error'
@@ -725,7 +725,7 @@ class Interface:
 		elif (gajim.connections[account].connected in (2, 3)
 			and gajim.config.get('autopopup')) or \
 			gajim.config.get('autopopupaway'):
-			if errno == -4:
+			if errno == -4 or errno == -5:
 				self.windows['file_transfers'].show_stopped(jid, file_props)
 			else:
 				self.windows['file_transfers'].show_request_error(file_props)