I hope that this will fix the loop when the IRC is disconnected

irc.py

@@ -57,7 +57,10 @@ class IRC(object):
         self._send("QUIT :Bye bye")
         logging.debug("STOP: sent QUIT message")
         self.running = False
-        self._handler.join()
+        try:
+            self._handler.join()
+        except RuntimeError:
+            logging.error("STOP: Cannot join handler")
         logging.debug("STOP: thread has terminated")
         self._socket.close()
         logging.debug("STOP: socket close")
@@ -113,6 +116,8 @@ class IRC(object):
         while self.running:
             # Get incoming messages
             data = self._socket.recv(4096).decode()
+            if data.__len__() == 0:
+                self.stop()
 
             # Split multiple lines
             for m in data.split('\r\n'):