Move listening socket initialization methods to __init__()

src/listener.py

@@ -16,10 +16,10 @@ class Listener(threading.Thread):
         self.s = socket.socket(self.family, socket.SOCK_STREAM)
         self.s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         self.s.bind((self.host, self.port))
-
-    def run(self):
         self.s.listen(1)
         self.s.settimeout(1)
+
+    def run(self):
         while True:
             try:
                 conn, addr = self.s.accept()