- sock = socket.socket()
- sock.bind(('0.0.0.0', 0))
- port = sock.getsockname()[1]
- sock.close()
- return port
+ global _already_used_port
+ while True:
+ sock = socket.socket()
+ sock.bind(('0.0.0.0', 0))
+ port = sock.getsockname()[1]
+ sock.close()
+ if port not in _already_used_port:
+ _already_used_port[port] = True
+ return port