STINNER Victor added the comment: Do you have a firewall? Maybe the firewall blocks programs listening on sockets? It would be silly, the socket is only listening on 127.0.0.1 (local link) (or ::1 in IPv6, also local link).
Extract of the socketpair() function: try: csock.connect((addr, port)) except (BlockingIOError, InterruptedError): pass Can you please try to replace this code with: try: csock.connect((addr, port)) except (BlockingIOError, InterruptedError) as exc: print("CONNECT ERROR! %r" % (exc,)) You can copy socket.py from the Python standard library to the current directory and modify the local copy. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26520> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com