-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Michael Foord wrote: > Victor Stinner wrote: >> Hi, >> >> Le Wednesday 14 January 2009 12:23:46 Kristján Valur Jónsson, vous avez >> écrit : >> >>> socket.create_connection() trying to connect to ("localhost", port) >>> (...) >>> return an AF_INET6 entry before the AF_INET one and try connection >>> to that. This connect() attemt fails after approximately one second, >>> after which we proceed to do an immediately successful connect() call >>> to the AF_INET address. >>> >> This is the normal behaviour of dual stack (IPv4+IPv6): IPv6 is tried before >> IPv4. SocketServer uses AF_INET by default, so the "IPv6 port" is closed on >> your host. Why does it take so long to try to connect to the IPv6 port? On >> Linux, it's immediate: >> ---- >> $ time nc6 ::1 8080 >> nc6: unable to connect to address ::1, service 8080 >> >> real 0m0.023s >> user 0m0.000s >> sys 0m0.008s >> ---- >> >> On my host (Ubuntu Gutsy), "localhost" name has only an IPv4 address. The >> address "::1" is "ip6-localhost" or "ip6-loopback". >> >> You should check why the connect() to IPv6 is so long to raise an error. >> About >> the test: since SocketServer address family is constant (IPv4), you can >> force >> IPv4 for the client. >> >> > This is something of a bugbear on Vista in general. Doing local > web-development with localhost can be really painful until you realise > that switching to 127.0.0.1 solves the problem...
It barfs on Macs as well: indeed, it is worse, because the connection just fails there, rather than trying IPv6 and then falling back to IPv4. For instance, tunneling a connection over SSH to a Mac box via '-L 9999:localhost:9999' will fail to connect at all, unless the server is listening on IPv6. Tres. - -- =================================================================== Tres Seaver +1 540-429-0999 tsea...@palladion.com Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJbgo9+gerLs4ltQ4RAvK9AKCfWhQx7ntw+sUNK7FCPU+Kb9jp5QCdEqCu 9BXvzTgBKipSCtA3SdydqjI= =tYDj -----END PGP SIGNATURE----- _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com