Quoth Christoph Zwerschke <c...@online.de>:
> What actually happens is the following:
>
> * BaseHTTPServer binds only to the IPv4 address of localhost, because
> it's based on TCPServer which has address_family=AF_INET by default.
>
> * HTTPConnection.connect() however tries to connect to all IP addresses
> of localhost, in the order determined socket.getaddrinfo('localhost').
>
> With Py 2.3 (without IPv6 support) this is only the IPv4 address,
> but with Py 2.4-2.6 the order is (on my Win XP host) the IPv6 address
> first, then the IPv4 address. Since the IPv6 address is checked first,
> this gives a timeout and causes the slow connect() call. The order by
> which getaddrinfo returns IPv4/v6 under Linux seems to vary depending
> on the glibc version, so it may be a problem on other platforms, too.
Based on something I read in another thread, this appears to be a problem
only under Windows. Everybody else implemented the TCP/IP stack according
to spec, and the IPV6 connect attempt times out immediately, producing
no slowdown.
Microsoft, however....
--RDM
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