[XML-SIG] 20 second socket.addrinfo() delay in SimpleXMLRPCServer
"Martin v. L÷wis"
Fri, 03 Jan 2003 16:01:45 +0100
Mark Bucciarelli wrote:
> 3035: handle_request: request received (Version = 2)
> 3035: GETHOSTBYNAMEv6 (localhost)
> 3035: Haven't found "6c6f:6361:6c68:6f73:7400:0:fa98:153e" in hosts cache!
Can you (or anybody else) explain these messages? It is not surprising
that it tries an IPv6 lookup for localhost - this is, after all, the
entire point of using getaddrinfo instead of plain gethostbyname.
I'm surprised that it infers "6c6f:6361:6c68:6f73:7400:0:fa98:153e",
though? Have you configured IPv6 interfaces for your system? Doing
reveals that something is seriously broken in namelookup: It somehow
tries to interpret the byte string "localhost" (plus whatever data it
then has in memory) as an IPv6 packed binary address?????
That looks like a bug in the system's C library to me. It could be a bug
in Python, also, but given that nscd correctly traces the request made
to it, and given that nobody else has reported problems, I'd infer an
nscd bug, or a bug in the nscd client code in the C library.
I would use glibcbug to report those nscd trace messages. Perhaps this
is just a bug in the trace code, which would be harmless.