twisted: not doing DNS resolutions?
spam.csubich+block at block.subich.spam.com
Thu Jun 30 09:36:13 CEST 2005
I'm building an application that makes several user-specified internet
connections; twisted meets my needs more or less perfectly.
I'm running into a problem, however, in that twisted is not allowing
connections (reactor.connectTCP) by hostname, only IP address. [read:
connections to IP addresses work fine, hostnames no]
From what I can tell, the problem lies in that Twisted simply isn't
performing the DNS resolutions. From the connection factory's
startedConnecting method, print connector.getDestination() results in:
IPv4Address(TCP, 'hostname', port)
That is to say, the port is correct, but the 'hostname' is completely
unresolved. Since 'hostname' is a really bad IP address, not being one
at all, the connection of course fails. A check via tcpdump on my
gateway machine shows that the DNS resolution doesn't occur.
The API documentation for version 1.3 (I'm using 2.0.1, but a quick
check of twisted source/docstrings shows this to be still true) shows
that connectTCP taks "a host name," so by that (and the echo client
example that connects to 'localhost') I presume there's supposed to be
some sort of resolution going on.
I'm running twisted 2.0.1 on win32. Is this a bug in twisted, or is
there some configuration that I've gone and borked?
 -- is there some reason in particular that there's no API reference
for twisted 2.0x? The documentation/tutorials are pretty sparse as-is, I
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