curl-and-python

Re: pycurl initialization while offline fails

From: <ghazel_at_gmail.com>
Date: Tue, 27 Jun 2006 00:25:24 -0700

I worked my way through openssl, c-ares and libcurl compilation, but I
can't find a way to compile libidn in windows, so I can't get pycurl
compilation started. Any advice?

-Greg

On 6/26/06, Daniel Stenberg <daniel_at_haxx.se> wrote:
> On Mon, 26 Jun 2006, ghazel_at_gmail.com wrote:
>
> > I'm certainly willing to spend a little time digging in to fixing it, can
> > you point me in the right direction?
>
> Certainly! (Cc'ing the libcurl and c-ares lists as well, so you for you guys:
> I'm replying to an original mail posted on the curl-and-python list.)
>
> The problem is (on Windows) that c-ares returns a failure to init when there's
> no DNS server found. Since c-ares is a DNS resolver it could be seen like a
> proper return code since it can't DNS resolve without a DNS server. It could
> however still resolve hosts using the hosts file so this error is probably
> subject to get fixed...
>
> libcurl takes that init failure (Curl_open() in lib/url.c) as a fatal error
> and returns an error code from the the curl_easy_init() function and no more
> fun is to be had...
>
> I believe a better way to deal with the c-ares failure is to keep information
> about this lack of currently working c-ares and retry the init on all
> subsequent requests to actually resolve host names and if it fails again at
> that point, simply act as with other resolve failures. It should still work
> fine with numerical addresses (and hosts-based names once c-ares is fixed to
> do that).
>
> I hope this sheds some light to the problems involved.
>
> --
> Commercial curl and libcurl Technical Support: http://haxx.se/curl.html
> _______________________________________________
> http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-python
>
_______________________________________________
http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-python
Received on 2006-06-27