On Mon, 10 Jan 2011, Vsevolod Novikov wrote:

Please don't top-post!

> I've made a decision to freeze trying to plug custom async resolver into the
> CURL, just because the CURL doesn't allow me to catch canceling and/or
> destroying resolving contexts on the easy handle. There is a work around to
> avoid using resolver inside a CURL.

Feel free to suggest or even provide improvements. As we already offer
threaded resolvers using win32 or pthreads successfully it is a bit surprising
to me that it can't be done.

> Now almost stable port is made basing on CURL v.7.21.2. Using the CURL
> v.7.21.3 leads to infinite connection loose after some number of successful
> requests.

So again, if this really is a libcurl bug then you should be able to provide a
recipe that we can use to repeat the problem in our ends. I will be happy to
work on hunting it down once you provide an example showing me how to repeat
it.

> Really the bug, described before, (leading to segmentation fault) happens
> only with custom async resolver.

Right, but as you haven't shown us any code and we probably don't even know
the custom resolver you talk of, I don't think there's any evidence to point
fingers and say that this is a libcurl bug.

> I've made several tests and found, that trying to return resolving results
> in asynchronous manner outside of the Curl_getaddrinfo() using
> Curl_addrinfo_callback() at any point leads to stable reproducing of the
> bug, independently on resolving algorithm itself. Moreover, I've found that
> the example using async resolver works unstable (infinite connection loose)
> even when it is not failed immediately after the start, f.e. on the Android
> host.

Please provide us with the sample code that causes problems when used with
libcurl built to use the threaded resolver!

Also, I know lots of people already use the "stock" libcurl perfectly fine on
Android which indicates it isn't a generic problem on that platform.

-- 
  / daniel.haxx.se
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