Hi Daniel,

> > Yes, so it seems. These are the last few lines my program dumps,
right
> > before it hangs:
> >
> > < 226 Transfer complete.
> > * Connection #3 to host dreamhh01.eur.adobe.com left intact
> > * STATE: DONE => COMPLETED handle 0x4d5c00; (connection #-5000)
> > -------> Remove handle 004E7870, code 0: No error -> Cleanup
> > ============================ HANG ============================
>
> Are all these last messages from within the same curl_multi_perform()
call?

I decorated all the curl_multi_perform() calls in my code. The result
for a hanging program run is as follows:

        curl_multi_perform() START
        -------> Read 16384 bytes from
"d:\Work\NetIO-Test\EasyMultiTest\data\Debug\EasyMultiTest.pch"
        curl_multi_perform() END
        curl_multi_perform() START
        -------> Read 16384 bytes from
"d:\Work\NetIO-Test\EasyMultiTest\data\Debug\EasyMultiTest.pch"
        curl_multi_perform() END
        curl_multi_perform() START
        -------> Closing
"d:\Work\NetIO-Test\EasyMultiTest\data\Debug\EasyMultiTest.pch"
        * STATE: PERFORM => DONE handle 0x4f9dd8; (connection #0)
        * Expire cleared
        * Remembering we are in dir
"testfiles/awurf/EasyMultiTest/data/Debug/"
        < 226 Transfer complete.
        * Connection #0 to host dreamhh01.eur.adobe.com left intact
        * STATE: DONE => COMPLETED handle 0x4f9dd8; (connection #-5000)
        curl_multi_perform() END
        -------> Remove handle 004F9F68, code 0: No error -> Cleanup
        curl_multi_perform() START
        curl_multi_perform() END
        curl_multi_perform() START
        curl_multi_perform() END
        curl_multi_perform() START
        curl_multi_perform() END
        ...etc... etc... etc...

> About the "hang", is that your select() call that sits waiting for
action or
> is it curl_multi_perform() never returning?

None of the above. It's just that the main loop of my program doesn't
exit, because all the trailing curl_multi_perform()'s return 1 for
running_handles. As you see, curl_multi_perform() is called over and
over again at the end of the dump, with a short
curl_multi_timeout()-determined timeout between the calls. But since
running_handles remains 1, the loop is not exited. That's the hange I
observe.

Please refer to the original source code at:
<http://curl.haxx.se/mail/lib-2008-08/0276.html>

Cheers,
Andreas
Received on 2008-08-25