Hi,

FTP over SSL does not work with curl 7.21.0 and 7.20.1 when using the
multi interface. It kind of crashes during ssl negotiation.

The following code should reproduce the problem:

int main(int argc, char ** argv)
{
   int running;
   CURL* hnd = curl_easy_init();
   CURLM* multi = curl_multi_init();

   curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
   curl_easy_setopt(hnd, CURLOPT_URL, "ftp://wtest.uni-rostock.de/");
   curl_easy_setopt(hnd, CURLOPT_FTP_SSL, CURLFTPSSL_ALL);

   curl_multi_add_handle(multi, hnd);
   do
   {
     curl_multi_perform(multi, &running);
   } while (running > 0);

   curl_easy_cleanup(hnd);
   curl_multi_cleanup(multi);
}

Which gives the following output:

* About to connect() to wtest.uni-rostock.de port 21 (#0)
* Trying 139.30.8.42... * Connected to wtest.uni-rostock.de
(139.30.8.42) port 21 (#0)
< 220-wtest.uni-rostock.de X2 WS_FTP Server 5.0.5 (3210201760)
< 220-********************************************
< 220-FTP-Zugang zur Aenderung der WWW Seiten
< 220-********************************************
< 220 wtest.uni-rostock.de X2 WS_FTP Server 5.0.5 (3210201760)
> AUTH SSL
< 234 SSL enabled and waiting for negotiation
* successfully set certificate verify locations:
* CAfile: none
   CApath: /etc/ssl/certs/
> USER anonymous
< JFLSU

And then outputs a lot of garbage and loops forever.

Could that possibly have to do something with the change "superfluous
blocking for OpenSSL-based SSL connects and multi interface" in 7.20.1?

Thanks,

Georg
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Received on 2010-07-31