#44553 [Opn->Csd]: curl_multi does not processing multiple cURL handles in parallel with SOCKS5

ID: 44553 User updated by: administrator at gesoft dot org Reported By: administrator at gesoft dot org -Status: Open +Status: Closed Bug Type: cURL related Operating System: FreeBSD 6.1 PHP Version: 5.2.5 New Comment: Daniel Stenberg <daniel_at_haxx.se> wrote: "This is a known libcurl bug mentioned in docs/KNOWN_BUGS:" http://curl.haxx.se/docs/knownbugs.html "35. Both SOCKS5 and SOCKS4 proxy connections are done blocking, which is very bad when used with the multi interface." Previous Comments: ------------------------------------------------------------------------ [2008-03-27 16:17:39] administrator at gesoft dot org Description: ------------ curl_multi does not processing multiple cURL handles in parallel when SOCKS type proxies are used. This could be easily determined by checking the spent time or by using any NET software to check amount of opened connections for particular process (you will see that curl_multi opens one or max two connections at a time) Reproduce code: --------------- $mh = curl_multi_init(); foreach ($servers as $server) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'http://google.com'); curl_setopt($ch, CURLOPT_TIMEOUT, 5); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_ENCODING, ''); curl_setopt($ch, CURLOPT_PROXY, trim($server)); curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); curl_multi_add_handle($mh, $ch); } $microTime = GetMicroTime(); do { do { } while (curl_multi_exec($mh, $stillRunning) === CURLM_CALL_MULTI_PERFORM); } while ($stillRunning); $timeSpend = GetMicroTime() - $microTime; echo sprintf('%01.4f', $timeSpend); Expected result: ---------------- The maximum spent time should be ~5 sec. Actual result: -------------- While the actual value vary from 20 till 35 sec. p.s. If you will use simple HTTP type proxies the result will be as expected ~5 sec. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=44553&edit=1