Bug #68211 [NEW]: New value for CURLOPT_PROXY is ignored, old value is re-used

From: francois dot bonzon at gmail dot com Operating system: Mac OS X 10.9.5 PHP version: 5.4.33 Package: cURL related Bug Type: Bug Bug description:New value for CURLOPT_PROXY is ignored, old value is re-used Description: ------------ In some cases, despite changing the proxy of a cURL handle, subsequent transfers will keep using the old proxy. The bug does not occur with every URL, presumably due to presence or not of "Connection: keep-alive" header in the server response. I was able to reproduce only with some https:// URLs, https://php.net/curl in my attached test script is an example that does reproduce the bug. However http://example.com/ does not reproduce the bug, for example. cURL version: 7.30.0 Test script: --------------- <?php # To reproduce the bug, change 'proxy1.example.com:80' and # 'proxy2.example.com:80' below with hostname:port of actual proxies. They must # each resolve to a different IP address. $ch = curl_init(); curl_setopt($ch, CURLOPT_VERBOSE, TRUE); curl_setopt($ch, CURLOPT_NOBODY, TRUE); curl_setopt($ch, CURLOPT_URL, 'https://php.net/curl'); curl_setopt($ch, CURLOPT_PROXY, 'proxy1.example.com:80'); curl_exec($ch); curl_setopt($ch, CURLOPT_PROXY, 'proxy2.example.com:80'); curl_exec($ch); curl_close($ch); ?> Expected result: ---------------- The second curl_exec() call is tunneled through 'proxy2.example.com'. Output contains: * About to connect() to proxy proxy2.example.com port 80 (#1) Actual result: -------------- The second curl_exec() call is tunneled through 'proxy1.example.com'. Output contains: * Re-using existing connection! (#0) with host proxy1.example.com -- Edit bug report at https://bugs.php.net/bug.php?id=68211&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68211&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68211&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68211&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68211&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68211&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68211&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68211&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68211&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68211&r=support Expected behavior: https://bugs.php.net/fix.php?id=68211&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68211&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68211&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68211&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68211&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68211&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68211&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68211&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68211&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68211&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68211&r=mysqlcfg