Bug #74135 [NEW]: CURLOPT_RESOLVE don't work properly in second time curl call

From: icez at icez dot net Operating system: Linux Debian Jessie PHP version: 7.0.16 Package: cURL related Bug Type: Bug Bug description:CURLOPT_RESOLVE don't work properly in second time curl call Description: ------------ I have the code that call several servers behind the load balancer to check for the page load result. The server was configured with SSL so I need the way to force curl to connect to specific IP address with the correct hostname without having to set SSL_VERIFYHOST to false and found curl option CURLOPT_RESOLVE. I've tested that curl command line can use this option to force connect to specific server IP address, but when I run the test script in PHP it always connect to first server. which is the first address to have this option set to. related question: http://stackoverflow.com/questions/36434049/php-curl-curlopt-resolve-not-working Test script: --------------- $servers = [ '192.0.2.1', '192.0.2.2', '192.0.2.3' ]; foreach ($servers as $server) { $ch = curl_init(); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_DNS_CACHE_TIMEOUT, 0); curl_setopt($ch, CURLOPT_RESOLVE, $resolveparam); curl_setopt($ch, CURLOPT_URL, "https://example.com/some/path"); curl_setopt($ch, CURLOPT_VERBOSE, 1); $result = curl_exec($ch); $info = curl_getinfo($ch); echo $info['primary_ip']."\n"; curl_close($ch); } Expected result: ---------------- 192.0.2.1 192.0.2.2 192.0.2.3 Actual result: -------------- 192.0.2.1 192.0.2.1 192.0.2.1 -- Edit bug report at https://bugs.php.net/bug.php?id=74135&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74135&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74135&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74135&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74135&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74135&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74135&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74135&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74135&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74135&r=support Expected behavior: https://bugs.php.net/fix.php?id=74135&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74135&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74135&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74135&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74135&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74135&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74135&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74135&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74135&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74135&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74135&r=mysqlcfg