Req #77661 [NEW]: Connection succeeds despite invalid bind address

From: me at tati dot pro Operating system: any PHP version: master-Git-2019-02-24 (Git) Package: Sockets related Bug Type: Feature/Change Request Bug description:Connection succeeds despite invalid bind address Description: ------------ If invalid bind address is specified with stream_socket_client, than connection still be successfull. I working with 4g usb modems, which sometimes hangs and reboots (in this time network interface is not available, so i receiving error that bind fails). Checking if interfaces is not available before creating socket working 99% times, but not 100%. If i receive that error than i can close socket immediately, but syn/ack/rst sequence 'll be produced that is undesirable behavior. My program should not work if binding fails, because routing 'll be incorrect in this case. So i need the way to change behavior, like an additional stream option that 'll force connection error if bind fails. https://github.com/php/php-src/blob/623911f993f39ebbe75abe2771fc89faf6b15b9b/main/network.c#L876 Test script: --------------- $context = stream_context_create(array('socket'=>array('bindto'=>'1.2.3.4:5678'))); $stream = stream_socket_client('tcp://google.com:80', $errno, $errstr, 10, STREAM_CLIENT_CONNECT, $context); var_dump($stream); Expected result: ---------------- Connection should not be created. Actual result: -------------- PHP Warning: stream_socket_client(): failed to bind to '1.2.3.4:5678', system said: Cannot assign requested address in /home/tatikoma/z.php on line 4 PHP Stack trace: PHP 1. {main}() /home/tatikoma/z.php:0 PHP 2. stream_socket_client() /home/tatikoma/z.php:4 resource(5) of type (stream) -- Edit bug report at https://bugs.php.net/bug.php?id=77661&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77661&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77661&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77661&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77661&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77661&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77661&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77661&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77661&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77661&r=support Expected behavior: https://bugs.php.net/fix.php?id=77661&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77661&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77661&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77661&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77661&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77661&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77661&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77661&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77661&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77661&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77661&r=mysqlcfg