Bug #72456 [NEW]: Buffer output in stream_socket_client

From: piotroo89 at gmail dot com Operating system: Debian PHP version: 5.6.22 Package: OpenSSL related Bug Type: Bug Bug description:Buffer output in stream_socket_client Description: ------------ I have a problem with stream socket and SSL in PHP 5.6. It seems that SSL is buffering output. In the example below "ehlo" command is ignored (server is not responding). But when something else is sent after "ehlo" e.g. a new line in another call to fwrite, server sends response. I've tried using stunnel to check if it's a PHP SSL wrapper issue and when I change $host to $host = 'localhost:110;' (my stunnel configuration) everything works perfectly (without adding that special fwrite method). In PHP 5.4.45 this case work perfectly. Test script: --------------- $streamContext = stream_context_create(); $host = 'ssl://smtp.some.server.com:465'; $stream = stream_socket_client($host, $errno, $errstr, $timeout, STREAM_CLIENT_CONNECT, $streamContext); stream_set_blocking($stream, 1); stream_set_timeout($stream, $timeout); stream_set_write_buffer($stream, 0); $fgets = fgets($stream); print_r($fgets); fwrite($stream, "ehlo [127.0.0.1]\r\n"); fwrite($stream, "\r\n"); //when I write this into socket result is OK, without this socket seems to be buffered $response = ''; do { $line = fgets($stream); $response .= $line; } while (null !== $line && false !== $line && ' ' != $line{3}); print_r($response); Expected result: ---------------- 220 epicserver.net.pl ESMTP IdeaSmtpServer v0.80.2 ready. 250-epicserver.net.pl Hello ip-166-242.pl [94.183.162.232], pleased to meet you 250-PIPELINING 250-ENHANCEDSTATUSCODES 250-SIZE 250-8BITMIME 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250 HELP Actual result: -------------- 220 epicserver.net.pl ESMTP IdeaSmtpServer v0.80.2 ready. -- Edit bug report at https://bugs.php.net/bug.php?id=72456&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72456&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72456&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72456&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72456&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72456&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72456&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72456&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72456&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72456&r=support Expected behavior: https://bugs.php.net/fix.php?id=72456&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72456&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72456&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72456&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72456&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72456&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72456&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72456&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72456&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72456&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72456&r=mysqlcfg