Bug #72456 [Opn->Fbk]: Buffer output in stream_socket_client

Edit report at https://bugs.php.net/bug.php?id=72456&edit=1 ID: 72456 Updated by: cmb@php.net Reported by: piotroo89 at gmail dot com Summary: Buffer output in stream_socket_client -Status: Open +Status: Feedback Type: Bug Package: OpenSSL related Operating System: Debian PHP Version: 5.6.22 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Is this still an issue with any of the actively supported PHP versions[1]? [1] <https://www.php.net/supported-versions.php> Previous Comments: ------------------------------------------------------------------------ [2016-06-20 09:23:10] piotroo89 at gmail dot com 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 this bug report at https://bugs.php.net/bug.php?id=72456&edit=1