#24101 [Opn->Bgs]: socket_select call is blocking and never returning

ID: 24101 Updated by: wez@php.net Reported By: wzaccone at telcordia dot com -Status: Open +Status: Bogus Bug Type: Sockets related Operating System: Solaris 5.8 / Sparc PHP Version: 4.3.2 New Comment: Looking at the CVS history, there is no way that your code should work in 4.1.2 (socket_select() didn't even accept arrays as parameters back then), nor even in 4.2.x (which only accepted the socket extensions own descriptors). The chances are that it only worked as a fluke. The sockets extension has always been documented as experimental, so functionality change from flaky code that is 18 months old is allowed, without notice. It is highly recommended that you update your code to use the stream_select() function provided in PHP 4.3.x, as it is more flexible and an officially supported (stable!) API. This is not a bug in PHP, so I'm marking this report as Bogus. Previous Comments: ------------------------------------------------------------------------ [2003-06-10 09:23:25] wzaccone at telcordia dot com thank you for the info.. we were previously using socket_select and fread successfully with 4.1.2 and went live with an application doing so. For our next release, we upgraded to PHP 4.3.2 and it stopped working. Can I assume that this behavior has changed with 4.3.2?? therefore we must migrate to using streams_select to upgrade to 4.3.2? ------------------------------------------------------------------------ [2003-06-10 09:19:12] wez@php.net You can't use fread() on sockets returned from the sockets extension, and likewise, you can use socket_select() on streams returned from fopen() or fsockopen(). Perhaps you meant to use stream_select() instead? ------------------------------------------------------------------------ [2003-06-10 09:02:26] wzaccone at telcordia dot com function readMsgsFromHosts($sockets){ set_time_limit(0); $numSockets = count($sockets); $keys = array_keys($sockets); $socketsCopy = Array(); foreach ($keys as $key){ $socketsCopy[$key] = $sockets[$key]; } if (@socket_select($socketsCopy, $w = NULL, $e = NULL, $tv = NULL) !== FALSE){ foreach($socketsCopy as $sock){ $string = fread($sock, $readAmount); ------------------------------------------------------------------------ [2003-06-09 23:40:31] sniper@php.net Could you give a complete (but short, please) script that shows this problem clearly..? (can't reproduce, but I'm propably missing some part here..) ------------------------------------------------------------------------ [2003-06-09 14:02:38] wzaccone at telcordia dot com we upgraded our application from php 4.1.2 to 4.3.2 and are testing. and found the following code no longer works: if (@socket_select($socketsCopy, $w = NULL, $e = NULL, $tv = NULL) !== FALSE){ foreach($socketsCopy as $sock){ The socket_select call appears to be never returning with php 4.3.2.. code worked correctly with 4.1.2. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=24101&edit=1