#48249 [NEW]: socket_read not returning on no more data to read

From: z4ns4tsu at gmail dot com Operating system: Windows XP PHP version: 5.2.9 PHP Bug Type: Sockets related Bug description: socket_read not returning on no more data to read Description: ------------ I am initiating a socket to an SMTP server to send a message. After transmitting the EHLO, I need to wait for a variable number of lines to be returned, so I am using a do{..}while() loop to check if there is nothing more to be read from the socket before sending the next command. The program, however, falls into an endless wait because socket_read() is never returning an empty string (like the documentation says it will) or FALSE (like some other bug reports say it will). I have tried with both the PHP_BINARY_READ and PHP_NORMAL_READ flags set as well as with no flags set at all. Reproduce code: --------------- foreach($mail_head as $in) { $output = ""; $in .= "\r\n"; echo $in; @socket_write($socket, $in, strlen($in)) or die("Error writing to socket: " . socket_strerror(socket_last_error())); do { $out = false; $out = socket_read($socket, 1024); $output .= $out; } while($out !== false && $out !== ''); if(!preg_match('/^[23]/', $output)) { die("Error: Mail server did not return the expected response."); } } Expected result: ---------------- EHLO fake.domain 250-this server offers 4 extensions 250-AUTH LOGIN 250-SIZE 30485760 250-HELP 250 AUTH=LOGIN MAIL FROM:<address@fake.domain> 250 Requested mail action okay, completed ... Actual result: -------------- EHLO fake.domain <nothing> -- Edit bug report at http://bugs.php.net/?id=48249&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48249&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48249&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48249&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48249&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48249&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48249&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48249&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48249&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48249&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48249&r=support Expected behavior: http://bugs.php.net/fix.php?id=48249&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48249&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48249&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48249&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48249&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=48249&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48249&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48249&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48249&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48249&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48249&r=mysqlcfg