#21485 [Fbk->NoF]: feof() doesn't returns true on a socket stream

ID: 21485 Updated by: php-bugs@lists.php.net Reported By: bjarne@sourcetech.se -Status: Feedback +Status: No Feedback Bug Type: Sockets related Operating System: Win2K/Linux PHP Version: 4.3.0 Assigned To: wez New Comment: No feedback was provided for this bug for over 2 weeks, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". Previous Comments: ------------------------------------------------------------------------ [2003-01-09 04:33:57] nicos@php.net The following works for me: $fp = fsockopen("localhost", 25); stream_set_blocking($fp, false); fwrite($fp, "QUIT\r\n"); while(!feof($fp)) { $data = fgets($fp); var_dump($data); } echo "\nAll done\n"; Under Win2000, WinXP, Linux2.4.19 (with IPv6), FreeBSD4.5 (with IPv6)... Not verified at all for me. ------------------------------------------------------------------------ [2003-01-09 04:23:45] wez@php.net The following works for me: $fp = fsockopen("localhost", 25); stream_set_blocking($fp, false); fwrite($fp, "QUIT\r\n"); while(!feof($fp)) { $data = fgets($fp); var_dump($data); } echo "\nAll done\n"; Remember that feof() will only return true when there is no more data in the internal buffer held by the stream, so you need to drain off any input by consuming it all first. ------------------------------------------------------------------------ [2003-01-09 04:05:25] wez@php.net The nature of non-blocking sockets means that your script must always be prepared to handle a false or zero length return from fgets/fread, so I'm not worried about that aspect. However, the feof() does seem to be a problem. Looking into it... ------------------------------------------------------------------------ [2003-01-09 02:48:19] bjarne@sourcetech.se I've noticed that I need the sleep() in order to retrieve the data. The behaviour with blocking/non blocking sockets haven't changed though, its still the same in php 4.3.0 as it were in previous php versions. What has changed is the feof() that never return true. Regards /Bjarne ------------------------------------------------------------------------ [2003-01-08 21:40:39] iliaa@php.net It seems that socket_set_blocking($fp,FALSE); results in other peculiar behaviour. When connecting to SMTP server, the server sends some data across the socket right away, usually something identifying the server. $fp = fsockopen("mail_server", 25); var_dump(fgets($fp, 1024)); fclose($fp); returns the server identify string $fp = fsockopen("mail_server", 25); socket_set_blocking($fp,FALSE); var_dump(fgets($fp, 1024)); fclose($fp); returns (false) $fp = fsockopen("mail_server", 25); sleep(1); socket_set_blocking($fp,FALSE); var_dump(fgets($fp, 1024)); fclose($fp); returns identify string. The position of the sleep() call can be after socket_set_blocking() as well. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/21485 -- Edit this bug report at http://bugs.php.net/?id=21485&edit=1