#27584 [Opn->Fbk]: flush sometimes don't work

ID: 27584 Updated by: iliaa@php.net Reported By: xuefer at 21cn dot com -Status: Open +Status: Feedback Bug Type: Apache2 related Operating System: * PHP Version: 4CVS-2004-03-13 New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Thank you for your interest in PHP. flushing works differently in ap2 then it does in ap1, which may explain the different output. P.S. Seems to work equally well in ap1 and ap2 on Linux however. Previous Comments: ------------------------------------------------------------------------ [2004-03-15 09:52:45] xuefer at 21cn dot com my expected result works under apache1 and failed(actual result) under apache2 so what? apache2 bug itself? ------------------------------------------------------------------------ [2004-03-15 09:42:51] sniper@php.net Can you verify if this happens with Apache 1 too..? ------------------------------------------------------------------------ [2004-03-13 11:23:41] xuefer at 21cn dot com tested with lastest build without Rang: Sun Mar 14 00:30:21 2004 GET /test.php HTTP/1.1 Sun Mar 14 00:30:21 2004 Host: 127.0.0.1 Sun Mar 14 00:30:21 2004 Accept: */* Sun Mar 14 00:30:21 2004 User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98) Sun Mar 14 00:30:21 2004 Pragma: no-cache Sun Mar 14 00:30:21 2004 Cache-Control: no-cache Sun Mar 14 00:30:21 2004 Connection: close Sun Mar 14 00:30:21 2004 HTTP/1.1 200 OK Sun Mar 14 00:30:21 2004 Date: Sat, 13 Mar 2004 16:30:21 GMT Sun Mar 14 00:30:21 2004 Server: Apache/2.0.48 (Win32) Sun Mar 14 00:30:21 2004 Connection: close Sun Mar 14 00:30:21 2004 Transfer-Encoding: chunked Sun Mar 14 00:30:21 2004 Content-Type: binary with Rang: Sun Mar 14 00:31:41 2004 GET /test.php HTTP/1.1 Sun Mar 14 00:31:41 2004 Host: 127.0.0.1 Sun Mar 14 00:31:41 2004 Accept: */* Sun Mar 14 00:31:41 2004 User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98) Sun Mar 14 00:31:41 2004 Range: bytes=839516- Sun Mar 14 00:31:41 2004 Pragma: no-cache Sun Mar 14 00:31:41 2004 Cache-Control: no-cache Sun Mar 14 00:31:41 2004 Connection: close Sun Mar 14 00:31:42 2004 HTTP/1.1 200 OK Sun Mar 14 00:31:42 2004 Date: Sat, 13 Mar 2004 16:31:41 GMT Sun Mar 14 00:31:42 2004 Server: Apache/2.0.48 (Win32) Sun Mar 14 00:31:42 2004 Content-Range: bytes 839516-96413656/96413657 Sun Mar 14 00:31:42 2004 Content-Length: 95574141 Sun Mar 14 00:31:42 2004 Connection: close Sun Mar 14 00:31:42 2004 Content-Type: binary ------------------------------------------------------------------------ [2004-03-13 04:56:27] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip ------------------------------------------------------------------------ [2004-03-12 21:45:17] xuefer at 21cn dot com Description: ------------ it works under apache1, but not on apache2 this script is used for network-speed testing yet, i don't know if it's relative to php or apache Reproduce code: --------------- <?php header("Content-Type: binary"); // while (@ob_clean()); set_time_limit(5); // may be 1 $fp = fopen("/dev/urandom"); $u = fread($fp, 1024 * 1024); // 1mb while (1) { echo $u; ob_flush(); flush(); } ?> Expected result: ---------------- under apache1, each time request to this file will download start from 0% immediately tested under IE & Flashget Actual result: -------------- but under apache2, 1st time seems ok, cancel IE download or stopped flashget, then try again(with "Rang" header), download will not start until script is timedout, then, start with a content-length in response header the process of apache2 is taking so much memory about XXmb even 1XXmb ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27584&edit=1