Bug #13601 Updated: File download with Content-Length specified fails with IE5.5

ID: 13601 User updated by: adam@net-europa.com Reported By: adam@net-europa.com Status: Open Bug Type: Apache related Operating System: Linux (Red Hat 7) PHP Version: 4.0.6 New Comment: The following code: $size = filesize($userfile); $fp=fopen($userfile,"r"); header("Pragma: no-cache");// HTTP/1.0 header("Cache-Control: no-cache, must-revalidate");// HTTP/1.1 header("Content-Type: application/octet-stream"); if(preg_match("/MSIE 5.5/", $HTTP_USER_AGENT)) header("Content-Disposition: filename=$userfile"); else header("Content-Disposition: attachment; filename=$userfile"); header("Content-Length: $size"); header("Content-Transfer-Encoding: binary\n"); fpassthru($fp); when run under Linux/Apache results in a zero length file on MS IE 5.5 when connecting via an ISP or proxy. I have tried various ISPs all with the same result. All is fine with Netscape, or with a direct LAN connection. Also, if the same PHP script is run under Windows NT 4.0 / IIS 5.0 all is well. By removing the line: header("Content-Length: $size"); the download is successful, but we lose any progress bar so this workaround is far from ideal. Previous Comments: ------------------------------------------------------------------------ [2001-10-08 13:52:25] adam@net-europa.com The following code: $size = filesize($file); header("Pragma: no-cache");// HTTP/1.0 header("Cache-Control: no-cache, must-revalidate");// HTTP/1.1 header("Content-Type: application/octet-stream"); if(preg_match("/MSIE 5.5/", $HTTP_USER_AGENT)) header("Content-Disposition: filename=$userfile"); else header("Content-Disposition: attachment; filename=$userfile"); header("Content-Length: $size"); header("Content-Transfer-Encoding: binary\n"); fpassthru($fp); when run under Linux/Apache results in a zero length file on MS IE 5.5 when connecting via an ISP or proxy. I have tried various ISPs all with the same result. All is fine with Netscape, or with a direct LAN connection. Also, if the same PHP script is run under Windows NT 4.0 / IIS 5.0 all is well. By removing the line: header("Content-Length: $size"); the download is successful, but we lose any progress bar so this workaround is far from ideal. ------------------------------------------------------------------------ Edit this bug report at http://bugs.php.net/?id=13601&edit=1