[FX.php List] [OFF] connection_aborted on IIS

Mon Dec 14 12:11:23 MST 2009

Hi Frank,

Here's how I force a download x-plat. Content type doesn't matter. You want the browser to think it's not something it can load in a browser window.

	header('Content-Description: File Transfer');
	header('Content-Type: application/octet-stream');
	header('Content-Disposition: attachment; filename='. basename($file));
	header('Content-Transfer-Encoding: binary');
	header('Expires: 0');
	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
	header('Pragma: public');
	header('Content-Length:' . filesize($file));
	ob_clean();
	flush();
	readfile($file);
	exit;

I have not tried it on .exe files. That might be a security thing that IIS is preventing.

Dale

On Dec 14, 2009, at 9:38 AM, Someone wrote:

> Hi,
> Does any one know if connection_aborted function works on IIS (Microsoft-IIS/7.0) / Windows Server 2008
> 
> I'm trying to do a force down a file (exe) and record if download was completed
> 
> It works on Apache/ OS X
> 
> Thanks
> Frank
> 
> Here's the script
> ---------------------------------------------------
> $filename = $_GET['file'];
> 
> // required for IE, otherwise Content-disposition is ignored
> if(ini_get('zlib.output_compression')) ini_set('zlib.output_compression', 'Off');
> 
> $file_extension = strtolower(substr(strrchr($filename,"."),1));
> 
> if( $filename == "" ) {
>  //echo "<html><title>eLouai's Download Script</title><body>ERROR: download file NOT SPECIFIED. USE force-download.php?file=filepath</body></html>";
>  exit;
> } elseif ( ! file_exists( $filename ) ) {
>  //echo "<html><title>eLouai's Download Script</title><body>ERROR: File not found. USE force-download.php?file=filepath</body></html>";
>  exit;
> };
> switch( $file_extension )
> {
>  case "pdf": $ctype="application/pdf"; break;
>  case "exe": $ctype="application/octet-stream"; break;
>  case "zip": $ctype="application/zip"; break;
>  case "doc": $ctype="application/msword"; break;
>  case "xls": $ctype="application/vnd.ms-excel"; break;
>  case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
>  case "gif": $ctype="image/gif"; break;
>  case "png": $ctype="image/png"; break;
>  case "jpeg":
>  case "jpg": $ctype="image/jpg"; break;
>  default: $ctype="application/force-download";
> }
> 
> header("Pragma: public"); // required
> header("Expires: 0");
> header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
> header("Cache-Control: private",false); // required for certain browsers
> header("Content-Type: $ctype");
> // change, added quotes to allow spaces in filenames, by Rajkumar Singh
> header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
> header("Content-Transfer-Encoding: binary");
> header("Content-Length: ".filesize($filename));
> 
> $bytes_send = 0;
> $size = filesize($filename);
> $file = fopen($filename,"rb");
> if(isset($_SERVER['HTTP_RANGE'])) fseek($file, $range);
> while(!feof($file) ){ // if we haven't got to the End Of File
> 	$buffer = fread($file, 1024*8);
> 	print($buffer);//read 8k from the file and send to the user
> 	flush();//force the previous line to send its info
> 	$bytes_send += strlen($buffer);
> 	if (connection_aborted()){ //check the connection, if it has ended...
> 		fclose($file);//close the file
> 		die(); //kill the script
> 	}
> }
> if( connection_aborted() ) die();
> 
> fclose($file);//close the file
> 
> if( $size == $bytes_send){
> 	// record download was completed
> }
> exit;
> ---------------------------------------------------
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