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

Tue Dec 15 07:34:55 MST 2009

Hi Dale,
What happens if the internet goes down in the middle of a download,  
how do you capture this and log it.

On Dec 14, 2009, at 8:48 PM, Dale Bengston wrote:

> I'm not sure I understand your question.
>
> On Dec 14, 2009, at 2:45 PM, Someone wrote:
>
>> Hi Dale,
>> Where do you your database action if download is successful
>>
>> On Dec 14, 2009, at 2:11 PM, Dale Bengston wrote:
>>
>>> 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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>>>
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