How to detect if file download completed or cancelled

**petersprc@gmail.com** · Oct 20 '06, 01:35 AM

Re: How to detect if file download completed or cancelled

You could check the byte count in the web server log to see if the
whole file was transferred.

In PHP, you could also do this by checking connection_abor ted() after
sending the file. For example:

ignore_user_abo rt(true); // Don't end if the connection breaks

if (readfile($path ) !== false && !connection_abo rted()) {
// Success!
}

Here's a larger example. The function sendFile returns the status of
the download:

<?

// Sample usage

function sendTest()
{
$res = sendFile('appli cation.exe', 'application/octet-stream');

if ($res['status']) {
// Download succeeded
} else {
// Download failed
}

@saveDownloadSt atus($res);
}

// The sendFile function streams the file and checks if the
// connection was aborted.

function sendFile($path, $contentType = 'application/octet-stream')
{
ignore_user_abo rt(true);

header('Content-Transfer-Encoding: binary');
header('Content-Disposition: attachment; filename="' .
basename($path) . "\";");
header("Content-Type: $contentType");

$res = array(
'status' =false,
'errors' =array(),
'readfileStatus ' =null,
'aborted' =false
);

$res['readfileStatus '] = readfile($path) ;
if ($res['readfileStatus '] === false) {
$res['errors'][] = 'readfile failed.';
$res['status'] = false;
}

if (connection_abo rted()) {
$res['errors'][] = 'Connection aborted.';
$res['aborted'] = true;
$res['status'] = false;
}

return $res;
}

// Save the status of the download to some place

function saveDownloadSta tus($res)
{
$ok = false;
$fh = fopen('download-status-' . $_SERVER['REMOTE_ADDR'] . '-' .
date('Ymd_His') , 'w');
if ($fh) {
$ok = true;
if (!fwrite($fh, var_export($res , true))) {
$ok = false;
}
if (!fclose($fh)) {
$ok = false;
}
}
return $ok;
}

Dan D wrote:

I have a large install file (an exe) on my web server that people
download and install from. Looking at my log files, I see a lot of
people downloading it, but no way to tell for sure if they completed the
download or cancelled out before it completed. Is there any function in
PHP that would allow the web server to send the file and detect a
completion or cancellation? Or perpahs a javascript/PHP method?
>
Any help would be greatly appreciated.
Thanks,
Dan

**Dan D** · Oct 23 '06, 08:35 PM

Re: How to detect if file download completed or cancelled

Thank you very much. That looks like it should work great. I'll give it
a try.
Dan

petersprc@gmail .com wrote:

You could check the byte count in the web server log to see if the
whole file was transferred.
>
In PHP, you could also do this by checking connection_abor ted() after
sending the file. For example:
>
ignore_user_abo rt(true); // Don't end if the connection breaks
>
if (readfile($path ) !== false && !connection_abo rted()) {
// Success!
}
>
Here's a larger example. The function sendFile returns the status of
the download:
>
<?
>
// Sample usage
>
function sendTest()
{
$res = sendFile('appli cation.exe', 'application/octet-stream');
>
if ($res['status']) {
// Download succeeded
} else {
// Download failed
}
>
@saveDownloadSt atus($res);
}
>
// The sendFile function streams the file and checks if the
// connection was aborted.
>
function sendFile($path, $contentType = 'application/octet-stream')
{
ignore_user_abo rt(true);
>
header('Content-Transfer-Encoding: binary');
header('Content-Disposition: attachment; filename="' .
basename($path) . "\";");
header("Content-Type: $contentType");
>
$res = array(
'status' =false,
'errors' =array(),
'readfileStatus ' =null,
'aborted' =false
);
>
$res['readfileStatus '] = readfile($path) ;
if ($res['readfileStatus '] === false) {
$res['errors'][] = 'readfile failed.';
$res['status'] = false;
}
>
if (connection_abo rted()) {
$res['errors'][] = 'Connection aborted.';
$res['aborted'] = true;
$res['status'] = false;
}
>
return $res;
}
>
// Save the status of the download to some place
>
function saveDownloadSta tus($res)
{
$ok = false;
$fh = fopen('download-status-' . $_SERVER['REMOTE_ADDR'] . '-' .
date('Ymd_His') , 'w');
if ($fh) {
$ok = true;
if (!fwrite($fh, var_export($res , true))) {
$ok = false;
}
if (!fclose($fh)) {
$ok = false;
}
}
return $ok;
}
>
Dan D wrote:
>

>>I have a large install file (an exe) on my web server that people
>>download and install from. Looking at my log files, I see a lot of
>>people downloading it, but no way to tell for sure if they completed the
>>download or cancelled out before it completed. Is there any function in
>>PHP that would allow the web server to send the file and detect a
>>completion or cancellation? Or perpahs a javascript/PHP method?
>>
>>Any help would be greatly appreciated.
>>Thanks,
>>Dan

>
>

How to detect if file download completed or cancelled

How to detect if file download completed or cancelled

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