[franciscol99]

Thanks for the reply,
I think this isn't the problem. The content is sent in small pieces.
My Max Dynamic Response Body Size is set to 500M and I can usually set up to 2147483647, download size appears and download starts (and complete).
If I do not define the Content-Length header, download generally occurs without showing the file size.
I think it's a problem with the interpretation of Content-Length header.
Maybe a bug with integer type.

This is what I have:

PHP Code:

<?php
define('CHUNK_SIZE', 1024*1024); // Size (in bytes) of tiles chunk

// Read a file and display its content chunk by chunk
function readfile_chunked($filename, $retbytes = TRUE) {
    $buffer = '';
    $cnt =0;
    // $handle = fopen($filename, 'rb');
    $handle = fopen($filename, 'rb');
    if ($handle === false) {
        return false;
    }
    while (!feof($handle)) {
        $buffer = fread($handle, CHUNK_SIZE);
        echo $buffer;
        ob_flush();
        flush();
        if ($retbytes) {
            $cnt += strlen($buffer);
        }
    }
    $status = fclose($handle);
    if ($retbytes && $status) {
        return $cnt; // return num. bytes delivered like readfile() does.
    }
    return $status;
}

    $filename = '/media/Test/Files/BigFile.rar';
    $mimetype = 'application/x-rar-compressed';
    $sz= filesize($filename);
    header('Content-Type: '.$mimetype );
    header('Content-Disposition: attachment; filename="'.basename($filename).'"');
    header("Content-Length: ".$sz);
    readfile_chunked($filename);

?>

This will not start the download.

If I change
header("Content-Length: ".$sz); to header("Content-Length: ".(2147483647));
It works, and to
header("Content-Length: ".(2147483648));
don't work.

Please help me