set_time_limit(0);
ini_set('max_execution_time',0);

//get the http get values and set them as php variables


//download the recordings
if ($_GET['a'] == "download") {
session_cache_limiter('public');
if ($_GET['type'] = "rec") {
$ File _path = $_SESSION['switch']['recordings']['dir'].'/'.base64_decode($_GET['filename']);
$filesize = filesize($file_path);
if (file_exists($file_path)) {
// $fd = fopen($file_path, "rb");
if ($_GET['t'] == "bin") {
// header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
// header("Content-Type: application/download");
// header("Content-Description: File Transfer");
header('Content-Disposition: attachment; filename="'.basename($file_path).'"');
}
else {
$file_ext =  substr (base64_decode($_GET['filename']), -3);
if ($file_ext == "wav") {
header("Content-Type: audio/x-wav");
}
if ($file_ext == "mp3") {
header("Content-Type: audio/mp3");
}
if ($file_ext == "avi") {
header("Content-Type: video/avi");
}
if ($file_ext == " mp4 ") {
header("Content-Type: video/mp4");
}

}
// header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
// header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
header("Content-Length: " . $filesize);
ob_clean();
// fpassthru($fd);
//针对大文件，规定每次读取文件的字节数为4096字节，直接输出数据
    $read_buffer = 4096;
    $handle = fopen($file_path, 'rb');
    //总的缓冲的字节数
    $sum_buffer = 0;
    //只要没到文件尾，就一直读取
    while(!feof($handle) && $sum_buffer<$filesize) {
        echo fread($handle,$read_buffer);
        $sum_buffer += $read_buffer;
    }

    //关闭句柄
     fclose ($handle);
}
}
exit;
}