我正在尝试使用HTTP / 1.1 Partial Content标头将mp3文件流式传输到SoundManager,以便为我的媒体文件提供一些保护,并允许用户搜索到轨道的不同位置.我在IE7-10,Firefox,Safari和Opera中使用过的代码,但拒绝在Google Chrome中使用.如果我要删除部分内容标题,它将播放该文件但不允许用户搜索.
原文链接：https://www.f2er.com/php/136122.html在检查Chrome开发工具中的网络选项卡时,有2个请求,其中一个处于暂挂状态,另一个处于取消状态.这两个请求的大小都是13B.我要播放的文件是9.11MB.
$name = $_GET['name'];
$file_size = filesize($file);
$file = "C:\xampp\htdocs\..\protected\music\testsong.mp3"; // song,user and all other checks are performed before this to get the file path.
$etag = md5(uniqid(rand(),true));
$open_file = fopen($file,'rb');
if( !$open_file ) throw new Exception('Could not open file');
$start = 0;
$end = $file_size - 1;
if( isset($_SERVER['HTTP_RANGE']) && !empty($_SERVER['HTTP_RANGE']) ) {
$range = explode('-',substr($_SERVER['HTTP_RANGE'],strlen('bytes=')));
$start = $range[0];
if( $range[1] > 0 ) $end = $range[1];
header('HTTP/1.1 206 Partial Content');
header('Status: 206');
header('Accept-Ranges: bytes');
header('Content-Range: ' . $_SERVER['HTTP_RANGE'] . '/' . $file_size);
header('Content-Length: ' . ($end - $start + 1));
} else header('Content-Length: ' . $file_size);
header('Content-Type: ' . $content_type);
if( $download ) header('Content-Disposition: attachment; filename="' . $name . '"');
header('Last-Modified: ' . date('D,d M Y H:i:s \G\M\T',filemtime($file)));
header('ETag: "' . $etag . '"');
header('Expires: 0');
header('Pragma: no-cache');
header('Cache-Control: must-revalidate');
if( $start > 0 ) fseek($open_file,$start);
$bytes_position = $start;
while( !feof($open_file) && $bytes_position <= $end ) {
if( connection_aborted() || connection_status() != 0 ) throw New Exception('Connection Aborted');
$chunk = 1048000;
if( $bytes_position + $chunk > $end + 1 ) $chunk = $end - $bytes_position + 1;
$chunk = fread($open_file,$chunk);
if( !$chunk ) throw New Exception('Could not read file');
print($chunk);
flush();
$bytes_position += $chunk;
}
fclose($open_file);
