How to give wav correctly?

Question

PHP

Good day.
Today the task has become to give wav files from under ssh connection.
It seems that everything is in order, the record is played, but rewind and playback progress do not work.

function openFile($remote_dir, $remote_file) {
              $sftp = $this->sftp;
            $dir = "ssh2.sftp://$sftp$remote_dir$remote_file";
             $stream = readfile("$dir", 'r');
        header('Content-Type: audio/x-wav');			
        header("Accept-Ranges: bytes");
        header("Connection: close");
        header("Content-type: application/octet-stream");
        header("Content-Length: ".filesize($dir));
        header("Content-Range:bytes 0-".filesize($dir)."/".filesize($dir));
        
        
        
          die();
        }

I accept the file with the usual audio tag.

Answer 1

php.net/manual/en/function.http-send-file.php