/**
* Send contents of the given stream as binary message.
*
* @param ReadableStream $stream Source of data to be sent (will be closed after all bytes have been consumed).
* @param int $priority Message priority.
* @return int Number of transmitted bytes.
*/
public function sendBinary(ReadableStream $stream, int $priority = 0) : Awaitable
{
return $this->writer->sendBinary($stream, $priority);
}