Aerys\Websocket\Handshake::stream PHP Méthode

    public function stream(string $partialBodyChunk) : \Amp\Promise
    {
        if ($this->status === 101) {
            throw new \DomainException("Cannot stream(); entity body content disallowed for Switching Protocols Response");
        }
        if (!$this->isStarted) {
            $this->handshake();
        }
        $this->isStarted = true;
        return $this->response->stream($partialBodyChunk);
    }