morozovsk\websocket\Daemon::_handshake PHP Method

    protected function _handshake($connectionId)
    {
        //read the headers from the connection
        if (!strpos($this->_read[$connectionId], "\r\n\r\n")) {
            return true;
        }
        preg_match("/Sec-WebSocket-Key: (.*)\r\n/", $this->_read[$connectionId], $match);
        if (empty($match[1])) {
            return false;
        }
        $headers = explode("\r\n", $this->_read[$connectionId]);
        $info = array();
        foreach ($headers as $header) {
            if (($explode = explode(':', $header)) && isset($explode[1])) {
                $info[trim($explode[0])] = trim($explode[1]);
            } elseif (($explode = explode(' ', $header)) && isset($explode[1])) {
                $info[$explode[0]] = $explode[1];
            }
        }
        /*$source = explode(':', stream_socket_get_name($this->clients[$connectionId], true));
          $info['Ip'] = $source[0];*/
        $this->_read[$connectionId] = '';
        //send a header according to the protocol websocket
        $SecWebSocketAccept = base64_encode(pack('H*', sha1($match[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
        $upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" . "Upgrade: websocket\r\n" . "Connection: Upgrade\r\n" . "Sec-WebSocket-Accept:{$SecWebSocketAccept}\r\n\r\n";
        $this->_write($connectionId, $upgrade);
        unset($this->_handshakes[$connectionId]);
        $this->onOpen($connectionId, $info);
        return true;
    }