Method _handleServerFenceMsg

systemvm/agent/noVNC/core/rfb.js:2653–2693

()

    }

    _handleServerFenceMsg() {
        if (this._sock.rQwait("ServerFence header", 8, 1)) { return false; }
        this._sock.rQskipBytes(3); // Padding
        let flags = this._sock.rQshift32();
        let length = this._sock.rQshift8();

        if (this._sock.rQwait("ServerFence payload", length, 9)) { return false; }

        if (length > 64) {
            Log.Warn("Bad payload length (" + length + ") in fence response");
            length = 64;
        }

        const payload = this._sock.rQshiftStr(length);

        this._supportsFence = true;

        /*
         * Fence flags
         *
         *  (1<<0)  - BlockBefore
         *  (1<<1)  - BlockAfter
         *  (1<<2)  - SyncNext
         *  (1<<31) - Request
         */

        if (!(flags & (1<<31))) {
            return this._fail("Unexpected fence response");
        }

        // Filter out unsupported flags
        // FIXME: support syncNext
        flags &= (1<<0) | (1<<1);

        // BlockBefore and BlockAfter are automatically handled by
        // the fact that we process each incoming message
        // synchronuosly.
        RFB.messages.clientFence(this._sock, flags, payload);

        return true;
    }

    _handleXvpMsg() {
        if (this._sock.rQwait("XVP version and message", 3, 1)) { return false; }