Method _readData

systemvm/agent/noVNC/core/decoders/tight.js:357–385

(sock)

    }

    _readData(sock) {
        if (this._len === 0) {
            if (sock.rQwait("TIGHT", 3)) {
                return null;
            }

            let byte;

            byte = sock.rQshift8();
            this._len = byte & 0x7f;
            if (byte & 0x80) {
                byte = sock.rQshift8();
                this._len |= (byte & 0x7f) << 7;
                if (byte & 0x80) {
                    byte = sock.rQshift8();
                    this._len |= byte << 14;
                }
            }
        }

        if (sock.rQwait("TIGHT", this._len)) {
            return null;
        }

        let data = sock.rQshiftBytes(this._len, false);
        this._len = 0;

        return data;
    }

    _getScratchBuffer(size) {
        if (!this._scratchBuffer || (this._scratchBuffer.length < size)) {