public RtcpProtocol() { _buff[0] = 0x81; //V,P,RC _buff[1] = 0xc9; //PT _buff[2] = 0x00; //length _buff[3] = 0x07; //length _buff.Write(4,Id); //SSRC of packet sender _ssrc = (uint)Utils.Random.Next(); _ssrc ^= Id; }