AsyncTcpSession tcpSession = new AsyncTcpSession();
            public Encoding encoding = Encoding.GetEncoding("gb2312");
            List<byte> senddata = new List<byte>();
            senddata.AddRange(encoding.GetBytes("!Start"));//Start
            senddata.Add(0);//key
            string value = "my clint 123";
            byte[] body = encoding.GetBytes(value);
            uint len = (uint)body.Length;
            senddata.AddRange(BitConverter.GetBytes(len));//Lenght
            uint DeviceUDID = 1;
            senddata.AddRange(BitConverter.GetBytes(DeviceUDID));//DeviceUDID
            senddata.Add(2);//Type
            senddata.AddRange(body);//Body
            senddata.AddRange(encoding.GetBytes("$End"));//End
            Send(senddata.ToArray());
原文:https://www.cnblogs.com/dotnet1990/p/9583364.html