public abstract class ServerPacket : AuthPacket
    {
        public ServerPacket() : base()
        {
            var att = GetType().GetCustomAttribute<AuthOpcodeAttribute>();
            if (att == null)
                return;//error needed

            var header = new AuthPacketHeader(att.Opcode, att.Channel);
            SetHeader(header);
        }

        public abstract void Write();
        public byte[] GetData() { return Stream.GetData(); }
    }