package com.ice.structure.Decorator; /** * @author ice * @blog https://blog.csdn.net/dreaming_coder * @description * @create 2021-10-29 19:45:41 */ public abstract class TransportLayer implements Datagram{ protected Datagram appData; public TransportLayer(Datagram appData) { this.appData = appData; } public void send() { appData.send(); } }