一个小型协议栈，里面有ARP，UDP，广播包的处理的等等，适合嵌入式开发小型网络处理-A small protocol stack, there are ARP, UDP, broadcast packet handling, etc., suitable for the development of embedded system for small network processing

tun驱动程序实现了虚拟网卡的功能，利用tun驱动可以实现linux 下虚拟网卡的创建与管理。-tun/tap driver implements a virtual NIC functionality, tun represents a virtual point to point device, tap represents a virtual Ethernet devices, both devices for network packet implement different pack

基于QT5.5.1的socket TCP协议通信示例，包含客户端与服务端，实现了多线程、心跳机制、断线重连，数据简单封包（防止粘包）等必备技巧，已经封装为独立的类，可以移植性强，只需要添加自己的数据解析与处理即可直接使用。-Based on QT5.5.1 socket TCP communications example, including client and server, realize multithreading, heartbeat, break line, simple dat