这个程序主要实现关于基于TCP UDP的文件传输的,可以在此基础上稍微加以修改就可变为蓝牙传输的功能-The main achievement of this process on TCP UDP-based file transfer may be on this basis can be slightly modified into a Bluetooth transmission function

文件传输代码，包括简单协议分析，重要的网络编程基础-File transfer code, including a simple protocol analysis, network programming foundation