UPD 是USER DATAGRAM PROTOCAL 的简称，是一种在网络上提供的无连接的传输协议。用UDP通信有以下特点： 　　1、 数据传输不用建立连接，所以不可靠；



　　2、 数据的发送是面向整个网络的，任何一台在局域网内的计算机都可以接收到相同的数据；



　　具体实现很简单，但是现在在网络上很少看到这方面的代码；我也参考了VCKBASE上的关于UDP通信的原代码和一些书籍，写了这个简单的客户端，接收端程序，起到抛砖引玉的作用，希望能给初次接触UDP之BROADCAST编程的同志一些参考。

-UPD DATAGRAM PROTOCAL USER is the acronym, the network is available on the connectionless transport protocol. UDP communication with the following characteristics : 1, data transmission not connect, it is not reliable; 2. the data is sent across the network for any one of the LAN computers can receive the same data; specific Implementation is simple, but now the network rarely see the code; I have made reference to the VCKBASE the UDP communications on the original code and some books, was this simple client, receiving end procedures, the role played congregate, in hopes of giving the initial contact UDP Zhi BROADCAST programming comrades some reference.