信息简介:UDP协议,即拥护数据报协议(Use Datagram Protocol).是一个简单的面向数据报的传输层协议.他不提供可靠性,即只把应用程序传给IP层的数据发送出去,但是并不能保证他们能到达目的.广播和多播是基于UDP协议的两种消息发送机制.广播数据即从一个工作站发出,局域网内的其他所有工作站都能收到它.IP协议下,多播是广播的一种变形,IP多播要求将对收发数据感兴趣的所有主机加入到一个特定的组.-Information About: UDP protocol, that is, support for Datagram Protocol (Use Datagram Protocol). Is a simple datagram-oriented transport-layer protocol. He did not provide the reliability, that is, only the IP layer of the application to pass the data to send out, But there is no guarantee that they can arrive at the destination. broadcast and multicast UDP protocol is based on two kinds of message delivery mechanism. broadcast data sent from a workstation, all other stations within the LAN can receive it. IP agreement, multicast is a variant of the broadcast, IP multicast send and receive data requests will be of interest to all hosts to join a particular group.