一种基于UDP协议的可靠传输机制研究

UDP-Based Reliable Transmission Mechanism

可靠数据传输是网络的一项重要应用。虽然TCP协议提供面向连接的可靠的字节流服务，但TCP协议的拥塞控制策略并不能高效公平的利用可用带宽，这不能满足对在低速网络下需要一定带宽支持的网络应用的需求。而UDP协议具有效率高、速度快和占用资源少等优点，但其面向事务的简单不可靠数据传输服务机制不能满足应用对可靠性的需求。本文对可靠数据传输技术进行了研究，在此基础上设计了一个基于UDP的可靠数据传输的机制。

Reliable data transmission is an important network applications.Although the TCP protocol provides reliable connection-oriented byte stream service,but the congestion control of TCP is not efficient and equitable use of available bandwidth,which can not meet the needs of the low-speed network under a certain bandwidth to support network applications.The UDP protocol has a high efficiency, speed and small footprint,etc.,but the simple transaction-oriented data transfer service is not reliable mechanism can not meet the application requirements for reliability.In this paper,reliable data transmission technology have been studied on the basis of the design of a reliable UDP-based data transfer mechanism.