多线程网络文件传输系统的设计与实现
学 生：
指导教师：
摘 要：文件传输是因特网上最常用的服务之一，多线程文件传输能有效地提高文件传
输的速度和效率，本系统采用 windows socket 实现，套接字可以看成是两个网络应用程
序进行通信时，各自通信连接中的一个端点。系统分客户端软件和服务器端软件两部分，
同时需要用到多线程相关知识，一个应用程序可以同时有多个线程一起运用 CPU 的资源，
大大的加强对 CPU 的利用率，同时也从另一个方面加快了传输的速度。由于 TCP/IP 连
接协议的服务是设计客户端/服务器应用程序时的主流标准，所以本软件主要采用
TCP/IP 协议的网络通信技术；客户端，服务器类是从 CAsyncSocket 类中继承来的，
因此本软件通信完全是异步的；程序在 Windows XP 系统、Visual C＋＋6.0 下编译通
过，且运行良好。
关键词：文件传输 套接字 多线程
Abstract ： File transfer is one of the most commonly used services on the Internet, a
multi-threaded file transfer can effectively improve the file transfer speed and efficiency,
this system use the Windows sockets implementation, Socket can be regarded as two
network applications for communications, each an endpoint of communication.Client
software and server software system points two parts, the need to use multithreading
knowledge at the same time, an application can have multiple threads at the same time
with the use of CPU resources, greatly strengthen the CPU utilization, but also from
another aspect to speed up the transmission speed.As TCP/IP agreement linking the
service is designed client / server application procedures for the mainstream standards,
Therefore, the software used mainly TCP/IP agreement network communication
technology; client, server from CAsyncSocket inherited category, and therefore the
software is completely asynchronous communi- cation; procedures in Windows XP
system and under Visual C + + 6.0 compiler，and Running well
