用完成端口实现可扩展的服务器应用

基于Socket的网络服务应用已经使用得相当普遍,诸如创建Socket、侦听/接受连接以及收发数据等方面也有很多经验文档和范例可供参考。然而实现可承受大数据量和连接数的网络服务应用程序还是一件比较困难的事情。最大的问题在于网络服务程序如何解决从单个客户连接处理到多个客户连接处理的可扩展性。在Windows NT和Windows 2000平台上,Overlapped I/O运用“完成端口”(completion ports)来真正实现所谓可扩展的网络应用。“I/O完成端口”(I/O completion ports)和Win-dows SocketS 2.0可实现用于处理大量连接的应用。

Implement the Scalable Server Application with Completion Ports

With the increasing variety of telecommunication business and needs for more and more client connections, the application servers are faced with the challenge of the overload of tremendous requests. On the Windows platform, components programming provides distribution structure at the business level. And at the user level, I/O completion port is a best way for the scalability. In this paper, we describe the way to use IOCP.