源码使用了高级的完成端口（IOCP）技术，该技术可以有效地服务于多客户端。代码封装了IOCP并提供了一个简单的echo版本的可以传输文件的客户端/服务器程序-Source used to complete the advanced port [IOCP] technology, which can effectively serve many clients. IOCP code encapsulates and provides a simple version of the echo can