本书第一部分讲述的是传统的网络接口N e t B I O S、重定向器以及通过重定向器进行的各类网络通信。尽管本书大部分内容均围绕Wi n s o c k编程这一主题展开，但是，A P I比起Wi n s o c k

来，仍然具有某些独到之处。其中，第1章探讨的是N e t B I O S接口，它和Wi n s o c k类似，也是

一种与协议无关的网络A P I。N e t B I O S提供了异步调用，同时兼容于较老的操作系统，如O S / 2

和D O S等等。第2章讨论了重定向器的问题，它是接下去的两个新主题—邮槽（第3章）和

命名管道（第4章）的基础。重定向器提供了与传输无关的文件输入／输出方式。邮槽是一种

简单的接口，可在Wi n d o w s机器之间实现广播和单向数据通信。最后，命名管道可建立一种双向信道，这种信道提供了对Wi n d o w s安全通信的支持。-The first part of the book tells the story of a traditional network interface N et BIOS Redirector redirector various types of network traffic. Although most of the contents of this book are around Wi nsock programming this theme than Wi nsock to, but, API still has some unique. The first chapter discusses N et BIOS interface, it and Wi nsock similar, also a protocol-independent network API. N et BIOS provides asynchronous call, at the same time compatible with the older operating system, such as OS/2 and DOS. Chapter 2 discusses the redirect problem, it is the two new theme- Mailslot (Chapter 3), and named pipes (Chapter 4), the basis of next. The redirector has nothing to do with the transmission file input/output mode. A mail slot is a simple interface, broadcast and one-way data communications between Wi ndows machine. Finally, Named Pipes to establish a two-way channel, this channel provides support for Wi ndows secure communications.