Sendfile

IOCP基本原理介绍，主要介绍了如何使用IOCP进行开发。(Introduce the basic principles of IOCP, mainly on how to use IOCP for development.)

A simple DNS auditing tool

该demo是基于springmvc的websocket聊天系统，结合html5实现在线聊天，包含注解和基于Websocket.jar两种方式。

asp.net rewriter,可以配置成httpmodule和httpHandle.-asp.net rewriter, can be configured into httpmodule and httpHandle.

这是一个界面和操作简单的天气查询工具。可以自动根据IP地址获取天气信息；可以自动定时提醒；可以显示日历信息；可以自定义皮肤等。

计算下行功分复用的归一化传输速率。UE1远端，UE2近端。(To calculated the normalized sum rate of Power division multiple access (PDMA), two users. )

WinPcap中文帮助手册，网络编程必备帮助文档，包含了大量的函数。(WinPcap Chinese help manuals, network programming necessary to help document, contains a large number of functions.)

httpclient source code by csharp

客户端的聊天内容通过json格式封装(包含聊天内容、发送人信息)之后，HTTP请求百度服务器，即请求把该消息发送到指定id的用户，请求成功之后，百度服务器就把我们的信息转发给指定的用户，对应用户再解析json格式的信息，就可以知道该消息来自何处，以及消息内容。(Chat client via json format package (includes chat, sender information), after, HTTP requests Baidu server, which sends the message to the requesting user specified id, after the request is successful, Baidu server took our information forwarded to the designated users, the corresponding user information and then parse json format, you can know that the message came from, and message content.)

端口扫描java小程序 能够扫描端口并查看端口是否开启-Port scanning java applet to scan ports and see whether the port is open