判断IP是否有效

动态刷新IP,对2000局域网有用,没有密码.从VCKbase上Down的.好东西推荐一下.-refresh dynamic IP, LAN useful to 2000, no password. Down from the VCKbase on. Good things can get.

一个通过udp进行通信的例子-Udp communicate through examples

通过arp协议来发现局域网内的所有的当前活动的主机，编译本程序需要安装winpcap驱动以及其开发包，release之后仅仅需要安装winpcap的驱动就可以了-Arp agreement through the LAN to discover all the current activities of the host, the compiler of this procedure will need to install WinPcap driver as well as its development kit, release after only need to install the WinPcap driver can be a

基于UDP协议的socket programming，是Client端的程序，可以作为初学者的学习参考-Based on UDP protocol socket programming, is a Client-side program can be used as reference for beginners to learn

在vistual Basic环境下做的一个tcp调试助手，具有tcp client，tcp server ，以及udp功能，十六进制显示和发送。支持各种波特率下的通讯。-In the vistual Basic environment to do a tcp debugging assistant, with tcp client, tcp server, as well as udp functions, hexadecimal display and send. Supports a variety of baud rate under communications.

UDP穿透Socks5的实现 ，一个封装UDP类，支持Socks5代理,原理可参看rfc1928-UDP Socks5 penetrating the realization of a package like UDP, support Socks5 agent, principle can be found in rfc1928

又一款局域网聊天程序，适用于delphi5,只有用了Rxlib2.75中的两个控件，一个是用来做TrayIcon的(TRxTrayIcon)，还有一个是用来选颜色的(TColorComboBox)， 大家可以到Rxlib专栏中下载这个控件-another model LAN chatting procedures applicable to 3.0-5.0 Only a Rxlib2.75 the two controls, one is used for TrayIcon (TRxTrayIcon), there is an election to the color of (TColorComboBox), Rxlib You can download this column Controls

一个基于winsock的demo程序，包括服务器端和客户端，共同学习交流-Winsock-based demo of the program, including server-side and client, co-learning exchange

采用CSOCKET得到服务器的时间，利用TCP/IP的13端口提供的时间服务，要求提供时间服务的计算机安装简单TCP/IP协议。-CSOCKET used to be a time server using TCP/IP 13 ports for the service, asked for time to install the computer services simple TCP/IP protocol.

可以检测网络状态，包挂是否伤亡，打开生么网址很好-can detect network state, linking packet casualties, the website opened Mody good health