一个服务器端，两个客户端：student和teacher两者权限不一，更能不一；能进行简单的选课、发送通知等功能...

网络编程的一些例子，包括udp与tcp,是学习socket的好工具-network programming examples include the tcp and udp, the socket is a good learning tool

使用HTTP协议将文件下载到Windows的下载文件临时目录的程序源代码。-use HTTP protocol can be downloaded to the Windows temporary directory download the source code.

udp穿透SOCK5协议,穿透NAT,相信对大家有些用处-udp penetrating SOCK5 agreement, NAT penetration, we believe that the usefulness of some

直接用socket实现http协议.值得初学者学习借鉴-Directly achieve the http protocol socket. Worthwhile for beginners to learn from

基于jxta的P2P框架的系统，主要功能有局域网聊天、文件共享系统、白板等-base on jxta

基于Socket TCP的网络文件传输例子，比较精练，简单易懂，对网络编程入门者有参考作用。-based on Socket TCP network file transfer example, more concise and easily understood. Network Programming for beginners as a useful reference.

RAS高级编程是一个RAS拨号程序高级开发，通过该程序不经能够实现电话拨号功能，还能实现如adsl、网通等拨号功能，还能够监控modem或者网卡的网络流量，绝对是一个值得读者学习的程序。-RAS high-level programming is a RAS digit dialing procedure high-level development, after cannot realize the telephone digit dialing function through this procedure, but also can realize like adsl, the net passes and so on the digit dialing function, but also can monitor modem or the net card network current capacity, absolutely is the procedure which is worth the reader studying.

局域网查询工具的源代码 是学习多线程编程。Windows API Helper wincap 编程的好例子，大家一定不要错过了!-Local area network query tool is to learn the source code for multi-threaded programming. Windows API Helper wincap a good example of programming, we must not miss!

取得计算机网卡物理地址的步骤：1）列举所有的网卡2）分别重置每块卡以取得它的正确信息3）查询网卡，取得MAC地址-made computer card physical address steps : 1) lists all the card 2), respectively replacement every piece of card to obtain the correct information 3) card inquiries made MAC address

C#中连接GPRS 并向服务器发送信息的实验-C# Connect GPRS to send messages to the server Experimental