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科隆2服务端源码.....请大家下载修改,BUG多(Cologne 2 server ..... please everyone download the source code modifications, BUG more)

本书主要介绍了如何用API函数进行网络间通信(The book introduces how to use the API function communication networks)

该程序简单介绍了如何创建局域网的C/S工作模式，简单可靠。(The simple procedure describes how to create LAN C/S mode, simple and reliable.)

TCP端口扫描，可以获得指定IP段内的主机名，mac地址，存活端口，并将这些信息保存在SQLITE数据库，下次可以直接读取数据库信息，移值性好！(CP port scan, you can get within the segment specified IP host name, mac address, survival ports, and the information stored in the SQLITE database, the next can be read directly, transfer value is good!)

一段TCP和UDP通讯的程序，包含了服务器端和客户端的代码。(Some TCP and UDP communication procedures, including server and client code.)

黑客攻防入门书籍 很好很强大 讲了各种攻击方法(Getting Started with a very good offensive and defensive hacking books, talk about a variety of very strong attack methods)

守候远程控制VC++源码，任意开源。已在XP下编译通过并运行。(Waiting for remote control of VC++ source code, any open-source. Has been compiled by and run under XP.)

Pop3客户端接收信件的整个流程： 1。连接到pop3服务器（默认端口110） 2。发送用户名（user） 3。发送密码（pass） 4。查询当前邮箱状态（stat） 5。查询服务器上所有邮件UID列表（UIDL） 6。查询本地所有邮件的UID列表，从而罗列出新邮件列表（本地UID列表是POP3客户端记录在日志文件中的） 7。对所有新邮件查询其大小（LIST） 8。下载所有新邮件（RETR）利用List提供的邮件大小信息 9。如果有必要，对所有新邮件标志为删除（DELE） 10。结束对话（QUIT） 11。解析本地下载邮件。(Pop3 client receives the entire flow of letters: 1. Connect to the pop3 server (default port 110) 2. Send user name (user) 3. Send password (pass) 4. Query current mail status (stat) 5. Query server UID list of all messages (UIDL) 6. Query local UID list of all messages, which set out the new mailing list (local UID is a POP3 client list recorded in the log file) 7. For all new e-mail inquiries about their size (LIST) 8. Download all new messages (RETR) to use List of information provided by message size 9. If necessary, for all new signs for the delete message (DELE) 10. The end of the dialogue (QUIT) 11. Analysis of local download your mail.)

检测NAT类型的客户端，程序中指定了服务器IP地址，用户可以自行修改(Detect NAT type of the client, the program specifies the server IP address, the user can modify)

说明：  这是非常好的关于网络编程的例子，实现了ping程序，对于学习网络编程的人员来说是非常难得的材料。(It is a very good example of programming on the network to achieve the ping process, for learning network programming staff is very rare material.)