Internet文件下载

聊天程序的源码，对学习socket编程很有帮助。(Chat program source code, useful for learning socket programming.)

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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)

无连接的VC++网络通信 源代码，输入本机端口号、目标端口号、目标机IP地址，可以发送消息，并不建立连接。(Connectionless network communications VC++ source code, enter the local port number, destination port number, destination IP address, you can send a message, does not establish a connection.)

网络活动主机和开放端口扫描源程序，含开发文档，基于C#的rawsocket开发，支持 多线程 支持ARP，ICMP协议的活动主机扫描，支持TCP connect syn fin 三种方式的开放端口扫描，支持udp端口扫描(Networking activities, the host and open source port scan, including the development of the document, based on the C# The rawsocket development, support for multi-threaded support for ARP, ICMP scanning hosting agreement to support the TCP connect syn fin three ways of opening up port scanning, support udp port scan)

说明：  网络安全与密码学技术，用qt作为界面，利用md5算法实现的文件防篡改程序。(Network security and cryptography, using qt as an interface, use the file md5 algorithm tamper program.)

用socket编程实现点对点通信，TCP客户端程序，TCP服务器程序，以及UDP点对点聊天通信。(Point to point communication, TCP client, TCP server, and UDP peer chat communication socket programming.)

本opc server工具可用于各种opc的调试环境(This tool can be used for a variety opc server opc debugging environment)

基于ICMP协议的ping程序设计实验基于ICMP协议的ping程序设计实验(Based on the ICMP protocol ping program designed experimental program designed experiments based on the ICMP protocol ping)

raw socket编程，探测网络包。 vc++, win2000测试通过。(raw socket programming, detect network packets. vc++, win2000 test passed.)