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卫星网络仿真，在opnet环境下开发调试通过 (Satellite network simulation, in the OPNET environment through the development of debugging)

VC++实现类似于QQ文件传输功能的文件发送与接收程序示例，分为服务端和客户端，客户端首次接收数据，将判断文件包大小，数据包中一定包含完整的数据包结构信息，数据不一定完整；读取数据包的大小，包含数据包结构大小和数据大小，之前接收的数据与现在接收的数据能够构成至少一个完整的数据包，文件接收完毕则设置结束标记，若终止的连接，则弹出窗口告诉用户，对方终止了文件传送。 　　服务端程序是比较简单的，基本是复制文件数据、判断文件是否传递成功、等待对方收受发送任务或取消发送任务，分包继续发送文件等功能(VC++ implementation is similar to QQ file transfer capabilities to send and receive files program examples, divided into server and client, the client receives the first data packet to determine the file size, the packet must contain the complete information packet structure, the data is not must complete reading packet size, including the size and structure of the data packet size, and previously received data received data can now constitute at least one complete packet, the file has been received then set the mark, if the connection is terminated, the pop-up window telling the user, the other party to terminate the file transfer. Server program is relatively simple, basically copying the file data, to determine whether the file transfer is successful, waiting for the other to accept or cancel the sending task sends tasks, subcontractors continue to send files and other functions )

基于udp实现可靠传输的原理实现了一个简易的邮件系统。存储利用文件来实现，不涉及数据库。(Udp achieve reliable transmission based on the principle of achieving a simple mail system. Storage of papers to achieve, does not involve a database.)

实现网络聊天功能的软件源代码。实现网络聊天功能的软件源代码(Realize network chat software source code. Realize network chat software source code)

说明：  理解局域网的定义、特点 了解局域网的介质访问控制方法 了解以太网技术 了解局域网组网类型(Understand the definition of LAN and characteristics about LAN Ethernet media access control approach to understanding the technical understanding of LAN networking types)

第1章 计算机网络体系结构 第2章 NetBIOS编程户端 第3章 重定向器、邮槽和管道 第4章 网络协议TCP/IP 第5章 局域网编程 第6章 Winsock基础 第7章 Winsock API高级编程 第8章 MFC Winsock高级编程 第9章 深入UDP 第10章 WinInet API开发 第11章 网络协议实现及应用 第12章 综合实例( Chapter 1 Computer Network Architecture Chapter 2 NetBIOS programming client households Chapter 3 redirector, and pipelines Mailslot Chapter 4 Network Protocol TCP/IP Chapter 5 LAN Programming Chapter 6 Winsock basic Chapter 7 Advanced Programming Winsock API Chapter 8 Advanced MFC Winsock Programming Chapter 9 in depth UDP Chapter 10 WinInet API development Chapter 11 Network Protocol implementation and application of Chapter 12 General Example)

在vc++下通过ip端口抓取数据包，获取音频数据进行处理(In vc++ crawl through the ip port packet)

一个网络后门程序。演示了通过Http通道的功能穿透安全级别非常高的防火墙，甚至硬件防火墙。()

中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。 本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。 本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。 设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。 对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。(induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW)

NAT(Network Address Translators)，网络地址转换：网络地址转换是在IP地址日益缺乏的情况下产生的，它的主要目的就是为了能够地址重用。NAT分为两大类，基本的NAT和NAPT(Network Address/Port Translator)。(The principle and implementation of UDP NAT through P2P )