Visual C++实践与提高系列丛书

编码转换,u编码，html编码,utf8-GB,URL编码-code translation

VC写的FTP客户端功能的实现，具有详细的软件设计说明书。-VC wrote the FTP client function of the realization of a detailed software design specification.

WSAAsyncSelect for MFC 下自定义SOCKET事件 替换以前那种通过循环来获知SOCKET事件的方法

聊天程序,很简单的用c++编辑的程序，简单易懂！-Chat program, a very simple to use c++ editing program, easy to understand!

rs232c两机通讯，delphi实现-RS232C communications, achieving delphi

计算校验和 校验和算法描述：为保证网络上传输的数据的可靠性，在许多协议中都设置了校验和项，例如：IPv4、ICMPv4、IGMPV4、ICMPv6、UDP和TCP 等等。计算这些校验和的算法称为网际校验和算法，简单来说就是：把被校验的数据１６位进行累加，然后取反码，若数据字节长度为奇数，则数据尾部补一个字节的０以凑成偶数。 由于从输入文件读入的数据不能直接满足计算校验和的条件，所以首先对从文件读入缓冲区的数据进行预处理，即读入缓冲区时忽略空格。由于累加是按16位进行的，所以每次从缓冲区中读出4个字符，并将字符转换成对应的16进制数字，如此依次累加，直至数据全部读完。 还有一种情况，即如果数据长度为奇数个字节，则需要判断，并补0累加。程序中利用的是缓冲区长度计数器i和当前读取到计数器j判断数据长度是否为奇数。即如果数据长度为偶数，则读完数据时当前读取到计数器j的值应与缓冲区长度i相等，而如果数据长度为奇数，则读完数据时，当前读取到计数器j>缓冲区长度i，此时需将缓冲区中剩余的两个字符读出，并补0，转换成相应16进制数以后参与累加。 当累加结束后，将累加和的16位以上数据位移下再进行一次累加，并对最后累加和取反即得所求校验和。 -calculated checksum checksum algorithm Description : To ensure the network transmission of data reliability, in many of the agreements are set up and calibration, for example : IPv4, ICMPv4, IGMPV4, ICMPv6. UDP and TCP so on. Calculating checksum algorithm called the Internet checksum algorithm, the simple answer is : as has been the calibration data for 16 cumulative, and then take the anti-code, if the data byte length of the odd, data will make up the tai

一个组播发送类， 一个组播发送类。-Send a multicast-type, a type of multicast send.

Buffer封装类，A buffer of memory that takes care of allocating and freeing itself, and has methods for compression and encoding-Buffer Wrapper Class。A buffer of memory that takes care of allocating and freeing itself, and has methods for compression and encoding

用户可以选择谈话对象，选择多种动作，设置字体，悄悄话，过滤信息等-users can choose interlocutors, and multiple moves installed fonts, whispered, filtering information

使用方法： 首先安装winpacp驱动，发送的时候可以选择ARP的TYPE。如果是ARP请求报文，则只要输入要问的IP地址，如果是ARP应答报文则要输入发送端的IP以及对方询问MAC地址对应的IP地址。 最后的发送速度可选参数为：（大小写敏感） fast----------最快 hear---------每60MS一个包（比较适合结合SNIFFER做监听） slowhear---每500MS一个包 auto---------每1秒一个包 slow---------每2秒个包 -Usage: First, install the driver winpacp, send when ARP can choose the TYPE. If the ARP request message, the question as long as the input to the IP address, if the ARP response packet will have to enter the sending end of the IP and MAC address of the other asked whether the corresponding IP address. The final optional parameter for sending speed: (case sensitive) fast fastest hear- a packet every 60ms (SNIFFER make more suitable combination of monitor) slowhear- every 500ms a packet auto- every one seconds a packet slow- every two seconds of packet