Computer network technology based on Windows network architecture specification...

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

ftdi_sio source code

ASP.NET数据库链接SQL的一些例子,都是很好的我想一定会对您有用的。-ASP.NET SQL database link some examples are very good, I think you will definitely be useful.

程序运行时获取计算机的网卡的mac地址,以便于作为某种标识-running computer access at the LAN mac address, in order to serve as a logo

MiniFTPServer是一个基于控制台的ftp服务器程序，能够实现大部分的FTP的服务器程序；注意：帐号密码为toldo,主目录为C:/temp,在连接之前请先建立-MiniFTPServer is a console based on the ftp server, can be achieved most of the FTP server procedures; Note : toldo account password, home directory to C :/temp, in the post before establishing connections

介绍了Winsock的工作原理及工作流程，结合有线电视网络运营公司的实际情况，设计了一种基于Winsoek的代收费业务网络系统，并给出了关键源代码及在某网络运营公司的实际运行情况．-Introduced the working principle of Winsock and workflow, combined with the cable television network operator the actual situation, design a Winsoek in lieu of charges based on the business network system, and gives a key source code and a network of operating companies in the actual running situation.

取网卡信息程序-Program which can get NIC information

变速恒频双馈风力发电机仿真中很有用的几个模块-Doubly-fed VSCF wind turbine simulation is useful in several modules

在Windows下用VC6.0编的网络火柴棍游戏，包含服务器端和客户端，一次同时开放两个客户端-In Windows, compiled with VC6.0 network matchstick games, including server-side and client-side, one at the same time, opening up two client-side

cmpp协议短信网关Delphi源码,采用DELPHI开发!-cmpp agreement SMS Gateway Delphi source, using DELPHI!