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简单的asp会员管理系统
希望各位喜欢这个程序。
简单的asp会员管理系统
希望各位喜欢这个程序。-simple asp Member Management System I hope you like this procedure.
- 2022-03-15 13:56:30下载
- 积分:1
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window,linux下http,ftp接口库
window,linux下http,ftp接口库-http,ftp lib for window and linux
- 2022-01-25 19:04:05下载
- 积分:1
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一个类似于MSN的P2P的信息传递的例子
一个类似于MSN的P2P的信息传递的例子--This is an example of P2P information transferring which is similar to that in MSN
- 2022-01-21 22:41:46下载
- 积分:1
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PE executable files into the type of correction procedures and sample preparatio...
PE可执行文件的镶入式程序的编写方法及示例。注意:编译时注意安全。-PE executable files into the type of correction procedures and sample preparation methods. Note : compile-time pay attention to security.
- 2022-02-05 23:57:04下载
- 积分:1
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用vc编写的简单聊天室,用winsock写成,适用vc6.0及以上
用vc编写的简单聊天室,用winsock写成,适用vc6.0及以上-vc prepared with a simple chat room, using winsock languages, and above applies vc6.0
- 2022-02-15 19:55:50下载
- 积分:1
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revenue source SSL protocol, welcome to download, but only with learning! !
开源SSL协议源码,欢迎下载,但是仅供学习之用-revenue source SSL protocol, welcome to download, but only with learning! !
- 2022-12-30 09:25:09下载
- 积分:1
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完整串口通信程序Vc++源代码,能够实现windows下的串口通信。
完整串口通信程序Vc++源代码,能够实现windows下的串口通信。-Integrity of the serial communication program Vc++ Source code, to realize the serial communication under windows.
- 2022-05-07 02:00:17下载
- 积分:1
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跨平台的最轻量级socket的c++库,支持windows,linux,solaris
跨平台的最轻量级socket的c++库,支持windows,linux,solaris-cross-platform of the most lightweight c socket library, support for Windows, Linux, Solaris
- 2023-01-08 02:25:02下载
- 积分:1
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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...
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
- 2022-01-26 06:39:03下载
- 积分:1
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利用VC++6.0编写串口发送程序
利用VC++6.0编写串口发送程序-VC 6.0 Serial prepared to send a program
- 2022-01-21 19:09:02下载
- 积分:1