这是一个FTP文件的源码，用于煤矿安全生产监控联网数据传输的，服务器是马平公司的，在山西，安徽有使用...

点到点协议是为在两个对等实体间传输数据包建立简单连接而设计的。这种连接提供了同时的双向的全双工操作。-Point-to-point agreement is for two pairs of entities such as the establishment of inter-transmission packets designed for simple connection. This connection provides a simultaneous two-way full-duplex operation.

通过ftp自动升级程序，pb6.5以上可以打开-Ftp automatically through the upgrade process, pb6.5 can open more than

（利用GIF_LZW算法实现的）网络图片传输 技术特点 ~~~~~~~~ 一、使用TCP协议传输数据。理由：稳定性好。 二、使用字节数据流进行传输，理由： A:VB的String存在自动Unicode转换问题，影响速度； B:可以直接发送8位字节数据，不需要使用Base64编码，从而减少了编码时间。 三、使用GIF-LZW压缩算法压缩图像。理由： A:行程编码、Huffman压缩算法压缩率太低； B:JPEG压缩算法需要太多位运算，且运算量大（有专门MMX优化算法），不利于VB实现； C:GIF-LZW压缩算法压缩率较好，且我已想出VB语法下高效GIF-LZW压缩/解压算法。 四、使用“有序抖动”算法进行 色彩量化。理由：“有序抖动”处理的结果具有一定规律性，有助于LZW类算法压缩。-(using GIF_LZW algorithm) picture transmission network ~~~~~~~~ a technical features, the use of TCP to transmit data. Reason : good stability. Two, the use of byte data stream for transmission, reasons : A : VB String exist automatically Unicode conversion, the impact speed; B : can directly send eight bytes of data and do not need to use Base64 encoding, thereby reducing the coding time. 3, the use of GIF- LZW compression algorithm for image compression. Reason : A : itinerary coding, Huffman compression algorithm compression rate is too low; B : JPEG compression algorithm needs much-bit computing, and large amount of computation (with MMX spe

一个基本的点对点聊天室,先启动服务程序,然后启动客户端,-a basic peer-to-peer chat rooms, first launching the service procedures, then start the client,

这是一个邮件收发程序,能完成邮件的收发功能-This is a mail procedures can be completed incoming and outgoing e-mail function

一份学习vc下的网络编程，同时了解网络下载原理的实验程序-A learning network programming under vc, at the same time understand the principles of the network to download the experimental procedure

Windows Sockets规范及应用Windows网络编程接口-Windows Sockets specifications and the Windows Application Programming Interface Network

VC编的提高的客户端程序-VC series of the enhanced client

这是一份实验报告，是关于路由器的trace的，做的时候还是有点困难，做完了收获很大，供大家参考了，-this experiment is a report on the trace router, or the time to do a bit difficult to finish a very fruitful, for your reference.

用winsock进行有连接，无连接的通信-Carried out with winsock connection, connectionless communications