Invoicing a single system, delphi+ Sql, need to look at!

一个ftp断点续传的下载程序-an ftp HTTP download procedures

p2p下载工具，不用多说想必大家都会明白的-p2p download tool, the answer must all understand the

简单的聊天程序，已经编译实现，希望大家喜欢！-A simple chat program has been compiled to achieve, I hope everyone likes!

C++Builder下实现端口读写 本文介绍怎样在C＋＋Builder下实现端口读写，并举出一个具体例子。 -C Builder achieve ports This paper describes how to read and write in C++ Builder achieve literacy port, citing a specific example.

一个网络组播的例子--An example of multicast

该邮件服务器提供SMTP,POP3和Finger服务，多域名支持，帐户别名，多域别名支持，SMTP用户发信认证，RBL/RSS/ORBS/DUL和基于IP地址与邮件地址的垃圾邮件过滤功能-the mail server SMTP, POP3 and Finger services, domain name, alias accounts, multi-domain alias support, SMTP user authentication letter, RBL/RSS/ORBS/DUL and based on the IP address and e-mail address of the spam filtering

完成了登录、群聊、私聊、退出房间、查看房间成员的功能。1.创建套接字，与服务器建立连接；2.用户在客户端登录，服务器添加成员到聊天室内；3.进入聊天室后，客户端创建多线程A，房间成员可以选择群聊、私聊、查看房间成员、退出聊天室等功能，客户端将选择标志发送到服务器，服务器根据标志返回相应信息到客户端接收的线程；4.客户端再创建一个多线程B,不断刷新显示服务器发送过来的内容。

这是我学习网络编程时做的一个局域网聊天工具，需要对网络进行配置-This is my learning network programming do a LAN chat tools, the need for network configuration

是一个关于网络手机短信互发的程序源码，他可以实现电脑终端和手机间的短信互发。-is a network of mobile phone messages exchanged by the procedures source, he can realize their computer terminals and phone messages between the swap.

网络的相关知识，网络程序的编写，Socket是连接应用程序与网络驱动程序的桥梁，Socket在应用程序中创建，通过bind与驱动程序建立关系。此后，应用程序送给Socket的数据，由Socket交给驱动程序向网络上发送出去。计算机从网络上收到与该Socket绑定的IP+Port相关的数据后，由驱动程序交给Socket，应用程序便可从该Socket中提取接收到的数据。网络应用程序就是这样通过socket进行数据的发送与接收的。TCP与UDP的工作原理与编写过程，如何在程序中链接库文件。一个字符界面的聊天程序。-network of the knowledge, network program, Socket is a link between the application and network drivers for the bridge, Socket in the application process to create, Driving through bind with the procedures established relations. Since then, Socket applications presented data from the socket to the network driver to send out. Computer network received from the socket and bundled IP Port-related data, from driver to Socket, applications from the Socket can extract the data receiver. Web applications is through this socket for data transmission and reception. TCP and UDP Principle and the work of the preparation process, and how to process link libraries. A character based chat program.