基于TCP的多人聊天小程序，有服务器跟客户端

Following the development of network and communication technology, traditional telecommunication network meets with great challenges currently. In order to overcome the disadvantages of traditional telecom network, next generation network was put forward in recent years, which bases on IP packet network and soft-switch technology is used. The same problem is also existed in power communication system, so how to build next generation communication system become more and more important.

初学的时候做的一个聊天系统，可以多人，可以检测IP等-Learning when to do a chat system that people can detect the IP, etc.

windows API（非MFC） 组播代码-windows API (non-MFC) multicast code

主要修改了以下地方： 1、整理了后台，增加了系统设置功能，现在不用改网站页面就可以使用了此程序了 2、友情链接后台管理功能。考虑到大家很懒，就加上后台管理链接功能 3、对相册上传安全增加了点安全措施，只允许上传jpg,gif文件 4、修改了大量原1.0程序中的错误，现在没有内容时也不会出现错误 5、修改了金钱交易地方的漏洞-main changes the following places : one, compiled background, the increase in system setup functions now without changes to pages on the site can use this procedure the two, Links background management functions. Taking into consideration your pretty lazy, with background on the management functions of the three links, upload photos to a point increase security measures, allowing only upload jpg, gif four documents, a large number of amendments to the original 1.0 procedural errors were made, there is no content there will be no mistakes 5, revised the payment money transactions where the loopholes

tcpip协议实现，包括很多协议实现-tcpip protocol implementation, including the realization of a lot of agreement

netmeeting的SDK，开发语音视频聊天室的好东西！这个SDK网上不好找，里面有很多的SAMPLE！-The NetMeeting SDK, the development of voice and video chat rooms good things! This SDK不好找online, which has a lot of SAMPLE!

利用socket编程，UDP协议，实现数据收发-The use of socket programming, UDP protocol, data transceiver

可以清晰了解TCP/IP，UPD协议中，每个包所包含数据的含义等，包括每一帧数据的头，校验等，解码的数据让你清晰了解底层通讯的机制。非常珍贵。

FTP的客户端，用户可以能过FTP的客户端来实现FTP文件的管理等-FTP client, users can lead FTP client to achieve the FTP file management

本程序主要功能有：“现金管理”、“存款管理”、“债权管理”、“债务管理”这4个功能。 服务器需开启SQLite和SQLite PDO Driver。（PHP5以后的版本都自带了SQLite） 在inc.php中可以修改数据库地址和管理员密码。-The main function of this procedure are as follows: "cash management", "deposit-taking management," "debt management", "debt management" in this function 4. Servers need to open a SQLite and SQLite PDO Driver. (PHP5 own future versions of SQLite) Inc.php can be modified in the database address and an administrator password.