Abstract:This article describes the LAN chat system status, problems and future development goals; server and client implementation, including system design objectives, overall design, requirements analysis, detailed design and system implementation of the relevant content. Compared with traditional mobile phone, phone chat, LAN chats with its unique mode of communication is gradually being well known.
Firstly, the benefits of this system is obvious, it does not pay much costs, as long as can achieve with your friends chat, other communication tools can not match it, you can also resource sharing, mutual transfer. Secondly, the user group, and this is a lot of people choose to implement this system of communication reasons. When you weary of life, or would like to know some new friends, can be achieved through it.
Visual Basic as an object-oriented language, with its wide range of controls to implement network communication, its development model is simple and convenient, powerful features, and advantages of a cross-platform development tools for many programmers, is considered the functions and operations the most comprehensive evaluation of development tools, its unique object-oriented, in the speed, security, portability than a traditional development language is a considerable improvement.
Keywords：VB; chat management; Socket； server； client...