Design and Implementation of Simple Communication System in Local Area Network

摘要

This paper uses Microsoft Visual Studio 2008 as development tool, based on the application of the relevant protocols and technology, introducing no server Simple LAN (Local Area Network) communication system's design and implementation. Using broadcasting technology to achieve the notice of being on line and being off line, Use socket for network connections, and apply TCP(Transmission Control Protocol) and UDP(User Datagram Protocol) to transport related instructions and information. The simple LAN communication system-being built can make conversations and transmission of files much more quickly. The system's framework is refined, and it can be done easily. It adopts the design philosophy of OO(object-oriented), and the system has great expansibility and maintainability, we could add the function of voice-enabled chat and video chat according to our needs.