Implementation of P2P Communication Application Based on WinSock

With the development of OA in enterprises,it is important to communicate between departments.Firstly,knowledge of TCP/IP programming interface,Windows Socket in windows are summarized.Secondly,the mechanism of using Socket to implement internet communication in windows environment is analyzed.Then how to design connection-oriented client/server program in Internet application,which is based on Windows Socket is elaborated.Finally a way of immediate communication based on WinSock,which can be used in LAN,is introduced.Then the security of information can be guaranteed,the load of file server can be reduced and the communication flexibility can be greatly increased.