TCP_ser.zip_C Socket TCP Sever_TCP SEVER_tcp

#include <iostream> #include <windows.h> using namespace std; #pragma comment (lib,"ws2_32.lib") void main () { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 2, 2 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { /* Tell the user that we could not find a usable */ /* WinSock DLL. */ return; } /* Confirm that the WinSock DLL supports 2.2.*/ /* Note that if the DLL supports versions greater */ /* than 2.2 in addition to 2.2, it will still return */ /* 2.2 in wVersion since that is the version we */ /* requested. */ if ( LOBYTE( wsaData.wVersion ) != 2 || HIBYTE( wsaData.wVersion ) != 2 ) { /* Tell the user that we could not find a usable */ /* WinSock DLL. */ WSACleanup( ); return; } /* The WinSock DLL is acceptable. Proceed. */ /////////////////////////////////////// SOCKET sockSer; sockSer=socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN addrSer,addrCli; addrSer.sin_family= AF_INET; addrSer.sin_port=htons(5050); addrSer.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); bind(sockSer,(SOCKADDR*)&addrSer,sizeof(SOCKADDR)); listen (sockSer,5); SOCKET sockconn; int len=sizeof(SOCKADDR); cout<<"server wait client connect......"<<endl; sockconn=accept(sockSer,(SOCKADDR*)&addrCli,&len); if(sockconn == INVALID_SOCKET) { cout<<"server accept client connnect fail!"<<endl; return ; } else { cout<<"server accept client connnect success!"<<endl; } char sendbuf[256]; char recvbuf[256]; while(1) { cout<<"Ser:>"; cin>>sendbuf; if(strcmp(sendbuf,"quit")==0) { break; } send(sockconn,sendbuf,strlen(sendbuf)+1,0); recv(sockconn,recvbuf,256,0); cout<<"Cli:>"<<recvbuf<<endl; } closesocket(sockSer); WSACleanup(); }