Csocket 程序客户端和服务器端

//--------------------------------------------------------------------------- #pragma hdrstop #include <stdio.h> #include <winsock2.h> #define TRUE 1 //--------------------------------------------------------------------------- #pragma argsused int main(int argc, char* argv[]) { int sock,length; struct sockaddr_in server; struct sockaddr tcpaddr; int msgsock; char buf[1024]; int rval,len; //initialization socket WSADATA wsaData; WSAStartup(MAKEWORD(2,0),&wsaData); //create new socket sock=socket(AF_INET,SOCK_STREAM,0); if(sock<0) { perror("opening stream socket"); printf("sock=%d\n",sock); getch(); exit(1); } //bind the socket server.sin_family=AF_INET; server.sin_addr.S_un.S_addr=inet_addr("172.17.26.69"); server.sin_port=htons(5000);//INADDR_ANY; if(bind(sock,(struct sockaddr *)&server,sizeof(server))<0) { perror("binding stream socket"); printf("lasterror: %d\n",WSAGetLastError()); getch(); exit(1); } length=sizeof(server); if(getsockname(sock,(struct sockaddr *)&server,&length)<0) { perror("getting socket name"); getch(); exit(1); } printf("socket port # %d\n",ntohs(server.sin_port)); //listen socket listen(sock,5); len=sizeof(struct sockaddr); do { printf("gogo"); msgsock=accept(sock,(struct sockaddr *)&tcpaddr,(int *)&len); printf("msgsock=%d\n",msgsock); if(msgsock==-1) perror("accept"); else do { memset(buf,0,sizeof(buf)); if((rval=recv(msgsock,buf,1024,0))<0) perror("reading stream message"); if(rval==0) printf("ending connection \n"); else printf("---->%s\n",buf); }while(rval!=0); closesocket(msgsock); }while(TRUE); getch(); return 0; } //---------------------------------------------------------------------------