vc用socket实现客户端服务端通信

//server

#include <Winsock2.h>
#include <stdio.h>

void main()
{
     WORD wVersionRequested;
     WSADATA wsaData;
     int err;
 
     wVersionRequested = MAKEWORD( 1, 1 );
 
     err = WSAStartup( wVersionRequested, &wsaData );
     if ( err != 0 ) {
    
    return;
    }
 

 
     if ( LOBYTE( wsaData.wVersion ) != 1 ||
        HIBYTE( wsaData.wVersion ) != 1 ) {
                                    
     WSACleanup( );
     return; 
 }
 SOCKET sockSrv=socket(AF_INET,SOCK_DGRAM,0);

 SOCKADDR_IN addrSrv;