socket在本地连接收发没有有关问题, 连服务器, connect返回值是-1,连接失败

void main()
{
    WORD wVersionRequested;
    WSADATA wsaData;//WSAata用来存储系统传回的关于WinSocket的资料。
    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 sockClient=socket(AF_INET,SOCK_STREAM,0);// AF_INET ..tcp连接
    //初始化连接与端口号
    SOCKADDR_IN addrSrv;
    //addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");//本机地址，服务器在本机开启
    addrSrv.sin_addr.S_un.S_addr=inet_addr("66.147.244.86");//服务器地址，服务器开启
    addrSrv.sin_family=AF_INET;
    addrSrv.sin_port=htons(20000);// 设置端口号
    int iResult = connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));//连接服务器
        printf("iResult = %d\n",iResult);

    char recvBuf[50]={0};
    recv(sockClient,recvBuf,50,0);//接受数据
    printf("%s\n",recvBuf);

    send(sockClient,"hello",strlen("hello")+1,0);//发送数据
    closesocket(sockClient);//关闭连接
    WSACleanup();
}