d115.bmp.txt

Visual C++通信编程工程实例精解(附盘)

memmove(&inAddr,lpAddr,4);
    fO=inAddr.S un.S un b.s bl;
fl=inAddr.S_un.S_un_b.s_b2;
    f2=inAddr.S un.S un b.s b3;
f3=inAddr.S_un.S_un_b.s_b4;
 }
retum 0;
10)添加CChatClient类错误信息函数ErrorReason()。
CString CChatClient::ErrorReason(int tag)
 {
         CString result;
switch(tag)
            {
       case WSANOTINITIALISED:
                    result="A successful AfxSocketlnit must occur before using this API.";
  break;
       case WSAENETDOWN:
                  result="the network subsystem failed";
  break;
       case WSAEADDRINUSE:
                      result="The specified address is already in use";
  break;
        case WSAEINPROGRESS:
                      result="A blocking Windows Sockets callis in progress";
  break;
        case WSAEADDRNOTAVAIL:
                      result="The specified address is not available from the local machine";
  break;
        case WSAEAFNOSUPPORT:
                      result="Addresses in the specified family cannot be used with this socket";
  break;
        case WSAECONNREFUSED:
                  result="The attempt to connect was rejected";
  break;
       case WSAEDESTADDRREQ:
                    result="A destination address is required";
  break;
        case WSAEFAULT:
                         result="The nSockAddrLen argument is incorrect";
 break;
       case WSAEINVAL:
                result="lnvalid host address";
  break;
//5