d097.bmp.txt

Visual C++通信编程工程实例精解(附盘)

l
else
{
if(nErrorCode= WSAEWOULDBLOCK)
{
MessageBox(”网络侦听错误∽；
m_SocketServer.Close0;
retum;
}
BYTE al, a2, a3, a4;
m_IP.GetAddress(al, a2, a3, a4);
m_ServerAdr.Format("%d.%d.%d.%d", al, a2, a3, a4);
m_SocketClient.ShutDown(2);
m_SocketClient.Rest0;
／，建立计时器，每0.5 s尝试连接一次，直到连上或TryCount>10
 SetTimer(l, 500, NULL);
TryCount=0;
    这里，在客户机连接服务器过程中建立计时器，每0.5 s尝试连接一次，直到连上或尝
试连接次数大于10次为止。所以，还需要添加WMTIMER事件处理函数。
void CLANServerClientDlg::OnTimer(UINT nIDEvent)
{
            // TODO: Add your message handler code here and/or call default
           if (m_SocketClient.m_hSocket == INVALID_SOCKET)
          {
      BOOLbFlag=m_SocketClient.Create(0, SOCK_STREAM, FD_CONNECT);
                             if( !bFlag)
                    {
          MessageBox("冈络败 !");
m_SocketClient.Close0;
 KillTimer(l);
  return;
                    }
          }
         m_SocketClient.Connect(m_ServerAdr, m_Port);
TryCount++;
         if (TryCount >=10 11 m_SocketClient.lsConnect(》
          {
KillTimer(l);
                             if (TryCount >=10) AfxMessageBox("Connect Failed ! ");
 return;
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