CAsyncSocket进行UDP通信

客户端代码：

CString    m_ServerIP;
CString    m_ClientIP;
int    m_ClientPort;
CString    m_ReceiveData;
UINT    m_ServerPort;
CAsyncSocket m_sockReceive;

m_ServerIP="127.0.0.1";
m_ClientIP="127.0.0.1";
m_ClientPort=6665;
m_ServerPort=6666;

void CSocketUDPClientDlg::OnReceive() 
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
    if (m_sockReceive.Create(m_ClientPort,SOCK_DGRAM,NULL))
    {
        m_sockReceive.Bind(m_ClientPort,m_ClientIP);
        SetTimer(1,2000,NULL);
        GetDlgItem(IDC_RECEIVE)->EnableWindow(FALSE);
        GetDlgItem(IDC_STOP)->EnableWindow(TRUE);
    }
    else
    {
        AfxMessageBox("创建套接字失败");
    }
}

void CSocketUDPClientDlg::OnStop() 
{
    // TODO: Add your control notification handler code here
    KillTimer(1);
    m_sockReceive.Close();
    m_ReceiveData="停止接收数据";
    UpdateData(FALSE);
    GetDlgItem(IDC_RECEIVE)->EnableWindow(TRUE);
    GetDlgItem(IDC_STOP)->EnableWindow(FALSE);
}

void CSocketUDPClientDlg::OnTimer(UINT nIDEvent) 
{
    // TODO: Add your message handler code here and/or call default
    char szRec[20];
    int iRec=m_sockReceive.ReceiveFrom(szRec,10,m_ServerIP,m_ServerPort,0);
    if (iRec==-1)
    {
        m_ReceiveData="停止接收数据";
    }
    else
    {
        szRec[iRec]=NULL;
        m_ReceiveData=szRec;
    }
    UpdateData(FALSE);
    CDialog::OnTimer(nIDEvent);
}

服务端代码：

 1 CString    m_ServerIP;
 2 CString    m_ClientIP;
 3 int    m_ServerPort;
 4 int    m_ClientPort;
 5 CAsyncSocket m_socketSend;
 6 
 7 m_ServerIP="127.0.0.1";
 8 m_ClientIP="127.0.0.1";
 9 m_ClientPort=6665;
10 m_ServerPort=6666;
11 
12 oid CSocketUDPServerDlg::OnSend() 
13 {
14     // TODO: Add your control notification handler code here
15     UpdateData(TRUE);
16     if (m_socketSend.Create(m_ServerPort,SOCK_DGRAM,NULL))
17     {
18         m_socketSend.Bind(m_ServerPort,m_ServerIP);
19         SetTimer(1,2000,NULL);
20         GetDlgItem(IDC_SEND)->EnableWindow(FALSE);
21         GetDlgItem(IDC_STOP)->EnableWindow(TRUE);
22     }
23     else
24         AfxMessageBox("套接字创建失败");
25 }
26 
27 void CSocketUDPServerDlg::OnStop() 
28 {
29     // TODO: Add your control notification handler code here
30     KillTimer(1);
31     m_socketSend.Close();
32     GetDlgItem(IDC_SEND)->EnableWindow(TRUE);
33     GetDlgItem(IDC_STOP)->EnableWindow(FALSE);
34 }
35 
36 void CSocketUDPServerDlg::OnTimer(UINT nIDEvent) 
37 {
38     // TODO: Add your message handler code here and/or call default
39     static iIndex=0;
40     char szSend[20];
41     sprintf(szSend,"101%d",iIndex++);
42     int iSend=m_socketSend.SendTo(szSend,10,m_ClientPort,m_ClientIP,0);
43     TRACE("发送了%d个字节",iSend);
44     CDialog::OnTimer(nIDEvent);
45 }




 

posted on 2011-12-22 16:47  Sunny_NUAA  阅读(1986)  评论(0)  编辑  收藏  举报

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