计算机网络程序设计实验6.doc

北京联合大学 信息学院 《》 实 验 序 号： 姓 名： 学 号： 班 级： 专 业： 实验六、基于 MFC 的 UDP 协议的网络程序调试 服务器代码 void CUdpSDlg::OnSocket(WPARAM wParam,LPARAM lParam) { char cs[100]=; //定义数据缓冲区 if(lParam==FD_READ) //如果是套接字读取时间 { CString num=; //定义字符串变量 int n=sizeof(addr1); ::recvfrom(s,cs,100,0,(sockaddr*)addr1,n); //接收客户端信息 GetDlgItem(IDC_EDIT1)-GetWindowText(num); //获取消息框中的内容 num+=\r\n 客户端说：; //添加回车换行符 num+=(LPTSTR)cs; //将接收到的数据转换为字符串 GetDlgItem(IDC_EDIT1)-SetWindowText(num); //设置消息框内容 } } BOOL CUdpSDlg::OnInitDialog() { CDialog::OnInitDialog(); // Set the icon for this dialog. The framework does this automatically // when the applications main window is not a dialog SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon // TODO: Add extra initialization here WORD version = MAKEWORD(2,0); WSADATA wsadata; if(WSAStartup(version,wsadata)) { MessageBox(加载Winsock dll 失败); return true; } addr.sin_family=AF_INET; addr.sin_port=htons(8088); addr.sin_addr.S_un.S_addr=INADDR_ANY; s=::socket(AF_INET,SOCK_DGRAM,0); ::bind(s,(sockaddr*)addr,sizeof(addr)); :: WSAAsyncSelect(s,this-m_hWnd,WM_SOCKET, FD_READ);//将套接字设置为异步模式 return TRUE; // return TRUE unless you set the focus to a control } void CUdpSDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } void CUdpSDlg::OnButton1() { // TODO: Add your control notification handler code here CString str=; int n=sizeof(addr1); GetDlgItem(IDC_EDIT2)-GetWindowText(str); if (: