计算机网络课程设计（ping和tracert的实现）

// PingPlusDlg.cpp : implementation file // ////////////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "PingPlus.h" #include "PingPlusDlg.h" #include "PingOptionsDlg.h" ////////////////////////////////////////////////////////////////////////////// #include "RegKey.h" #include "SysTCPIP.h" ////////////////////////////////////////////////////////////////////////////// #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App About class CAboutDlg : public CDialog { public: CAboutDlg(); // Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL // Implementation protected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CPingPlusDlg dialog CPingPlusDlg::CPingPlusDlg(CWnd* pParent /*=NULL*/) : CDialog(CPingPlusDlg::IDD, pParent) { //{{AFX_DATA_INIT(CPingPlusDlg) m_Host = _T(""); m_LocalHost = _T(""); m_NameServer = _T(""); //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CPingPlusDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CPingPlusDlg) DDX_Control(pDX, IDC_TraceList, m_TraceList); DDX_Text(pDX, IDC_DEST, m_Host); DDX_Text(pDX, IDC_LocalHost, m_LocalHost); DDX_Text(pDX, IDC_NameServer, m_NameServer); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CPingPlusDlg, CDialog) //{{AFX_MSG_MAP(CPingPlusDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDQUIT, OnQuit) ON_BN_CLICKED(IDC_PingButton, OnPingButton) ON_BN_CLICKED(IDC_TraceButton, OnTraceButton) ON_BN_CLICKED(IDC_OptionsButton, OnOptionsButton) ON_WM_TIMER() ON_BN_CLICKED(IDC_ClearButton, OnClearButton) ON_MESSAGE(WSA_PING_ASYNC, OnPINGAsynch) ON_BN_CLICKED(IDC_Stop, OnStop) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CPingPlusDlg message handlers ////////////////////////////////////////////////////////////////////////// // // // MESSAGE INTERRUPT PROCESSORS // // // ////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////// // // // Initialize main dialog // // // ////////////////////////////////////////// BOOL CPingPlusDlg::OnInitDialog() { CDialog::OnInitDialog(); ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } SetIcon(m_hIcon, TRUE); // 设置最大图标 SetIcon(m_hIcon, FALSE); // 设置最小图标 PingSocket.icmpSocket = INVALID_SOCKET; PingSent = FALSE; FetchWinsockSettings(); // 获取信息，如域名，服务名等 if (!InitSockets()) // 如果无法打开socket退出 CDialog::OnCancel(); InitImageList(); // 为IDC_TraceList (aka m_TraceList)建立图像列表 pIcmpBuffer = (LPSTR)icmpBuffer;// 设置缓冲器指向 return TRUE; } ////////////////////////////////////////////////// // // // Control menu and max/min processor // // // ////////////////////////////////////////////////// void CPingPlusDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } ////////////////////////////////////////// // // // Repaint window // // // ////////////////////////////////////////// void CPingPlusDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // 设计面板 SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // 图标在客户机中长方形居中 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; // 拉动图标 dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } ////////////////////////////////////////// // // // Called when icon is moving // // // ////////////////////////////////////////// HCURSOR CPingPlusDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } ////////////////////////////////////////////////////// // // // PING Asynchronous Message Processor // // // // Responds to received ICMP messages // // Updates the Trace window with the round // // trip time and sequence, // // Stops the timer, // // If not TRACING, exits. // // // // If rcvSockAddr = TraceTarget, displays // // host reached and exits. // // If icmpMaxHops exceeded, displays host not // // reached and exits. (icmpMaxHops is set // // in PingPlus Options Dialog). // // Displays next animated icon picture, // // increments icmpHops and requests next // // PING // // // ////////////////////////////////////////////////////// LRESULT CPingPlusDlg::OnPINGAsynch(WPARAM wParam, LPARAM lParam) {//异步线程处理器。多线程显示消息 int WSAEvent = WSAGETSELECTEVENT(lParam); int WSAError = WSAGETSELECTERROR(lParam); if (WSAError) { CString ErrorMessage; ErrorMessage.Format("WSAAsynch Event # %u, Error: %u", WSAEvent, WSAError); MessageBox (ErrorMessage, "CPingPlusDlg::OnPINGAsynch", MB_OK|MB_SYSTEMMODAL); } StopTimer(); switch (WSAEvent) { case FD_READ: if (PingSocket.Receive(pIcmpBuffer, sizeof icmpBuffer) == SOCKET_ERROR) { if (!PingSent) return 0; PingSocket.DisplayError ("FD_READ", "CPingPlusDlg::OnWSAAsynch"); } else { DWORD PingRoundTrip = PingSocket.icmpPingReceivedAt - PingSocket.icmpPingSentAt; if (PingSocket.icmpRoundTripTime > PingRoundTrip) PingSocket.icmpRoundTripTime = PingRoundTrip; if (PingSent) { UpdateTrace(); if (!icmpTracing) { m_TraceList.InsertItem (m_TraceList.GetItemCount(), "", Icon_BlueArrow); SetTraceFocus (m_TraceList.GetItemCount()-1, 0); DisplayTrace ("","","Host Reached"); } } } PingSent = FALSE; if (icmpTracing) { PingSocket.icmpHops++; if ( (PingSocket.icmpHops >= PingSocket.icmpMaxHops) || (TraceTarget.s_addr == PingSocket.rcvSockAddr.sin_addr.s_addr )) { EndTrace(); m_TraceList.InsertItem (m_TraceList.GetItemCount(), "", Icon_BlueArrow); SetTraceFocus (m_TraceList.GetItemCount()-1, 0); DisplayTrace ("","","HOST Reached"); } else { ChangeIconState(); SendPing(); } } break; case FD_WRITE: break; default: break; } return 0; } /