lanserverclientdlg.cpp

VisualC++通信编程工程实例精解 Chapter 2 Example 1 MSCOMM控件编程实例 Example 2 基于Windows API的虚拟终端实现 Example 3

// LANServerClientDlg.cpp : implementation file
//

#include "stdafx.h"
#include "LANServerClient.h"
#include "LANServerClientDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CLANServerClientDlg dialog

CLANServerClientDlg::CLANServerClientDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CLANServerClientDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLANServerClientDlg)
	m_Type = 0;
	m_Port = 10001;
	m_Info = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_SocketServer.SetMessagePara(this,WM_NET_MESSAGE);
	m_SocketClient.SetMessagePara(this,WM_NET_MESSAGE);
}

void CLANServerClientDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLANServerClientDlg)
	DDX_Control(pDX, IDC_HOSTIP, m_IP);
	DDX_Radio(pDX, IDC_SERVER, m_Type);
	DDX_Text(pDX, IDC_PORT, m_Port);
	DDX_Text(pDX, IDC_INFO, m_Info);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CLANServerClientDlg, CDialog)
	//{{AFX_MSG_MAP(CLANServerClientDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SERVER, OnServer)
	ON_BN_CLICKED(IDC_CLIENT, OnClient)
	ON_BN_CLICKED(IDC_START_LINK, OnStartLink)
	ON_BN_CLICKED(IDC_SEND, OnSend)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_NET_MESSAGE,NETMessage)
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CLANServerClientDlg message handlers

BOOL CLANServerClientDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's 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

	m_IP.EnableWindow(FALSE);	
	BYTE a1 = 127;
	BYTE a2 = 0;
	BYTE a3 = 0;
	BYTE a4 = 1;
	m_IP.SetAddress(a1,a2,a3,a4);

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CLANServerClientDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CLANServerClientDlg::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();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CLANServerClientDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}



void CLANServerClientDlg::OnServer() 
{
	// TODO: Add your control notification handler code here
	m_Type = 0;
	m_IP.EnableWindow(FALSE);
	GetDlgItem(IDC_START_LINK)->SetWindowText("启动");
	(AfxGetMainWnd())->SetWindowText("服务器");

}

void CLANServerClientDlg::OnClient() 
{
	// TODO: Add your control notification handler code here
	m_Type = 1;
	m_IP.EnableWindow(TRUE);
	GetDlgItem(IDC_START_LINK)->SetWindowText("连接");
	(AfxGetMainWnd())->SetWindowText("客户机");
	
}

LRESULT CLANServerClientDlg::NETMessage(WPARAM wParam, LPARAM lParam)
{
	CString str;

	switch(wParam){
	case CLIENTREAD:
		str = m_SocketClient.GetMessStr();
		m_Info = str;
			break;
	case CLIENTSEND:
			break;
	case CONNECT:
		m_Info = "已连接上服务器 !";
			break;
	case SERVERCLOSE:
		m_Info = "服务器已关闭";
			break;

	case SERVERREAD:
		str = m_SocketServer.GetMessStr();
		m_Info = str;
			break;
	case SERVERSEND:
			break;
	case ACCEPT:
		KillTimer(2);
		m_Info = "已接受客户机请求 !";
			break;
	case CLIENTCLOSE:
		m_Info = "客户机已关闭";
			break;
	}

	UpdateData(false);
	return TRUE;
}

void CLANServerClientDlg::OnStartLink() 
{
	// TODO: Add your control notification handler code here
	UpdateData();

	if(	!m_Type )
	{
		if(m_SocketServer.m_hSocket == INVALID_SOCKET)
		{
		    BOOL bFlag = m_SocketServer.Create(m_Port, SOCK_STREAM, FD_ACCEPT);
			if(!bFlag)
			{
    			MessageBox("网络建立错误 !");
		    	m_SocketServer.Close();
		    	return;
			}
		}
		//“侦听”成功，等待连接请求
		if(!m_SocketServer.Listen(1))
		{
		    int nErrorCode = m_SocketServer.GetLastError();
		    if(nErrorCode = WSAEWOULDBLOCK)
			{
		    	MessageBox("网络侦听错误 !");
		    	m_SocketServer.Close();
		    	return;
		    }
		}
	}
	else
	{
		BYTE a1,a2,a3,a4;
		m_IP.GetAddress(a1,a2,a3,a4);
		m_ServerAdr.Format("%d.%d.%d.%d",a1,a2,a3,a4);
		
		m_SocketClient.ShutDown(2);
		m_SocketClient.Rest();
	    //建立计时器，每1秒尝试连接一次，直到连上或TryCount>10
		SetTimer(1,500,NULL);
		TryCount=0;
	}	
}

void CLANServerClientDlg::OnSend() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	char ch[255];
	strcpy(ch,LPCTSTR(m_Info));

	if(	!m_Type )
	{
		m_SocketServer.SendStr(m_Info);
	}
	else
	{
		m_SocketClient.SendStr(m_Info);
	}	
}

void CLANServerClientDlg::OnStop() 
{
	// TODO: Add your control notification handler code here
	if(!m_Type)
	{
		m_SocketServer.CloseServer();
		m_SocketServer.Close();
	}
	else
	{
		m_SocketClient.Close();
		KillTimer(1);
	}	
}

void CLANServerClientDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	if (m_SocketClient.m_hSocket == INVALID_SOCKET)
	{
		BOOL bFlag=m_SocketClient.Create(0,SOCK_STREAM,FD_CONNECT);
		if(!bFlag)
		{	
			MessageBox("网络请求失败 !");
			m_SocketClient.Close();
			KillTimer(1);
			return;
		}
	}
	m_SocketClient.Connect(m_ServerAdr,m_Port);
	TryCount++;
	if (TryCount >=10 || m_SocketClient.IsConnect())
	{	
		KillTimer(1);
		if (TryCount >=10) AfxMessageBox("Connect Failed!");
		return;
	}
		
	CDialog::OnTimer(nIDEvent);
}