reconnectdlg.cpp

vc网络传输学习之套接字断开重新连接。。。。。

// ReConnectDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ReConnect.h"
#include "ReConnectDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CReConnectDlg dialog

CReConnectDlg::CReConnectDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CReConnectDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CReConnectDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON2);
}

void CReConnectDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CReConnectDlg)
	DDX_Control(pDX, IDC_SERVERPORT, m_ServerPort);
	DDX_Control(pDX, IDC_SERVERADDR, m_ServerAddr);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CReConnectDlg, CDialog)
	//{{AFX_MSG_MAP(CReConnectDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CONNECT, OnConnect)
	ON_MESSAGE(CM_SOCKETMESSAGE,OnAccept)
	ON_BN_CLICKED(IDC_CANCEL, OnCancel)
	ON_BN_CLICKED(IDC_DISCONNECT, OnDisconnect)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CReConnectDlg message handlers

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

	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);
		}
	}

	SetIcon(m_hIcon, TRUE);	
	SetIcon(m_hIcon, FALSE);
	
	//创建服务器套接字
	m_Server = socket(AF_INET,SOCK_STREAM,0);
	m_Client = socket(AF_INET,SOCK_STREAM,0);
	if (m_Server==INVALID_SOCKET || m_Client == INVALID_SOCKET)
	{
		MessageBox("套接字创建失败");
		return TRUE;
	}

	WSAAsyncSelect(m_Server,m_hWnd,CM_SOCKETMESSAGE,FD_ACCEPT);

	char HostName[MAX_PATH];
	memset(HostName,0,MAX_PATH);
	gethostname(HostName,MAX_PATH);
	
	hostent* HostInfo;
	HostInfo = gethostbyname(HostName);
	
	CString IP;
	
	IP = inet_ntoa(*(in_addr*)HostInfo->h_addr_list[0]);
	
	//绑定套接字
	ServerAddr.sin_port = htons(800);
	ServerAddr.sin_family = PF_INET;
	ServerAddr.sin_addr.S_un.S_addr = inet_addr(IP.GetBuffer(0));

	if (bind(m_Server,(sockaddr*)&ServerAddr,sizeof(ServerAddr))!=0)
	{
		MessageBox("套接字地址绑定错误");
		return TRUE;
	}
	//监听套接字
	listen(m_Server,5);
	
	return TRUE; 
}

void CReConnectDlg::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 CReConnectDlg::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 CReConnectDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CReConnectDlg::OnAccept(WPARAM wParam, LPARAM lParam)
{
	closesocket(m_Accept);
	m_Accept = accept(m_Server,NULL,NULL);
}

void CReConnectDlg::OnOK() 
{

}

void CReConnectDlg::OnConnect() 
{
	CString port;
	m_ServerPort.GetWindowText(port);
	
	CString name;
	m_ServerAddr.GetWindowText(name);

	if (port.IsEmpty()|| name.IsEmpty())
	{
		MessageBox("请设置服务器信息");
		return;
	}
	
	closesocket(m_Client);
	m_Client = socket(AF_INET,SOCK_STREAM,0);

	sockaddr_in addr;
	addr.sin_family = AF_INET;
	addr.sin_port = htons(atof(port));
	addr.sin_addr.S_un.S_addr = inet_addr(name);

	if (connect(m_Client,(sockaddr*)&addr,sizeof(ServerAddr))==0)
	{
		MessageBox("连接成功");
	}
	else
	{
		MessageBox("连接失败");
	}
}

void CReConnectDlg::OnCancel() 
{
	CDialog::OnCancel();	
}

void CReConnectDlg::OnDisconnect() 
{
	closesocket(m_Client);	
}