tcpfile_recvdlg.cpp

基于TCP/IP协议的SOCKET通信程序

// TCPFile_RecvDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TCPFile_Recv.h"
#include "TCPFile_RecvDlg.h"
#include <Winsock2.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()

/////////////////////////////////////////////////////////////////////////////
// CTCPFile_RecvDlg dialog

CTCPFile_RecvDlg::CTCPFile_RecvDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTCPFile_RecvDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTCPFile_RecvDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTCPFile_RecvDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTCPFile_RecvDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTCPFile_RecvDlg, CDialog)
	//{{AFX_MSG_MAP(CTCPFile_RecvDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUT_RECV, OnButRecv)
	ON_BN_CLICKED(IDC_BTN_AA, OnBtnAa)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTCPFile_RecvDlg message handlers

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

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

BOOL CTCPFile_RecvDlg::InitSocket()
{
	SrvSocket=socket(AF_INET,SOCK_STREAM,0);
	SrvAddr.sin_addr.S_un.S_addr=htonl(ADDR_ANY);
	SrvAddr.sin_family=AF_INET;
	SrvAddr.sin_port=htons(50000);
	if(INVALID_SOCKET==SrvSocket)
	{
		MessageBox(_T("创建套接字失败！"));
		return 0;
	}
	if(SOCKET_ERROR==bind(SrvSocket,(SOCKADDR*)&SrvAddr,sizeof(SOCKADDR)))
	{
		MessageBox(_T("绑定套接字失败！"));
		closesocket(SrvSocket);
	    return false;
	}
	return 1;
}


BOOL CTCPFile_RecvDlg::RecvFile()
{
	char RecvBuf[1024];
	int  RecvLeng;
	CString FilePathName;
	InitSocket(); 
    if(SOCKET_ERROR==listen(SrvSocket,5))
	{
		MessageBox(_T("监听失败！"));
		closesocket(SrvSocket);
	    return false;
	}

	SOCKADDR_IN clientAddr;
	SOCKET ConnectSocket;
	int ConnectLeng=sizeof(SOCKADDR);

	memset(&clientAddr,0,sizeof(SOCKADDR));
	SetDlgItemText(IDC_STA_MSG,"等待发送方.....");
	ConnectSocket=accept(SrvSocket,(SOCKADDR*)&clientAddr,&ConnectLeng);
	if(INVALID_SOCKET==ConnectSocket)
	{	    
		closesocket(ConnectSocket);
		MessageBox(_T("等待连接失败"));
		closesocket(SrvSocket);
		return false;	
	}
	RecvLeng=recv(ConnectSocket,RecvBuf,1024,0);
	if(SOCKET_ERROR==RecvLeng)
	{
	    closesocket(ConnectSocket);
		MessageBox(_T("接收失败"));
		closesocket(SrvSocket);
		return false;
	}
    CFileDialog fdlg(false);
	fdlg.m_ofn.lpstrFile=RecvBuf;
	if(IDOK==fdlg.DoModal())
	{
	    FilePathName=fdlg.GetPathName();
	}

	CFile file(FilePathName,CFile::modeWrite|CFile::modeCreate);
	send(ConnectSocket,RecvBuf,1024,0);
	SetDlgItemText(IDC_STA_MSG,"文件传送中.....");
	while(1)
	{
		RecvLeng=recv(ConnectSocket,RecvBuf,1024,0);
		if(SOCKET_ERROR==RecvLeng)
		{
			closesocket(ConnectSocket);
			MessageBox(_T("接收失败"));
			closesocket(SrvSocket);
			return false;
		}
		else
		{
		    if(RecvLeng)
			{
				file.Write(RecvBuf,RecvLeng);	
			}
			else
			{
			    closesocket(ConnectSocket);
				closesocket(SrvSocket);
			    MessageBox(_T("文件接收成功！"));
				SetDlgItemText(IDC_STA_MSG,"文件接收成功！");
				return true;
			}
		}
	}
}

void CTCPFile_RecvDlg::OnButRecv() 
{
	// TODO: Add your control notification handler code here
		RecvFile();
}

void CTCPFile_RecvDlg::OnBtnAa() 
{
	// TODO: Add your control notification handler code here
	
}