serverdlg.cpp

socket编程

 // ServerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Server.h"
#include "ServerDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CServerDlg dialog

CServerDlg::CServerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CServerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CServerDlg)
		// 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 CServerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CServerDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CServerDlg, CDialog)
	//{{AFX_MSG_MAP(CServerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ACCEPT, OnAccept)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CServerDlg message handlers

BOOL CServerDlg::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
	CString str;
	str.Format("Idle");
	SetSysText(str);
	CProgressCtrl *pCtrl=(CProgressCtrl*)GetDlgItem(IDC_PROGRESS);
	pCtrl->SetRange(0,100);
	pCtrl->SetPos(0);
    m_pSocket=NULL;

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

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

UINT CServerDlg::GetPortNumFromCtrl()
{
	CEdit *pEdit=(CEdit*)GetDlgItem(IDC_PORTNUM);
	CString str;
	pEdit->GetWindowText(str);
	m_uPortNum=(UINT)atoi((LPCTSTR)str);
	return m_uPortNum;
}

CString CServerDlg::GetFileNameFromCtrl()
{
	CEdit *pEdit=(CEdit *)GetDlgItem(IDC_FILENAME);
	pEdit->GetWindowText(m_strFileName);
	return m_strFileName;
}

void CServerDlg::SetSysText(CString &str)
{
	CEdit *pEdit=(CEdit *)GetDlgItem(IDC_SYSSTATUS);
	pEdit->SetWindowText(str);
}

void CServerDlg::OnAccept() 
{
	// TODO: Add your control notification handler code here
	CString sysstr;
	m_pSocket=new CSocket;
 	GetPortNumFromCtrl();
	m_pSocket->Create(m_uPortNum);

	//first listen a connection request on an specified port
	sysstr.Format("Listening...");
	SetSysText(sysstr);
	if (!m_pSocket->Listen())
	{
		sysstr.Format("Listening failed");
		SetSysText(sysstr);
		MessageBox("can NOT listen a request");
        m_pSocket->Close();
		delete m_pSocket;
		m_pSocket=NULL;
		return ;
	}
    
	//then, accept the request
	sysstr.Format("Accepting...");
	SetSysText(sysstr);
	CSocket ConnectedSocket;
	if (!m_pSocket->Accept(ConnectedSocket))
	{
		sysstr.Format("Accepting Failed");
		SetSysText(sysstr);
		MessageBox("can NOT accepting");
		m_pSocket->Close();
		delete m_pSocket;
		m_pSocket=NULL;
		return;
	}

    CSocketFile SockFile(&ConnectedSocket);
	CArchive arIn(&SockFile,CArchive::load);  //load表示deserialize，即非连续
                                              //Creates a CArchive object that points to SockFile 
		
	//begin reciving
	sysstr.Format("Reciving...");
	SetSysText(sysstr);
    CProgressCtrl *pCtrl=(CProgressCtrl *)GetDlgItem(IDC_PROGRESS);
	pCtrl->SetPos(0);
	
	//first,recieve the length of file from the client
	DWORD FileLength; 
	arIn>>FileLength;
	//then,recieve the name of file from the client
	CString FileName;
	arIn>>FileName;
	SaveFileAs(FileName);
    
	//at last,recieve the file itself
	// first,create the file
	CFile *fp=new CFile;
	if (!fp->Open(m_strFileName,CFile::modeCreate|CFile::modeWrite))
	{
		sysstr.Format("Reciving Failed");
		SetSysText(sysstr);
		MessageBox("Can NOT create the file");
		delete fp;
		arIn.Close();
		SockFile.Close();
		m_pSocket->Close();
		delete m_pSocket;
		m_pSocket=NULL;
		return;
	}

    char buf[2048];
	UINT Result;
	m_dwRecievedFileLength=0;
    do{
		Result=arIn.Read(buf,2048);
		fp->Write(buf,Result);
        m_dwRecievedFileLength+=Result;
		pCtrl->SetPos(m_dwRecievedFileLength*100./FileLength);//????
	}
	while (m_dwRecievedFileLength<FileLength);

    //reception accomplished
	sysstr.Format("Reception accomplished");
	SetSysText(sysstr);
	MessageBox("Reception accomplished");
	arIn.Close();
	SockFile.Close();
	fp->Close();
	delete fp;
	m_pSocket->Close();
	delete m_pSocket;
	m_pSocket=NULL;

}

void CServerDlg::SaveFileAs(CString &FileName)
{
	CFileDialog *pDlg=new CFileDialog(FALSE,NULL,FileName);
    if (pDlg->DoModal()==IDOK)
	{
		m_strFileName=pDlg->GetPathName();
		CEdit *pEdit=(CEdit*)GetDlgItem(IDC_FILENAME);
		pEdit->SetWindowText(m_strFileName);
	}
	else
	{
		m_strFileName=FileName;
		CEdit *pEdit=(CEdit*)GetDlgItem(IDC_FILENAME);
		pEdit->SetWindowText(m_strFileName);
	}
}