simpletcpserverdlg.cpp

TransferFiles_demo对话框程序

// SimpleTcpServerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SimpleTcpServer.h"
#include "SimpleTcpServerDlg.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
}
//CSimpleTcpClientDlg-〉CDialog-〉CWnd-〉CCmdTarget
// CSimpleTcpClientApp-〉CWinApp-〉CWinThread-〉CCmdTarget
//updata自动调用下列函数
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()

/////////////////////////////////////////////////////////////////////////////
// CSimpleTcpServerDlg dialog

CSimpleTcpServerDlg::CSimpleTcpServerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSimpleTcpServerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSimpleTcpServerDlg)
		// 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);
	exit=false;

///////	m_list.ResetContent();//删除listbox里的所有内容
	//UpdateData(true);//当参数为true：是更新数据，用于ok，cancel时数据不能更新；
	//当参数为false：用于在对话框显示前，初始化对话框
	//******* 以上二命令不能再次运行，可能因为初始化时尚未建立
}

void CSimpleTcpServerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSimpleTcpServerDlg)
	DDX_Control(pDX, IDC_LIST1, m_list);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSimpleTcpServerDlg, CDialog)
	//{{AFX_MSG_MAP(CSimpleTcpServerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSimpleTcpServerDlg message handlers
//DoModal调用此函数
BOOL CSimpleTcpServerDlg::OnInitDialog()
{//DoModal时传WM_INITDIALOG 消息给此函数，并调用此函数
	//窗口通过标准全局对话框过程调用此函数，不需要为此函数设消息映射
	CDialog::OnInitDialog();  //此函数需先调用基类函数


	// 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);
	//参数为false 时菜单可改，返回菜单句柄，true恢复为默认菜单
	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 CSimpleTcpServerDlg::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 CSimpleTcpServerDlg::OnPaint() 
{
	if (IsIconic())//指定窗口是否被最小化
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
        //sendmessage(n1,n2,n3):n1消息名称，n2、n3附加信息。此函数
		//调用窗口过程，直到窗口过程处理完消息才返回。
        //wm_iconerasebkgnd:在画图标前，图标的背景必须被填充，框架为图标的
		//最小化窗口调用此函数。图标类必须被定义成窗口的默认实现。
		//getsafeHdc返回Output设备上下文
		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);//把CWnd客户区的坐标拷贝进rect;
		//左上（0，0），右下为宽度和高度
		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 CSimpleTcpServerDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void CSimpleTcpServerDlg::OnOK() 
{   m_list.ResetContent();//删除listbox里的所有内容
	UpdateData(true);//当参数为true：是更新数据，用于ok，cancel时数据不能更新；
	//当参数为false：用于在对话框显示前，初始化对话框
	//*********此二命令在此运行，说明时间应该在此时才可运行
   AfxBeginThread(StartDownload,this);
}

UINT CSimpleTcpServerDlg::StartDownload(LPVOID pParam )
{
	CSimpleTcpServerDlg* pDlg=(CSimpleTcpServerDlg*)pParam;
	pDlg->Connect();
	return 0;
}

void CSimpleTcpServerDlg::Connect()
{   CString s;
    SOCKET server;
	WSADATA wsaData;
	sockaddr_in local;
	int wsaret=WSAStartup(0x101,&wsaData);
	if(wsaret!=0)
    {   s.Format("Initialized Winsock Failed.");
	    m_list.AddString(s);
        return ;
    }
	s.Format("Initialized Winsock Successfully.");
	m_list.AddString(s);

	local.sin_family=AF_INET; 			// 地址家族Address family
    local.sin_addr.s_addr=INADDR_ANY; 	// 要求使用当前主机配置的所有IP地址
    local.sin_port=htons((u_short)20248); 		// 使用的端口
    server=socket(AF_INET,SOCK_STREAM,0);
    if(server==INVALID_SOCKET)
    {   s.Format("Initialized server socket Failed.");
	    m_list.AddString(s);
        return ;
    }
	s.Format("Initialized server socket Successfully.");
	m_list.AddString(s);
    if(bind(server,(sockaddr*)&local,sizeof(local))!=0)
    {   s.Format("Bind server socket Failed.");
	    m_list.AddString(s);
		closesocket(server);
		WSACleanup();
        return ;
    }
	s.Format("Server socket has been bond successfully.");
	m_list.AddString(s);
    if(listen(server,10)!=0)
    {   s.Format("Server socket Failed to listen.");
	    m_list.AddString(s);
		closesocket(server);
		WSACleanup();
        return ;
    }

    s.Format("Server socket is listening.");
	m_list.AddString(s);

    SOCKET client;
    sockaddr_in from;
	int error=0;
    int fromlen=sizeof(from);
	while (!exit)
    {
        // accept() 将接受到了的客户连接
        client=accept(server,
            (struct sockaddr*)&from,&fromlen);
	 	if (client==SOCKET_ERROR){
	 		TRACE("Accept Error:%d\n",(error=WSAGetLastError()));
			s.Format("Client socket connected is  error.");
			m_list.AddString(s);
			closesocket(client);
			closesocket(server);
			WSACleanup();
 			return ;
		}
		s.Format("Accept a client.");
		m_list.AddString(s);
        TransferFile(client);
		closesocket(client);
	}
	closesocket(server);
	WSACleanup();
	s.Format("Socket has been closed.You can close the window.");
	m_list.AddString(s);
}

void CSimpleTcpServerDlg::TransferFile(SOCKET clientsocket)
{
	char buff[512];
	CString cmd;
    CString filename;
	CString s;
	SOCKET client=clientsocket;
	CFile f;
	int n;
    if (!exit)
	{
	  n=recv(client,buff,512,0);//接收请求，
      if(n==SOCKET_ERROR )	
	  {     s.Format("!!!Transferring the filename fails.");
	        m_list.AddString(s);
			strcpy(buff,"!!!Transferring the filename fails.");
			send(client,buff,strlen(buff),0);//发送第一次接受失败
			return;
	  }
	  buff[n]=0;
      ParseURL(buff,filename);
	  

      BOOL p=f.Open(filename,CFile::modeRead);	

	  int y;
	  int x;
	  if(!p){
		s.Format("!!!file can't be open.");
        m_list.AddString(s);
		s.Format(filename);
		m_list.AddString(s); 

		strcpy(buff,"!!!file can't be open.");
		send(client,buff,strlen(buff),0);//发送文件打开失败
		return ;
	  }
      s.Format("file is being transferred...");
      m_list.AddString(s);
      while(!exit)
		{		
	    	y=f.Read(buff,512);
		    x=send(client,buff,y,0);		
	    	if(y<512)
			{
			  f.Close();
		      return;
			}			
		}	//while

	}//if
	f.Close();
	return;
}


void CSimpleTcpServerDlg::ParseURL(char *str, CString &fname)
{
	int n;
	CString temp=str;
	temp.TrimLeft();
	temp.TrimRight();

	n=temp.Find(' ');

	fname=temp.Right(temp.GetLength()-(n+1));

}

void CSimpleTcpServerDlg::OnCancel() 
{
	exit=true;
	
   CDialog::OnCancel();
}