tcpserverdlg.cpp

SOCKET客户端和服务器端程序,我们课题组用来做嵌入式开发时的网络测试

// TCPServerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TCPServer.h"
#include "TCPServerDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/****************************************************************************/
// globals
// defines
/* max clients connected at a time */
#define SERVER_MAX_CONNECTIONS 5 
// Message to send for update
#define WM_UPDATE    (WM_USER+100) 
// receive socket 
int snew;
// receive count and length
int nRxCount = 0,nRxLength = 0;
// data buffer
BYTE byRcvData[64];
// window handler
HWND myhWnd;
// receive thread
UINT RcvThread(LPVOID lParam);
// receive enable flag
BOOL rcvFlag = FALSE;
/***************************************************************************/
/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CTCPServerDlg dialog
CTCPServerDlg::CTCPServerDlg(CWnd* pParent /*=NULL*/)
: CDialog(CTCPServerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTCPServerDlg)
	m_strLocalIP = _T("127.0.0.1");
	m_nServerPort = 18018;
	m_nClientPort = 0;
	m_nRxCount = 0;
	m_nRxLength = 0;
	m_nClientIP = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

////////////////////////////////////////////////////////////////////////////
//
void CTCPServerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTCPServerDlg)
	DDX_Control(pDX, IDC_BUTTON_LISTEN, m_btnListen);
	DDX_Control(pDX, IDC_LIST, m_list);
	DDX_Text(pDX, IDC_EDIT_LOCAL_IP, m_strLocalIP);
	DDX_Text(pDX, IDC_EDIT_SERVER_PORT, m_nServerPort);
	DDX_Text(pDX, IDC_EDIT_CLIENT_PORT, m_nClientPort);
	DDX_Text(pDX, IDC_EDIT_RX_COUNT, m_nRxCount);
	DDX_Text(pDX, IDC_EDIT_RX_LENGTH, m_nRxLength);
	DDX_Text(pDX, IDC_EDIT_CLIENT_IP, m_nClientIP);
	//}}AFX_DATA_MAP
}

//////////////////////////////////////////////////////////////////////////////
//
BEGIN_MESSAGE_MAP(CTCPServerDlg, CDialog)
//{{AFX_MSG_MAP(CTCPServerDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_LISTEN, OnButtonListen)
	ON_BN_CLICKED(IDC_BUTTON_RCV, OnButtonRcv)
	ON_BN_CLICKED(IDC_BUTTON_CLOSE, OnButtonClose)
ON_MESSAGE( WM_UPDATE, RcvUpdate )
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTCPServerDlg message handlers
BOOL CTCPServerDlg::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 CTCPServerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

/////////////////////////////////////////////////////////////////////////////////
//
void CTCPServerDlg::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 CTCPServerDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

/////////////////////////////////////////////////////////////////////////////
// Listen,must run before client runs
void CTCPServerDlg::OnButtonListen() 
{
	UpdateData(TRUE);
	myhWnd = this->m_hWnd;
	m_btnListen.EnableWindow(FALSE);
	/* socket fd's */
	int	sock;	
	/* server's address */
    struct sockaddr_in	serverAddr;	
	/* client's address */
    struct sockaddr_in 	clientAddr;
	/* length of clientAddr */
    int	client_len;	
	int rcvCount = 0;
    
	memset(&serverAddr,0,sizeof (serverAddr));
    memset(&clientAddr,0,sizeof (clientAddr));
 
    // Create a socket
	sock = socket (AF_INET, SOCK_STREAM, 0);
    if (sock == -1)
	{
		AfxMessageBox("Socket creates failed!\n");
		return;
	}

    /* Set up our internet address, and bind it so the client can connect. */
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(m_nServerPort);
	// Bind to local address
    if(bind (sock, (struct sockaddr *)&serverAddr, sizeof (serverAddr))== -1)
	{
		closesocket(sock);
		return;
	}
    /* Listen, for the client to connect to us. */
    if (listen (sock, 1) == -1)
	{
		closesocket(sock);
		return;
	}
    client_len = sizeof (clientAddr);
    // Accept new connection
	snew = accept (sock, (struct sockaddr *)&clientAddr, &client_len);
    if (snew == -1)
	{
		closesocket(sock);
		AfxMessageBox("Accept connection timeout!\n");
		return;
	}
	// display connected client info
 	m_nClientIP = (UINT)ntohl(clientAddr.sin_addr.s_addr);
	m_nClientPort = ntohs(clientAddr.sin_port);
	m_list.AddString("Connection has been establish\n");
	m_list.AddString("click RECEIVE button to receive data...\n");
	UpdateData(FALSE);	
}

///////////////////////////////////////////////////////////////////////////////////
// Update
void CTCPServerDlg::RcvUpdate(WPARAM wParam, LPARAM lParam)
{
	int i,count;
	CString str;
	count = m_list.GetCount();
	m_nRxCount = nRxCount;
	m_nRxLength = nRxLength;
	UpdateData(FALSE);
	// Clear
	for(i=0;i<=count;i++)
		m_list.DeleteString(0);
	
	for(i=0;i<8;i++)
	{
		str.Format("%02x\t%02x\t%02x\t%02x\t%02x\t%02x\t%02x\t%02x\n",
				   byRcvData[0+8*i],
				   byRcvData[1+8*i],
				   byRcvData[2+8*i],
				   byRcvData[3+8*i],
				   byRcvData[4+8*i],
				   byRcvData[5+8*i],
				   byRcvData[6+8*i],
				   byRcvData[7+8*i]);
		m_list.AddString(str);
	}
}

///////////////////////////////////////////////////////////////////////////////////
// Receive thread
UINT RcvThread(LPVOID lParam)
{
	int nCurLength;
	// Receive data
	while(rcvFlag)
	{
		nCurLength = recv(snew,(char*)byRcvData,sizeof(byRcvData),0);
		nRxLength += nCurLength;
		if(nCurLength == 0)
		{
			Sleep(1);
		}
		else
		{
			nRxCount++;
			::PostMessage(myhWnd,WM_UPDATE,0,0);
		}
	}
	return 0;
}

/////////////////////////////////////////////////////////////////////////////////
// Start the receive thread...
void CTCPServerDlg::OnButtonRcv() 
{
	// enable receive 
	rcvFlag = TRUE;
	m_pThread = AfxBeginThread(RcvThread,0);
	if(m_pThread == NULL)
	{
		AfxMessageBox("Thread begin failed!\n");
	}
	// Clear
	for(int i=0;i<=m_list.GetCount();i++)
		m_list.DeleteString(0);
	
}

//////////////////////////////////////////////////////////////////////////
// Close the connection
void CTCPServerDlg::OnButtonClose() 
{
	rcvFlag = FALSE;
	Sleep(100);
	if(m_pThread != NULL)
		TerminateThread(m_pThread,0);
	if(snew != 0)
		closesocket(snew);
	AfxMessageBox("Connection has been close!");
}

////////////////////////////////////////////////////////////////////////
// quit
void CTCPServerDlg::OnOK() 
{
	rcvFlag = FALSE;
	Sleep(100);
	if(m_pThread != NULL)
		TerminateThread(m_pThread,0);
	if(snew != 0)
		closesocket(snew);
	CDialog::OnOK();
}