udpdlg.cpp

lm3s下lwip的udp

// UDPDlg.cpp : implementation file
//

#include "stdafx.h"
#include "UDP.h"
#include "UDPDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CUDPDlg dialog

CUDPDlg::CUDPDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUDPDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUDPDlg)
	m_edit_dst_data = _T("nimengyu");
	m_edit_dst_ip = _T("192.168.14.20");
	m_edit_recv = _T("");
	m_edit_src_port = 5000;
	m_edit_static = _T("");
	m_edit_dst_port = 4000;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUDPDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUDPDlg)
	DDX_Control(pDX, IDC_EDIT_RECV, m_edit_ctl_recv);
	DDX_Control(pDX, IDC_EDIT_STATIC, m_edit_ctl_static);
	DDX_Text(pDX, IDC_EDIT_DST_DATA, m_edit_dst_data);
	DDX_Text(pDX, IDC_EDIT_DST_IP, m_edit_dst_ip);
	DDX_Text(pDX, IDC_EDIT_RECV, m_edit_recv);
	DDX_Text(pDX, IDC_EDIT_SRC_PORT, m_edit_src_port);
	DDX_Text(pDX, IDC_EDIT_STATIC, m_edit_static);
	DDX_Text(pDX, IDC_EDIT_DST_PORT, m_edit_dst_port);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUDPDlg, CDialog)
	//{{AFX_MSG_MAP(CUDPDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_SET_SERVER, OnButtonSetServer)
	ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
	ON_WM_DESTROY()
	ON_BN_CLICKED(IDC_BUTTON_CLR_STATIC, OnButtonClrStatic)
	ON_BN_CLICKED(IDC_BUTTON_CLR_RECV, OnButtonClrRecv)
	ON_BN_CLICKED(IDC_BUTTON_CLR_SET, OnButtonClrSet)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUDPDlg message handlers

BOOL CUDPDlg::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
	socket_init();

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

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


void *CUDPDlg::ListenThread( void *data )
{
	CString ss1,ss2;
	char buf[4096];
	CUDPDlg *Comm = (CUDPDlg *)data;
	int len = sizeof(Comm->client);
	while(1)	// 一直循环
	{
		//接收数据
		int result = recvfrom( Comm->ListenSocket, buf, sizeof(buf)-1, 0, (sockaddr *)&Comm->client, (socklen_t *)&len);
		if ( result > 0 )
		{
			buf[result] = 0;
			ss1.Format("接收到来自 %s 的信息，端口号为  %i \r\n", inet_ntoa(Comm->client.sin_addr), ntohs(Comm->client.sin_port));
			ss2.Format(">> %s \r\n", buf);
			Comm->m_edit_recv += (ss1 + ss2);
			//Comm->update();  //之前一直出错就是因为调用了这句话就出错了
			Comm->GetDlgItem(IDC_EDIT_RECV)->SetWindowText(Comm->m_edit_recv);
			Comm->m_edit_ctl_recv.LineScroll(Comm->m_edit_ctl_recv.GetLineCount());//滚动条置底
			fflush(0);
		}	
	}	
}



int CUDPDlg::SetServer()
{
    CString ss;
	UpdateData(TRUE);
	if ( ListenSocket != INVALID_SOCKET )
	{
		add_static_show("清除原端口\r\n");
		closesocket( ListenSocket );	// 如果已经创建、则关闭
		ListenSocket = INVALID_SOCKET; 
	}
	if ( ListenSocket == INVALID_SOCKET )
    {
		ListenSocket = socket(PF_INET, SOCK_DGRAM, 0);
		srv.sin_family = PF_INET;
	    srv.sin_addr.s_addr = htonl( INADDR_ANY );	// 任何地址
	    srv.sin_port = htons( m_edit_src_port );
		
		if ( bind( ListenSocket, (struct sockaddr *)&srv, sizeof(srv)) != 0 )
		{			
			ss.Format("Error: 绑定%d端口失败\r\n",m_edit_src_port);
			add_static_show(ss);
			
			//printf("Error: 绑定失败\n");
			fflush(0);
			closesocket( ListenSocket );
			return false;
		}
		else
        {
			ss.Format("绑定%d端口成功\r\n",m_edit_src_port);
		    add_static_show(ss);

		}
         
        int ThreadID;	// 线程id
		DWORD thread;
		//调用createthread创建线程
		ThreadID = (int)CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)(CUDPDlg::ListenThread), (void *)this, 0, &thread);
		ThreadID = ThreadID ? 0 : 1;	// 如果成功，则返回为0
	    
		if(!ThreadID)
		{
           	add_static_show("线程创建成功\r\n");
		}
		else
		{
            add_static_show("线程创建失败\r\n");
		}
	}
    //m_edit_ctl_static.LineScroll(m_edit_ctl_static.GetLineCount());//滚动条置底


	return 0;
}



void CUDPDlg::OnButtonSetServer() 
{
	// TODO: Add your control notification handler code here
	SetServer();
}

//SendMsg( char *Msg, int Len, char *host, short port )
int CUDPDlg::Send()
{
	UpdateData(TRUE);
	char host_buf[20];
    char *host;
    short port;
    char Msg_buf[1000];
    char *Msg;
	int Len;
    CString ss;
    
	strcpy(host_buf,m_edit_dst_ip);
	host = host_buf;
	port = m_edit_dst_port;
    strcpy(Msg_buf,m_edit_dst_data);
	Msg = Msg_buf;
	Len = strlen(m_edit_dst_data);

	signed int Sent;
	hostent *hostdata;
	if ( atoi(host) )	// 是否IP地址为标准形式
	{
		//u_long ip = inet_addr( host );
		//hostdata = gethostbyaddr( (char *)&ip, sizeof(ip), PF_INET );
	}
	else	// 否则则可能是机器名
	{
		//hostdata = gethostbyname( host );
	}
	
	if ( !hostdata )
	{
		//printf("获得机器名错误\n");
        add_static_show("获得机器名错误\r\n");
		//fflush(0);
		//return false;
	}
	
	CString s_ip = m_edit_dst_ip;
	sockaddr_in dest;	// 发送目标地址
	dest.sin_family = PF_INET;
	//dest.sin_addr = *(in_addr *)(hostdata->h_addr_list[0]);
	dest.sin_addr.S_un.S_addr = inet_addr(s_ip);
	dest.sin_port = htons( port );
	ss.Format("信息已经被发送到主机 %s 端口为 %i \r\n", inet_ntoa(dest.sin_addr), ntohs(dest.sin_port));
    add_static_show(ss);

	//数据发送
	Sent = sendto(ListenSocket, Msg, Len, 0, (sockaddr *)&dest, sizeof(sockaddr_in));
	
	if ( Sent != Len )
	{
		//printf("错误发送UDP信息\n");
		add_static_show("错误发送UDP信息 \r\n");
		fflush(0);
		return false;
	}
	
	return true;
	//return 0;
}




void CUDPDlg::OnButtonSend() 
{
	// TODO: Add your control notification handler code here
	Send();
}


void CUDPDlg::socket_init()
{
	  //构造函数
	ListenSocket = INVALID_SOCKET;	// 开始设置为INVALID_SOCKET
	
#ifdef _WIN32	// 如果是win32系统
	WORD VersionRequested = MAKEWORD(1,1);
	WSADATA wsaData;
	
	WSAStartup(VersionRequested, &wsaData);	// 启动winsock服务
	if ( wsaData.wVersion != VersionRequested )
	{
		printf("Wrong version or WinSock not loaded\n");
		fflush(0);	
	}
#endif

}

void CUDPDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	
	if ( ListenSocket != INVALID_SOCKET )
		closesocket( ListenSocket );	// 如果已经创建、则关闭
	
#ifdef _WIN32	// 调用WSACleanup
	WSACleanup();
#endif
}

void CUDPDlg::add_static_show(CString s)
{
    	m_edit_static += s;   
	    GetDlgItem(IDC_EDIT_STATIC)->SetWindowText(m_edit_static);
        m_edit_ctl_static.LineScroll(m_edit_ctl_static.GetLineCount());//滚动条置底
}


void CUDPDlg::OnButtonClrStatic() 
{
	// TODO: Add your control notification handler code here
		m_edit_static = "";   
	    GetDlgItem(IDC_EDIT_STATIC)->SetWindowText(m_edit_static);
}

void CUDPDlg::OnButtonClrRecv() 
{
	// TODO: Add your control notification handler code here
	m_edit_recv = "";
	GetDlgItem(IDC_EDIT_RECV)->SetWindowText(m_edit_recv);
}

void CUDPDlg::OnButtonClrSet() 
{
	// TODO: Add your control notification handler code here
	m_edit_dst_data = _T("");
	m_edit_dst_ip = _T("");
	m_edit_recv = _T("");
	m_edit_src_port = 0;
	m_edit_static = _T("");
	m_edit_dst_port = 0;
	UpdateData(FALSE);
}