clientdlgdlg.cpp

使用Socket API实现的客户端程序

// ClientDlgDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ClientDlg.h"
#include "ClientDlgDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define USERPORT 5051
/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CClientDlgDlg dialog

CClientDlgDlg::CClientDlgDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CClientDlgDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CClientDlgDlg)
	m_sendstr = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CClientDlgDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CClientDlgDlg)
	DDX_Control(pDX, IDC_LIST1, m_list);
	DDX_Text(pDX, IDC_EDIT1, m_sendstr);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CClientDlgDlg, CDialog)
	//{{AFX_MSG_MAP(CClientDlgDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CONNECT, OnConnect)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CClientDlgDlg message handlers

BOOL CClientDlgDlg::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
	WSADATA wsaData;
	WORD winsock_version=MAKEWORD(1,2);
	if(WSAStartup(winsock_version,&wsaData)!=0)//载入Windows Sockets
	{
		AfxMessageBox("载入Windows Sockets失败！");
		return FALSE;
	}
	if ((clientsocket = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) //创建套接字
	{ 
		AfxMessageBox("Socket Failed"); 
		return;
	} 
	SOCKADDR_IN sa;
	sa.sin_family=AF_INET;
	sa.sin_addr.s_addr = htonl(INADDR_ANY);
	sa.sin_port=htons(5051);//客户端端口
	if(bind(clientsocket,(PSOCKADDR)&sa,sizeof(sa))==SOCKET_ERROR)//绑定套接字
	{
		closesocket(clientsocket);
		return;
	}
	SOCKADDR_IN saserver;
	saserver.sin_family=AF_INET;
	saserver.sin_addr.s_addr = inet_addr("127.0.0.1");//服务器端IP
	saserver.sin_port=htons(5050);//服务器端口
	if(connect(clientsocket,(PSOCKADDR)&saserver,sizeof(saserver))==SOCKET_ERROR)//连接服务器
	{
		AfxMessageBox("无法连接服务器"); 
		closesocket(clientsocket);
		return;
	}
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CClientDlgDlg::OnConnect() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);//获取对话框数据
	char buf[1024];
	char *p_c;
	int count;
	int numchr;
	//发送速据
	p_c=buf;
	p_c=(LPSTR)(LPCTSTR)m_sendstr;//类型转换
	count=sizeof(buf);
	numchr=0;
	do
	{
		numchr=send(clientsocket,p_c,count,0);//向服务器发送数据
		if(numchr==SOCKET_ERROR)
		{
			closesocket(clientsocket);//关闭套接字
			return;
		}
		else
		{
			p_c+=numchr;
			count-=numchr;
		}
	}while(count>0);
	p_c=buf;
	count=sizeof(buf);
	numchr=0;
	do
	{
		numchr=recv(clientsocket,p_c,count,0);//从服务器接收数据
		if(numchr==SOCKET_ERROR)
		{
			closesocket(clientsocket);//关闭套接字
			return;
		}
		else
		{
			p_c+=numchr;
			count-=numchr;
		}
	}while(count>0);
	CString str;
	str=buf;
	m_list.AddString(str);//列表框写入接收数据
	m_sendstr="";//编辑框内容清空
	UpdateData(false);
}

void CClientDlgDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	CDialog::OnTimer(nIDEvent);
}