上位机TCP通信源代码(支持客户端以及服务端)

【实例截图】

【核心代码】

// SockDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Sock.h"
#include "SockDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSockDlg dialog

CSockDlg::CSockDlg(CWnd* pParent /*=NULL*/)
: CDialog(CSockDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSockDlg)
	m_strMessage = _T("");
	m_strName = _T("");
	m_iPort = 0;
	m_iType = -1;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSockDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSockDlg)
	DDX_Control(pDX, IDC_LSENT, m_ctlSent);
	DDX_Control(pDX, IDC_LRECVD, m_ctlRecvd);
	DDX_Control(pDX, IDC_BCONNECT, m_ctlConnect);
	DDX_Text(pDX, IDC_EMSG, m_strMessage);
	DDX_Text(pDX, IDC_ESERVNAME, m_strName);
	DDX_Text(pDX, IDC_ESERVPORT, m_iPort);
	DDX_Radio(pDX, IDC_RCLIENT, m_iType);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSockDlg, CDialog)
//{{AFX_MSG_MAP(CSockDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_RCLIENT, OnRType)
ON_BN_CLICKED(IDC_RSERVER, OnRtype)
ON_BN_CLICKED(IDC_BCONNECT, OnBconnect)
ON_BN_CLICKED(IDC_BSEND, OnBsend)
ON_BN_CLICKED(IDC_BCLOSE, OnBclose)
ON_EN_CHANGE(IDC_ESERVNAME, OnChangeEservname)
ON_EN_CHANGE(IDC_ESERVPORT, OnChangeEservport)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSockDlg message handlers

BOOL CSockDlg::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
	m_iType=0;
	m_strName="192.168.1.110";
	m_iPort=9761;
    GetDlgItem(IDC_EMSG)->EnableWindow(TRUE);
	GetDlgItem(IDC_BSEND)->EnableWindow(TRUE);
	GetDlgItem(IDC_STATICMSG)->EnableWindow(TRUE);
    m_strMessage="欢迎使用TCP通信简易例程!";
	
	UpdateData(FALSE);
	
	
	m_sListenSocket.SetParent (this);
	
	m_sConnectSocket.SetParent (this);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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



void CSockDlg::OnRType() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if(m_iType==0)
		m_ctlConnect.SetWindowText("连接");
	
	else
	{m_ctlConnect.SetWindowText("监听");
	
	}
}

void CSockDlg::OnRtype() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if(m_iType==0)
		m_ctlConnect.SetWindowText("连接");
	else
	{  m_ctlConnect.SetWindowText("监听");
	
	}
	
}

void CSockDlg::OnBconnect() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);

	
	if(m_iType==0)
	{
		m_sConnectSocket.Create ();
		m_sConnectSocket.Connect (m_strName,m_iPort);
	//	if(m_sConnectSocket.Connect (m_strName,m_iPort) == TRUE)
	//	{	
	//		AfxMessageBox("连接失败！");
	//		return;
	//	}
	}
	else
	{
		m_sListenSocket.Create (m_iPort);
		m_sListenSocket.Listen ();
	}
	if(m_strName=="")
	{
		AfxMessageBox("此框不能为空，请输入计算机名或计算机的IP地址！");
	}
	GetDlgItem(IDC_BCONNECT)->EnableWindow(FALSE);
	GetDlgItem(IDC_ESERVNAME)->EnableWindow(FALSE);
	GetDlgItem(IDC_ESERVPORT)->EnableWindow(FALSE);
	GetDlgItem(IDC_STATICNAME)->EnableWindow(FALSE);
	GetDlgItem(IDC_STATICPORT)->EnableWindow(FALSE);
	GetDlgItem(IDC_RCLIENT)->EnableWindow(FALSE);
	GetDlgItem(IDC_RSERVER)->EnableWindow(FALSE);
	GetDlgItem(IDC_STATICTYPE)->EnableWindow(FALSE);
}


void CSockDlg::OnAccept()
{
	
    m_sListenSocket.Accept (m_sConnectSocket);
	GetDlgItem(IDC_EMSG)->EnableWindow(TRUE);
	GetDlgItem(IDC_BSEND)->EnableWindow(TRUE);
	GetDlgItem(IDC_STATICMSG)->EnableWindow(FALSE);
	
}



void CSockDlg::OnConnect()
{
    GetDlgItem(IDC_EMSG)->EnableWindow(TRUE);
	GetDlgItem(IDC_BSEND)->EnableWindow(TRUE);
	GetDlgItem(IDC_STATICMSG)->EnableWindow(TRUE);
	GetDlgItem(IDC_BCLOSE)->EnableWindow(TRUE);
}

void CSockDlg::OnSend()
{
	
    //OnBsend();
}


void CSockDlg::OnReceive()
{
	char *pbuf=new char[1025];
	int ibufsize=1024;
	int ircvd;
	CString strrecvd;
	ircvd=m_sConnectSocket.Receive (pbuf,ibufsize);
	if(ircvd==SOCKET_ERROR)
	{
		MessageBox("");
	}
	else
	{pbuf[ircvd]=NULL;
	strrecvd=pbuf;
	m_ctlRecvd.AddString(strrecvd);
	UpdateData(FALSE);
	}
}



void CSockDlg::OnClose()
{
	m_sConnectSocket.Close ();
    GetDlgItem(IDC_EMSG)->EnableWindow(FALSE);
	GetDlgItem(IDC_BSEND)->EnableWindow(FALSE);
	GetDlgItem(IDC_STATICMSG)->EnableWindow(FALSE);
	GetDlgItem(IDC_BCLOSE)->EnableWindow(FALSE);
	if(m_iType==0)
	{
		GetDlgItem(IDC_BCONNECT)->EnableWindow(TRUE);
		GetDlgItem(IDC_ESERVNAME)->EnableWindow(TRUE);
		GetDlgItem(IDC_ESERVPORT)->EnableWindow(TRUE);
		GetDlgItem(IDC_STATICNAME)->EnableWindow(TRUE);
		GetDlgItem(IDC_STATICPORT)->EnableWindow(TRUE);
		GetDlgItem(IDC_RCLIENT)->EnableWindow(TRUE);
		GetDlgItem(IDC_RSERVER)->EnableWindow(TRUE);
		GetDlgItem(IDC_STATICTYPE)->EnableWindow(TRUE);
	}
	
}

void CSockDlg::OnBsend() 
{
	// TODO: Add your control notification handler code here
	int ilen;
	int isent;
	
	UpdateData(TRUE);
	if(m_strMessage!="")
	{
		ilen=m_strMessage.GetLength ();
		isent=m_sConnectSocket.Send (LPCTSTR(m_strMessage),ilen);
		if(isent==SOCKET_ERROR)
		{
			MessageBox("连接失败，请重试！");
		}
		else
		{
			m_ctlSent.AddString (m_strMessage);
			UpdateData(FALSE);
		}
	}
}

void CSockDlg::OnBclose() 
{
	// TODO: Add your control notification handler code here
	OnClose();
}

void CSockDlg::OnChangeEservname() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
}

void CSockDlg::OnChangeEservport() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
}