MFC与IP多播技术的局域网聊天器网络课程设计
网络课程设计用 Visual C++实现局域网 IP 多播
// task3UIDlg.cpp : implementation file
//
#include
#include
#include
#include
#include
#pragma comment(lib,"ws2_32")
#include "StdAfx.h"
#include "task3UI.h"
#include "task3UIDlg.h"
#include "../task3UI/CInitSock.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define MCASTADDR "233.0.0.1" //本例使用的多播组地址。
#define MCASTPORT 9999 //本地端口号。
#define BUFSIZE 1024 //发送数据缓冲大小。
WSADATA wsd;
struct sockaddr_in local,remote,from;
SOCKET sock,sockM;
TCHAR sendbuf[BUFSIZE];
TCHAR recvbuf[BUFSIZE];
char ip[255];
int len;
CString strrece,strsend;
int CTask3UIDlg::KMeansSegment()
{
// 主要处理函数在这里写
int ret;
while(1){
if(( ret = recvfrom(sock,recvbuf,BUFSIZE,0,(struct sockaddr*)&from;,&len;)) == SOCKET_ERROR)
{
printf("recvfrom failed with:%d\n",WSAGetLastError());
closesocket(sockM);
closesocket(sock);
WSACleanup();
return -1;
}
if( strcmp(recvbuf,"QUIT") == 0 ) {
break;
}else{
recvbuf[ret] = '\0';
if(strcmp(ip,inet_ntoa(from.sin_addr))!=0){
printf("%s : %s\n",inet_ntoa(from.sin_addr),recvbuf);
GetDlgItemText(IDC_RECE,strrece);
SetDlgItemText(IDC_RECE,strrece+inet_ntoa(from.sin_addr)+":"+recvbuf+"\r\n");
}
}
}
return 0L;
}
UINT myproc(LPVOID lParam)
{
CTask3UIDlg *pWnd = (CTask3UIDlg *)lParam; //将窗口指针赋给无类型指针
pWnd->KMeansSegment(); //要执行的函数
return 1;
}
bool GetLocalIP(char* ip)
{
char szText[256];
//获取本机主机名称
int iRet;
iRet = gethostname(szText,256);
int a = WSAGetLastError();
if (iRet!=0)
{
printf("gethostname() Failed!");
return FALSE;
}
//通过主机名获取到地址信息
HOSTENT *host = gethostbyname(szText);
if (NULL==host)
{
printf("gethostbyname() Failed!");
return false;
}
in_addr PcAddr;
for (int i=0;;i++)
{
char *p = host->h_addr_list[i];
if (NULL==p)
{
break;
}
memcpy(&(PcAddr.S_un.S_addr),p,host->h_length);
ip = ::inet_ntoa(PcAddr);
}
return true;
}
int chushihua()
{
len = sizeof( struct sockaddr_in);
//初始化 WinSock2.2
if( WSAStartup( MAKEWORD(2,2),&wsd;) != 0 )
{
printf("WSAStartup() failed\n");
return -1;
}
if((sock=WSASocket(AF_INET,SOCK_DGRAM,0,NULL,0,
WSA_FLAG_MULTIPOINT_C_LEAF|WSA_FLAG_MULTIPOINT_D_LEAF| WSA_FLAG_OVERLAPPED)) == INVALID_SOCKET)
{
printf("socket failed with:%d\n",WSAGetLastError());
WSACleanup();
return -1;
}
//将 sock 绑定到本机某端口上。
local.sin_family = AF_INET;
local.sin_port = htons(MCASTPORT);
local.sin_addr.s_addr = INADDR_ANY;
if( bind(sock,(struct sockaddr*)&local;,sizeof(local)) == SOCKET_ERROR )
{
printf( "bind failed with:%d \n",WSAGetLastError());
closesocket(sock);
WSACleanup();
return -1;
}
//加入多播组
remote.sin_family = AF_INET;
remote.sin_port = htons(MCASTPORT);
remote.sin_addr.s_addr = inet_addr( MCASTADDR );
if(( sockM = WSAJoinLeaf(sock,(SOCKADDR*)&remote;, sizeof(remote),NULL,NULL,NULL,NULL, JL_BOTH)) == INVALID_SOCKET)
{
printf("WSAJoinLeaf() failed:%d\n",WSAGetLastError());
closesocket(sock);
WSACleanup();
return -1;
}
}
int mainmain()
{
//发送多播数据，当用户在控制台输入"QUIT"时退出。
//while(1)
//{
//scanf("%s",sendbuf);
if( sendto(sockM,(char*)sendbuf,strlen(sendbuf),0,(struct sockaddr*)
&remote;,sizeof(remote))==SOCKET_ERROR)
{
printf("sendto failed with: %d\n",WSAGetLastError());
closesocket(sockM);
closesocket(sock);
WSACleanup();
return -1;
}
//if(strcmp(sendbuf,"QUIT")==0) break;
//Sleep(500);
//}
/*closesocket(sockM);
closesocket(sock);
WSACleanup();*/
return 0;
}
/////////////////////////////////////////////////////////////////////////////
// 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()
/////////////////////////////////////////////////////////////////////////////
// CTask3UIDlg dialog
CTask3UIDlg::CTask3UIDlg(CWnd* pParent /*=NULL*/)
: CDialog(CTask3UIDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CTask3UIDlg)
// 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);
}
void CTask3UIDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CTask3UIDlg)
DDX_Control(pDX, IDC_RECE, m_Edit);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CTask3UIDlg, CDialog)
//{{AFX_MSG_MAP(CTask3UIDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_tishi, Ontishi)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CTask3UIDlg message handlers
BOOL CTask3UIDlg::OnInitDialog()
{
CDialog::OnInitDialog();
chushihua();
GetLocalIP(ip);
// 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
AfxBeginThread(myproc, (LPVOID)this);
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CTask3UIDlg::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 CTask3UIDlg::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(▭);
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 CTask3UIDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CTask3UIDlg::OnOK()
{
//CString strrece,strsend;
// TODO: Add your control notification handler code here
GetDlgItemText(IDC_SEND,strsend);
strcpy(sendbuf, strsend);
mainmain();
}
void CTask3UIDlg::OnCancel()
{
// TODO: Add extra cleanup here
CDialog::OnCancel();
}
void CTask3UIDlg::Ontishi()
{
// TODO: Add your control notification handler code here
}
void CTask3UIDlg::Onsend()
{
// 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
}
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