MFC socket编程

￡神魔★判官ぃ 2022-09-18 10:57 160阅读 0赞

源码地址:[http://download.csdn.net/detail/gws1229/6572737][http_download.csdn.net_detail_gws1229_6572737]

新建两个基于对话框的工程，分别为sFile、cFile。在s端添加两个Edit：一个显示窗口IDC\_EDIT1(点击右键选择Properties->Styles，选中Multiline，Vertical scroll、Read-only三项)，一个输入窗口IDC\_EDIT2。然后增加一个发送按钮：IDC\_BtnSend。在c端添加三个Edit：一个显示窗口IDC\_EDIT1(点击右键选择Properties->Styles，选中Multiline，Vertical scroll、Read-only三项)，一个输入窗口IDC\_EDIT2，一个IP地址输入窗口IDC\_EDIT3。再增加两个按钮：一个发送按钮IDC\_SEND，一个连接服务器按钮IDC\_btnConnect。

**服务器端具体步骤如下：**  
1、在StdAfx.h中添加 \#include <afxsock.h>  // MFC socket extensions  
   在Resource.h中添加\#define IDP\_SOCKETS\_INIT\_FAILED         103  
   在sFileDlg.h中添加public：void update(CString s);  
   在sFileDlg.h中添加private：  
                             CEdit\* show\_edit;  
                      CEdit\* send\_edit;  
2、在sFileDlg.cpp中添加\#include <winsock2.h>(加在\#include "stdafx.h"之前)  
                       \#pragma comment(lib, "WS2\_32.lib")  
   新建两个socket：SOCKET listen\_sock;  
                   SOCKET sock;  
   声明线程函数  UINT server\_thd(LPVOID p);  
3、在OnInitDialog()函数中添加：  
        show\_edit = (CEdit \*)GetDlgItem(IDC\_EDIT1);  
 send\_edit = (CEdit \*)GetDlgItem(IDC\_EDIT2);  
 send\_edit->SetFocus();

char name\[80\];  
 CString IP;  
 hostent\* pHost;   
 gethostname(name, 128);//获得主机名   
 pHost = gethostbyname(name);//获得主机结构   
 IP = inet\_ntoa(\*(in\_addr \*)pHost->h\_addr);  
 update("本机IP地址：" + IP);  
 AfxBeginThread(&server\_thd, 0);  
   添加函数update():  
   void CSFileDlg::update(CString s)  
\{  
 show\_edit->ReplaceSel(s + "/r/n");  
\}  
  添加线程函数server\_thd()：  
   UINT server\_thd(LPVOID p)  
\{  
 WSADATA wsaData;

WORD wVersion;

wVersion = MAKEWORD(2,2);

WSAStartup(wVersion,&wsaData);

// WSAStartup(0x0202, &wsaData);  
 SOCKADDR\_IN local\_addr;  
 SOCKADDR\_IN client\_addr;  
 int iaddrSize = sizeof(SOCKADDR\_IN);  
 int res;  
 char msg\[1024\];  
 CSFileDlg \* dlg = (CSFileDlg \*)AfxGetApp()->GetMainWnd();  
 local\_addr.sin\_family = AF\_INET;  
 local\_addr.sin\_port = htons(5150);  
 local\_addr.sin\_addr.s\_addr = htonl(INADDR\_ANY);  
   
 if( (listen\_sock = socket(AF\_INET, SOCK\_STREAM, IPPROTO\_TCP)) == INVALID\_SOCKET )  
 \{   
  dlg->update("创建监听失败");  
 \}  
 if( bind(listen\_sock, (struct sockaddr\*) &local\_addr, sizeof(SOCKADDR\_IN)) )  
 \{   
  dlg->update("绑定错误");  
 \}  
 listen(listen\_sock, 1);  
 if( (sock = accept(listen\_sock, (struct sockaddr \*)&client\_addr, &iaddrSize)) == INVALID\_SOCKET)  
 \{   
  dlg->update("accept 失败");  
 \}  
 else  
 \{   
  CString port;  
  port.Format("%d", int(ntohs(client\_addr.sin\_port)));  
  dlg->update( "已连接来自：" + CString(inet\_ntoa(client\_addr.sin\_addr)) + "  端口：" +   
   port);  
 \}  
   
 接收数据  
 while(1)  
 \{   
  if( (res = recv(sock, msg, 1024, 0)) == -1 )  
  \{   
   dlg->update("失去连接");  
   break;  
  \}  
  else  
  \{   
   msg\[res\] = '/0';  
   dlg->update("client:" + CString(msg));  
  \}  
 \}  
 return 0;  
\}  
4、添加按钮实现函数void CSFileDlg::OnBtnSend()：  
   void CSFileDlg::OnBtnSend()   
\{   
 // TODO: Add your control notification handler code here  
 CString s;  
 char \* msg;  
 send\_edit->GetWindowText(s);  
 msg = s.GetBuffer(s.GetLength());  
 if(send(sock, msg, strlen(msg), 0) == SOCKET\_ERROR)  
 \{   
  show\_edit->ReplaceSel("发送失败/r/n");  
 \}  
 else if(s == "")  
 \{   
  MessageBox("请输入信息");  
 \}  
 else  
 \{   
  show\_edit->ReplaceSel("server:" + s + "/r/n");//消息上屏，清空输入，并重获焦点  
  send\_edit->SetWindowText("");  
  send\_edit->SetFocus();  
 \}  
\}  
5、在InitInstance()函数中添加：  
   if (!AfxSocketInit())  
 \{   
  AfxMessageBox(IDP\_SOCKETS\_INIT\_FAILED);  
  return FALSE;  
 \}

**客户端具体步骤如下：**  
1、在StdAfx.h中添加 \#include <afxsock.h>  // MFC socket extensions  
   在Resource.h中添加\#define IDP\_SOCKETS\_INIT\_FAILED         103  
   在sFileDlg.h中添加public：void update(CString s);  
   在sFileDlg.h中添加private：  
                      CEdit\* edit1;  
                      CButton\* btnconn;  
                             CEdit\* send\_edit;  
                      CEdit\* ip\_edit;  
2、在sFileDlg.cpp中添加\#include <winsock2.h>(加在\#include "stdafx.h"之前)  
                       \#pragma comment(lib, "WS2\_32.lib")  
   新建一个socket：SOCKET sock;  
   声明线程函数  UINT recv\_thd(LPVOID p);  
3、在OnInitDialog()函数中添加：  
        edit1 = (CEdit \*)GetDlgItem(IDC\_EDIT1);  
 send\_edit = (CEdit \*)GetDlgItem(IDC\_EDIT2);  
 btnconn = (CButton \*)GetDlgItem(IDC\_btnConnect);  
 ip\_edit = (CEdit \*)GetDlgItem(IDC\_EDIT3);

ip\_edit->SetWindowText("127.0.0.1");

添加函数update():  
   void CCFileDlg::update(CString s)  
\{  
 edit1->ReplaceSel(s + "/r/n");  
\}  
  添加线程函数recv\_thd()：  
  UINT recv\_thd(LPVOID p)  
\{  
 int res;  
 char msg\[1024\];  
 CString s;  
 CCFileDlg \* dlg = (CCFileDlg \*) AfxGetApp()->GetMainWnd();  
 dlg->update("in thd");  
   
 while(1)  
 \{  
  if( (res = recv(sock, msg, 1024, 0)) == -1)  
  \{  
   dlg->update("失去连接");  
   break;  
  \}  
  else  
  \{  
   msg\[res\] = '/0';  
   dlg->update("server:" + CString(msg));  
  \}  
 \}  
   
 //closesocket(sock);  
 return 0;  
\}  
4、添加按钮实现函数void CCFileDlg::OnSend()：  
   void CCFileDlg::OnSend()   
\{  
 // TODO: Add your control notification handler code here  
 CString s;  
 char \* msg;  
 send\_edit->GetWindowText(s);  
 msg = s.GetBuffer(s.GetLength());  
 if(send(sock, msg, strlen(msg), 0) == SOCKET\_ERROR)  
 \{  
  update("发送失败");  
 \}  
 else if(s == "")  
 \{  
  MessageBox("请输入信息");  
 \}  
 else  
 \{  
  update("client:" + s);//消息上屏，清空输入，并重获焦点  
  send\_edit->SetWindowText("");  
  send\_edit->SetFocus();  
 \}  
\}  
5、添加连接按钮实现函数OnConnect()：  
   void CCFileDlg::OnConnect()   
\{  
 // TODO: Add your control notification handler code here  
 WSADATA wsaData;  
 SOCKADDR\_IN server\_addr;

WORD wVersion;

wVersion = MAKEWORD(2,2);

WSAStartup(wVersion,&wsaData);

// WSAStartup(0x0202, &wsaData);  
 CString ip;  
 ip\_edit->GetWindowText(ip);//取得服务器的IP地址  
 server\_addr.sin\_addr.s\_addr = inet\_addr(ip);  
 server\_addr.sin\_family = AF\_INET;  
 server\_addr.sin\_port = htons(5150);  
 if( (sock = socket(AF\_INET, SOCK\_STREAM, IPPROTO\_TCP)) == INVALID\_SOCKET)  
 \{   
  edit1->ReplaceSel("create socket error/r/n");  
 \}  
 if( connect(sock, (struct sockaddr \*) &server\_addr, sizeof(SOCKADDR\_IN)) == SOCKET\_ERROR)  
 \{   
  edit1->ReplaceSel("连接失败/r/n");  
 \}  
 else  
 \{   
  edit1->ReplaceSel("连接成功/r/n");  
  AfxBeginThread(&recv\_thd, 0);  
  btnconn->EnableWindow(FALSE);//按钮变灰  
 \}  
\}  
6、在InitInstance()函数中添加：  
   if (!AfxSocketInit())  
 \{   
  AfxMessageBox(IDP\_SOCKETS\_INIT\_FAILED);  
  return FALSE;  
 \}

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