用C语言SDK方式编写的采用TCP/IP协议的通信程序

#include<winsock2.h> #include<WINDOWS.H> //#include <stdio.h> #include"resource.h" #define WM_SOCKET WM_USER+1 #pragma comment(lib,"WS2_32.lib") int starservice(); BOOL CALLBACK TCPSeverProc(HWND hDlg,UINT message,WPARAM wParam,LPARAM lParam); HWND hDlgx; char outtext[100]="\0",intext[150]="\0",in[200]="\0"; SOCKET s=INVALID_SOCKET,sc=INVALID_SOCKET; struct sockaddr_in sin,remoteAddr; char charport[10]; long intport; int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevinstance, PSTR szCmdLine, int iCmdShow) { DialogBox(hinstance,TEXT("TCPSever"),NULL,TCPSeverProc); return 0; } BOOL CALLBACK TCPSeverProc(HWND hDlg,UINT message,WPARAM wParam,LPARAM lParam) { RECT rect; HDC hdc; PAINTSTRUCT ps; char T[100]; int nAddrlen; HWND hEditcontrol,hStatic; // int n; // char nc[50]; switch(message) { case WM_INITDIALOG: hDlgx=hDlg; return TRUE; case WM_PAINT: InvalidateRect(hDlg,NULL,TRUE); hdc=BeginPaint(hDlg,&ps); GetClientRect(hDlg,&rect); DrawText(hdc,in,-1,&rect,DT_SINGLELINE|DT_LEFT|DT_VCENTER); EndPaint(hDlg,&ps); return TRUE; case WM_SOCKET: switch(LOWORD(lParam)) {case FD_ACCEPT: nAddrlen=sizeof(remoteAddr); sc=accept(s,(SOCKADDR*)&remoteAddr,&nAddrlen); if(sc==INVALID_SOCKET) MessageBox(NULL,"连接客户端失败","提示",0); //else //{sprintf(T,"与远方地址为：%s的客户端，连接成功！",inet_ntoa(remoteAddr.sin_addr)); // MessageBox( hDlg,T,"提示",0); // } break; case FD_READ: recv(sc,intext,150,0); sprintf(in," 【From Client】：%s",intext); InvalidateRect(hDlg,NULL,TRUE); UpdateWindow(hDlg); // MessageBox(hDlg,intext,"intext内容",0); // sprintf(nc," 从缓冲区拷贝的数据个数：%d",n); //MessageBox(hDlg,nc,"从缓冲区拷贝的数据个数",0); break; case FD_WRITE: break; case FD_CONNECT: break; case FD_CLOSE: closesocket(sc); closesocket(s); s=INVALID_SOCKET; sc=INVALID_SOCKET; WSACleanup(); EnableWindow(GetDlgItem(hDlg,IDC_BUTTON1),TRUE); EnableWindow(GetDlgItem(hDlg,IDC_BUTTON2),FALSE); EnableWindow(GetDlgItem(hDlg,IDC_EDIT2),TRUE); strcpy(in,"\0"); InvalidateRect(hDlg,NULL,TRUE); UpdateWindow(hDlg); break; } return TRUE; case WM_COMMAND: switch(LOWORD(wParam)) { case IDOK: case IDCANCEL: closesocket(sc); closesocket(s); s=INVALID_SOCKET; sc=INVALID_SOCKET; WSACleanup(); EndDialog(hDlg,0); return TRUE; case IDC_BUTTON1: // MessageBox(hDlg,"启动服务","提示",0); GetWindowText(GetDlgItem(hDlg,IDC_EDIT2),charport,10); intport=atoi(charport); // sprintf(T,"端口设置:%d",intport); // MessageBox(hDlg,T,"提示",0); if(starservice()==1) {EnableWindow(GetDlgItem(hDlg,IDC_BUTTON1),FALSE); EnableWindow(GetDlgItem(hDlg,IDC_BUTTON2),TRUE); EnableWindow(GetDlgItem(hDlg,IDC_EDIT2),FALSE); } return TRUE; case IDC_BUTTON2: closesocket(sc); closesocket(s); s=INVALID_SOCKET; sc=INVALID_SOCKET; WSACleanup(); EnableWindow(GetDlgItem(hDlg,IDC_BUTTON1),TRUE); EnableWindow(GetDlgItem(hDlg,IDC_BUTTON2),FALSE); EnableWindow(GetDlgItem(hDlg,IDC_EDIT2),TRUE); strcpy(in,"\0"); InvalidateRect(hDlg,NULL,TRUE); UpdateWindow(hDlg); MessageBox(hDlg,"服务器停止服务","提示",0); return TRUE; case IDC_BUTTON3: hEditcontrol=GetDlgItem(hDlg,IDC_EDIT1); GetWindowText(hEditcontrol,outtext,95); SetWindowText(hEditcontrol,""); send(sc,outtext,sizeof(outtext),0); //MessageBox(NULL,outtext,"tishi",0); return TRUE; } } return FALSE; } //创建，关联，绑定，设置非阻塞，监听。 int starservice() { int n,nresc; //char T[100]; WSADATA wsaData; WORD sockVersion=MAKEWORD(2,0); WSAStartup(sockVersion,&wsaData); s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); if(s==INVALID_SOCKET) {MessageBox(hDlgx,"创建套接字失败！","错误",0); WSACleanup(); return 0; } //else //MessageBox(NULL,"创建套接字成功！","提示",0); sin.sin_family=AF_INET; sin.sin_port=htons(intport); //sprintf(T,"端口设置:%d",intport); //这两条语句用来测试端口设置是否正确。 //MessageBox(hDlgx,T,"提示",0); sin.sin_addr.S_un.S_addr=INADDR_ANY;//inet_addr("172.22.53.166"); if(bind(s,(LPSOCKADDR)&sin,sizeof(sin))==SOCKET_ERROR) {MessageBox(hDlgx,"服务器套接字绑定失败！","错误",0); WSACleanup(); return 0; } //else //MessageBox(hDlgx,"服务器套接字绑定成功！","提示",0); WSAAsyncSelect(s,hDlgx,WM_SOCKET,FD_ACCEPT|FD_READ|FD_WRITE|FD_CLOSE); if(listen(s,3)!=-1) { MessageBox(hDlgx,"服务器启动成功！","正确",0); return 1; } else return 0; }