具名管道跨進程通訊

用戶端代碼：

#include "stdafx.h"  #include <stdio.h>  #include <windows.h>  #include <ctime>    int main(int argc, _TCHAR* argv[])  {      srand(time(NULL));        DWORD wlen = 0;      Sleep(1000);//等待pipe的建立成功！        BOOL bRet = WaitNamedPipe(TEXT("\\\\.\\Pipe\\mypipe"), NMPWAIT_WAIT_FOREVER);        if (!bRet)      {          printf("connect the namedPipe failed!\n");          return 0;      }        HANDLE hPipe = CreateFile(          //管道屬於一種特殊的檔案          TEXT("\\\\.\\Pipe\\mypipe"),    //建立的檔案名稱          GENERIC_READ | GENERIC_WRITE,   //檔案模式          0,                              //是否共用          NULL,                           //指向一個SECURITY_ATTRIBUTES結構的指標          OPEN_EXISTING,                  //建立參數          FILE_ATTRIBUTE_NORMAL,          //檔案屬性(隱藏,唯讀)NORMAL為預設屬性          NULL);                          //模板建立檔案的控制代碼        if (INVALID_HANDLE_VALUE == hPipe)      {          printf("open the exit pipe failed!\n");      }      else      {          while(true)          {              char buf[256] = "";              sprintf(buf,"%s%d",buf,rand()%1000);              if(WriteFile(hPipe,buf,sizeof(buf),&wlen,0)==FALSE) //向伺服器發送內容              {                  printf("write to pipe failed!\n");                  break;              }              else              {                  printf("To Server: data = %s, size = %d\n", buf, wlen);                  char rbuf[256] = "";                  DWORD rlen = 0;                  ReadFile(hPipe, rbuf, sizeof(rbuf), &rlen, 0);  //接受服務發送過來的內容                  printf("From Server: data = %s, size = %d\n", rbuf, rlen);              }              Sleep(1000);          }          CloseHandle(hPipe);//關閉管道      }        system("pause");      return 0;  }

服務端代碼：

#include "stdafx.h"  #include <stdio.h>  #include <windows.h>  #include <ctime>    int main(int argc, _TCHAR* argv[])  {      srand(time(NULL));        char buf[256] = "";      DWORD rlen = 0;      HANDLE hPipe = CreateNamedPipe(          TEXT("\\\\.\\Pipe\\mypipe"),                        //管道名          PIPE_ACCESS_DUPLEX,                                 //管道類型           PIPE_TYPE_MESSAGE|PIPE_READMODE_MESSAGE|PIPE_WAIT,  //管道參數          PIPE_UNLIMITED_INSTANCES,                           //管道能建立的最大執行個體數量          0,                                                  //輸出緩衝區長度 0表示預設          0,                                                  //輸入緩衝區長度 0表示預設          NMPWAIT_WAIT_FOREVER,                               //逾時時間          NULL);                                              //指定一個SECURITY_ATTRIBUTES結構,或者傳遞零值        if (INVALID_HANDLE_VALUE == hPipe)      {          printf("Create Pipe Error(%d)\n",GetLastError());      }      else      {          printf("Waiting For Client Connection...\n");            if(!ConnectNamedPipe(hPipe, NULL))  //阻塞等待用戶端串連。          {              printf("Connection failed!\n");          }          else          {              printf("Connection Success!\n");          }            while (true)          {              if(!ReadFile(hPipe,buf,256,&rlen,NULL)) //接受用戶端發送過來的內容              {                             printf("Read Data From Pipe Failed!\n");                  break;              }              else              {                  printf("From Client: data = %s, size = %d\n", buf, rlen);                                    char wbuf[256] = "";                  sprintf(wbuf, "%s%d", wbuf, rand()%1000);                  DWORD wlen = 0;                  WriteFile(hPipe, wbuf, sizeof(wbuf), &wlen, 0); //向用戶端發送內容                  printf("To Client: data = %s, size = %d\n", wbuf, wlen);                  Sleep(1000);              }          }          FlushFileBuffers(hPipe);           DisconnectNamedPipe(hPipe);           CloseHandle(hPipe);//關閉管道      }        system("pause");      return 0;  }