命名管道跨进程通讯

客户端代码：

#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的创建成功！  
  
    BOOL bRet = WaitNamedPipe(TEXT(\\\\.\\Pipe\\mypipe), NMPWAIT_WAIT_FOREVER);  
  
    if (!bRet)  
    {  
        printf(connect the namedPipe Failed!\n);  
        return 0;  
    }  
  
    HANDLE hPipe = CreateFile(          //管道属于一种特殊的文件  
        TEXT(\\\\.\\Pipe\\mypipe),    //创建的文件名  
        GENERIC_READ | GENERIC_WRITE,   //文件模式  
        0,                              //是否共享  
        NULL,                           //指向一个Security_ATTRIBUTES结构的指针  
        OPEN_EXISTING,                  //创建参数  
        FILE_ATTRIBUTE_norMAL,          //文件属性(隐藏,只读)norMAL为默认属性  
        NULL);                          //模板创建文件的句柄  
  
    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) //向服务器发送内容  
            {  
                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);  //接受服务发送过来的内容  
                printf(From Server: data = %s, size = %d\n, rbuf, rlen);  
            }  
            Sleep(1000);  
        }  
        CloseHandle(hPipe);//关闭管道  
    }  
  
    system(pause);  
    return 0;  
}

服务端代码：

#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,                                 //管道类型   
        PIPE_TYPE_MESSAGE|PIPE_READMODE_MESSAGE|PIPE_WAIT,  //管道参数  
        PIPE_UNLIMITED_INSTANCES,                           //管道能创建的最大实例数量  
        0,                                                  //输出缓冲区长度 0表示默认  
        0,                                                  //输入缓冲区长度 0表示默认  
        NMPWAIT_WAIT_FOREVER,                               //超时时间  
        NULL);                                              //指定一个Security_ATTRIBUTES结构,或者传递零值  
  
    if (INVALID_HANDLE_VALUE == hPipe)  
    {  
        printf(Create Pipe Error(%d)\n,GetLastError());  
    }  
    else  
    {  
        printf(Waiting For Client Connection...\n);  
  
        if(!ConnectNamedPipe(hPipe, NULL))  //阻塞等待客户端连接。  
        {  
            printf(Connection Failed!\n);  
        }  
        else  
        {  
            printf(Connection Success!\n);  
        }  
  
        while (true)  
        {  
            if(!ReadFile(hPipe,buf,256,&rlen,NULL)) //接受客户端发送过来的内容  
            {             
                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); //向客户端发送内容  
                printf(To Client: data = %s, size = %d\n, wbuf, wlen);  
                Sleep(1000);  
            }  
        }  
        Flushfilebuffers(hPipe);   
        disconnectNamedPipe(hPipe);   
        CloseHandle(hPipe);//关闭管道  
    }  
  
    system(pause);  
    return 0;  
}