一 管道简介

二 实现代码

Server Code:

#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)==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)==FALSE) //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);
			}
		}
		CloseHandle(hPipe);//关闭管道
	}
	system("PAUSE");
	return 0;
}

Clietn Code:

#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;
}

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