winapi : CreateNamedPipe - 네임드 파이프 생성

HANDLE WINAPI CreateNamedPipe(
  __in      LPCTSTR lpName,
  __in      DWORD dwOpenMode,
  __in      DWORD dwPipeMode,
  __in      DWORD nMaxInstances,
  __in      DWORD nOutBufferSize,
  __in      DWORD nInBufferSize,
  __in      DWORD nDefaultTimeOut,
  __in_opt  LPSECURITY_ATTRIBUTES lpSecurityAttributes
);

\\.\pipe\pipename

#include <stdio.h>
#include <time.h>
#include <windows.h>

#define PIPE_NAME "\\\\.\\pipe\\echo"
#define BUF_SIZE  1024     // IN, OUT

int main(int argc, char **argv)
{
	HANDLE ph = NULL;
	time_t ctime = 0;
	struct tm *ltm=NULL;
	char buf[256];
	DWORD nread =0, nwrite=0;
	BOOL brtv = FALSE;


	ph = CreateNamedPipe(
		PIPE_NAME,
		PIPE_ACCESS_DUPLEX,
		PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
		PIPE_UNLIMITED_INSTANCES,
		BUF_SIZE,
		BUF_SIZE,
		NMPWAIT_USE_DEFAULT_WAIT,
		NULL);
	if (ph == INVALID_HANDLE_VALUE)
	{
		printf("Pipe create failure!!\n");
		return 1;
	}

	while(1)
	{
		if(ConnectNamedPipe(ph, NULL))
		{
			brtv = ReadFile(ph, buf, 256, &nread, NULL);
			if(!brtv || (nread == 0))
			{
				printf("Read Pipe Error\n");
				return 1;
			}
			brtv = WriteFile(ph, buf, nread, &nwrite, NULL);
			if(!brtv || (nwrite != nread))
			{
				printf("Write Error\n");
			}
		}
	}
}

#include <stdio.h> 
#include <time.h> 
#include <windows.h> 
 
#define PIPE_NAME "\\\\.\\pipe\\echo" 
#define BUF_SIZE  1024     // IN, OUT 
 
int main(int argc, char **argv) 
{ 
    HANDLE ph = NULL; 
    time_t ctime = 0; 
    struct tm *ltm=NULL; 
    char buf[BUF_SIZE]; 
    LPDWORD nread =0, nwrite=0; 
    BOOL brtv = FALSE; 
 

	ph = CreateFile((LPCWSTR)PIPE_NAME, GENERIC_READ | GENERIC_WRITE,
		0,
		NULL,
		OPEN_EXISTING,
		0,
		NULL);
    if (ph == INVALID_HANDLE_VALUE) 
    { 
        printf("Pipe open failure!!\n"); 
        return 1; 
    } 
 
    while(1) 
    {
		printf("> ");
		fgets(buf, BUF_SIZE, stdin);
		if(strncmp(buf, "quit\n",5) == 0)
		{
			break;
		}
		WriteFile(ph, buf, strlen(buf), nwrite, NULL);
		memset(buf, 0x00, BUF_SIZE);
		ReadFile(ph, buf, BUF_SIZE, nread, NULL);
		printf("Server -> %s", buf);
    } 
	return 0;
}