#include <windows.h>
#include <stdio.h>
unsigned long idA, idB;
void A ()
{
HANDLE chan;
char str [2];
unsigned long n;
chan = CreateNamedPipe ("\\\\.\\pipe\\ppp", PIPE_ACCESS_DUPLEX,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 1, 4, 4, 0, 0);
Sleep (100);
WriteFile (chan, "PT", 2, &n, 0);
ReadFile (chan, str, 2, &n, 0);
putchar (str[0]), putchar (str[1]);
}
void B ()
{
HANDLE chan;
char c;
unsigned long n;
chan = CreateFile ("\\\\.\\pipe\\ppp", GENERIC_READ | GENERIC_WRITE,
0, 0, OPEN_EXISTING, 0, 0);
ReadFile (chan, &c, 1, &n, 0);
putchar (c);
ReadFile (chan, &c, 1, &n, 0);
putchar (c);
WriteFile (chan, "AB", 2, &n, 0);
}
int main ()
{
CreateThread (0, 0, (LPTHREAD_START_ROUTINE) A, 0, 0, &idA);
CreateThread (0, 0, (LPTHREAD_START_ROUTINE) B, 0, 0, &idB);
Sleep(1000);
return 0;
}