#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>

#include "header.h"


void box_RX(int transmit, int recieve);
void box_TX(int transmit, int recieve);

char buffer[128];
FILE* test;
int main()
{
	pid_t child;
	int TX[2];
	int RX[2];
	ssize_t rw_return;
	int pipe_return;

	assert((pipe_return = pipe(TX)) == 0);
	assert((pipe_return = pipe(RX)) == 0);

	if((child = fork()) == -1)
	{
		return -1;
	} else if(child == 0)
	{
		/* child RX side*/
		rw_return = read(RX[1], buffer, 128);
		
		if(rw_return != -1)
		{
			perror("CHILD READ:");
		}
		rw_return = write(TX[0], buffer, 128);
		assert(rw_return != -1);
		
		box_RX(TX[0], RX[1]);
	} else
	{
		fgets(buffer, 128, stdin);
		rw_return = write(RX[0], buffer, 128);
		assert(rw_return != -1);
		buffer[0] = '\0';
		rw_return = read(TX[1], buffer, 128);
		assert(rw_return != -1);
		printf("%s", buffer);
		box_TX(RX[0], TX[1]);
		/* parent TX side*/
	}
	return 0;
}

void box_RX(int transmit, int recieve)
{
}
void box_TX(int transmit, int recieve)
{
}