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client.c
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client.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* client.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tunsal <tunsal@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/05 12:32:22 by tunsal #+# #+# */
/* Updated: 2023/11/18 01:57:54 by tunsal ### ########.fr */
/* */
/* ************************************************************************** */
#include "minitalk.h"
void validate_transmission(int signal, siginfo_t *info, void *context)
{
(void) info;
(void) context;
if (signal == SV_MESSAGE_RECEIVED_SIGNAL)
ft_printf("Server has received the message successfully.\n");
}
void send_char(int server_pid, char c)
{
int bit_index;
bit_index = 0;
while (bit_index < BITS_PER_CHAR)
{
if ((c >> bit_index) & 1)
kill(server_pid, BIT_1_SIGNAL);
else
kill(server_pid, BIT_0_SIGNAL);
++bit_index;
usleep(300);
}
}
void send_msg(int server_pid, char *str)
{
struct sigaction sigact;
size_t i;
i = 0;
while (str[i] != '\0')
{
send_char(server_pid, str[i]);
++i;
}
sigact.sa_sigaction = validate_transmission;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction(SV_MESSAGE_RECEIVED_SIGNAL, &sigact, NULL);
send_char(server_pid, '\0');
}
int main(int argc, char **argv)
{
int server_pid;
if (argc != 3)
{
ft_printf("Error! Usage: <program name> <PID> <message>\n");
return (1);
}
server_pid = ft_atoi(argv[1]);
if (server_pid <= 0 || server_pid > 99999)
{
ft_printf("Error! PID is out of valid range.\n");
return (2);
}
send_msg(server_pid, argv[2]);
return (0);
}