italoholanda / c_minitalk

MINITALK

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/*   MINITALK                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: igomes-h <[e-mail]>         +#+  +:+       +#+        */
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/*                                                    ###   ########.fr       */
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/* ************************************************************************** */

About

This project consists of a way to implement communications between two processes using unix signals.

We can send the SIGUSR1 and SIGUSR2 signals as if they were binary sequences and in this way send a char (8 bits sequence). So, the first thing to do is to is loop through a string and, for every char, make the bin conversion.

Like that:

CHAR =      10101001
----------------------------
CHAR >> 7 = 00000001 & 1 = 1
CHAR >> 6 = 00000010 & 1 = 0
CHAR >> 5 = 00000101 & 1 = 1
CHAR >> 4 = 00001010 & 1 = 0
CHAR >> 3 = 00010101 & 1 = 1
CHAR >> 2 = 00101010 & 1 = 0
CHAR >> 1 = 01010100 & 1 = 0
CHAR >> 0 = 10101001 & 1 = 1
----------------------------
RESULTS:
1, 0, 1, 0, 1, 0, 0, 1
----------------------------

Or

SIGUSR2, SIGUSR1, SIGUSR2, SIGUSR1, SIGUSR2, SIGUSR1, SIGUSR1, SIGUSR2

The client will send the signals to the server and the server will do the (de)conversion every 8 signals and then will print it in the screen.

Usage:

• use $ make to compile all source files.
• use $ ./server to start server and get your PID.
• use $ ./client <SERVER PID> <STRING> to send a string to the server.