Minitalk Project

This project consists of two programs, server and client, that communicate with each other using signals. The client program sends a message to the server program by converting characters to their ASCII values and sending them as signals. The server program receives the signals and reconstructs the message.

Files

• ft_printf: This directory contains the printf function project.
• server.c: This file contains the function responsible for receiving signals and printing the message.
• client.c: This file contains the function that sends messages as signals.
• ft_atoi.c: This file contains the implementation of the ft_atoi function.
• Makefile: This file contains the rules for compiling the project.
• minitalk.h: This file contains the declarations of functions and any necessary macros.

Signals

In Unix-like operating systems, signals are software interrupts delivered to a process. They can be used for communication between processes. In this project, we use signals to send messages from the client process to the server process.

• SIGUSR1: This signal is used to represent the binary digit 0.
• SIGUSR2: This signal is used to represent the binary digit 1.

Bitwise Operators

Bitwise operators are used to perform operations on individual bits of binary numbers.

• & (AND): Performs a bitwise AND operation.
• | (OR): Performs a bitwise OR operation.
• ^ (XOR): Performs a bitwise XOR (exclusive OR) operation.
• ~ (NOT): Performs a bitwise NOT operation (flips the bits).
• << (Left Shift): Shifts bits to the left by a specified number of positions.
• >> (Right Shift): Shifts bits to the right by a specified number of positions.

These operators are used in the client program to convert characters to their ASCII values and send them as individual bits.

pause() Function

The pause() function causes the calling process to sleep until a signal is received. It is used in the server program to wait for incoming signals.

Compilation

To compile the project, use the provided Makefile:

make

This will generate the server and client executables.

Usage

Start the server program in one terminal:

./server

In a separate terminal, start the client program and provide the PID of the server process and the text to send as arguments:

./client [server_pid] [message]

Replace [server_pid] with the actual PID of the server process.