This project has been created as part of the 42 curriculum by lcalero, ekeisler, jaubry--.

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ft_irc

A lightweight IRC server implemented in C++98, built as part of the 42 curriculum.

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Description

ft_irc is a simplified Internet Relay Chat (IRC) server written in C++98.

The goal of this project is to implement a basic IRC server that:

• Accepts TCP connections from standard IRC clients
• Handles user authentication (PASS, NICK, USER)
• Manages channels and channel modes (i, t, k, o, l)
• Routes private and channel messages between clients
• Supports channel operator commands: KICK, INVITE, TOPIC, MODE
• Respects the core behavior of the IRC protocol as described in the subject

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Instructions

Prerequisites

• The C++98-compatible compiler clang (llvm-12)
• irssi (IRC Client)
• Linux

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Build & Run

Refer to the runbook

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Features

Feature	Status
TCP/IP client handling	✅
Authentication (PASS, NICK, USER)	✅
Channel join / messaging	✅
Private messages	✅
Channel operators	✅
KICK / INVITE / TOPIC	✅
MODE (i, t, k, o, l)	✅
File transfer	⭐ Bonus
Bot	⭐ Bonus

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Resources

C++ Architecture

• Design Patterns

IRC Protocol

• RFC 1459 — Internet Relay Chat Protocol
• Modern IRC documentation

Networking (C++)

• epoll() man page
• socket() man page
• listen() man page
• bind() man page

AI Usage

• Assistance on our workflow (review of our Issues/PR syntax).
• Documentation about IRC server behavior.