ft_irc

A minimal IRC-like server implementation written in C++, designed to support multiple clients connecting concurrently and communicating through standard IRC commands.

Features

• TCP Socket Server
  • Listens for incoming client connections using non-blocking sockets and the poll() system call.
• Multi-Client Support
  • Handles multiple simultaneous connections without threading, using event-driven I/O.
• Command Parsing
  • Supports a subset of IRC commands such as PASS, NICK, USER, JOIN, PRIVMSG, PAR, KICK, INVITE, and QUIT.
• Channel Management
  • Clients can create and join channels, send private or group messages, and set channel topics.
• User Authentication
  • Implements password protection for server access (defined at startup).
• Graceful Disconnects
  • Properly handles client exits, timeouts, and broken connections.

How It Works

• Initialization
  • The server is launched with a port and password. It initializes a listening socket and enters the main event loop.
• Connection Handling
  • New connections are accepted and registered to a list of file descriptors monitored by poll().
• Command Handling
  • Incoming messages are parsed into commands, and handlers are invoked accordingly.
• Broadcasting
  • Messages are distributed to appropriate recipients based on channel membership or target nicknames.