This project is about creating our own IRC server. We used an actual IRC client to connect to our server and test it. IRC (Internet Relay Chat) is a protocol for real-time text messaging between internet-connected computers created in 1988. It is mainly used for group discussion in chat rooms called “channels” although it supports private messages between two users, data transfer, and various client-side commands.

• We have to develop an IRC server in C++ 98.
• The server must be capable of handling multiple clients at the same time and never hang.
• Only 1 poll() (or equivalent) can be used for handling all these operations (read, write, but also listen, and so forth).
• An IRC client must be able to connect to your server without encountering any error.
• Communication between client and server has to be done via TCP/IP (v4).
• Using the IRC client with our server must be similar to using it with any official IRC server. However, we only have to implement the following features:
  • We must be able to authenticate, set a nickname, a username, join a channel, send and receive private messages using the IRC client.
  • All the messages sent from one client to a channel have to be forwarded to every other client that joined the channel.
  • We must have operators and regular users.
  • Then, we have to implement the commands that are specific to operators.

Here are the extra features we added to our IRC server so it looks even more like and actual IRC server:

• Handle file transfer.
• A meme bot named DEEZNUTS.

These are the available commands in our IRC Server:

• PASS: The PASS command is used to set a 'connection password'.
• NICK: NICK command is used to give user a nickname or change the existing one.
• USER: he USER command is used at the beginning of connection to specify the username, hostname and realname of a new user.
• OPER: A normal user uses the OPER command to obtain operator privileges.
• MODE: The user MODE's are typically changes which affect either how the client is seen by others or what 'extra' messages the client is sent.
• QUIT: A client session is terminated with a quit message.
• JOIN: The JOIN command is used by a user to request to start listening to the specific channel.
• PART: The PART command causes the user sending the message to be removed from the list of active members for all given channels listed in the parameter string.
• TOPIC: The TOPIC command is used to change or view the topic of a channel.
• KICK: The KICK command can be used to request the forced removal of a user from a channel.
• PRIVMSG: PRIVMSG is used to send private messages between users, as well as to send messages to channels.
• NOTICE: The NOTICE command is used similarly to PRIVMSG.
• SENDFILE: The SENDFILE command is used to send a file to another user.
• GETFILE: The GETFILE command is used to receive a file from another user.
• DEEZNUTS: The DEEZNUTS command is a bot that helps you with various types of information about the server.

To compile the program, use:

• make To start the Server, use:
• ./ircserv <port> <password>
  • port: The port number on which your IRC server will be listening to for incoming IRC connections.
  • password: The connection password. It will be needed by any IRC client that tries to connect to your server. To connect to the server, you can use:
• nc <IP ADDRESS> <PORT>
  • IP ADDRESS: Host IP address.
  • PORT: The PORT that the server listening on.
• You can also use an IRC Client e.g LimeChat, WeeChat...

BARI Mehdi
 42intra profile : mbari

SFAIHI Abderrahmane
 42intra profile : asfaihi

EL KEMMAL Abdelhamid
 42intra profile : abdel-ke

• What is a Socket?
• Unix Socket - Network Addresses
• Unix Socket - Core Functions
• Beej's Guide to Network Programming
• The UChicago χ-Projects
• Internet Relay Chat Protocol
• Internet Relay Chat: Architecture
• Internet Relay Chat: Channel Management
• Internet Relay Chat: Client Protocol
• Internet Relay Chat: Server Protocol