ircserv's Introduction

ircserv

An IRC (Internet Relay Chat) server in C++ 98.

Execution order:

./ircserv <port> <password>

port: the port on which the IRC server will be listening to for incoming IRC connections.
password: the connection password, any IRC client should have one in order to connect to the server.

Develop an IRC server in c++ 98.
Handle multiple clients at the same time.
Use only 1 poll() (or equivalent) for handling all these operations (read, write, listen, and so forth).
Choosing and IRC client as reference.
Connecting te client with the server without encountering any error.
Implement communication between client and server via TCP/IP (v4 or v6).
The client must be able to connect to the server just like any other official IRC server.
Implement the following features:
- Authentication, nickname, username.
- Joining a channel, send and recieve private message using the client.
- Forwarding all the messages sent from one client to everyone else that joined the channel.
- Implement operators and regular users.
- Implement the commands that are specific to operators.

Since MacOS doesn't implement write() the same way as other Unix OSes, the fcntl() should be used.
The implementation of fcntl should be like fcntl(fd, F_SETFL, O_NONBLOCK), any other flag is forbidden.

Verify absolutely every possible error and issue (recieving partial data, low bandwidth, and so forth).
To ensure that the server correctly processes everything that we send to it, the following test could be used.

$ nc 127.0.0.1 <port>
com^Dman^Dd
$

Use ctrl+D to send the command in several parts: 'com', then 'man', then 'd\n'.
In order to process a command, aggregate (COLLECT) the received packets in order to rebuild it.