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crier

IMPORTANT NOTE:

This was not supposed to evolve into the next official IRC protocol implementation or anything like that. This was meant to be a fun way for me to learn erlang, and truth be told, it was quite fun.

Though, as it was my first interaction with IRC (except for usage), the code in here is an unholy mashup of anti-patterns in erlang. Worst case example; if you spam for 2 seconds, every message will be delayed by about 2 seconds from the previous one. Kind of like the anti-spam on the freenode network, except theirs is intentional.

Feel free to do whatever you want with this code, as I probably won't be maintaining it after it works.

END IMPORTANT NOTE

How this should have been done

  • Have two different state managers for users and channels
  • Don't throw all commands at one synchronous process, this is what created the enormous bottleneck we have now
  • Keep as much as you can asynchronous, as this will spawn another process that doesn't lock up the process
    • Make almost all IRC commands run asynchronously on the server; there is no reason for us to wait for a confirmation as to whether the message was sent or not. We can let the client handle this
  • Rely more on the client for state management
  • Pay more attention to data structure to avoid passing the entire state around to sync. processes

A partial implementation of the IRC protocol.

This is not meant to be used in production, but a project for me to learn more about concurrency and the IRC protocol.

Usage

$ rebar3 release
$ ./_build/default/rel/crier/bin/crier <start|foreground>

Notes

This will run the IRC server on localhost/5000 (IRC format, localhost:5000).

Implementation status can partially be found in the TODO.org file, a more detailed list will be added to this file later.

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Partial erlang implementation of the IRC protocol

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