Ecosystems:
Haskell
WebSockets Server in Haskell
Simple example implementation of websockets server in haskell.
- See
Main.hsfor instructions - Client code already implemeted
- Nix and Stack ready
- Open live app
- Check cheat branch for example implementation
Nix
- you can use
cabalwithinnix-shell - to enable direnv use
echo "use_nix" > .envrc && direnv allow - you can use
nix-buildto build project using nix
Stack
- stack based workflow should be working. use
stack --helpto learn how to use it.
Intro
Today we're building:
- simple steteful websockets based chat room
- no database
- using STM for state
- no wai/warp
- no MTL, tagless final etc. Beginner Haskell
- persistent sessions, multiple connections per session etc.
More resources
- Jasper's own introduction to websockets
- servant-websockets for Servant projects
- wai-websockets for any wai app
- check hackage for more