Server-sent events support for Yesod apps.

Version on this page:1.6.0
LTS Haskell 22.29:
Stackage Nightly 2024-07-19:
Latest on Hackage:

See all snapshots yesod-eventsource appears in

MIT licensed and maintained by Felipe Lessa
This version can be pinned in stack with:yesod-eventsource-1.6.0@sha256:1fd621eaee500945676d4ec16f587f71d6b578c1827c526d7e48a46227ab95c1,1094

Module documentation for 1.6.0


It’s easy to send an event from an HTTP client to a server: just send an HTTP request. However, sending events from the server to the client requires more sophisticated approaches. Server-sent events are a standardized way of pushing events from the server to the client.

This package allows your Yesod application to easily send server-sent events. On the client side, you may use the EventSource JavaScript object on browsers that support it ( or a polyfill for browsers that don’t (we support Remy’s polyfill out-of-the-box, although that requires you to explicitly support it).



  • Upgrade to yesod-core 1.6.0


  • Fix warnings