yesod/yesod-websockets/README.md

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## REQUIRED PACKAGES
The example, chat.hs, requires `stm-lifted` and `conduit-combinators`
which are not dependencies of `yesod-websockets`. Installing the extra
packages needed for the chat.hs example can be installed with the
command:
$ cabal install stm-lifted conduit-combinators
## TIMEOUTS
Versions of `yesod-websockets` prior to 0.2.1 may experience session
timeouts after about 30 seconds of inactivity. Refer to the patch in
the `websockets` library which addresses this issue:
https://github.com/jaspervdj/websockets/commit/536849d1f3265076f61edefd5c89e84e82a99c71