RosettaCodeData/Task/Hello-world-Web-server/Haskell/hello-world-web-server-3.hs

21 lines
535 B
Haskell

{-# LANGUAGE OverloadedStrings #-}
import Network.Wai
import Network.Wai.Handler.Warp
import Network.HTTP.Types (status200)
import Blaze.ByteString.Builder (copyByteString)
import qualified Data.ByteString.UTF8 as BU
import Data.Monoid
main = do
let port = 8080
putStrLn $ "Listening on port " ++ show port
run port app
app req respond = respond $
case pathInfo req of
x -> index x
index x = responseBuilder status200 [("Content-Type", "text/plain")] $ mconcat $ map copyByteString
[ "Hello World!\n" ]