[Haskell-cafe] A simple telnet client using Conduit

[Erik de Castro Lopo]

A new solution that drops two 'runResourceT' calls:


telnet :: String -> Int -> IO ()
telnet host port = runResourceT $ do
    (releaseSock, hsock) <- with (connectTo host $ PortNumber $ fromIntegral port) hClose
    liftIO $ mapM_ (\h -> hSetBuffering h LineBuffering) [ stdin, stdout, hsock ]
    (releaseThread, _) <- with (forkIO $ runResourceT $ sourceHandle stdin $$ sinkHandle hsock) killThread
    sourceHandle hsock $$ sinkHandle stdout
    release releaseThread
    release releaseSock

Erik
-- 
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Erik de Castro Lopo
http://www.mega-nerd.com/