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{-# LANGUAGE OverloadedStrings #-} | |
import Control.Concurrent (forkIO) | |
import Control.Monad (forever, unless) | |
import qualified Data.ByteString.Lazy as BL | |
import Network.Connection | |
import qualified Network.WebSockets as WS | |
import qualified Network.WebSockets.Stream as WS | |
import Data.Text (Text) | |
import qualified Data.Text as T | |
import qualified Data.Text.IO as T | |
import Data.Maybe (maybe) | |
app :: WS.ClientApp () | |
app conn = do | |
putStrLn "Connected!" | |
_ <- forkIO $ forever $ do | |
msg <- WS.receiveData conn | |
T.putStrLn msg | |
let loop = do | |
line <- T.getLine | |
unless (T.null line) $ WS.sendTextData conn line >> loop | |
loop | |
WS.sendClose conn ("Bye!" :: Text) | |
main :: IO () | |
main = do | |
ctx <- initConnectionContext | |
con <- connectTo ctx $ ConnectionParams | |
{ connectionHostname = hostname | |
, connectionPort = port | |
, connectionUseSecure = | |
Just $ TLSSettingsSimple | |
{ settingDisableCertificateValidation = True | |
, settingDisableSession = False | |
, settingUseServerName = False | |
} | |
, connectionUseSocks = Nothing | |
} | |
stream <- WS.makeStream (fmap Just $ connectionGetChunk con) | |
(maybe (return ()) (connectionPut con . BL.toStrict)) | |
WS.runClientWithStream stream hostname path WS.defaultConnectionOptions [] app | |
where | |
hostname = "echo.websocket.org" | |
port = 443 | |
path = "/" |
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