Created
March 10, 2014 23:03
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fortune server in haskell
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| import Control.Concurrent (forkIO) | |
| import Control.Monad (forever) | |
| import Network | |
| import System.IO | |
| import System.Random | |
| rand :: Int -> IO Int | |
| rand p = getStdRandom (randomR (0, p)) | |
| fortune :: [String] -> (Handle, HostName, PortNumber) -> IO () | |
| fortune fortunes (rHandle, rHostname, rPort) = do | |
| fortuneIndex <- rand (length fortunes - 1) | |
| hPutStrLn rHandle (fortunes !! fortuneIndex) | |
| hClose rHandle | |
| main = do | |
| fortuneFile <- readFile "fortune.txt" | |
| listener <- listenOn (PortNumber 12345) | |
| forever $ do | |
| (rHandle, rHostname, rPort) <- accept listener | |
| forkIO (fortune (lines fortuneFile) (rHandle, rHostname, rPort)) |
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