network handle failure

gistfile1.hs

module Main where

import Network.Socket
import Network.BSD
import System.IO
import Control.Concurrent
import Control.Monad
import qualified Data.ByteString.Char8 as B

main :: IO ()
main = do
    tcp <- getProtocolNumber "tcp"
    sock <- socket AF_INET Stream tcp
    setSocketOption sock ReuseAddr 1
    bindSocket sock (SockAddrInet 1234 iNADDR_ANY)
    listen sock 8
    
    forkIO $ do
        (sock', _) <- accept sock
        hand <- socketToHandle sock' ReadWriteMode  
        B.hPutStr hand $ B.pack $ concat $ replicate 8096 "A" -- works fine if less than 8096
        hClose hand
    
    clientSock <- socket AF_INET Stream tcp
    addr <- inet_addr "127.0.0.1"
    connect clientSock (SockAddrInet 1234 addr)
    
    return ()