diff options
Diffstat (limited to 'P2P/IO.hs')
| -rw-r--r-- | P2P/IO.hs | 40 |
1 files changed, 20 insertions, 20 deletions
@@ -167,7 +167,7 @@ runRelay runner (RelayHandle hout) (RelayHandle hin) = bracket setup cleanup go where setup = do v <- newEmptyMVar - void $ async $ relayFeeder runner v + void $ async $ relayFeeder runner v hin void $ async $ relayReader v hout return v @@ -175,7 +175,7 @@ runRelay runner (RelayHandle hout) (RelayHandle hin) = bracket setup cleanup go hClose hin hClose hout - go v = relayHelper runner v hin + go v = relayHelper runner v runRelayService :: P2PConnection -> RunProto IO -> Service -> IO (Maybe ()) runRelayService conn runner service = bracket setup cleanup go @@ -195,7 +195,7 @@ runRelayService conn runner service = bracket setup cleanup go , std_in = CreatePipe } v <- newEmptyMVar - void $ async $ relayFeeder runner v + void $ async $ relayFeeder runner v hin void $ async $ relayReader v hout waiter <- async $ waitexit v pid return (v, waiter, hin, hout, pid) @@ -206,8 +206,8 @@ runRelayService conn runner service = bracket setup cleanup go cancel waiter void $ waitForProcess pid - go (v, _, hin, _, _) = do - r <- relayHelper runner v hin + go (v, _, _, _, _) = do + r <- relayHelper runner v case r of Nothing -> return Nothing Just exitcode -> runner $ net $ relayToPeer (RelayDone exitcode) @@ -215,16 +215,12 @@ runRelayService conn runner service = bracket setup cleanup go waitexit v pid = putMVar v . RelayDone =<< waitForProcess pid -- Processes RelayData as it is put into the MVar. -relayHelper :: RunProto IO -> MVar RelayData -> Handle -> IO (Maybe ExitCode) -relayHelper runner v hin = loop +relayHelper :: RunProto IO -> MVar RelayData -> IO (Maybe ExitCode) +relayHelper runner v = loop where loop = do d <- takeMVar v case d of - RelayFromPeer b -> do - L.hPut hin b - hFlush hin - loop RelayToPeer b -> do r <- runner $ net $ relayToPeer (RelayToPeer b) case r of @@ -233,21 +229,25 @@ relayHelper runner v hin = loop RelayDone exitcode -> do _ <- runner $ net $ relayToPeer (RelayDone exitcode) return (Just exitcode) + RelayFromPeer _ -> loop -- not handled here --- Takes input from the peer, and puts it into the MVar for processing. +-- Takes input from the peer, and sends it to the relay process's stdin. -- Repeats until the peer tells it it's done or hangs up. -relayFeeder :: RunProto IO -> MVar RelayData -> IO () -relayFeeder runner v = loop +relayFeeder :: RunProto IO -> MVar RelayData -> Handle -> IO () +relayFeeder runner v hin = loop where loop = do mrd <- runner $ net relayFromPeer case mrd of - Nothing -> putMVar v (RelayDone (ExitFailure 1)) - Just rd -> do - putMVar v rd - case rd of - RelayDone _ -> return () - _ -> loop + Nothing -> + putMVar v (RelayDone (ExitFailure 1)) + Just (RelayDone exitcode) -> + putMVar v (RelayDone exitcode) + Just (RelayFromPeer b) -> do + L.hPut hin b + hFlush hin + loop + Just (RelayToPeer _) -> loop -- not handled here -- Reads input from the Handle and puts it into the MVar for relaying to -- the peer. Continues until EOF on the Handle. |