1 files changed, 62 insertions, 0 deletions

diff --git a/bittorrent/src/Network/BitTorrent/Exchange/Manager.hs b/bittorrent/src/Network/BitTorrent/Exchange/Manager.hs
new file mode 100644
index 00000000..30a6a607
--- /dev/null
+++ b/bittorrent/src/Network/BitTorrent/Exchange/Manager.hs
@@ -0,0 +1,62 @@
+module Network.BitTorrent.Exchange.Manager
+       ( Options (..)
+       , Manager
+       , Handler
+       , newManager
+       , closeManager
+       ) where
+
+import Control.Concurrent
+import Control.Exception hiding (Handler)
+import Control.Monad
+import Data.Default
+import Network.Socket
+
+import Data.Torrent
+import Network.Address
+import Network.BitTorrent.Exchange.Connection hiding (Options)
+import Network.BitTorrent.Exchange.Session
+
+
+data Options = Options
+  { optBacklog  :: Int
+  , optPeerAddr :: PeerAddr IP
+  } deriving (Show, Eq)
+
+instance Default Options where
+  def = Options
+    { optBacklog  = maxListenQueue
+    , optPeerAddr = def
+    }
+
+data Manager = Manager
+  { listener :: !ThreadId
+  }
+
+type Handler = InfoHash -> IO Session
+
+handleNewConn :: Socket -> PeerAddr IP -> Handler -> IO ()
+handleNewConn sock addr handler = do
+  conn <- newPendingConnection sock addr
+  ses  <- handler (pendingTopic conn) `onException` closePending conn
+  establish conn ses
+
+listenIncoming :: Options -> Handler -> IO ()
+listenIncoming Options {..} handler = do
+  bracket (socket AF_INET Stream defaultProtocol) close $ \ sock -> do
+    bind sock (toSockAddr optPeerAddr)
+    listen sock optBacklog
+    forever $ do
+      (conn, sockAddr) <- accept sock
+      case fromSockAddr sockAddr of
+        Nothing   -> return ()
+        Just addr -> void $ forkIO $ handleNewConn sock addr handler
+
+newManager :: Options -> Handler -> IO Manager
+newManager opts handler = do
+  tid <- forkIO $ listenIncoming opts handler
+  return (Manager tid)
+
+closeManager :: Manager -> IO ()
+closeManager Manager {..} = do
+  killThread listener
\ No newline at end of file