diff --git a/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs b/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
index 1cfb5107..4bcdd8b9 100644
--- a/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
+++ b/hbs2-core/lib/HBS2/Net/Messaging/UDP.hs
@@ -1,35 +1,28 @@
 {-# Language UndecidableInstances #-}
+{-# Language RecordWildCards #-}
 module HBS2.Net.Messaging.UDP where
 
-import HBS2.Clock
+import HBS2.Prelude
+import HBS2.OrDie
 import HBS2.Defaults
 import HBS2.Net.IP.Addr
 import HBS2.Net.Messaging
--- import HBS2.Net.Proto
-import HBS2.Prelude.Plated
-
--- import HBS2.System.Logger.Simple
 
 import Data.Function
-import Control.Exception
 import Control.Monad.Trans.Maybe
-import Control.Concurrent.Async
-import Control.Concurrent.STM
+import Control.Monad.Trans.Cont
 import Control.Concurrent.STM.TQueue qualified as Q0
-import Control.Monad
 import Data.ByteString.Lazy (ByteString)
 import Data.ByteString.Lazy qualified  as LBS
 import Data.List qualified as L
 import Data.Maybe
--- import Data.Text (Text)
 import Data.Text qualified as Text
 import Lens.Micro.Platform
 import Network.Socket
 import Network.Socket.ByteString
 import Network.Multicast
 
-import Control.Monad.Trans.Resource
-
+import UnliftIO
 
 -- One address - one peer - one messaging
 data MessagingUDP =
@@ -37,64 +30,57 @@ data MessagingUDP =
   { listenAddr :: SockAddr
   , sink       :: TQueue (From L4Proto, ByteString)
   , inbox      :: TQueue (To L4Proto, ByteString)
-  , sock       :: TVar Socket
+  , sock       :: TVar (Maybe Socket)
   , mcast      :: Bool
   }
 
-
 getOwnPeer :: MessagingUDP -> Peer L4Proto
 getOwnPeer mess = PeerL4 UDP (listenAddr mess)
 
-newMessagingUDPMulticast :: MonadResource m => String -> m (Maybe MessagingUDP)
+newMessagingUDPMulticast :: MonadUnliftIO m => String -> m (Maybe MessagingUDP)
 newMessagingUDPMulticast s = runMaybeT $ do
 
   (host, port)  <- MaybeT $ pure $ getHostPort (Text.pack s)
 
   so <- liftIO $ multicastReceiver host port
 
-  _ <- register $ close so
-
   liftIO $ setSocketOption so ReuseAddr 1
 
   a <- liftIO $ getSocketName so
 
   liftIO $ MessagingUDP a <$> Q0.newTQueueIO
                           <*> Q0.newTQueueIO
-                          <*> newTVarIO so
+                          <*> newTVarIO (Just so)
                           <*> pure True
 
+isUDPSocketClosed :: MonadUnliftIO m => MessagingUDP -> m Bool
+isUDPSocketClosed MessagingUDP{..} = readTVarIO sock <&> isNothing
 
-newMessagingUDP :: (MonadIO m, MonadResource m) => Bool -> Maybe String -> m (Maybe MessagingUDP)
+newMessagingUDP :: (MonadUnliftIO m) => Bool -> Maybe String -> m (Maybe MessagingUDP)
 newMessagingUDP reuse saddr =
   case saddr of
     Just s -> do
-
       runMaybeT $ do
         l  <- MaybeT $ liftIO $ parseAddrUDP (Text.pack s) <&> listToMaybe . sorted
         let a = addrAddress l
         so <- liftIO $ socket (addrFamily l) (addrSocketType l) (addrProtocol l)
 
-        _ <- register $ close so
-
         when reuse $ do
           liftIO $ setSocketOption so ReuseAddr 1
 
         liftIO $ MessagingUDP a <$> Q0.newTQueueIO
                                 <*> Q0.newTQueueIO
-                                <*> newTVarIO so
+                                <*> newTVarIO (Just so)
                                 <*> pure False
 
 
     Nothing -> do
         so <- liftIO $ socket AF_INET Datagram defaultProtocol
-
-        _ <- register $ close so
-
         sa <- liftIO $ getSocketName so
 
         liftIO $ Just <$> ( MessagingUDP sa <$> Q0.newTQueueIO
                                             <*> Q0.newTQueueIO
-                                            <*> newTVarIO so
+                                            <*> newTVarIO (Just so)
                                             <*> pure False
                           )
 
@@ -106,24 +92,27 @@ newMessagingUDP reuse saddr =
       SockAddrUnix{}  -> 2
 
 
-udpWorker :: MessagingUDP -> TVar Socket -> IO ()
-udpWorker env tso = do
-  so <- readTVarIO tso
-  forever $ do
-    (msg, from) <- recvFrom so defMaxDatagram
-    liftIO $ atomically $ Q0.writeTQueue (sink env) (From (PeerL4 UDP from), LBS.fromStrict msg)
-
 -- FIXME: stopping
 
-runMessagingUDP :: MonadIO m => MessagingUDP -> m ()
-runMessagingUDP udpMess = liftIO $ do
-  let addr = listenAddr udpMess
-  so <- readTVarIO (sock udpMess)
+runMessagingUDP :: MonadUnliftIO m => MessagingUDP -> m ()
+runMessagingUDP MessagingUDP{..} =  void $ flip runContT pure do
 
-  unless (mcast udpMess) $ do
-    bind so addr
+  let addr = listenAddr
+  so <- liftIO (readTVarIO sock) >>= orThrowUser "UDP socket is not ready"
+
+  void $ ContT $ bracket (pure (Just so)) $ \case
+            Just so -> liftIO (close so >> atomically (writeTVar sock Nothing))
+            Nothing -> pure ()
+
+  unless mcast $ do
+    liftIO $ bind so addr
+
+  w <- ContT $ withAsync do
+        forever $ liftIO do
+          (msg, from) <- recvFrom so defMaxDatagram
+          liftIO $ atomically $
+            Q0.writeTQueue sink (From (PeerL4 UDP from), LBS.fromStrict msg)
 
-  w <- async $ udpWorker udpMess (sock udpMess)
   link w
 
   waitCatch w >>= either throwIO (const $ pure ())
@@ -132,8 +121,9 @@ instance Messaging MessagingUDP L4Proto ByteString where
 
   sendTo bus (To whom) _ msg = liftIO do
     -- atomically $ Q0.writeTQueue (inbox bus) (To whom, msg)
-    so <- readTVarIO (sock bus)
-    sendAllTo so (LBS.toStrict msg) (view sockAddr whom)
+    mso <- readTVarIO (sock bus)
+    for_ mso $ \so -> do
+      sendAllTo so (LBS.toStrict msg) (view sockAddr whom)
 
   receive bus _ = liftIO do
     -- so <- readTVarIO (sock bus)
diff --git a/hbs2-peer/app/PeerMain.hs b/hbs2-peer/app/PeerMain.hs
index 801acbc7..6b12d0ff 100644
--- a/hbs2-peer/app/PeerMain.hs
+++ b/hbs2-peer/app/PeerMain.hs
@@ -122,11 +122,11 @@ import System.Metrics
 import System.Posix.Process
 import Control.Monad.Trans.Cont
 
+import UnliftIO (MonadUnliftIO(..))
 import UnliftIO.Exception qualified as U
 -- import UnliftIO.STM
 import UnliftIO.Async
 
-import Control.Monad.Trans.Resource
 import Streaming.Prelude qualified as S
 
 import Graphics.Vty qualified as Vty
@@ -713,7 +713,7 @@ runPeer :: forall e s . ( e ~ L4Proto
                         , HasStorage (PeerM e IO)
                         )=> PeerOpts -> IO ()
 
-runPeer opts = respawnOnError opts $ runResourceT do
+runPeer opts = respawnOnError opts $ do
 
   probes <- liftIO $ newTVarIO (mempty :: [AnyProbe])
 
@@ -842,7 +842,7 @@ runPeer opts = respawnOnError opts $ runResourceT do
 
   udpPoint <- runMaybeT do
                 sa <- toMPlus listenSa
-                env <- toMPlus =<< newMessagingUDP False (Just sa)
+                env <- toMPlus =<< liftIO (newMessagingUDP False (Just sa))
 
                 void $ liftIO ( async do
                                   runMessagingUDP env
@@ -1328,8 +1328,8 @@ runPeer opts = respawnOnError opts $ runResourceT do
   rpcProto <- async $ flip runReaderT rpcctx do
     env <- newNotifyEnvServer @(RefChanEvents L4Proto) refChanNotifySource
     envrl <- newNotifyEnvServer @(RefLogEvents L4Proto) refLogNotifySource
-    w1 <- async $ runNotifyWorkerServer env
-    w2 <- async $ runNotifyWorkerServer envrl
+    w1 <- asyncLinked $ runNotifyWorkerServer env
+    w2 <- asyncLinked $ runNotifyWorkerServer envrl
     wws <- replicateM 1 $ async $ runProto @UNIX
       [ makeResponse (makeServer @PeerAPI)
       , makeResponse (makeServer @RefLogAPI)
@@ -1358,7 +1358,7 @@ runPeer opts = respawnOnError opts $ runResourceT do
   pause @'Seconds 1
 
   -- we want to clean up all resources
-  throwM GoAgainException
+  throwIO GoAgainException
 
 emitToPeer :: ( MonadIO m
               , EventEmitter e a (PeerM e IO)
diff --git a/hbs2-tests/test/TestUDP.hs b/hbs2-tests/test/TestUDP.hs
index f11209b2..7608e895 100644
--- a/hbs2-tests/test/TestUDP.hs
+++ b/hbs2-tests/test/TestUDP.hs
@@ -5,26 +5,29 @@ import HBS2.Prelude.Plated
 import HBS2.Net.Proto
 import HBS2.Net.Messaging.UDP
 import HBS2.Actors.Peer
+import HBS2.Misc.PrettyStuff
 import HBS2.OrDie
 
 import Control.Monad.Reader
+import Control.Monad.Trans.Cont
+import Control.Concurrent.STM (retry)
 import Data.ByteString.Lazy (ByteString)
 import Prettyprinter
-import System.IO
+import System.IO (hPrint)
 import Lens.Micro.Platform
 
 import Codec.Serialise
 -- import Control.Concurrent.Async
 
-import Control.Monad.Trans.Resource
+import UnliftIO
 import UnliftIO.Async
+import UnliftIO.STM
 
 type UDP = L4Proto
 
 debug :: (MonadIO m) => Doc ann -> m ()
 debug p = liftIO $ hPrint stderr p
 
-
 data PingPong e = Ping Int
                 | Pong Int
                 deriving stock (Eq,Generic,Show,Read)
@@ -43,15 +46,20 @@ pingPongHandler :: forall e m  . ( MonadIO m
                                  , Response e (PingPong e) m
                                  , HasProtocol e (PingPong e)
                                  )
-                => Int
+                => TVar Int
+                -> Int
                 -> PingPong e
                 -> m ()
 
-pingPongHandler n = \case
+pingPongHandler tv n = \case
 
     Ping c -> debug ("Ping" <+> pretty c) >> response (Pong @e c)
 
-    Pong c | c < n -> debug ("Pong" <+> pretty c) >> response (Ping @e (succ c))
+    Pong c | c < n -> do
+      debug ("Pong" <+> pretty c)
+      liftIO $ atomically $ writeTVar tv c
+      response (Ping @e (succ c))
+
            | otherwise -> pure ()
 
 data PPEnv =
@@ -84,28 +92,58 @@ instance HasTimeLimits UDP (PingPong UDP) IO where
   tryLockForPeriod _ _ = pure True
 
 main :: IO ()
-main = runResourceT do
+main = do
   liftIO $ hSetBuffering stdout LineBuffering
   liftIO $ hSetBuffering stderr LineBuffering
 
-  udp1 <- newMessagingUDP False (Just "127.0.0.1:10001") `orDie` "Can't start listener on 10001"
-  udp2 <- newMessagingUDP False (Just "127.0.0.1:10002") `orDie` "Can't start listener on 10002"
+  let tries = 1000
 
-  m1 <- async $ runMessagingUDP udp1
-  m2 <- async $ runMessagingUDP udp2
+  replicateM_ 10 do
 
-  p1 <- async $ runPingPong udp1 do
-                  request (getOwnPeer udp2) (Ping @UDP 0)
-                  runProto @UDP
-                    [ makeResponse (pingPongHandler 3)
-                    ]
+    udp1 <- newMessagingUDP False (Just "127.0.0.1:10001") `orDie` "Can't start listener on 10001"
+    udp2 <- newMessagingUDP False (Just "127.0.0.1:10002") `orDie` "Can't start listener on 10002"
 
-  p2 <- async $ runPingPong udp2 do
-                  -- request (getOwnPeer udp1) (Ping @UDP 0)
-                  runProto @UDP
-                    [ makeResponse (pingPongHandler 3)
-                    ]
+    void $ flip runContT pure do
 
-  mapM_ wait [p1,p2,m1,m2]
+      m1 <- ContT $ withAsync $ runMessagingUDP udp1
+      m2 <- ContT $ withAsync $ runMessagingUDP udp2
+
+      tping1 <- newTVarIO 0
+      tping2 <- newTVarIO 0
+
+      pause @'Seconds 0.01
+
+      p1 <- ContT $ withAsync $ runPingPong udp1 do
+                      request (getOwnPeer udp2) (Ping @UDP 0)
+                      runProto @UDP
+                        [ makeResponse (pingPongHandler tping1 tries)
+                        ]
+
+      p2 <- ContT $ withAsync $ runPingPong udp2 do
+                      -- request (getOwnPeer udp1) (Ping @UDP 0)
+                      runProto @UDP
+                        [ makeResponse (pingPongHandler tping2 tries)
+                        ]
+
+      r <- liftIO $ race (pause @'Seconds 2) do
+        atomically do
+          r1 <- readTVar tping1
+          r2 <- readTVar tping2
+          if (max r1 r2) >= (tries-1) then pure () else retry
+
+      let done = either (const "fail") (const "okay") r
+
+      v1 <- readTVarIO tping1
+      v2 <- readTVarIO tping2
+
+      liftIO $ hPrint stdout $ pretty "finished" <+> pretty done <+> pretty (max v1 v2)
+
+      mapM_ cancel [m1,m2,p1,p2]
+
+      c1 <- liftIO $ isUDPSocketClosed udp1
+      c2 <- liftIO $ isUDPSocketClosed udp2
+
+      liftIO $ hPrint stdout $ pretty "socket1 closed" <+> pretty c1
+      liftIO $ hPrint stdout $ pretty "socket2 closed" <+> pretty c2
 
 
diff --git a/test/RT/test-udp-messaging-1.baseline b/test/RT/test-udp-messaging-1.baseline
new file mode 100644
index 00000000..ee21c982
--- /dev/null
+++ b/test/RT/test-udp-messaging-1.baseline
@@ -0,0 +1,31 @@
+(root
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True)
+ (finished okay 999)
+ (socket1 closed True)
+ (socket2 closed True))
\ No newline at end of file