... and it works!

hbs2-core/hbs2-core.cabal

@@ -109,6 +109,7 @@ library
                      , stm
                      , stm-chans
                      , text
+                     , transformers
                      , uniplate
 
     hs-source-dirs:   lib

hbs2-core/lib/HBS2/Net/Peer.hs

@@ -3,25 +3,33 @@
 module HBS2.Net.Peer where
 
 import HBS2.Prelude
+import HBS2.Prelude.Plated
 import HBS2.Net.Proto
 import HBS2.Net.Messaging
+import HBS2.Clock
 
 import Lens.Micro.Platform
 import Data.ByteString.Lazy ( ByteString )
 import Data.Foldable
 import Control.Monad.Reader
 import Data.Map qualified as Map
-import Data.Proxy
 import GHC.TypeLits
-import Codec.Serialise qualified as S
+import Control.Monad.Trans.Maybe
+
+import Codec.Serialise hiding (encode,decode)
 
 data AnyMessage e = AnyMessage Integer (Encoded e)
+                    deriving stock (Generic)
 
-data EngineEnv e = forall bus . (Messaging bus e (AnyMessage e))  =>
+instance Serialise (Encoded e) => Serialise (AnyMessage e)
+
+data EngineEnv e = forall bus . ( Messaging bus e ByteString
+                                , Serialise (Encoded e)
+                                )  =>
   EngineEnv
   { _peer   :: Maybe (Peer e)
   , _self   :: Peer e
-  , bus    :: bus
+  , bus     :: bus
   }
 
 makeLenses 'EngineEnv
@@ -66,7 +74,8 @@ instance (MonadIO m, HasProtocol e p) => Request e p (EngineM e m) where
     let proto = protoId @e @p (Proxy @p)
     ask >>= \case
       EngineEnv { _self = s, bus = b} -> do
-        liftIO $ sendTo b (To p) (From s) (AnyMessage proto (encode msg))
+        let bs = serialise (AnyMessage @e proto (encode msg))
+        liftIO $ sendTo b (To p) (From s) bs
 
 instance (MonadIO m, HasProtocol e p) => Response e p (EngineM e m) where
   response resp = do
@@ -77,12 +86,14 @@ instance (MonadIO m, HasProtocol e p) => Response e p (EngineM e m) where
                  , _self = s
                  , bus = b
                  } ) -> do
-                  liftIO $ sendTo b (To p) (From s) (AnyMessage proto (encode resp))
+                  let bs = serialise (AnyMessage @e proto (encode resp))
+                  liftIO $ sendTo b (To p) (From s) bs
       _ -> pure ()
 
 
 newEnv :: forall e bus m . ( Monad m
-                           , Messaging bus e (AnyMessage e)
+                           , Messaging bus e ByteString
+                           , Serialise (Encoded e)
                            )
        => Peer e
        -> bus
@@ -91,7 +102,12 @@ newEnv :: forall e bus m . ( Monad m
 newEnv p pipe = pure $ EngineEnv Nothing p pipe
 
 
-runPeer :: MonadIO m => EngineEnv e -> [AnyProtocol e (EngineM e m)] -> m a
+runPeer :: forall e m a . ( MonadIO m
+                          )
+        => EngineEnv e
+        -> [AnyProtocol e (EngineM e m)]
+        -> m a
+
 runPeer env@(EngineEnv {bus = pipe}) hh = do
 
   let me = env ^. self
@@ -105,12 +121,20 @@ runPeer env@(EngineEnv {bus = pipe}) hh = do
     forever $ do
       messages <- receive pipe (To me)
 
-      for_ messages $ \(From pip, AnyMessage n msg) -> local (set peer (Just pip))  do
+      for_ messages $ \(From pip, bs) -> do
 
-        case Map.lookup n disp of
-          Nothing -> pure ()
+        case deserialiseOrFail @(AnyMessage e) bs of
 
-          Just (AnyProtocol { protoDecode = decoder
-                            , handle = h
-                            }) -> maybe (pure ()) h (decoder msg)
+          Left _-> pure () -- liftIO $ print "failed to deserialise"
+
+          Right (AnyMessage n msg) -> do
+
+            local (set peer (Just pip))  do
+
+              case Map.lookup n disp of
+                Nothing -> pure ()
+
+                Just (AnyProtocol { protoDecode = decoder
+                                  , handle = h
+                                  }) -> maybe (pure ()) h (decoder msg)
 

hbs2-core/test/TestUniqProtoId.hs

@@ -34,7 +34,6 @@ instance HasProtocol Fake (PeekPoke Fake) where
   decode = readMay
   encode = show
 
-
 pingPongHandler :: forall e m  . ( MonadIO m
                                  , Response e (PingPong e) m
                                  , HasProtocol e (PingPong e)
@@ -90,6 +89,8 @@ testUniqProtoId = do
       , makeResponse peekPokeHandler
       ]
 
-  void $ waitAnyCatchCancel [pip1, pip2]
+  (_, e) <- waitAnyCatchCancel [pip1, pip2]
+
+  print e