From a03a457538dd990db34c71facd92ea3173ff6025 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Tue, 15 Jul 2025 21:28:30 +0200
Subject: Test output stream opening and closing

---
 src/Erebos/Network/Protocol.hs | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

(limited to 'src/Erebos/Network/Protocol.hs')

diff --git a/src/Erebos/Network/Protocol.hs b/src/Erebos/Network/Protocol.hs
index bd640ac..f67e296 100644
--- a/src/Erebos/Network/Protocol.hs
+++ b/src/Erebos/Network/Protocol.hs
@@ -250,6 +250,12 @@ instance Eq (Connection addr) where
 connAddress :: Connection addr -> addr
 connAddress = cAddress
 
+showConnAddress :: forall addr. Connection addr -> String
+showConnAddress Connection {..} = helper cGlobalState cAddress
+  where
+    helper :: GlobalState addr -> addr -> String
+    helper GlobalState {} = show
+
 connData :: Connection addr -> Flow
     (Maybe (Bool, TransportPacket PartialObject))
     (SecurityRequirement, TransportPacket Ref, [TransportHeaderItem])
@@ -274,6 +280,7 @@ connClose conn@Connection {..} = do
 
 connAddWriteStream :: Connection addr -> STM (Either String (TransportHeaderItem, RawStreamWriter, IO ()))
 connAddWriteStream conn@Connection {..} = do
+    let GlobalState {..} = cGlobalState
     outStreams <- readTVar cOutStreams
     let doInsert :: Word8 -> [(Word8, Stream)] -> ExceptT String STM ((Word8, Stream), [(Word8, Stream)])
         doInsert n (s@(n', _) : rest) | n == n' =
@@ -290,14 +297,16 @@ connAddWriteStream conn@Connection {..} = do
     runExceptT $ do
         ((streamNumber, stream), outStreams') <- doInsert 1 outStreams
         lift $ writeTVar cOutStreams outStreams'
+        lift $ gTestLog $ "net-ostream-open " <> showConnAddress conn <> " " <> show streamNumber <> " " <> show (length outStreams')
         return
             ( StreamOpen streamNumber
             , RawStreamWriter (fromIntegral streamNumber) (sFlowIn stream)
-            , go cGlobalState streamNumber stream
+            , go streamNumber stream
             )
 
   where
-    go gs@GlobalState {..} streamNumber stream = do
+    go streamNumber stream = do
+            let GlobalState {..} = cGlobalState
             (reserved, msg) <- atomically $ do
                 readTVar (sState stream) >>= \case
                     StreamRunning -> return ()
@@ -309,6 +318,8 @@ connAddWriteStream conn@Connection {..} = do
                 StreamData {..} -> do
                     return (stpData, True, return ())
                 StreamClosed {} -> do
+                    atomically $ do
+                        gTestLog $ "net-ostream-close-send " <> showConnAddress conn <> " " <> show streamNumber
                     atomically $ do
                         -- wait for ack on all sent stream data
                         waits <- readTVar (sWaitingForAck stream)
@@ -353,7 +364,7 @@ connAddWriteStream conn@Connection {..} = do
                     sendBytes conn mbReserved' bs
                 Nothing -> return ()
 
-            when cont $ go gs streamNumber stream
+            when cont $ go streamNumber stream
 
 connAddReadStream :: Connection addr -> Word8 -> STM RawStreamReader
 connAddReadStream Connection {..} streamNumber = do
@@ -412,8 +423,10 @@ streamAccepted Connection {..} snum = atomically $ do
         Nothing -> return ()
 
 streamClosed :: Connection addr -> Word8 -> IO ()
-streamClosed Connection {..} snum = atomically $ do
-    modifyTVar' cOutStreams $ filter ((snum /=) . fst)
+streamClosed conn@Connection {..} snum = atomically $ do
+    streams <- filter ((snum /=) . fst) <$> readTVar cOutStreams
+    writeTVar cOutStreams streams
+    gTestLog cGlobalState $ "net-ostream-close-ack " <> showConnAddress conn <> " " <> show snum <> " " <> show (length streams)
 
 readStreamToList :: RawStreamReader -> IO (Word64, [(Word64, BC.ByteString)])
 readStreamToList stream = readFlowIO (rsrFlow stream) >>= \case
@@ -563,6 +576,7 @@ newConnection cGlobalState@GlobalState {..} addr = do
     cOutStreams <- newTVar []
     let conn = Connection {..}
 
+    gTestLog $ "net-conn-new " <> show cAddress
     writeTVar gConnections (conn : conns)
     return conn
 
-- 
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