Fix:

Force context switch before canceling swarm connection tasks

libp2p/network/connection/swarm_connection.py

@@ -43,6 +43,9 @@ class SwarmConn(INetConn):
         # We *could* optimize this but it really isn't worth it.
         for stream in self.streams:
             await stream.reset()
+        # Force context switch for stream handlers to process the stream reset event we just emit
+        # before we cancel the stream handler tasks.
+        await asyncio.sleep(0.1)
 
         for task in self._tasks:
             task.cancel()