fix h11 LocalProtocolError on connection close by client

alexrashed · alexrashed · commit 6393a0aa32e7 · 2023-09-20T15:53:32.000+02:00
diff --git a/localstack/http/asgi.py b/localstack/http/asgi.py
@@ -296,6 +296,8 @@ async def write(self, data: bytes) -> None:
         if not self.started:
             raise ValueError("not started the response yet")
         if getattr(self.send.__self__, "closed", None):
+            # the connection has been closed from the client side, set finalized=True to avoid sending more responses
+            self.finalized = True
             raise BrokenPipeError("Connection closed")
         await self.send({"type": "http.response.body", "body": data, "more_body": True})
         self.sent += len(data)
