Function sender

starlette/_exception_handler.py:34–39

(message: Message)

        response_started = False

        async def sender(message: Message) -> None:
            nonlocal response_started

            if message[class="st">"type"] == class="st">"http.response.start":
                response_started = True
            await send(message)

        try:
            await app(scope, receive, sender)