Header faststream.asgi.Header # Header(real_name='', *, cast=False, default=EMPTY) Source code in faststream/asgi/params.py 7 8 9 10 11 12 13 14 15 16 17 18def Header( # noqa: N802 real_name: str = "", *, cast: bool = False, default: Any = EMPTY, ) -> Any: return Context_( real_name=real_name.lower(), cast=cast, default=default, prefix="request.headers.", )