content: from __future__ import annotations
  
  import warnings
  
  from .datastructures import Headers, MultipleValuesError  # noqa: F401
  
  
  with warnings.catch_warnings():
      # Suppress redundant DeprecationWarning raised by websockets.legacy.
      warnings.filterwarnings("ignore", category=DeprecationWarning)
      from .legacy.http import read_request, read_response  # noqa: F401
  
  
  warnings.warn(  # deprecated in 9.0 - 2021-09-01
      "Headers and MultipleValuesError were moved "
      "from websockets.http to websockets.datastructures"
      "and read_request and read_response were moved "
      "from websockets.http to websockets.legacy.http",
      DeprecationWarning,
  )
  