code: def __init__(
      self, stream, address, protocol, trusted_downstream=None
  ):
      self.address = address
      # Save the socket's address family now so we know how to
      # interpret self.address even after the stream is closed
      # and its socket attribute replaced with None.
      if stream.socket is not None:
          self.address_family = stream.socket.family
      else:
          self.address_family = None
      # In HTTPServerRequest we want an IP, not a full socket address.
      if (
          self.address_family in (socket.AF_INET, socket.AF_INET6)
          and address is not None
      ):
          self.remote_ip = address[0]
      else:
          # Unix (or other) socket; fake the remote address.
          self.remote_ip = "0.0.0.0"
      if protocol:
          self.protocol = protocol
      elif isinstance(stream, iostream.SSLIOStream):
          self.protocol = "https"
      else:
          self.protocol = "http"
      self._orig_remote_ip = self.remote_ip
      self._orig_protocol = self.protocol
      self.trusted_downstream = set(trusted_downstream or [])
  
imports: from __future__ import absolute_import, division, print_function
  import socket
  from tornado.escape import native_str
  from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
  from tornado import gen
  from tornado import httputil
  from tornado import iostream
  from tornado import netutil
  from tornado.tcpserver import TCPServer
  from tornado.util import Configurable
label_desc: Use image node_id 1 to create a new _HTTPRequestContext object from inherited base classes: object with example: obj = _HTTPRequestContext(stream, address, protocol, trusted_downstream)