class_docstr: Implements the HTTP/1.x protocol.
  
  This class can be on its own for clients, or via `HTTP1ServerConnection`
  for servers.
class_docstr_tok: ["Implements","the","HTTP\/1.x","protocol",".","This","class","can","be","on","its","own","for","clients",",","or","via","`","HTTP1ServerConnection","`","for","servers","."]
docstr: Sets a callback that will be run when the connection is closed.
  
  .. deprecated:: 4.0
      Use `.HTTPMessageDelegate.on_connection_close` instead.
docstr_tok: ["Sets","a","callback","that","will","be","run","when","the","connection","is","closed",".","..","deprecated",":",":","4.0","Use","`",".HTTPMessageDelegate.on_connection_close","`","instead","."]
code: def set_close_callback(self, callback):
      """Sets a callback that will be run when the connection is closed.
  
      .. deprecated:: 4.0
          Use `.HTTPMessageDelegate.on_connection_close` instead.
      """
      self._close_callback = stack_context.wrap(callback)
  
imports: from __future__ import absolute_import, division, print_function
  import re
  from tornado.concurrent import Future
  from tornado.escape import native_str, utf8
  from tornado import gen
  from tornado import httputil
  from tornado import iostream
  from tornado.log import gen_log, app_log
  from tornado import stack_context
  from tornado.util import GzipDecompressor, PY3
label_desc: Use image node_id 5 for calling the HTTP1Connection obj's underlying member method code with example usage: obj.set_close_callback(callback) without return types