docstr: Called by IOLoop periodically to ask libcurl to process any
  events it may have forgotten about.
docstr_tok: ["Called","by","IOLoop","periodically","to","ask","libcurl","to","process","any","events","it","may","have","forgotten","about","."]
code: def _handle_force_timeout(self) -> None:
      """Called by IOLoop periodically to ask libcurl to process any
      events it may have forgotten about.
      """
      while True:
          try:
              ret, num_handles = self._multi.socket_all()
          except pycurl.error as e:
              ret = e.args[0]
          if ret != pycurl.E_CALL_MULTI_PERFORM:
              break
      self._finish_pending_requests()
  
imports: import collections
  import functools
  import logging
  import pycurl
  import threading
  import time
  from io import BytesIO
  from tornado import httputil
  from tornado import ioloop
  from tornado.escape import utf8, native_str
  from tornado.httpclient import HTTPRequest, HTTPResponse, HTTPError, AsyncHTTPClient, main
  from tornado.log import app_log
  from typing import Dict, Any, Callable, Union, Optional
  import typing
label_desc: Use image node_id 8 for calling the CurlAsyncHTTPClient obj's underlying member method code with example usage: obj._handle_force_timeout() without return types