我有一个应用程序，需要一个长时间运行的Selenium Web驱动程序示例（我使用Chrome driver 83.0.4103.39在无头模式）.基本上应用程序不断拉取url数据从一个队列，并把提取的url给Selenium应该执行一些分析网站.许多这些网站可能会关闭，无法访问或损坏，因此我设置了10秒页面加载超时，以避免Selenium永远等待页面加载。
这里的问题是在执行一段时间后（比如说10分钟）Selenium开始对每个url给予Timed out receiving message from renderer错误，最初它工作正常，正确打开好的网站，对坏的网站超时（网站无法加载），但一段时间后，它开始给予超时的一切，甚至网站，应该正确打开（我已经检查过了，它们在Chrome浏览器上可以正确打开）。我很难调试这个问题，因为应用程序中的每个异常都被正确捕获。我还注意到这个问题只发生在headless模式下。

• 最新情况 *

在网站分析过程中，我还需要考虑iframe（仅顶层），因此我还添加了一个逻辑来将驱动程序上下文切换到主页中的每个iframe，并提取相关的html。
这是应用程序的简化版本：

import traceback
from time import sleep
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

width = 1024
height = 768

chrome_options = Options()
chrome_options.page_load_strategy = 'normal'
chrome_options.add_argument('--enable-automation')
chrome_options.add_argument('disable-infobars')
chrome_options.add_argument('--disable-gpu')
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--lang=en')
chrome_options.add_argument('--ignore-certificate-errors')
chrome_options.add_argument('--allow-insecure-localhost')
chrome_options.add_argument('--allow-running-insecure-content')
chrome_options.add_argument('--disable-notifications')
chrome_options.add_argument('--disable-dev-shm-usage')
chrome_options.add_argument('--disable-browser-side-navigation')
chrome_options.add_argument('--mute-audio')
chrome_options.add_argument('--headless')
chrome_options.add_argument('--force-device-scale-factor=1')
chrome_options.add_argument(f'window-size={width}x{height}')

chrome_options.add_experimental_option(
    'prefs', {
        'intl.accept_languages': 'en,en_US',
        'download.prompt_for_download': False,
        'download.default_directory': '/dev/null',
        'automatic_downloads': 2,
        'download_restrictions': 3,
        'notifications': 2,
        'media_stream': 2,
        'media_stream_mic': 2,
        'media_stream_camera': 2,
        'durable_storage': 2,
    }
)

driver = webdriver.Chrome(options=options)
driver.set_page_load_timeout(10)  # Timeout 10 seconds

# Polling queue
while True:
    url = queue.pop()

    # Try open url
    try:
        driver.get(url)
    except BaseException as e:
        print(e)
        print(traceback.format_exc())
        continue

    # Take website screenshot
    png = driver.get_screenshot_as_png()

    # Extract html from iframes (if any)
    htmls = [driver.page_source]
    iframes = driver.find_elements_by_xpath("//iframe")

    for index, iframe in enumerate(iframes):
        try:
            driver.switch_to.frame(index)
            htmls.append(driver.page_source)
            driver.switch_to.default_content()
        except BaseException as e:
            print(e)
            print(traceback.format_exc())
            continue

    # Do some analysis
    for html in htmls:
        # ...
        pass

    # Wait a bit
    sleep(0.1)

以下是堆栈跟踪的示例：

Opening https://www.yourmechanic.com/user/appointment/3732777/?access_token=HLZYIg&ukey=6quWpg1724633&rcode=abttgi&utm_medium=sms&utm_source= rb
LOAD EXCEPTION Message: timeout: Timed out receiving message from renderer: 10.000
  (Session info: headless chrome=83.0.4103.116)

Traceback (most recent call last):
  File "/Users/macbmacbookpro4ookpro4/Documents/Projects/python/proj001/main.py", line 202, in inference
    driver.get(url)
  File "/opt/anaconda3/envs/cv/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 333, in get
    self.execute(Command.GET, {'url': url})
  File "/opt/anaconda3/envs/cv/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/opt/anaconda3/envs/cv/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: timeout: Timed out receiving message from renderer: 10.000
  (Session info: headless chrome=83.0.4103.116)

有人知道为什么在正确执行一段时间后，Selenium开始为它试图打开的任何URL给予超时异常吗？