Appium [求助] appium 多设备同时运行获取 webview handle 报错：An unknown server-side error occurred while processing the command. Original error: disconnected: unable to connect to renderer
启动 appium
appium -a 127.0.0.1 -p 4725 -bp 4726 -U d3f9cc74 --no-reset at Fri Dec 13 15:51:50 2019
appium -a 127.0.0.1 -p 4723 -bp 4724 -U 399f7063 --no-reset at Fri Dec 13 15:51:50 2019
desired_caps
{'platformName': 'android', 'noReset': True, 'appPackage': 'com.tencent.mm', 'appActivity': '.ui.LauncherUI', 'automationName': 'UIAutomator2', 'chromedriverExecutableDir': '/Users/xxx/dev/chromedriver/2.39', 'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0'}, 'deviceName': '399f7063', 'udid': '399f7063', 'workDir': '399f7063', 'unicodeKeyboard': False, 'resetKeyboard': False, 'port': 4723, 'systemPort': 8200}
{'platformName': 'android', 'noReset': True, 'appPackage': 'com.tencent.mm', 'appActivity': '.ui.LauncherUI', 'automationName': 'UIAutomator2', 'chromedriverExecutableDir': '/Users/xxx/dev/chromedriver/2.39', 'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0'}, 'deviceName': 'd3f9cc74', 'udid': 'd3f9cc74', 'workDir': 'd3f9cc74', 'unicodeKeyboard': False, 'resetKeyboard': False, 'port': 4725, 'systemPort': 8201}
上面是我的启动过程，由于在微信小程序里面需要切换到不同的页面，我的处理方式是
handles = self._driver.window_handles
for window in handles:
self._driver.switch_to.window(window)
title = self._driver.title
if ':VISIBLE' in title:
logger.info(f"切换到窗口：{title}")
return True
return False
这种方式在单台设备运行的时候都没有问题，但是在多台设备同时运行的时候，运行一段时间之后再获取页面标题的时候就直接报错，报错日志如下：
self._driver.switch_to_active_wxapp_window()
common/base_driver.py:421: in switch_to_active_wxapp_window
title = self._driver.title
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py:342: in title
resp = self.execute(Command.GET_TITLE)
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py:321: in execute
self.error_handler.check_response(response)
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/appium/webdriver/errorhandler.py:29: in check_response
raise wde
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/appium/webdriver/errorhandler.py:24: in check_response
super(MobileErrorHandler, self).check_response(response)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <appium.webdriver.errorhandler.MobileErrorHandler object at 0x106954d30>
response = {'status': 500, 'value': '{"value":{"error":"unknown error","message":"An unknown server-side error occurred while pro...ocal/lib/node_modules/appium/node_modules/appium-base-driver/lib/protocol/protocol.js:443:25)\\n at <anonymous>"}}'}
def check_response(self, response):
"""
Checks that a JSON response from the WebDriver does not have an error.
:Args:
- response - The JSON response from the WebDriver server as a dictionary
object.
:Raises: If the response contains an error message.
"""
status = response.get('status', None)
if status is None or status == ErrorCode.SUCCESS:
return
value = None
message = response.get("message", "")
screen = response.get("screen", "")
stacktrace = None
if isinstance(status, int):
value_json = response.get('value', None)
if value_json and isinstance(value_json, basestring):
import json
try:
value = json.loads(value_json)
if len(value.keys()) == 1:
value = value['value']
status = value.get('error', None)
if status is None:
status = value["status"]
message = value["value"]
if not isinstance(message, basestring):
value = message
message = message.get('message')
else:
message = value.get('message', None)
except ValueError:
pass
exception_class = ErrorInResponseException
if status in ErrorCode.NO_SUCH_ELEMENT:
exception_class = NoSuchElementException
elif status in ErrorCode.NO_SUCH_FRAME:
exception_class = NoSuchFrameException
elif status in ErrorCode.NO_SUCH_WINDOW:
exception_class = NoSuchWindowException
elif status in ErrorCode.STALE_ELEMENT_REFERENCE:
exception_class = StaleElementReferenceException
elif status in ErrorCode.ELEMENT_NOT_VISIBLE:
exception_class = ElementNotVisibleException
elif status in ErrorCode.INVALID_ELEMENT_STATE:
exception_class = InvalidElementStateException
elif status in ErrorCode.INVALID_SELECTOR \
or status in ErrorCode.INVALID_XPATH_SELECTOR \
or status in ErrorCode.INVALID_XPATH_SELECTOR_RETURN_TYPER:
exception_class = InvalidSelectorException
elif status in ErrorCode.ELEMENT_IS_NOT_SELECTABLE:
exception_class = ElementNotSelectableException
elif status in ErrorCode.ELEMENT_NOT_INTERACTABLE:
exception_class = ElementNotInteractableException
elif status in ErrorCode.INVALID_COOKIE_DOMAIN:
exception_class = InvalidCookieDomainException
elif status in ErrorCode.UNABLE_TO_SET_COOKIE:
exception_class = UnableToSetCookieException
elif status in ErrorCode.TIMEOUT:
exception_class = TimeoutException
elif status in ErrorCode.SCRIPT_TIMEOUT:
exception_class = TimeoutException
elif status in ErrorCode.UNKNOWN_ERROR:
exception_class = WebDriverException
elif status in ErrorCode.UNEXPECTED_ALERT_OPEN:
exception_class = UnexpectedAlertPresentException
elif status in ErrorCode.NO_ALERT_OPEN:
exception_class = NoAlertPresentException
elif status in ErrorCode.IME_NOT_AVAILABLE:
exception_class = ImeNotAvailableException
elif status in ErrorCode.IME_ENGINE_ACTIVATION_FAILED:
exception_class = ImeActivationFailedException
elif status in ErrorCode.MOVE_TARGET_OUT_OF_BOUNDS:
exception_class = MoveTargetOutOfBoundsException
elif status in ErrorCode.JAVASCRIPT_ERROR:
exception_class = JavascriptException
elif status in ErrorCode.SESSION_NOT_CREATED:
exception_class = SessionNotCreatedException
elif status in ErrorCode.INVALID_ARGUMENT:
exception_class = InvalidArgumentException
elif status in ErrorCode.NO_SUCH_COOKIE:
exception_class = NoSuchCookieException
elif status in ErrorCode.UNABLE_TO_CAPTURE_SCREEN:
exception_class = ScreenshotException
elif status in ErrorCode.ELEMENT_CLICK_INTERCEPTED:
exception_class = ElementClickInterceptedException
elif status in ErrorCode.INSECURE_CERTIFICATE:
exception_class = InsecureCertificateException
elif status in ErrorCode.INVALID_COORDINATES:
exception_class = InvalidCoordinatesException
elif status in ErrorCode.INVALID_SESSION_ID:
exception_class = InvalidSessionIdException
elif status in ErrorCode.UNKNOWN_METHOD:
exception_class = UnknownMethodException
else:
exception_class = WebDriverException
if value == '' or value is None:
value = response['value']
if isinstance(value, basestring):
if exception_class == ErrorInResponseException:
raise exception_class(response, value)
raise exception_class(value)
if message == "" and 'message' in value:
message = value['message']
screen = None
if 'screen' in value:
screen = value['screen']
stacktrace = None
if 'stackTrace' in value and value['stackTrace']:
stacktrace = []
try:
for frame in value['stackTrace']:
line = self._value_or_default(frame, 'lineNumber', '')
file = self._value_or_default(frame, 'fileName', '<anonymous>')
if line:
file = "%s:%s" % (file, line)
meth = self._value_or_default(frame, 'methodName', '<anonymous>')
if 'className' in frame:
meth = "%s.%s" % (frame['className'], meth)
msg = " at %s (%s)"
msg = msg % (meth, file)
stacktrace.append(msg)
except TypeError:
pass
if exception_class == ErrorInResponseException:
raise exception_class(response, message)
elif exception_class == UnexpectedAlertPresentException:
alert_text = None
if 'data' in value:
alert_text = value['data'].get('text')
elif 'alert' in value:
alert_text = value['alert'].get('text')
raise exception_class(message, screen, stacktrace, alert_text)
> raise exception_class(message, screen, stacktrace)
E selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: disconnected: unable to connect to renderer
E (Session info: chrome=66.0.3359.126)
E (Driver info: chromedriver=2.39.562713 (dd642283e958a93ebf6891600db055f1f1b4f3b2),platform=Mac OS X 10.15.1 x86_64)
../../../.virtualenvs/auto-test/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py:242: WebDriverException
有谁遇到过这种问题吗？求助。
「原创声明：保留所有权利，禁止转载」
两个手机 webview 版本不同？ 给 chromedriver 的 options 启动参数分配不同端口
对
YueChen
回复
YueChen
回复
感谢回复。我的两个手机的 webview 版本是一样的。给 chromedriver 的 options 启动参数分配不同端口这句话有点没明白，这个要分配的端口和 systemport 是一样的吗？'chromeOptions': {'androidProcess': 'com.tencent.mm:appbrand0','port':'some_port'}这样吗
我试了一下，在 appium 启动的时候指定了 chromedriver 的端口，但是appium -a 127.0.0.1 -p 4725 -bp 4726 --chromedriver-port 9516 -U d3f9cc74 --no-reset --session-override，
请问你那里是可以吗？我这里一开始也是可以的，不过我的用例需要一直切换 webview，大概在切换到第 5 个左右的时候获取页面标题的时候就会报这个错误，前几个页面是可以正常获取的
楼主解决了吗，遇到了同样的问题
capacities["systemPort"] = device["systemPort"]
我这边传了不同的 systemPort，还是会出现这种问题，你那边试试
Google 了下都是这样回复的，但是我这边没用
对
胡适
回复
胡适
回复
没有，我在 appium 启动的时候指定了 chromedriver 的端口还是会报那个错误，我调试的时候看到 adb-port 都是 5037，命令应该是一个个串行发送到不同的设备上的不知道是不是这个原因。chromedriver/chromedriver_2.40 --url-base=wd/hub --port=9516 --adb-port=5037 --verbose。也试过在 desired_caps 中增加 webview 超时时间也不好使autoWebviewTimeout: 30000
前几天在 GitHub 上看了回复，他们说不是 appium 的问题，是 chromedriver 有 bug，现在想到的方案就是做隔离，可以使用 appium docker，有兴趣你可以试试