Selenium: [Python][Chrome] Vendor specific commands not available with Remote webdriver

[tomaszn]

Meta -

OS:
Linux
Selenium Version:
3.13, Python bidings
Browser:
Chrome

Browser Version:
ChromeDriver 2.40.565383, Chrome 66

Expected Behavior -

set_network_conditions and get_network_conditions work properly and in the same way on local and remote browsers.

Actual Behavior -

For remote Chrome browsers an exception is thrown:
AttributeError: 'WebDriver' object has no attribute 'set_network_conditions'

Steps to reproduce -

from selenium.webdriver import Remote, Chrome

# works fine locally
Chrome().set_network_conditions(latency=5, throughput=5000)

# should also work on selenium/standalone-chrome Docker image on localhost:4444/wd/hub
caps = desired_capabilities={'browserName':'chrome'}
Remote(desired_capabilities=caps).set_network_conditions(latency=5, throughput=5000)

Traceback (most recent call last):
  File "<input>", line 1, in <module>
    Remote(desired_capabilities=caps).set_network_conditions(latency=5, throughput=5000)
AttributeError: 'WebDriver' object has no attribute 'set_network_conditions'

What is the correct way to implement it?

[netzulo]

got the same error, but when i use local chrome got this message

• i don't know yet if it's my combination of chrome driver version + selenium version problem
  or if it's selenium problem...
• for examples im using my own selenium wrapper for python , so... ignore not selenium code.

• for examples im using this chrome driver files for all SO : https://github.com/netzulo/qadrivers/tree/v0.0.7#chrome

• [x] FAILED Testcase: open selenium browser using mode local , driver chrome and execute set_network_conditions with params latency=5, throughput=5000

• [x] FAILED Testcase: open selenium browser using mode remote , driver chrome and execute set_network_conditions with params latency=5, throughput=5000

Local chrome example

from qacode.core.bots.bot_base import BotBase
from qacode.core.webs.controls.control_base import ControlBase
SETTINGS = {
    "bot": {
        "log_output_file": "./",
        "log_name": "selenium-issue6217",
        "log_level": "DEBUG",
        "mode": "local",
        "browser": "chrome",
        "options": {"headless": False},
        "url_hub": "http://localhost:11000/wd/hub",
        "drivers_path": "../qadrivers/",
        "drivers_names": ["chromedriver_64.exe"]
    }
}
bot = None
try:
    bot = BotBase(**SETTINGS)
    import pdb; pdb.set_trace() # TODO, remove DEBUG lane
    # TEST
    bot.curr_driver.set_network_conditions(latency=5, throughput=5000)
    # END
    import pdb; pdb.set_trace() # TODO, remove DEBUG lane
except Exception as err:
    print("ERROR: {}".format(err))
finally:
    bot.close()

• local chrome log

(qacode) D:\4.developmentWorkSpaces\1.GITHUB\qalab\modules\qacode>python delete_me.py
2018-07-29 14:56:54,667 - selenium-issue6217 - DEBUG - Starting browser with mode : LOCAL ...
[33336:33096:0729/145657.877:ERROR:install_util.cc(589)] Unable to create registry key HKLM\SOFTWARE\Policies\Google\Chrome for reading result=2

remote ( selenium-hub + selenium node ) chrome example

from qacode.core.bots.bot_base import BotBase
from qacode.core.webs.controls.control_base import ControlBase
SETTINGS = {
    "bot": {
        "log_output_file": "./",
        "log_name": "selenium-issue6217",
        "log_level": "DEBUG",
        "mode": "remote",
        "browser": "chrome",
        "options": {"headless": False},
        "url_hub": "http://localhost:11000/wd/hub",
        "drivers_path": "../qadrivers/",
        "drivers_names": []
    }
}
bot = None
try:
    bot = BotBase(**SETTINGS)
    import pdb; pdb.set_trace() # TODO, remove DEBUG lane
    # TEST
    #nc = bot.curr_driver.get_network_conditions()
    bot.curr_driver.set_network_conditions(latency=5, throughput=5000)
    # END
    import pdb; pdb.set_trace() # TODO, remove DEBUG lane
    #print(nc)
except Exception as err:
    print("ERROR: {}".format(err))
finally:
    bot.close()

• remote chrome log

(qacode) D:\4.developmentWorkSpaces\1.GITHUB\qalab\modules\qacode>python delete_me.py
2018-07-29 15:03:06,888 - selenium-issue6217 - DEBUG - Starting browser with mode : REMOTE ...
2018-07-29 15:03:10,939 - selenium-issue6217 - INFO - Started browser with mode : REMOTE OK
> d:\4.developmentworkspaces\1.github\qalab\modules\qacode\delete_me.py(22)<module>()
-> bot.curr_driver.set_network_conditions(latency=5, throughput=5000)
(Pdb) c
ERROR: 'WebDriver' object has no attribute 'set_network_conditions'
2018-07-29 15:03:18,113 - selenium-issue6217 - DEBUG - Closing browser...
2018-07-29 15:03:18,151 - selenium-issue6217 - INFO - Closed browser

Expect will be usefull for all :)

[cgoldberg]

for examples im using my own selenium wrapper for python

@netzulo,
Your example code is not helpful. If you have an issue with Selenium, please post selenium related code.

[netzulo]

ok. ill keep up in my mind for the next... you have reason, can be confuse :/ right right , ty @cgoldberg

you want to me delete comment ?

[tomaszn]

This workaround works for me:

# monkey patch: add network conditions support to Remote WebDriver
from selenium import webdriver
remote = webdriver.Remote(...)

from selenium.webdriver.chrome.remote_connection import ChromeRemoteConnection
remote.command_executor = ChromeRemoteConnection(remote.command_executor._url)

import types
remote.set_network_conditions = types.MethodType(webdriver.Chrome.set_network_conditions, remote)
remote.get_network_conditions = types.MethodType(webdriver.Chrome.get_network_conditions, remote)

[lmtierney]

We currently only support vendor-specific endpoints in vendor-specific webdriver classes, as is the same with the other language bindings. This may change in the future, but for now that is the implementation.