How to get unreachable URL ?

[fingerdancer]

I'm using OAuth2 Authorization Code, when submit the login page, it will redicret to an unreachable URL (eg:http://localhost:9001/authorizationserver/oauth2_callback?code=r_j1Y2EGEddYmMxxgzAPPAdia_vZwr)
I tried driver.url and window.location.href, but no one work. Both of them return "chrome-error://chromewebdata/"
Here are the sample codes

Scenario: get user token
#visit authorize url and it will redirect to the login page
Given driver "http://my-auth-server.com/authorizationserver/oauth/authorize?response_type=code&client_id=myClient"
And driver.maximize()
#wait login page load successfully and input user name password
And waitFor("//input[@type='submit']")
And input("//input[@name='username']", "[email protected]")
And input("//input[@name='password']", "pwd")

#click login button and it will redirect to http://localhost:9001/authorizationserver/oauth2_callback?code=r_j1Y2EGEddYmMxxgzAPPAdia_vZwr
And click("//input[@type='submit' and @value='Sign in']")
And delay(3000)
* karate.log("currentUrl1:",script("window.location.href"))
* karate.log("currentUrl2:", driver.url)

[ptrthomas]

I think this question belongs on stack overflow, refer these answers: https://stackoverflow.com/a/63706655/143475