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[dotnet] quit fails after not successful new session #14242
[dotnet] quit fails after not successful new session #14242
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@Indomitable please share the exception with stacktrace you faced and you are trying to fix. Probably we may propose better solution. |
@nvborisenko Here is my input: selenium/dotnet/src/webdriver/WebDriver.cs Line 651 in 6b28a8c
this leads to calling the Quit() in the catch
which calls Dispose and then the Quit commandselenium/dotnet/src/webdriver/WebDriver.cs Line 706 in 6b28a8c
but since the sessionId is not initialized yet , a NullReferenceException is thrown when tries to build the URL for the quit command
As I wrote in the Java client this is fixed using second try/catch for the quit methodselenium/java/src/org/openqa/selenium/remote/RemoteWebDriver.java Lines 160 to 170 in 6b28a8c
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I understand the flow how it is happening. I am curious in the stracktrace (what you see in your output). My thoughts:
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Here is the stack trace. I'm using the Appium.NET library which uses Selenium
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So it depends from the server. In this case the Appium server returns empty body and we get json deserialization issue. One more problem that I see is that a |
@Indomitable Ok, seems I am right that I propose to align with java implementation, probably they know hidden stones:
So in |
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PR is updated with the try/catch around the Quit. |
If new session creation fails a Quit() method is called which calls Dispose and then Quit command, unfortunately in this case session is still not created and it throws null reference exception and this hides the actual exception
In order to propagate the original error when session fails, surround the Quit call in try/catch in case it also throws an exception.
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Thanks for your contribution!
* [dotnet] do not execute Quit command when sessionId is not available If new session creation fails a Quit() method is called which calls Dispose and then Quit command, unfortunately in this case session is still not created and it throws null reference exception and this hides the actual exception * [dotnet] ignore exceptions from Quit when new session fails In order to propagate the original error when session fails, surround the Quit call in try/catch in case it also throws an exception. --------- Co-authored-by: Nikolay Borisenko <[email protected]>
User description
If new session creation fails a Quit() method is called which calls Dispose and then Quit command, unfortunately in this case session is still not created and it throws null reference exception and this hides the actual exception
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This PR fixes a bug which calls Quit command after trying to create new session. If session fails it calls the Quit method in order to dispose the driver and the commander, unfortunately since the session id is null the Execute Quit command fails with null reference exception.
For reference in Java client this is solved with another try/catch when calling
quit()
but I think checking the session id if null is better solution.PR Type
Bug fix
Description
sessionId
before executing the Quit command inDispose
method to prevent null reference exceptions when session creation fails.Changes walkthrough 📝
WebDriver.cs
Add null check for sessionId before executing Quit command
dotnet/src/webdriver/WebDriver.cs
sessionId
before executing the Quit command.