Calling Delete Session after Close Window returns error #966

ghost · 2017-09-21T08:38:29Z

System

Version: 0.19.0
Platform: Windows 10 64 Bit
Firefox: 55.0.3 (64-bit)
Selenium: Selenium-Java 3.5.3
Java: 1.8.0_144

Testcase

The following code attempts to simply open the browser, request "https://www.google.com/" and close the browser again.

package your_package_name

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Main {
	
	public static void main(String[] args) {
		System.setProperty("webdriver.gecko.driver", "C:\\dev\\Webdev\\Binaries\\geckodriver.exe");
		WebDriver driver = new FirefoxDriver(new FirefoxOptions().setLogLevel(Level.ALL));
		
		driver.get("https://www.google.com");
		driver.close();
	}

}

Stacktrace

There is no direct stacktrace, since there's no "Exception" happening within the JVM per se, however I get a windows notification, that "Mozilla Firefox stopped working correctly". If you need any logs from that, I'd gladly provide them if you tell me where I can find them.

In addition to that, after Mozilla crashes, it leaves a "geckodriver.exe" zombie process, which can be only killed through
taskkill /im geckodriver.exe /f
constantly draining 20 MB RAM, as well as small amounts of CPU usage, even though the JVM finished execution.

Trace-level log

I have decided to set the Log-Level to "ALL", since the Java geckodriver doesn't support Log.TRACE.

1505982734793	geckodriver	INFO	geckodriver 0.19.0
1505982734810	geckodriver	INFO	Listening on 127.0.0.1:29414
1505982735553	mozrunner::runner	INFO	Running command: "C:\\Program Files\\Mozilla Firefox\\firefox.exe" "-marionette" "-profile" "C:\\Users\\WMESCH~1\\AppData\\Local\\Temp\\rust_mozprofile.pUG9YPIn5vtA"
1505982737086	addons.xpi	WARN	Error parsing extensions state: [Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [amIAddonManagerStartup.readStartupData]"  nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)"  location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm :: loadExtensionState :: line 1596"  data: no] Stack trace: loadExtensionState()@resource://gre/modules/addons/XPIProvider.jsm:1596 < getInstallState()@resource://gre/modules/addons/XPIProvider.jsm:1631 < checkForChanges()@resource://gre/modules/addons/XPIProvider.jsm:3152 < startup()@resource://gre/modules/addons/XPIProvider.jsm:2246 < callProvider()@resource://gre/modules/AddonManager.jsm:271 < _startProvider()@resource://gre/modules/AddonManager.jsm:741 < startup()@resource://gre/modules/AddonManager.jsm:908 < startup()@resource://gre/modules/AddonManager.jsm:3122 < observe()@jar:file:///C:/Program%20Files/Mozilla%20Firefox/omni.ja!/components/addonManager.js:65
1505982737608	geckodriver::marionette	TRACE	  connection attempt 0/600
1505982737809	Marionette	DEBUG	Received observer notification "profile-after-change"
1505982738211	Marionette	DEBUG	Received observer notification "command-line-startup"
1505982738211	Marionette	INFO	Enabled via --marionette
1505982739714	geckodriver::marionette	TRACE	  connection attempt 1/600
1505982740840	Marionette	DEBUG	Received observer notification "sessionstore-windows-restored"
1505982740841	Marionette	DEBUG	Received observer notification "sessionstore-windows-restored"
1505982741046	Marionette	DEBUG	Received observer notification "domwindowclosed"
1505982741048	Marionette	DEBUG	Received observer notification "domwindowclosed"
Unable to read VR Path Registry from C:\Users\wmeschalin\AppData\Local\openvr\openvrpaths.vrpath
[Child 8348] WARNING: pipe error: 109: file c:/builds/moz2_slave/m-rel-w64-00000000000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
[Child 8348] WARNING: pipe error: 109: file c:/builds/moz2_slave/m-rel-w64-00000000000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 346
1505982741473	Marionette	DEBUG	Setting recommended pref toolkit.cosmeticAnimations.enabled to false
1505982741475	Marionette	DEBUG	Setting recommended pref datareporting.policy.dataSubmissionPolicyAccepted to false
1505982741477	Marionette	INFO	Listening on port 57240
1505982741579	Marionette	INFO	Listening on port 57240
1505982741823	geckodriver::marionette	TRACE	  connection attempt 2/600
1505982741924	geckodriver::marionette	DEBUG	Connected to Marionette on localhost:57240
1505982741934	Marionette	DEBUG	Accepted connection 0 from 127.0.0.1:57258
1505982741940	geckodriver::marionette	TRACE	<- {"applicationType":"gecko","marionetteProtocol":3}
1505982741941	geckodriver::marionette	TRACE	-> 62:[0,1,"newSession",{"capabilities":{"desiredCapabilities":{}}}]
1505982741943	Marionette	TRACE	0 -> [0,1,"newSession",{"capabilities":{"desiredCapabilities":{}}}]
1505982741946	Marionette	CONFIG	Matched capabilities: {"browserName":"firefox","browserVersion":"55.0.3","platformName":"windows_nt","platformVersion":"10.0","pageLoadStrategy":"normal","acceptInsecureCerts":false,"timeouts":{"implicit":0,"pageLoad":300000,"script":30000},"rotatable":false,"specificationLevel":0,"moz:processID":7856,"moz:profile":"C:\\Users\\WMESCH~1\\AppData\\Local\\Temp\\rust_mozprofile.pUG9YPIn5vtA","moz:accessibilityChecks":false}
1505982741997	Marionette	DEBUG	loaded listener.js
1505982742023	Marionette	TRACE	0 <- [1,1,null,{"sessionId":"59a4038e-62cd-44e9-b4b3-14c4b10d5f16","capabilities":{"browserName":"firefox","browserVersion":"55.0.3","platformName":"windows_nt","platformVersion":"10.0","pageLoadStrategy":"normal","acceptInsecureCerts":false,"timeouts":{"implicit":0,"pageLoad":300000,"script":30000},"rotatable":false,"specificationLevel":0,"moz:processID":7856,"moz:profile":"C:\\Users\\WMESCH~1\\AppData\\Local\\Temp\\rust_mozprofile.pUG9YPIn5vtA","moz:accessibilityChecks":false}}]
1505982742032	geckodriver::marionette	TRACE	<- [1,1,null,{"sessionId":"59a4038e-62cd-44e9-b4b3-14c4b10d5f16","capabilities":{"browserName":"firefox","browserVersion":"55.0.3","platformName":"windows_nt","platformVersion":"10.0","pageLoadStrategy":"normal","acceptInsecureCerts":false,"timeouts":{"implicit":0,"pageLoad":300000,"script":30000},"rotatable":false,"specificationLevel":0,"moz:processID":7856,"moz:profile":"C:\\Users\\WMESCH~1\\AppData\\Local\\Temp\\rust_mozprofile.pUG9YPIn5vtA","moz:accessibilityChecks":false}}]
1505982742032	webdriver::server	DEBUG	<- 200 OK {"value": {"sessionId":"59a4038e-62cd-44e9-b4b3-14c4b10d5f16","capabilities":{"acceptInsecureCerts":false,"browserName":"firefox","browserVersion":"55.0.3","moz:accessibilityChecks":false,"moz:processID":7856,"moz:profile":"C:\\Users\\WMESCH~1\\AppData\\Local\\Temp\\rust_mozprofile.pUG9YPIn5vtA","pageLoadStrategy":"normal","platformName":"windows_nt","platformVersion":"10.0","rotatable":false,"specificationLevel":0,"timeouts":{"implicit":0,"pageLoad":300000,"script":30000}}}}
Sep 21, 2017 10:32:22 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFORMATION: Detected dialect: W3C
1505982742191	webdriver::server	DEBUG	-> POST /session/59a4038e-62cd-44e9-b4b3-14c4b10d5f16/url {"url":"https://www.google.com"}
1505982742192	geckodriver::marionette	TRACE	-> 44:[0,2,"get",{"url":"https://www.google.com"}]
1505982742206	Marionette	TRACE	0 -> [0,2,"get",{"url":"https://www.google.com"}]
1505982742211	Marionette	DEBUG	Received DOM event "beforeunload" for "about:blank"
1505982742676	Marionette	DEBUG	Received DOM event "pagehide" for "about:blank"
1505982742677	Marionette	DEBUG	Received DOM event "unload" for "about:blank"
1505982742967	Marionette	DEBUG	Received DOM event "DOMContentLoaded" for "https://www.google.de/?gfe_rd=cr&dcr=0&ei=FnnDWfSIEsL68AeYtIGAAw"
1505982743480	Marionette	DEBUG	Received observer notification "outer-window-destroyed" for "4294967301"
1505982743724	Marionette	DEBUG	Received DOM event "DOMContentLoaded" for "https://www.google.de/?gfe_rd=cr&dcr=0&ei=FnnDWfSIEsL68AeYtIGAAw"
1505982743726	Marionette	DEBUG	Received DOM event "pageshow" for "https://www.google.de/?gfe_rd=cr&dcr=0&ei=FnnDWfSIEsL68AeYtIGAAw"
1505982743802	Marionette	DEBUG	Received DOM event "pageshow" for "https://www.google.de/?gfe_rd=cr&dcr=0&ei=FnnDWfSIEsL68AeYtIGAAw"
1505982743804	Marionette	TRACE	0 <- [1,2,null,{}]
1505982743809	geckodriver::marionette	TRACE	<- [1,2,null,{}]
1505982743809	webdriver::server	DEBUG	<- 200 OK {"value": {}}
1505982743818	webdriver::server	DEBUG	-> DELETE /session/59a4038e-62cd-44e9-b4b3-14c4b10d5f16/window 
1505982743819	geckodriver::marionette	TRACE	-> 16:[0,3,"close",{}]
1505982743821	Marionette	TRACE	0 -> [0,3,"close",{}]
1505982743823	Marionette	TRACE	0 <- [1,3,null,[]]
1505982743829	geckodriver::marionette	TRACE	<- [1,3,null,[]]
1505982743829	webdriver::server	DEBUG	Last window was closed, deleting session
1505982743829	webdriver::server	DEBUG	Deleting session
1505982743829	geckodriver::marionette	DEBUG	Stopping browser process
1505982744533	webdriver::server	DEBUG	<- 200 OK {"value": []}

If you need additional information I will provide them as soon as possible.
Best regards,
WM

The text was updated successfully, but these errors were encountered:

curtisy1 · 2017-09-21T12:06:15Z

What happens if you properly call driver.quit() after dirver.close()? The trace log looks like everything went without issues.

ghost · 2017-09-21T12:16:07Z

Same log as before, however, this is appended:

1505996023009	webdriver::server	DEBUG	-> DELETE /session/38238f7a-29a7-4a6f-806a-a8cac01a783d 
1505996023012	webdriver::server	DEBUG	<- 500 Internal Server Error {"value":{"error":"session not created","message":"Tried to run command without establishing a connection","stacktrace":"stack backtrace:\n   0:           0x4821c4 - <no info>\n   1:           0x482933 - <no info>\n   2:           0x445281 - <no info>\n   3:           0x42fef7 - <no info>\n   4:           0x40ba4e - <no info>\n   5:           0x4119b9 - <no info>\n   6:           0x6d2c89 - <no info>\n   7:           0x426006 - <no info>\n   8:           0x6cd490 - <no info>\n   9:     0x7ff9c77f2774 - BaseThreadInitThunk"}}
1505996023066	webdriver::server	DEBUG	-> GET /shutdown 
1505996023068	webdriver::server	DEBUG	<- 404 Not Found {"value":{"error":"unknown command","message":"GET /shutdown did not match a known command","stacktrace":"stack backtrace:\n   0:           0x4821c4 - <no info>\n   1:           0x482933 - <no info>\n   2:           0x445159 - <no info>\n   3:           0x43f00a - <no info>\n   4:           0x409e7b - <no info>\n   5:           0x41198a - <no info>\n   6:           0x6d2c89 - <no info>\n   7:           0x426245 - <no info>\n   8:           0x6cd490 - <no info>\n   9:     0x7ff9c77f2774 - BaseThreadInitThunk"}}
Sep 21, 2017 2:13:52 PM org.openqa.selenium.os.UnixProcess destroy
INFORMATION: Unable to drain process streams. Ignoring but the exception being swallowed follows.
org.apache.commons.exec.ExecuteException: The stop timeout of 2000 ms was exceeded (Exit value: -559038737)
	at org.apache.commons.exec.PumpStreamHandler.stopThread(PumpStreamHandler.java:295)
	at org.apache.commons.exec.PumpStreamHandler.stop(PumpStreamHandler.java:181)
	at org.openqa.selenium.os.UnixProcess.destroy(UnixProcess.java:137)
	at org.openqa.selenium.os.CommandLine.destroy(CommandLine.java:153)
	at org.openqa.selenium.remote.service.DriverService.stop(DriverService.java:220)
	at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:94)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:646)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:703)
	at org.openqa.selenium.remote.RemoteWebDriver.quit(RemoteWebDriver.java:542)
	at cucumberTest.SeleniumTest.main(SeleniumTest.java:17)

Sep 21, 2017 2:13:52 PM org.openqa.selenium.os.UnixProcess destroy
CRITICAL: Unable to kill process with PID 12752
Exception in thread "main" org.openqa.selenium.SessionNotCreatedException: Tried to run command without establishing a connection
Build info: version: 'unknown', revision: 'unknown', time: 'unknown'
System info: host: 'R1002-WME', ip: 'XXX.XXX.XXX.XXX', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_144'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{moz:profile=C:\Users\WMESCH~1\AppData\Local\Temp\rust_mozprofile.4xs3beHcB9x2, rotatable=false, timeouts={implicit=0, pageLoad=300000, script=30000}, pageLoadStrategy=normal, platform=XP, specificationLevel=0, moz:accessibilityChecks=false, acceptInsecureCerts=false, browserVersion=55.0.3, platformVersion=10.0, moz:processID=10204, browserName=firefox, javascriptEnabled=true, platformName=XP}]
Session ID: 38238f7a-29a7-4a6f-806a-a8cac01a783d
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:185)
	at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:120)
	at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:164)
	at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:82)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:646)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:703)
	at org.openqa.selenium.remote.RemoteWebDriver.quit(RemoteWebDriver.java:542)
	at cucumberTest.SeleniumTest.main(SeleniumTest.java:17)

Same thing, another zombie process, another crash.

andreastt · 2017-09-22T12:34:19Z

This is expected behaviour. The Close Window command should end the session if it closes the last window. The subsequent Delete Session command then returns an error because the session has already been ended.

Please file a bug with your client.

ghost · 2017-09-25T08:05:32Z

So the zombie geckodriver.exe Thread is also "expected behavior" since it doesn't really ever end, right?
I would expect geckodriver to properly close Firefox instead of just crashing it, since the IEDriver and chromedriver both manage to close their browsers without crashing them.

Also, if I run a hundred different selenium tests, and all of them leave a zombie process draining 20 MB, I will effectively waste 2 GB in RAM.
You can close threads all you like, if I need to write workarounds for an obvious programming flaw then this is actually quite sad for a company of the size of mozilla.

curtisy1 · 2017-09-25T18:17:24Z

It's not a programming flaw whatsoever, as it works for many other people (including me). The issue was closed as a replica of #966, which how I see it is exactly what you experience as well. If you have anything that differs your issue from #966, feel free to say so and I'm sure the members will consider reopening it. However speaking ill of people who work on this in their free-time when we don't even know what your code looks like is the wrong approach if you ask me. A couple things to consider.

…

On Mo., 25. Sep. 2017, 10:05 Waldemar M. ***@***.***> wrote: So the zombie geckodriver.exe Thread is also "expected behavior" since it doesn't really ever end, right? I would expect geckodriver to properly close Firefox instead of just crashing it, since the IEDriver and chromedriver both manage to close their browsers without crashing them. Also, if I run a hundred different selenium tests, and all of them leave a zombie process draining 20 MB, I will effectively waste 2 GB in RAM. You can close threads all you like, if I need to write workarounds for an obvious programming flaw then this is actually quite sad for a company of the size of mozilla. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#966 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AWiZGH_W4Osp92wb9llhDx19nyCN7BQwks5sl17WgaJpZM4Pe-4A> .

ghost · 2017-09-26T07:39:30Z

You're referencing my own ticket @curtisy1. I'm refering to THIS issue, if the geckodriver leaves zombie threads then this is not good. It's not something that can be simply overlooked, since it might be detrimental to the testing environment, since it's wasting RAM and ports.

I consider to have a right to criticize other programmers if they're producing potentially dangerous errors. Especially if they're doing this for a big name as mozilla, free-time or not. There's no excuse for leaving flaws in software, if they're avoidable. And this really seems like a geckodriver issue instead of other issues, since I can literally use "driver.quit();" and it doesn't produce the error explained here, however doesn't have the behavior I want to have.

I'm going to look into different versions of Firefox, I'll see if that makes any difference and if it does I'll provide my answer here.

curtisy1 · 2017-09-26T09:24:37Z

Driver.quit() is the only way to close the driver though, this is expected behaviour. As far as I know, driver.close() only closes the instance of an open browser, not the driver. So I'm repeating myself: this is not bad programming because it only doesn't work for you. Tell us why you don't want to use driver.quit() and I'm sure we'll find a solution.

…

On Di., 26. Sep. 2017, 09:39 Waldemar M. ***@***.***> wrote: You're referencing my own ticket @curtisy1 <https://github.com/curtisy1>. I'm refering to THIS issue, if the geckodriver opens zombie threads then this is not good. It's not something that can be simply overlooked, since it might be detrimental to the testing environment, since it's wasting RAM and ports. I consider to have a right to criticize other programmers if they're producing potentially dangerous errors. Especially if they're doing this for a big name as mozilla, free-time or not. There's no excuse for leaving flaws in software, if they're avoidable. And this really seems like a geckodriver issue instead of other issues, since I can literally use "driver.quit();" and it doesn't produce the error explained here, however doesn't have the behavior I want to have. I'm going to look into different versions of Firefox, I'll see if that makes any difference and if it does I'll provide my answer here. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#966 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AWiZGNXo-OIZUlx2oA22ACm-vju8bd0Wks5smKo7gaJpZM4Pe-4A> .

whimboo · 2017-09-26T10:44:22Z

@KrypTheBear can you please test with Firefox 56.0 which will be released today? I'm fairly sure you won't see the crash anymore. If you want to test right away you can use the latest beta release.

I would like to know if that makes a difference to you. But generally it's correct that geckodriver should better handle that.

whimboo · 2017-09-26T11:13:20Z

Btw. for handling the crash we have issue #954 and bug 1401109

ghost · 2017-09-26T11:39:44Z

@whimboo Alright, using the newest version of the Firefox at least prevents it from crashing, hooray :)

As to why I'm unwilling to use driver.quit() => After using driver.close(); to close the active window, and then calling driver.quit(); I recieve an org.openqa.selenium.SessionNotCreatedException which messes up the execution by a good bit. (Like I mentioned in my log before that you were asking for. @curtisy1 ) This should not be expected behavior. I suspect that we don't check here for the case of "We just want to close the driver and have no open Firefox sessions".

And thanks again for the help, I really do appreciate it.

whimboo · 2017-09-27T08:51:38Z

For details in how close should be handled see here:
https://w3c.github.io/webdriver/webdriver-spec.html#close-window

That said, if only a single tab/window is open it will be closed, and as such the session will be closed too. A following call to quit will indeed cause an issue as layed out above.

But reading the spec about Delete Session I see:

If the current session is an active session, try to close the session.

Return success with data null.

There is nothing specified how an already deleted session should be handled. By the above words I assume we should do nothing, and still return success.

@andreastt can you please have a closer look here? I'm reopening it for now.

andreastt · 2017-09-27T10:33:01Z

@whimboo I made a change to the Delete Session command some time ago so that it always return success. I don’t think this is reflected in geckodriver yet.

andreastt · 2017-09-27T10:36:18Z

Filed https://bugzilla.mozilla.org/show_bug.cgi?id=1403510 to track this.

whimboo · 2017-09-27T11:29:05Z

Ok, so it's a geckodriver and not Selenium issue. Thanks.

whimboo · 2018-06-01T09:31:45Z

Dupe of issue #732.

lock · 2019-08-16T19:55:08Z

This issue has been automatically locked since there has not been any recent activity after it was closed. If you have run into an issue you think is related, please open a new issue.

andreastt closed this as completed Sep 22, 2017

andreastt added the selenium label Sep 22, 2017

andreastt mentioned this issue Sep 22, 2017

geckodriver does not close the browser after quit() when "Are you Sure ? Leave Page .. Stay On Page" alert appears #970

Closed

whimboo reopened this Sep 27, 2017

andreastt changed the title ~~geckodriver 0.19.0 crashes Mozilla Firefox after invoking driver.close();~~ Calling Delete Session after Close Window returns error Sep 27, 2017

whimboo added geckodriver and removed selenium labels Sep 27, 2017

andreastt mentioned this issue Sep 27, 2017

Unble to close the firefox browser instance or session using driver.quit() command #975

Closed

whimboo mentioned this issue Nov 27, 2017

Firefox 56, geckodriver 0.19.0 error/exception in driver.quit() #1071

Closed

hussein-alahmad mentioned this issue Dec 31, 2017

fix for NUTCH-2460 contributed by Hussein Alahmad apache/nutch#245

Closed

whimboo added duplicate and removed geckodriver labels Jun 1, 2018

whimboo closed this as completed Jun 1, 2018

krotscheck mentioned this issue Jun 4, 2018

Fix CircleCI Build angular/protractor#4837

Merged

mivtachyahu mentioned this issue Aug 20, 2018

Updated geckodriver version, selenium-webdriver john-doherty/selenium-cucumber-js#74

Merged

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Calling Delete Session after Close Window returns error #966

Calling Delete Session after Close Window returns error #966

ghost commented Sep 21, 2017 •

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lock bot commented Aug 16, 2019

Calling Delete Session after Close Window returns error #966

Calling Delete Session after Close Window returns error #966

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ghost commented Sep 21, 2017 • edited by ghost Loading

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