[🐛 Bug]: NullPointerException while using DevTools instance with JDK 11 Http Client

[pujagani]

What happened?

Using JDK 11 Http Client prevents reusing of DevTools instance. Earlier, this was not a problem since Selenium used a single instance of AsyncHttpClient and it was only closed when the JVM shuts down. But with the JdkHttpClient, Selenium uses a new instance each time and closes it too.
Changes made as part of #11345, which assigns the client to null while closing causes an NPE when re-using DevTools instance. The changes were made to prevent memory leaks.

I am not sure about the right approach to address this. I will need to look into it further.

How can we reproduce the issue?

Run https://github.com/SeleniumHQ/selenium/blob/trunk/java/test/org/openqa/selenium/devtools/DevToolsReuseTest.java with JDK 11 Http Client

Relevant log output

Cannot invoke "java.net.http.HttpClient.newWebSocketBuilder()" because "this.client" is null
java.lang.NullPointerException: 
	at org.openqa.selenium.remote.http.jdk.JdkHttpClient.openSocket(JdkHttpClient.java:168)
	at org.openqa.selenium.devtools.Connection.reopen(Connection.java:92)
	at org.openqa.selenium.devtools.DevTools.createSession(DevTools.java:129)
	at org.openqa.selenium.devtools.DevTools.createSession(DevTools.java:117)
	at org.openqa.selenium.devtools.DevToolsReuseTest.shouldBeAbleToCloseDevToolsAndCreateNewInstance(DevToolsReuseTest.java:41)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)

Operating System

macOS Ventura

Selenium version

Java 4.13.0

What are the browser(s) and version(s) where you see this issue?

Chrome 117

What are the browser driver(s) and version(s) where you see this issue?

ChromeDriver Version: 117.0.5938.149

Are you using Selenium Grid?

No response

[github-actions]

@pujagani, thank you for creating this issue. We will troubleshoot it as soon as we can.

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[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.