Error in Running Chrome Debug Instance when the Chrome window is open

Reproduisez l’échec en suivant les étapes indiquées avec React, Node.js, Chrome et Eclipse, puis retracez le chemin de lancement via ChromeAttachDebugDelegate.launch et l’initialisation du débogage DSP affichée dans la stack trace. Comparez le comportement lorsque toutes les fenêtres Chrome sont fermées et lorsqu’une fenêtre Chrome existe déjà ; c’est terminé lorsque l’URL localhost configurée est trouvée et que le débogage démarre sans le timeout about:blank.

When the Chrome window is open and I try to run Chrome Debug Instance, I get the error:

!ENTRY org.eclipse.wildwebdeveloper 4 0 2022-10-27 11:11:14.029
!MESSAGE Unexpected exception
!STACK 1
org.eclipse.debug.core.DebugException: Unexpected exception
	at org.eclipse.lsp4e.debug.debugmodel.DSPDebugElement.monitorGet(DSPDebugElement.java:100)
	at org.eclipse.lsp4e.debug.debugmodel.DSPDebugTarget.initialize(DSPDebugTarget.java:185)
	at org.eclipse.lsp4e.debug.launcher.DSPLaunchDelegate.createDebugTarget(DSPLaunchDelegate.java:370)
	at org.eclipse.lsp4e.debug.launcher.DSPLaunchDelegate.launch(DSPLaunchDelegate.java:350)
	at org.eclipse.wildwebdeveloper.debug.AbstractHTMLDebugDelegate.launchWithParameters(AbstractHTMLDebugDelegate.java:44)
	at org.eclipse.wildwebdeveloper.debug.chrome.ChromeAttachDebugDelegate.launch(ChromeAttachDebugDelegate.java:43)
	at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:806)
	at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:717)
	at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1021)
	at org.eclipse.debug.internal.ui.DebugUIPlugin$2.run(DebugUIPlugin.java:1224)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.util.concurrent.ExecutionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Cannot connect to runtime process, timeout after 10000 ms - (reason: Can't find a valid target that matches: about:blank. Available pages: ["file:///home/s052328876/my-app/node_modules/react-scripts/scripts/start.js"]).
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2096)
	at org.eclipse.lsp4e.debug.debugmodel.DSPDebugElement.monitorGet(DSPDebugElement.java:86)
	... 10 more
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Cannot connect to runtime process, timeout after 10000 ms - (reason: Can't find a valid target that matches: about:blank. Available pages: ["file:///home/s052328876/my-app/node_modules/react-scripts/scripts/start.js"]).
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:209)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:193)
	at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:577)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1589)
!SUBENTRY 1 org.eclipse.lsp4e.debug 4 5010 2022-10-27 11:11:14.030
!MESSAGE Unexpected exception
!STACK 0
java.util.concurrent.ExecutionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Cannot connect to runtime process, timeout after 10000 ms - (reason: Can't find a valid target that matches: about:blank. Available pages: ["file:///home/s052328876/my-app/node_modules/react-scripts/scripts/start.js"]).
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2096)
	at org.eclipse.lsp4e.debug.debugmodel.DSPDebugElement.monitorGet(DSPDebugElement.java:86)
	at org.eclipse.lsp4e.debug.debugmodel.DSPDebugTarget.initialize(DSPDebugTarget.java:185)
	at org.eclipse.lsp4e.debug.launcher.DSPLaunchDelegate.createDebugTarget(DSPLaunchDelegate.java:370)
	at org.eclipse.lsp4e.debug.launcher.DSPLaunchDelegate.launch(DSPLaunchDelegate.java:350)
	at org.eclipse.wildwebdeveloper.debug.AbstractHTMLDebugDelegate.launchWithParameters(AbstractHTMLDebugDelegate.java:44)
	at org.eclipse.wildwebdeveloper.debug.chrome.ChromeAttachDebugDelegate.launch(ChromeAttachDebugDelegate.java:43)
	at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:806)
	at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:717)
	at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1021)
	at org.eclipse.debug.internal.ui.DebugUIPlugin$2.run(DebugUIPlugin.java:1224)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Cannot connect to runtime process, timeout after 10000 ms - (reason: Can't find a valid target that matches: about:blank. Available pages: ["file:///home/s052328876/my-app/node_modules/react-scripts/scripts/start.js"]).
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:209)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:193)
	at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.consume(ReflectiveMessageValidator.java:68)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:194)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:94)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:577)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1589)

The application does not appear, and a blank tab is loaded, at the url "about:blank".

Steps to reproduce:

1. Create a react application:

npx create-react-app my-app
cd my-app

2. Create an Eclipse project in my-app folder.
3. Edit the file my-app/package.json adding the following line to the scripts key:

    "debug": "react-scripts --inspect=127.0.0.1:9222 start"

4. Start the application with the command:

npm run debug

5. Access the Eclipse menu:
   Run -> Debug Configurations -> Running Chrome Debug Instance

And create a new configuration.
6. Fill the URL field with: http://localhost:3000
7. Click in Apply
8. Click in Debug

When all Chrome windows are closed, the issue does not occur. However, it is bad to have to close Chrome every time we go to debug.

Refs:

https://github.com/Microsoft/vscode-chrome-debug-core/issues/324
https://stackoverflow.com/questions/45592581/cannot-debug-in-vs-code-by-attaching-to-chrome

Environment

Eclipse 4.25.0
Java 18
Ubuntu 22
node 16.17.0
Chrome 105
wildweb 0.15.1