eclipse-wildwebdeveloper / eclipse-wildwebdeveloper/wildwebdeveloper
Error in Running Chrome Debug Instance when the Chrome window is open
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- Java
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Description
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:
- Create a react application:
npx create-react-app my-app
cd my-app
- Create an Eclipse project in
my-appfolder. - Edit the file
my-app/package.jsonadding the following line to thescriptskey:
"debug": "react-scripts --inspect=127.0.0.1:9222 start"
- Start the application with the command:
npm run debug
- 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
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the failure using the listed React, Node.js, Chrome, and Eclipse steps, then trace the launch path through ChromeAttachDebugDelegate.launch and the DSP debug initialization shown in the stack trace. Compare behavior with all Chrome windows closed and with an existing Chrome window; done means the configured localhost URL is found and debugging starts without the about:blank timeout.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, javascript, node.js, react
- Domain
- devtools, web-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100