Strange error port out of range:-1 for language server

[slavap]

Just upgraded from 4.20 to 4.20.1 and now getting the following error on Eclipse STS startup:

17:05:52.189 [Project-Reconciler-1] ERROR o.s.i.v.b.v.g.ProjectVersionDiagnosticProvider - 
java.lang.IllegalArgumentException: port out of range:-1
	at java.base/java.net.InetSocketAddress.checkPort(InetSocketAddress.java:152)
	at java.base/java.net.InetSocketAddress.<init>(InetSocketAddress.java:233)
	at org.springframework.ide.vscode.boot.app.RestTemplateFactory.createRestTemplate(RestTemplateFactory.java:53)
	at org.springframework.ide.vscode.boot.validation.generations.SpringProjectsClient.get(SpringProjectsClient.java:78)
	at org.springframework.ide.vscode.boot.validation.generations.SpringProjectsClient.fromEmbedded(SpringProjectsClient.java:57)
	at org.springframework.ide.vscode.boot.validation.generations.SpringProjectsClient.getSpringProjects(SpringProjectsClient.java:44)
	at org.springframework.ide.vscode.boot.validation.generations.SpringIoProjectsProvider.cache(SpringIoProjectsProvider.java:84)
	at org.springframework.ide.vscode.boot.validation.generations.SpringIoProjectsProvider.getProject(SpringIoProjectsProvider.java:75)
	at org.springframework.ide.vscode.boot.validation.generations.UpdateBootVersion.validate(UpdateBootVersion.java:49)
	at org.springframework.ide.vscode.boot.validation.generations.ProjectVersionDiagnosticProvider.getDiagnostics(ProjectVersionDiagnosticProvider.java:60)
	at org.springframework.ide.vscode.boot.validation.BootVersionValidationEngine.reconcile(BootVersionValidationEngine.java:50)
	at org.springframework.ide.vscode.boot.common.ProjectReconcileScheduler.lambda$scheduleValidation$0(ProjectReconcileScheduler.java:85)
	at java.base/java.util.Optional.ifPresent(Optional.java:178)
	at org.springframework.ide.vscode.boot.common.ProjectReconcileScheduler.lambda$scheduleValidation$1(ProjectReconcileScheduler.java:83)
	at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onNext(MonoPeekTerminal.java:171)
	at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539)
	at reactor.core.publisher.MonoPublishOn$PublishOnSubscriber.run(MonoPublishOn.java:181)
	at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:68)
	at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:28)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)

[BoykoAlex]

Open Preferences. General -> Network Connections. What do you see on that page? Likely you have a proxy setup without the port value...
Perhaps there is an assumption for the default port value if it is not specified... and this would be a bug on the sts spring boot ls. Try specifying the port explicitly. If you don't use proxy then switch the Active Provider to Direct.

[slavap]

@BoykoAlex Thank you, switching to Direct resolved the problem, I have no proxy, and for some reason it was Native there (though I never changed it, so probably default of some kind).

[BoykoAlex]

Hmm... maybe there is a bug in STS here. I cannot really select Native on my mac as it always switches to Direct on restart. On Windows, however, I recall i had to switch it to Direct as well since it was showing Native and a similar issue with a port... At the time I thought i had Native as the set value in the workspace... I'll give it another try tomorrow on Windows since there might be a bug...

[slavap]

@BoykoAlex yes, I'm on Windows 10 x64

[martinlippert]

Re-opening this for a long as there are some ongoing investigations...

[BoykoAlex]

Fixed with c30c2a6. Native setting without URL on Win sends empty url with no host and port to the LS config