Unable to connect to SonarCloud: No such host is known (sonarcloud.io)

[Oolie (Maciej)]

Hi! Version 3.1.0 doesn’t work for me, but it seems that some other stuff might be the reason:
Caused by: java.net.UnknownHostException: No such host is known (sonarcloud.io)
Here is the full stacktrace:

[Error - 18:58:34.142] Error updating the local storage of the connection with id '<default>'
[Error - 18:58:34.144] java.lang.IllegalStateException: Cannot check server version and status
	at org.sonarsource.sonarlint.core.container.connected.validate.ServerVersionAndStatusChecker.checkVersionAndStatus(ServerVersionAndStatusChecker.java:51)
	at org.sonarsource.sonarlint.core.container.connected.update.perform.GlobalStorageUpdateExecutor.update(GlobalStorageUpdateExecutor.java:90)
	at org.sonarsource.sonarlint.core.container.connected.ConnectedContainer.update(ConnectedContainer.java:133)
	at org.sonarsource.sonarlint.core.ConnectedSonarLintEngineImpl.lambda$update$2(ConnectedSonarLintEngineImpl.java:182)
	at org.sonarsource.sonarlint.core.ConnectedSonarLintEngineImpl.runInConnectedContainer(ConnectedSonarLintEngineImpl.java:331)
	at org.sonarsource.sonarlint.core.ConnectedSonarLintEngineImpl.lambda$update$3(ConnectedSonarLintEngineImpl.java:182)
	at org.sonarsource.sonarlint.core.AbstractSonarLintEngine.withRwLock(AbstractSonarLintEngine.java:109)
	at org.sonarsource.sonarlint.core.ConnectedSonarLintEngineImpl.update(ConnectedSonarLintEngineImpl.java:177)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.updateGlobalStorageAndLogResults(ProjectBindingManager.java:513)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.createConnectedEngineAndUpdateIfNeeded(ProjectBindingManager.java:264)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.lambda$getOrCreateConnectedEngine$5(ProjectBindingManager.java:242)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.getOrCreateConnectedEngine(ProjectBindingManager.java:241)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.computeProjectBinding(ProjectBindingManager.java:210)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.lambda$getBinding$0(ProjectBindingManager.java:157)
	at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.getBinding(ProjectBindingManager.java:150)
	at org.sonarsource.sonarlint.ls.connected.ProjectBindingManager.getBinding(ProjectBindingManager.java:145)
	at org.sonarsource.sonarlint.ls.CommandManager.computeCodeActions(CommandManager.java:115)
	at org.sonarsource.sonarlint.ls.SonarLintLanguageServer.lambda$codeAction$3(SonarLintLanguageServer.java:273)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
Caused by: java.net.UnknownHostException: No such host is known (sonarcloud.io)
	at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:933)
	at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1519)
	at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:852)
	at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1509)
	at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1367)
	at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1301)
	at org.apache.hc.client5.http.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:43)
	at org.apache.hc.client5.http.impl.nio.MultihomeIOSessionRequester.connect(MultihomeIOSessionRequester.java:83)
	at org.apache.hc.client5.http.impl.nio.DefaultAsyncClientConnectionOperator.connect(DefaultAsyncClientConnectionOperator.java:80)
	at org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager.connect(PoolingAsyncClientConnectionManager.java:370)
	at org.apache.hc.client5.http.impl.async.InternalHttpAsyncExecRuntime.connectEndpoint(InternalHttpAsyncExecRuntime.java:210)
	at org.apache.hc.client5.http.impl.async.AsyncConnectExec.proceedToNextHop(AsyncConnectExec.java:196)
	at org.apache.hc.client5.http.impl.async.AsyncConnectExec.access$000(AsyncConnectExec.java:80)
	at org.apache.hc.client5.http.impl.async.AsyncConnectExec$1.completed(AsyncConnectExec.java:147)
	at org.apache.hc.client5.http.impl.async.AsyncConnectExec$1.completed(AsyncConnectExec.java:136)
	at org.apache.hc.client5.http.impl.async.InternalHttpAsyncExecRuntime$1.completed(InternalHttpAsyncExecRuntime.java:114)
	at org.apache.hc.client5.http.impl.async.InternalHttpAsyncExecRuntime$1.completed(InternalHttpAsyncExecRuntime.java:105)
	at org.apache.hc.core5.concurrent.BasicFuture.completed(BasicFuture.java:123)
	at org.apache.hc.core5.concurrent.ComplexFuture.completed(ComplexFuture.java:79)
	at org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager$1.leaseCompleted(PoolingAsyncClientConnectionManager.java:240)
	at org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager$1.completed(PoolingAsyncClientConnectionManager.java:277)
	at org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager$1.completed(PoolingAsyncClientConnectionManager.java:226)
	at org.apache.hc.core5.concurrent.BasicFuture.completed(BasicFuture.java:123)
	at org.apache.hc.core5.pool.StrictConnPool.fireCallbacks(StrictConnPool.java:399)
	at org.apache.hc.core5.pool.StrictConnPool.lease(StrictConnPool.java:215)
	at org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager.lease(PoolingAsyncClientConnectionManager.java:225)
	at org.apache.hc.client5.http.impl.async.InternalHttpAsyncExecRuntime.acquireEndpoint(InternalHttpAsyncExecRuntime.java:100)
	at org.apache.hc.client5.http.impl.async.AsyncConnectExec.execute(AsyncConnectExec.java:135)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement.execute(AsyncExecChainElement.java:54)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement$1.proceed(AsyncExecChainElement.java:62)
	at org.apache.hc.client5.http.impl.async.AsyncProtocolExec.internalExecute(AsyncProtocolExec.java:177)
	at org.apache.hc.client5.http.impl.async.AsyncProtocolExec.execute(AsyncProtocolExec.java:139)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement.execute(AsyncExecChainElement.java:54)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement$1.proceed(AsyncExecChainElement.java:62)
	at org.apache.hc.client5.http.impl.async.AsyncHttpRequestRetryExec.internalExecute(AsyncHttpRequestRetryExec.java:97)
	at org.apache.hc.client5.http.impl.async.AsyncHttpRequestRetryExec.execute(AsyncHttpRequestRetryExec.java:180)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement.execute(AsyncExecChainElement.java:54)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement$1.proceed(AsyncExecChainElement.java:62)
	at org.apache.hc.client5.http.impl.async.AsyncRedirectExec.internalExecute(AsyncRedirectExec.java:112)
	at org.apache.hc.client5.http.impl.async.AsyncRedirectExec.execute(AsyncRedirectExec.java:278)
	at org.apache.hc.client5.http.impl.async.AsyncExecChainElement.execute(AsyncExecChainElement.java:54)
	at org.apache.hc.client5.http.impl.async.InternalAbstractHttpAsyncClient.executeImmediate(InternalAbstractHttpAsyncClient.java:366)
	at org.apache.hc.client5.http.impl.async.InternalAbstractHttpAsyncClient$1.sendRequest(InternalAbstractHttpAsyncClient.java:222)
	at org.apache.hc.core5.http.nio.support.BasicRequestProducer.sendRequest(BasicRequestProducer.java:93)
	at org.apache.hc.client5.http.impl.async.InternalAbstractHttpAsyncClient.doExecute(InternalAbstractHttpAsyncClient.java:179)
	at org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:97)
	at org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:107)
	at org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:124)
	at org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:130)
	at org.sonarsource.sonarlint.ls.http.ApacheHttpClient.executeAsync(ApacheHttpClient.java:104)
	at org.sonarsource.sonarlint.ls.http.ApacheHttpClient.getAsync(ApacheHttpClient.java:71)
	at org.sonarsource.sonarlint.core.serverapi.ServerApiHelper.rawGetAsync(ServerApiHelper.java:106)
	at org.sonarsource.sonarlint.core.serverapi.ServerApiHelper.getAsync(ServerApiHelper.java:78)
	at org.sonarsource.sonarlint.core.serverapi.system.SystemApi.getStatus(SystemApi.java:41)
	at org.sonarsource.sonarlint.core.container.connected.validate.ServerVersionAndStatusChecker.checkVersionAndStatusAsync(ServerVersionAndStatusChecker.java:72)
	at org.sonarsource.sonarlint.core.container.connected.validate.ServerVersionAndStatusChecker.checkVersionAndStatusAsync(ServerVersionAndStatusChecker.java:62)
	at org.sonarsource.sonarlint.core.container.connected.validate.ServerVersionAndStatusChecker.checkVersionAndStatus(ServerVersionAndStatusChecker.java:43)

[JBL_SonarSource (Jean-Baptiste Lievremont)]

Hello, thanks for reporting this!

This looks to me like a domain name resolution issue. For some reason, it seems that the HTTP client is trying to resolve sonarcloud.io's IPv6 address, and as far as I can tell it is currently only resolvable on IPv4:

$ host -t AAAA sonarcloud.io
sonarcloud.io has no AAAA record
$ host -t A sonarcloud.io
sonarcloud.io has address 3.121.203.127
sonarcloud.io has address 3.65.212.140
sonarcloud.io has address 52.59.151.197

Which OS and JRE are you using?

[Oolie (Maciej)]

OS: Windows 10
JRE: The plugin pointed me to oracle page in order to install latest Java, so I installed JDK 17.0.1 and pointed to jdk directory in the vscode settings, as there is no longer jre folder:

{
    "sonarlint.ls.javaHome": "C:\\Program Files\\Java\\jdk-17.0.1"
}

[Oolie (Maciej)]

And one more thing to add here - I’m over VPN and corporate proxy. Could that be the issue, something related to DNS? The sonarcloud.io does work in the browser, though.

[Oolie (Maciej)]

The above issue no longer occurs with:

"sonarlint.ls.vmargs": "-Dhttp.proxySet=true -Dhttp.proxyHost=yourProxy -Dhttp.proxyPort=yourProxyPort -Dhttps.proxySet=true -Dhttps.proxyHost=yourProxy -Dhttps.proxyPort=yourProxyPort"

But this issue:

ConnectionClosedException in SonarLint VSCode when using a proxy

Hi, Sorry to bring this up again. @Julien_HENRY , could you please confirm the VM arguments to enforce the usage of the Proxy? In my company connections to sonarQube also need to go through a proxy and using the mentioned syntax, the direct connection is still tried. I believe, based on my attempts, that the syntax should be as documented for Maven: -DproxyHost=<Host> -DproxyPort=<Port>. When I configure the sonar VMARGs as mentioned below, it starts the connection via the proxy (I can confirm…

still occurs in version 3.1.0 and with proxy (did not check without it).

[JBL_SonarSource (Jean-Baptiste Lievremont)]

Thanks for the heads-up! I reopened the ConnectionClosedException issue for the next release - it’s a bit tricky to reproduce.