October 2017 - undertow-dev - Jboss List Archives

by Thomas Segismont

Hi, Openshift Origin uses Hawkular Metrics to store node and container data. In this scenario, Hawkular Metrics calls the Kubernetes master server over HTTPS to validate the client identity. This is implemented with Undertow Client, as part of a ServletExtension (inside Wildfly 10) [1]. Works fine in development and testing. Now the Openshit team sees errors in the logs [2][3]. I couldn't reproduce yet. Errors come in pair, first the "UT005001: An exception occurred processing the request: java.lang.IllegalStateException: XNIO000017: Buffer was already freed", and just after "XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException". Does that ring a bell? I haven't been able to find a starting point by looking into the source the code. Thanks -- Thomas Segismont JBoss ON Engineering Team [1] https://git.io/vrNyP [2] https://issues.jboss.org/browse/HWKMETRICS-408 [3] https://issues.jboss.org/secure/attachment/12405779/hawkular.log

8 months, 2 weeks

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Correctly shutting down a websocket handler

by Robin Anil

When a client disconnects, I see that onClose is not being fired. The only way this seems to be firing if client sents a close frame. Is there any way to detect disconnection and immediately close all the opened resources. Robin Robin Anil | Software Engineer

3 years, 1 month

5
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WildFly 8.2.1 EJB Security and Custom Auth Mechanism.

by Nick Stuart

Hello all, having an issue with a custom io.undertow.security.api.AuthenticationMechanism implementation and EJB security on WildFly 8.2 and hoping someone can think of a work around. Basic problem, user is authenticated via the AuthenticationMechanism, and the web context sees the user just fine and their roles, but when we get to the EJB calls the user is seen as 'anonymous'. The mechanism calls: sc.authenticationComplete(ac, mechanismName, true); and returns: AuthenticationMechanismOutcome.AUTHENTICATED; The resources I'm calling are configured as being protected through the web.xml and all of that is working as expected. Another note, I am able to get this to work in WildFly 10.1, but only with (what I think is) a bit of hack. The following code is required for EJB Security to work: sc.authenticationComplete(ac, mechanismName, true); sc.login(ac.getUsername(), ""); sc.authenticate(); This same code in 8.2 causes an infinite recursion issue. Even working around that (with another hack) this still doesn't work. Any ideas would be greatly appreciated. Upgrading is going to be considered a worst case scenario right now, and would like avoid it right now if at all possible. Thanks for the help! -Nick

9 years

4
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Request and response conduits

by paroczizs .

Hi Undertow-dev, is it possible to identify the last byte(s) of the request and response streams in the conduits? Regards, Zsolt <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_camp...> Mentes a vírusoktól. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_camp...> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

9 years

2
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Why are ioThreads capped at a max of 2 by default?

by Mario Carbajal

In the undertow builder there's this line: ioThreads = Math.max(Runtime.getRuntime().availableProcessors(), 2); Why the cap? is it not recommended to go over 2?

9 years

3
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Resource handler and Webjars

by Ove Ranheim

Hi, How do I register a resource handler for webjars. E.g. https://github.com/webjars/bootstrap-sass <https://github.com/webjars/bootstrap-sass> Regards, Ove

9 years

3
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Reverse proxy with https connections

by Steve Hu

I am extending the ReverseProxyServer example to connect down stream servers that listen to https and got the following error on the proxy server. After debugging into it, I realized that the ssl is null when UndertowClient tries to create connection to the downstream server. I am wondering who is responsible for creating this ssl object. Where the certificates should be loaded? Thanks, Steve proxy_1 | 17:37:12.430 [XNIO-1 I/O-4] DEBUG io.undertow.request failed - Failed to connect proxy_1 | java.io.IOException: UT000065: SSL must be specified to connect to a https URL proxy_1 | at io.undertow.client.http.HttpClientProvider.connect(HttpClientProvider.java:94) proxy_1 | at io.undertow.client.UndertowClient.connect(UndertowClient.java:157) proxy_1 | at io.undertow.server.handlers.proxy.ProxyConnectionPool.openConnection(ProxyConnectionPool.java:273) proxy_1 | at io.undertow.server.handlers.proxy.ProxyConnectionPool.connect(ProxyConnectionPool.java:527) proxy_1 | at io.undertow.server.handlers.proxy.LoadBalancingProxyClient.getConnection(LoadBalancingProxyClient.java:301) proxy_1 | at io.undertow.server.handlers.proxy.ProxyHandler$ProxyClientHandler.run(ProxyHandler.java:292) proxy_1 | at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:582) proxy_1 | at org.xnio.nio.WorkerThread.run(WorkerThread.java:466)

9 years

3
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Using Async Api inside HttpHandler

by Ruslan Ibragimov

Hello Team, I there way to execute some code asynchronously in handler and fill response in callback? I started with straightforward code like: HttpHandler asyncHandler = (HttpServerExchange exchange) -> { client.execute(new HttpGet("https://newton.now.sh/"), new FutureCallback<HttpResponse>() { @Override public void completed(HttpResponse result) { System.out.println("Received."); exchange.getResponseSender().send("Received."); } @Override public void failed(Exception ex) { System.out.println("Failed."); exchange.getResponseSender().send("Failed."); } @Override public void cancelled() { System.out.println("Cancelled."); exchange.getResponseSender().send("Cancelled."); } }); }; When I run this code *completed* method called, but nothing written in response (since exchange already end) So I googled my question and found SO answer, and I tried to dispatch exchange as described here: https://stackoverflow.com/a/25223070/1538877 With no luck too. Then I go to Request Lifecycle section of the docs (minor typo fix here: https://github.com/undertow-io/undertow-docs/pull/9) http://undertow.io/undertow-docs/undertow-docs-1.4.0/index.html#undertow-... and tried approach with dispatching current handler with no luck too. (But found that HttpHandlers class renamed too Connectors, fix: https://github.com/undertow-io/undertow-docs/pull/8) So my question is how to do async tasks in handlers. My attempts as single file: https://gist.github.com/IRus/de8a23396ccd6b59df9267d4124393db (requires http://mvnrepository.com/artifact/org.apache.httpcomponents/httpasyncclie... ) -- Best regards, Ibragimov Ruslan http://ibragimov.by/ http://heap.by/

9 years

2
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Java 9: sun.misc.Cleaner not found

by Hicks, Matt

I just updated to Java 9 and have started getting the following exception: exampleJVM[ERROR] Oct 09, 2017 11:45:35 AM io.undertow.server.DirectByteBufferDeallocator <clinit> exampleJVM[ERROR] ERROR: UT005091: Failed to initialize DirectByteBufferDeallocator exampleJVM[ERROR] java.lang.ClassNotFoundException: sun.misc.Cleaner exampleJVM[ERROR] at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) exampleJVM[ERROR] at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185) exampleJVM[ERROR] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496) exampleJVM[ERROR] at java.base/java.lang.Class.forName0(Native Method) exampleJVM[ERROR] at java.base/java.lang.Class.forName(Class.java:292) exampleJVM[ERROR] at io.undertow.server.DirectByteBufferDeallocator.<clinit>(DirectByteBufferDeallocator.java:23) exampleJVM[ERROR] at io.undertow.server.DefaultByteBufferPool.queueIfUnderMax(DefaultByteBufferPool.java:207) exampleJVM[ERROR] at io.undertow.server.DefaultByteBufferPool.freeInternal(DefaultByteBufferPool.java:199) exampleJVM[ERROR] at io.undertow.server.DefaultByteBufferPool.access$200(DefaultByteBufferPool.java:41) exampleJVM[ERROR] at io.undertow.server.DefaultByteBufferPool$DefaultPooledBuffer.close(DefaultByteBufferPool.java:269) exampleJVM[ERROR] at io.undertow.conduits.DeflatingStreamSinkConduit.deflateData(DeflatingStreamSinkConduit.java:495) exampleJVM[ERROR] at io.undertow.conduits.DeflatingStreamSinkConduit.write(DeflatingStreamSinkConduit.java:117) exampleJVM[ERROR] at io.undertow.conduits.DeflatingStreamSinkConduit.write(DeflatingStreamSinkConduit.java:138) exampleJVM[ERROR] at org.xnio.conduits.ConduitStreamSinkChannel.write(ConduitStreamSinkChannel.java:154) exampleJVM[ERROR] at io.undertow.channels.DetachableStreamSinkChannel.write(DetachableStreamSinkChannel.java:187) exampleJVM[ERROR] at io.undertow.server.HttpServerExchange$WriteDispatchChannel.write(HttpServerExchange.java:2046) exampleJVM[ERROR] at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:219) exampleJVM[ERROR] at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:310) exampleJVM[ERROR] at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:282) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation$.handleStandard(UndertowServerImplementation.scala:250) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation$.response(UndertowServerImplementation.scala:169) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation.$anonfun$requestHandler$1(UndertowServerImplementation.scala:100) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation.$anonfun$requestHandler$1$adapted(UndertowServerImplementation.scala:97) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation$.handle$1(UndertowServerImplementation.scala:126) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation$.processRequest(UndertowServerImplementation.scala:162) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation.requestHandler(UndertowServerImplementation.scala:97) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation.$anonfun$handleRequest$1(UndertowServerImplementation.scala:90) exampleJVM[ERROR] at io.youi.ErrorSupport.errorSupport(ErrorSupport.scala:11) exampleJVM[ERROR] at io.youi.ErrorSupport.errorSupport$(ErrorSupport.scala:10) exampleJVM[ERROR] at io.youi.example.ServerExampleApplication$.errorSupport(ServerExampleApplication.scala:8) exampleJVM[ERROR] at io.youi.server.UndertowServerImplementation.handleRequest(UndertowServerImplementation.scala:74) exampleJVM[ERROR] at io.undertow.server.handlers.encoding.EncodingHandler.handleRequest(EncodingHandler.java:72) exampleJVM[ERROR] at io.undertow.server.Connectors.executeRootHandler(Connectors.java:332) exampleJVM[ERROR] at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:254) exampleJVM[ERROR] at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136) exampleJVM[ERROR] at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:151) exampleJVM[ERROR] at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:92) exampleJVM[ERROR] at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:51) exampleJVM[ERROR] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) exampleJVM[ERROR] at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291) exampleJVM[ERROR] at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286) exampleJVM[ERROR] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) exampleJVM[ERROR] at org.xnio.nio.QueuedNioTcpServer$1.run(QueuedNioTcpServer.java:129) exampleJVM[ERROR] at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:582) exampleJVM[ERROR] at org.xnio.nio.WorkerThread.run(WorkerThread.java:466)

9 years, 1 month

3
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Expose metrics in Spring Boot environment

by Richard Fuller

Hello, We have recently moved from Weblogic to Spring Boot and decided to use Undertow instead of Tomcat. Everything seems to be working great but would like to be able to see metrics such as threads used in pool, max threads in pool, current requests, etc. It does not appear these are exposed through JMX. Is there a way to get metrics such as these? Thanks in advance, Wayne

9 years, 1 month

2
1
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undertow-dev October 2017