connecting to amq with websockets (port 61614) throws java.lang.NoClassDefFoundError: org/eclipse/jetty/websocket/server/internal/CompletedUpgradeRequest on server

[nathandeklepper]

On 6.3.x websocket connections fail with the exception pasted below.

I've tested this against 6.1.x, and 6.2.x where it works correctly.

Steps to reproduce...
Download activemq 6.3.1 tar.gz from amq classic downloads page.
Uncomment ws and stomp connectors in conf/activemq.xml
Connect with a ws/stomp client on port 61614 (should be reproducible with any protocol over ws).

The issue can also be produced through a local reverse proxy terminating tls, in which case the client talks wss on port 443.

java.lang.NoClassDefFoundError: org/eclipse/jetty/websocket/server/internal/CompletedUpgradeRequest
at org.eclipse.jetty.ee11.websocket.server.internal.JettyServerFrameHandlerFactory.newFrameHandler(JettyServerFrameHandlerFactory.java:45)
at org.eclipse.jetty.websocket.core.server.internal.CreatorNegotiator.negotiate(CreatorNegotiator.java:70)
at org.eclipse.jetty.websocket.core.server.internal.AbstractHandshaker.upgradeRequest(AbstractHandshaker.java:70)
at org.eclipse.jetty.websocket.core.server.internal.HandshakerSelector.upgradeRequest(HandshakerSelector.java:45)
at org.eclipse.jetty.websocket.core.server.WebSocketMappings.upgrade(WebSocketMappings.java:296)
at org.eclipse.jetty.websocket.core.server.WebSocketMappings.upgrade(WebSocketMappings.java:264)
at org.eclipse.jetty.ee11.websocket.server.JettyWebSocketServlet.service(JettyWebSocketServlet.java:210)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.eclipse.jetty.ee11.servlet.ServletHolder.handle(ServletHolder.java:754)
at org.eclipse.jetty.ee11.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1688)
at org.eclipse.jetty.ee11.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1602)
at org.eclipse.jetty.ee11.servlet.ServletChannel.dispatch(ServletChannel.java:871)
at org.eclipse.jetty.ee11.servlet.ServletChannel.handle(ServletChannel.java:449)
at org.eclipse.jetty.ee11.servlet.ServletHandler.handle(ServletHandler.java:469)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:546)
at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1253)
at org.eclipse.jetty.server.Server.handle(Server.java:197)
at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:804)
at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:420)
at org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1790)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1240)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194)
at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.websocket.server.internal.CompletedUpgradeRequest
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)

I have a Java / spring test client that logs the following output, I'm not sure how helpful this will be though as I expect the issue is dependency version related on the server...

15:39:10.210 [SimpleAsyncTaskExecutor-1] TRACE o.s.w.s.c.s.StandardWebSocketClient - Handshake request headers: {Connection=[Upgrade], Host=[localhost:61614], Origin=[http://localhost:61614], Sec-WebSocket-Key=[OzVNARaLftY4WcJltC+eRA==], Sec-WebSocket-Protocol=[v13.stomp, v12.stomp, v11.stomp, stomp], Sec-WebSocket-Version=[13], Upgrade=[websocket]}
15:39:10.385 [Grizzly(1)] TRACE o.s.w.s.c.s.StandardWebSocketClient - Handshake response headers: {cache-control=[must-revalidate, no-cache, no-store], content-length=[613], content-type=[text/html;charset=iso-8859-1], date=[Tue, 11 Aug 2026 05:39:10 GMT]}
15:39:10.386 [SimpleAsyncTaskExecutor-1] DEBUG o.s.m.simp.stomp.DefaultStompSession - Failed to connect session id=9b6992f9-a8c8-b6e0-30a0-f70ecdd553ca
java.util.concurrent.CompletionException: org.glassfish.tyrus.client.exception.DeploymentHandshakeException: Handshake error.
at org.springframework.util.concurrent.FutureUtils.lambda$toSupplier$0(FutureUtils.java:78)
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: org.glassfish.tyrus.client.exception.DeploymentHandshakeException: Handshake error.
at org.glassfish.tyrus.client.exception.Exceptions.deploymentException(Exceptions.java:38)
at org.glassfish.tyrus.client.ClientManager$3$1.run(ClientManager.java:622)
at org.glassfish.tyrus.client.ClientManager$3.run(ClientManager.java:657)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
at org.glassfish.tyrus.client.ClientManager$SameThreadExecutorService.execute(ClientManager.java:810)
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:123)
at org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:460)
at org.glassfish.tyrus.client.ClientManager.lambda$connectToServer$2(ClientManager.java:313)
at org.glassfish.tyrus.client.ClientManager.tryCatchInterruptedExecutionEx(ClientManager.java:324)
at org.glassfish.tyrus.client.ClientManager.connectToServer(ClientManager.java:313)
at org.springframework.web.socket.client.standard.StandardWebSocketClient.lambda$executeInternal$0(StandardWebSocketClient.java:167)
at org.springframework.util.concurrent.FutureUtils.lambda$toSupplier$0(FutureUtils.java:74)
... 2 common frames omitted
Caused by: org.glassfish.tyrus.core.HandshakeException: Response code was not 101: 500.

[mattrpav]

Please share a test project that can reproduce the error.