start application server in debug mode

• ./standalone.sh --debug
• attach debugger into eap
• debug some eap code e.g. io.undertow.util.DateUtils#getCurrentDateTime
• When "Ctrl + C" or "kill <pid>" application server is not stopped and exception is thrown e.g.

  20:17:05,038 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-6) WFLYJCA0010: Unbound data source [java:jboss/datasources/ExampleDS]
  20:17:05,051 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0019: Host default-host stopping
  20:17:05,055 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) WFLYUT0008: Undertow HTTPS listener https suspending
  20:17:05,061 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) WFLYUT0007: Undertow HTTPS listener https stopped, was bound to 127.0.0.1:8443
  20:17:05,061 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-8) WFLYJCA0019: Stopped Driver service with driver-name = h2
  20:17:05,064 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0008: Undertow HTTP listener default suspending
  20:17:05,065 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0007: Undertow HTTP listener default stopped, was bound to 127.0.0.1:8080
  20:17:05,066 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0004: Undertow 1.4.3.Final-redhat-1 stopping
  20:17:05,080 ERROR [org.xnio.listener] (default I/O-15) XNIO001007: A channel event listener threw an exception: java.util.concurrent.RejectedExecutionException: XNIO007007: Thread is terminating
  	at org.xnio.nio.WorkerThread.executeAfter(WorkerThread.java:623)
  	at io.undertow.server.protocol.ParseTimeoutUpdater.handleSchedule(ParseTimeoutUpdater.java:85)
  	at io.undertow.server.protocol.ParseTimeoutUpdater.connectionIdle(ParseTimeoutUpdater.java:64)
  	at io.undertow.server.protocol.http.HttpReadListener.newRequest(HttpReadListener.java:116)
  	at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:299)
  	at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:232)
  	at io.undertow.server.HttpServerExchange$ExchangeCompleteNextListener.proceed(HttpServerExchange.java:1825)
  	at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler$1.exchangeEvent(GlobalRequestControllerHandler.java:25)
  	at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1245)
  	at io.undertow.server.HttpServerExchange.closeAndFlushResponse(HttpServerExchange.java:1662)
  	at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1652)
  	at io.undertow.server.AbstractServerConnection$CloseSetter.handleEvent(AbstractServerConnection.java:316)
  	at io.undertow.server.AbstractServerConnection$CloseSetter.handleEvent(AbstractServerConnection.java:296)
  	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
  	at org.xnio.StreamConnection.invokeCloseListener(StreamConnection.java:80)
  	at org.xnio.Connection.writeClosed(Connection.java:117)
  	at org.xnio.nio.AbstractNioStreamConnection.writeClosed(AbstractNioStreamConnection.java:47)
  	at org.xnio.nio.NioSocketConduit.terminateWrites(NioSocketConduit.java:182)
  	at org.xnio.nio.NioSocketConduit.truncateWrites(NioSocketConduit.java:198)
  	at org.xnio.conduits.ConduitStreamSinkChannel.close(ConduitStreamSinkChannel.java:186)
  	at org.xnio.IoUtils.safeClose(IoUtils.java:152)
  	at org.xnio.conduits.WriteReadyHandler$ChannelListenerHandler.forceTermination(WriteReadyHandler.java:57)
  	at org.xnio.nio.NioSocketConduit.forceTermination(NioSocketConduit.java:108)
  	at org.xnio.nio.WorkerThread.run(WorkerThread.java:496)
  

• Server can be stopped by:
  • stopping debugging
  • kill -9 <pid>

Debugging halt jvm, so this behavior is expected. Just supress the exception, not to make uneccessary noise.

Another example of exception, achieved by breakpoint in SPNEGOAuthenticationMechanism

15:01:18,716 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-1) WFLYJCA0019: Stopped Driver service with driver-name = h2
15:01:18,716 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0008: Undertow HTTPS listener https suspending
15:01:18,719 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0007: Undertow HTTPS listener https stopped, was bound to 127.0.0.1:8443
15:01:18,716 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0008: Undertow HTTP listener default suspending
15:01:18,721 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0007: Undertow HTTP listener default stopped, was bound to 127.0.0.1:8080
15:01:18,722 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) WFLYUT0004: Undertow 1.4.0.Final stopping
15:01:18,732 ERROR [org.xnio.listener] (default I/O-14) XNIO001007: A channel event listener threw an exception: java.util.concurrent.RejectedExecutionException: XNIO007007: Thread is terminating
	at org.xnio.nio.WorkerThread.executeAfter(WorkerThread.java:623)
	at io.undertow.util.DateUtils.getCurrentDateTime(DateUtils.java:251)
	at io.undertow.util.DateUtils.addDateHeaderIfRequired(DateUtils.java:235)
	at io.undertow.server.protocol.http.HttpTransferEncoding.createSinkConduit(HttpTransferEncoding.java:203)
	at io.undertow.server.protocol.http.HttpServerConnection.getSinkConduit(HttpServerConnection.java:209)
	at io.undertow.server.HttpServerExchange.getResponseChannel(HttpServerExchange.java:1281)
	at io.undertow.servlet.spec.ServletOutputStreamImpl.close(ServletOutputStreamImpl.java:599)
	at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:478)
	at io.undertow.servlet.core.ServletBlockingHttpExchange.close(ServletBlockingHttpExchange.java:92)
	at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1581)
	at io.undertow.server.AbstractServerConnection$CloseSetter.handleEvent(AbstractServerConnection.java:316)
	at io.undertow.server.AbstractServerConnection$CloseSetter.handleEvent(AbstractServerConnection.java:296)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.StreamConnection.invokeCloseListener(StreamConnection.java:80)
	at org.xnio.Connection.writeClosed(Connection.java:117)
	at org.xnio.nio.AbstractNioStreamConnection.writeClosed(AbstractNioStreamConnection.java:47)
	at org.xnio.nio.NioSocketConduit.terminateWrites(NioSocketConduit.java:182)
	at org.xnio.nio.NioSocketConduit.truncateWrites(NioSocketConduit.java:198)
	at org.xnio.conduits.ConduitStreamSinkChannel.close(ConduitStreamSinkChannel.java:186)
	at org.xnio.IoUtils.safeClose(IoUtils.java:152)
	at org.xnio.conduits.WriteReadyHandler$ChannelListenerHandler.forceTermination(WriteReadyHandler.java:57)
	at org.xnio.nio.NioSocketConduit.forceTermination(NioSocketConduit.java:108)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:496)