Attribute max-connections has wrong error message ------------------------------------------------- Key: WFLY-7494 URL: https://issues.jboss.org/browse/WFLY-7494 Project: WildFly Issue Type: Bug Components: Web (Undertow) Reporter: Stuart Douglas Assignee: Stuart Douglas Error message max-connections is not saying what went wrong, other listeners will have probably same issue {noformat} [standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-connections, value=-20) {noformat} causes exception {noformat} 08:54:13,387 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.undertow.listener.default: org.jboss.msc.service.StartException in service jboss.undertow.listener.default: Failed to start service at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1919) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.IllegalArgumentException: High water must be greater than 0 at org.xnio.nio.QueuedNioTcpServer.badHighWater(QueuedNioTcpServer.java:236) at org.xnio.nio.QueuedNioTcpServer.<init>(QueuedNioTcpServer.java:189) at org.xnio.nio.NioXnioWorker.createTcpConnectionServer(NioXnioWorker.java:200) at org.xnio.XnioWorker.createStreamConnectionServer(XnioWorker.java:243) at org.wildfly.extension.undertow.HttpListenerService.startListening(HttpListenerService.java:126) at org.wildfly.extension.undertow.ListenerService.start(ListenerService.java:167) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1963) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1896) ... 3 more {noformat}