EagerFormParsingHandler formParsingHandler = new EagerFormParsingHandler();
            formParsingHandler.setNext(handler);

00:14:41,251 [XNIO-1 I/O-2] ERROR io.undertow.request - UT005071: Undertow request failed HttpServerExchange{ POST /ref/ request {Connection=[Keep-Alive], Content-Length=[4512], Content-Type=[application/x-www-form-urlencoded; charset=UTF-8], User-Agent=[Apache-HttpAsyncClient/4.0.2 (java 1.5)], Host=[host]} response {}}
java.lang.RuntimeException: resumed and dispatched
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:207)
        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:802)
        at io.undertow.util.SameThreadExecutor.execute(SameThreadExecutor.java:35)
        at io.undertow.server.HttpServerExchange.dispatch(HttpServerExchange.java:787)
        at io.undertow.server.HttpServerExchange.dispatch(HttpServerExchange.java:805)
        at io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.handleEvent(FormEncodedDataDefinition.java:116)
        at io.undertow.server.handlers.form.FormEncodedDataDefinition$FormEncodedDataParser.handleEvent(FormEncodedDataDefinition.java:89)
        at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
        at io.undertow.channels.DetachableStreamSourceChannel$SetterDelegatingListener.handleEvent(DetachableStreamSourceChannel.java:231)
        at io.undertow.channels.DetachableStreamSourceChannel$SetterDelegatingListener.handleEvent(DetachableStreamSourceChannel.java:218)
        at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
        at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
        at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88)
        at org.xnio.nio.WorkerThread.run(WorkerThread.java:559)
00:14:41,251 [XNIO-1 task-3] ERROR io.undertow.request - UT005071: Undertow request failed HttpServerExchange{ POST /ref/ request {Connection=[Keep-Alive], Content-Length=[4512], Content-Type=[application/x-www-form-urlencoded; charset=UTF-8], User-Agent=[Apache-HttpAsyncClient/4.0.2 (java 1.5)], Host=[host]} response {}}
java.lang.RuntimeException: resumed and dispatched
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:207)
        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:802)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)