[undertow-dev] ProxyHandler timeout handling

Hi, I am using a ProxyHandler with a ProxyClient from a custom handler. ... ProxyClient lbpc = getProxyClient(); ProxyHandler proxyhandler = new ProxyHandler(lbpc, requestTimeout, ResponseCodeHandler.HANDLE_404); ... It handles the timeout correctly however I can see some error after my handler, the timeout logged properly. 16:43:28,566 INFO [stdout] (default I/O-4) LWI COMPLETED 200 status 200 16:43:28,597 ERROR [io.undertow.proxy] (default I/O-4) UT005027: Timing out request to /lwi/cnr/getMsisdn 16:43:28,658 ERROR [org.xnio.listener] (default I/O-4) XNIO001007: A channel event listener threw an exception: java.lang.IllegalStateException: UT000139: Exchange already complete at io.undertow.server.HttpServerExchange.addExchangeCompleteListener(HttpServerExchange.java:916) at io.undertow.server.handlers.proxy.ProxyConnectionPool.connectionReady(ProxyConnectionPool.java:315) at io.undertow.server.handlers.proxy.ProxyConnectionPool.access$900(ProxyConnectionPool.java:58) at io.undertow.server.handlers.proxy.ProxyConnectionPool$1.completed(ProxyConnectionPool.java:278) at io.undertow.server.handlers.proxy.ProxyConnectionPool$1.completed(ProxyConnectionPool.java:265) at io.undertow.client.http.HttpClientProvider.handleConnected(HttpClientProvider.java:156) at io.undertow.client.http.HttpClientProvider.access$000(HttpClientProvider.java:51) at io.undertow.client.http.HttpClientProvider$2.handleEvent(HttpClientProvider.java:127) at io.undertow.client.http.HttpClientProvider$2.handleEvent(HttpClientProvider.java:124) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at org.xnio.nio.WorkerThread$ConnectHandle.handleReady(WorkerThread.java:326) at org.xnio.nio.WorkerThread.run(WorkerThread.java:567) Is it the normal behavior and nothing to do with it? Is there a way to catch the timeout error and give some custom response? Regards, Zsolt