[undertow-dev] req.authenticate() problems 1.1.0

When upgrading from Undertow 1.0.15 to 1.1.0 our HttpServleRequest.authenticate() unit test is failing. An exception is being thrown in HttpServletRequestImpl.authenticate() line 416. Our auth mechanism is being called correctly. It sets the status code (302) and the Location header within a challenge object. It looks like exchange.isResponseStarted() is returning false even though my challenge object is setting up the resposne correctly. Am I supposed to call exchange.endExchange() or something within my Challenge object? I tried doing that, but Undertow is now spitting out exception messages: java.lang.IllegalStateException: UT000002: The response has already been started at io.undertow.server.HttpServerExchange.setResponseCode(HttpServerExchange.java:1246) at io.undertow.security.impl.SecurityContextImpl$ChallengeSender.transition(SecurityContextImpl.java:355) at io.undertow.security.impl.SecurityContextImpl$ChallengeSender.transition(SecurityContextImpl.java:349) at io.undertow.security.impl.SecurityContextImpl$ChallengeSender.transition(SecurityContextImpl.java:349) at io.undertow.security.impl.SecurityContextImpl$ChallengeSender.access$300(SecurityContextImpl.java:314) at io.undertow.security.impl.SecurityContextImpl.sendChallenges(SecurityContextImpl.java:135) at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:109) at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:99) at io.undertow.servlet.spec.HttpServletRequestImpl.authenticate(HttpServletRequestImpl.java:404) -- Bill Burke JBoss, a division of Red Hat http://bill.burkecentral.com