Warp - The NonWrittingResponse does not override the flushBuffer() method allowing for commiting response. ---------------------------------------------------------------------------------------------------------- Key: ARQ-1320 URL: https://issues.jboss.org/browse/ARQ-1320 Project: Arquillian Issue Type: Bug Security Level: Public(Everyone can see) Components: Extension - Warp Affects Versions: warp_1.0.0.Alpha2 Reporter: Jakub Narloch Assignee: Lukáš Fryč Priority: Blocker Fix For: warp_1.0.0.Beta1 Original Estimate: 2 hours Remaining Estimate: 2 hours The flushBuffer(http://docs.oracle.com/javaee/6/api/javax/servlet/ServletResp... which causes the response to be marked as commited. and Adding afterwards any headers to the response has no effect. We should override the that method and prevent it's default behaviour. Also, it would be good idea to check the specs for any other method that could commit the message and prevent from enriching it by Warp.