Re: [undertow-dev] Changing headers on proxy response

You can set them in a response wrapper (io.undertow.server.HttpServerExchange#addResponseWrapper) and they should not be overriden, although this is not ideal. If you file a JIRA I will look at adding better support for this into the proxy. Stuart ----- Original Message ----- > From: "Jeff Williams" <jeffw(a)wherethebitsroam.com&gt; > To: undertow-dev(a)lists.jboss.org > Sent: Saturday, 1 November, 2014 12:43:38 AM > Subject: [undertow-dev] Changing headers on proxy response > > Hi, > > I am currently using a customer handler wrapping the proxy handler. I want to > set some response headers from my handler, but if they exist in the response > from the proxy's backend, they are overridden. Example code: > > Undertow.builder() > .addHttpListener(8080, "localhost") > .setHandler(new MyHandler(new ProxyHandler(proxy, 30000, ResponseCodeHandler. > HANDLE_404 ))).build(); > > class MyHandler extends HttpHandler { > private static final HttpString ACCESS_CONTROL_EXPOSE_HEADERS = new > HttpString("Access-Control-Expose-Headers"); > private HTTPHandler next; > public MyHandler(HttpHandler next) { > this.next = next; > } > p ublic void handleRequest(HttpServerExchange exchange ) throws Exception { > exchange .getResponseHeaders().put( ACCESS_CONTROL_EXPOSE_HEADERS , " new > ACEH" ); > } > } > > The problem here is that the backend server responds with an > Access-Control-Expose-Headers header and that replaces the one I set in > MyHandler. > > Is there any way I can change headers after proxy has received the response > from backend and before it starts sending the response to the client? > > Regards, > Jeff > > > _______________________________________________ > undertow-dev mailing list > undertow-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/undertow-dev