https://issues.jboss.org/browse/UNDERTOW-810 I have fixed this upstream. Stuart On Mon, Aug 29, 2016 at 5:19 PM, Martin Andersson <martin.andersson(a)purplescout.se&gt; wrote: > Hi all, > > I've seem to have hit a bug in undertow when combining proxying and gzip. > > I'm trying to use undertow as a reverse-proxy and also compressing the > result when clients support it. Undertow-code below. > > * Proxying without compressing works fine (curl -v localhost:8099/proxy) > * Compressing content that is not proxied works fine (curl -v --compress > localhost:8099/local) > * Proxy and compression just hangs. Not even headers are received (curl -v > --compress localhost:8099/proxy) > > Trying to debug what's going on I found that the GzipStreamSinkConduit > receives all content but is never flushed. > > The call sequence for GzipStreamSinkConduit for proxied content is: > write(ByteBuffer src) - all context from the proxied app is written. > wakeupWrites() - which basically does nothing. Ends up in > DeflatingStreamSinkConduit.queueWriteListener() which calls any > WriteReadyHandlers but there are none. > > Any clues? > > My code to setup undertow: > > final PathHandler pathHandler = Handlers.path(); > pathHandler.addExactPath("/local", new HttpHandler() { > @Override > public void handleRequest(HttpServerExchange exchange) throws Exception { > exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain"); > exchange.getResponseSender().send("Hello World"); } > }); > pathHandler.addPrefixPath("/proxy", > new ProxyHandler( > new SimpleProxyClientProvider(new URI("http://localhost:8060/menu")), > ResponseCodeHandler.HANDLE_404)); > > final EncodingHandler handler = > new EncodingHandler(pathHandler, new ContentEncodingRepository() > .addEncodingHandler("gzip", > new GzipEncodingProvider(), 50, > Predicates.truePredicate())); > > Undertow.builder() > .addHttpListener(8099, "0.0.0.0") > .setHandler(handler) > .build().start(); > > -- > Br, > Martin Andersson > Purple Scout AB > +46 732 05 14 01 > > _______________________________________________ > undertow-dev mailing list > undertow-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/undertow-dev