[undertow-dev] Gzip and Proxy

[Martin Andersson]

Nice, thanks!

On Tue, Aug 30, 2016 at 2:51 AM, Stuart Douglas <sdouglas at redhat.com> wrote:

> 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 at purplescout.se> 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 at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/undertow-dev
>



-- 
Br,
Martin Andersson
Purple Scout AB
+46 732 05 14 01
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