Steven, Jetty GzipContentTransformer is very much just a component in what must be a bigger solution dealing with headers and lengths. For example a middle man might inflate content, examine it and then deflate it again before passing it on, so headers might not need to be adjusted. Or it might inflate/deflate content, in which case headers do need to be adjusted.
You can see what we do serverside in https://github.com/eclipse/jetty.project/blob/jetty-9.4.x/jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java#L153-L193 We use the the "incorrect" widely-accepted 'Content-Encoding' because it works better with browsers :) cheers On 4 November 2017 at 05:22, Steven Schlansker <[email protected]> wrote: > I'm trying to use the GzipContentTransformer to implement transparent > gzip-ing of our backend responses. > > It looks like the code handles the actual compression fine, but does not > handle changing the HTTP headers to match the transformed input. > Additionally, there's multiple 'styles' of transparent gzipping, the > "incorrect" widely-accepted 'Content-Encoding' and the > not-widely-supported-but-more-correct Transfer-Encoding approach. > > Once you start digging in to exactly what to do, you also have to start > munging ETags. > Then you find a long history of both nginx and mod_deflate[1] getting it > wrong... > > Does the Jetty community have an example, or any recommendations? > I looked for uses of GzipContentTransformer but didn't find any samples. > > [1] https://bz.apache.org/bugzilla/show_bug.cgi?id=39727 > > > _______________________________________________ > jetty-users mailing list > [email protected] > To change your delivery options, retrieve your password, or unsubscribe > from this list, visit > https://dev.eclipse.org/mailman/listinfo/jetty-users > -- Greg Wilkins <[email protected]> CTO http://webtide.com
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