[undertow-dev] Fwd: Undertow Gzip Content-Encoding with Chuncked Transfer-Encoding

Dear Undertow devs, I originally posted the below question on the Wildfly forum and was advised to do it here instead. I am using the Undertow EncodingHandler with a Gzip Encoding provider, as follows (sample code taken from an Undertow unit test): 1. final EncodingHandler handler = 2. new EncodingHandler(new ContentEncodingRepository() 3. .addEncodingHandler("gzip", 4. new GzipEncodingProvider(), 50, 5. Predicates.parse("max-content-size[5]"))) 6. .setNext(path); It works fine for very small response bodies, however, when Undertow starts to use the Chunked Transfer-Encoding, the Gzip compression is simply ignored. My question is basically: how to apply a Gzip encoding (or other compression) before Undertow starts chunking the response? Could it be a bug? Also, and I could not really track it down from the source code, how does Undertow decide to start chunking the response? Thanks in advance! Cheers, Antoine