Yes, SPDY deflate compresses all HTTP headers.
SPDY, as a transport layer, doesn't compress the payloads. However, it
does require that the client be able to support the standard HTTP gzip
Hi,I've understood that people pretty much think that SPDY should always be run on top of TLS. If that's the case, what would be the tradeoff between using TLS compression for regular HTTP vs. SPDY? I suppose the compression wrt. HTTP headers would be quite similar.
Of course SPDY still has other features like request chunking/muxing that makes it different from HTTP/TLS. But based on the tests we have done with SPDY, the speed-up we have seen has mosly been due to the header compression. That may be because our tests have been done over relatively low-capacity links where the pipes get full quite quickly and after that the page load time is merely a function of how many bytes there are to deliver.
Binoy and Aki have been looking into measuring those, but AFAIK ran into problems because it wasn't immediately obvious how to make chrome report those timings. Any hints would be greatly appreciated.