Idea: Using the SPDY protocol to improve Tor performance
Steven J. Murdoch
tor+Steven.Murdoch at cl.cam.ac.uk
Fri Feb 5 11:35:45 UTC 2010
On Thu, Feb 04, 2010 at 11:14:28PM +0100, Carsten Krüger wrote:
> > SPDY is a transport layer for HTTP, and so has no effect on caching.
> Wrong, SPDY didn't now If-Modified-Since_Header and sends all data
SPDY supports all HTTP headers. What web servers do with them varies,
but Apache with SPDY support does the same as it does with normal TCP.
> From the FAQ of SPDY:
> Since we're proposing to do almost everything over an encrypted channel, we're making caching either difficult or impossible.
> We've had some discussions about having a non-secure, static-only content channel (where the resources are signed, or cryptographic hashes of the insecure content are sent over a secure link), but have made no headway yet...
They are referring to a transparent proxy, not in-browser caching. In
any case, we wouldn't use SSL because Tor encrypts data anyway.
> > Server push does need to be handled carefully with respect to caching,
> The Server pushes everything
Server push is still experimental, and not implemented as far as I
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