On Fri, 18 Oct 2002, Chris Riegel wrote:

> The bigger question may be, if you cache P2P on any device, will you
> get a "love letter" from the Recording Industry Association of
> America or the Motion Picture Association detailing how you are
> assisting in the commission of a crime to cache that copyrighted
> content.

With any content caching system, it is impossible to completely
eliminate (C) violation claims, of course. The authors of the paper I
mentioned used an interesting trick to reduce the validity of those
claims.

Every P2P connection was allowed to go through the connection
establishment and authentication phase as if there was no cache (i.e.,
document miss). If the content was also in the cache, the connection
was then hijacked/redirected (I do not recall technical details) to
serve actual bytes from the cache (i.e., byte hit). Thus, the caching
system was not helping people find content and was only serving
content if a copy of the content would have been send from a remote
location anyway.

Alex.

-- 
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www.measurement-factory.com | HTTP compliance+ - Co-Advisor test suite
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