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Subject: EarthLink SIPshare: P2P content sharing over SIP
Good day, all. Hope it finds you well.
Early in the year we had an itch to show P2P content sharing could be
done over standard SIP. David Beckemeyer and I have finished a simple
Java app we're calling SIPshare
that is the immoral equivalent of gnutella, but uses standard SIP
signalling to build the network, search it for content in a distributed
fashion, and arrange for download of that content once it's located.
We are big P2P believers who also believe SIP is too important to be
viewed as only a protocol to establish voice and video sessions. P2P is
like roughage in the diet: it keeps things moving, keeps the roads to
the ends honest. So SIPshare is not overly interesting as a file sharing
app unto itself, but it is interesting as an unconventional use of SIP in
support of P2P. So if there are other P2P application ideas out there,
and of course there are, maybe they can use SIP for signalling instead
of inventing a new protocol? To demonstrate that use was our point.
SIPshare is open source and has a BSD-style license, so others are free
to use and modify.