The download mesh is an extension to http used by Gnutella. Basically all downloaders and uploaders exchange the sources they know (just like a completely decentral BitTorrent server).

The headers are X-Alt (IPs+ports of other down- and uploaders) and X-NAlt (non working IPs+ports for preventing spam and getting offline nodes out of the mesh).

As soon as you've seen a download going from 5 sources to 400 sources in half a minute, you know its efficiency

Sadly it isn’t supported at all. It was implemented on top of LimeWire, but rejected by the limewire team. so it’s only a proof of concept (it worked quite well — at least for the tests I did back then).

This had the potential of stopping spam once and for all, so I thought it might interest you.

I meant my info I wrote above — sorry for not being clearer.

That’s great! http://groups.yahoo.com/group/the_gdf/message/23708

If I can do anything to help, please tell me. I’m no Java coder, but I have some background knowledge from supporting Phex users in here and discussing in the_gdf (the Gnutella development forum).

The current discussion in the GDF might also be interesting to you: More intelligent searches via a GGEP extension: "a AND (b OR c)"

→ the_gdf : The Gnutella Developer Forum (GDF)
→ Yahoo! Groups

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