Hello,
I am trying to understand how the serach is working in gnutella2. I read the spec (at Main Page - Gnutella2), but it is not clear enough thus I would like to ask for your help please:

What is the algorithm for chosing the hubs to send Q2?
What is the algorithm for forwarding Q2?
Are there any filtering of QH2 packets by intermidiate nodes?
What are the recommended documentations of these topics?

Regards
Moshiko