Implement proposal 318: Limit protovers to 0..63
In brief: we go through a lot of gymnastics to handle huge protover numbers, but after years of development we're not even close to 10 for any of our current versions. We also have a convenient workaround available in case we ever run out of protocols: if (for example) we someday need Link=64, we can just add Link2=0 or something. This patch is a minimal patch to change tor's behavior; it doesn't take advantage of the new restrictions. Implements #40133 and proposal 318.
Showing with 66 additions and 126 deletions