@silverpill @sendpaws >Why it is a useless traffic? On the contrary, embedded signatures reduce traffic because relayed posts don't need to be fetched from origin.
Take peer lists from
mstdn.social and
mastodon.social, filter for the same peers, cut them by an arbitrary fraction like 1/3 to somewhat compensate for dead instances and that number is the number of requests that are useless because both instances sent the same posts to the same instances. Now expand over the whole network. At least that's what happens when you implement shared inbox delivery relaying the way AP tells you to. Traditional relays don't have this problem because an instance subscribes to only a few of the large ones, one or two; treating an Announce with a pointer and a relayed Create or however this works the same.
For there to not be swaths of completely wasted traffic, you have to reduce the trigger for relaying to only a few actions, and never trigger when you receive a POST for a remote post.
>Federated groups (FEP-1b12), conversation containers
These don't inherently need it. They only need it because they embed Activities for real federation. Which is a valid case at least.
>nomadic identity
It doesn't matter here because the gateway can still rewrite posts and resign with its own key anyway. You would have to eliminate the middle man gateway and turn it into a Client-to-every-Server/Client at which point the proofs aren't needed either since the client is the one controlling the Actor representation now. However NAT becomes an issue.
