Round Retry

[sekulicd]

There are many potential reasons why round can fail and we should maximize success rate of rounds.
Also there could be malicious users who joins round but dont send sigs/nonces etc.
There should be mechanism in place that would analyze why round failed and try retry, if some client fails more time, it should be banned from round, or maybe if there are many users it should modify round interval for that round?

@tiero @altafan @louisinger @bordalix WDYT?

[altafan]

From the server POV, retrying means checking that all users are still online and create a new tree with the already provided nonces excluding the malicious and offline user(s).

The new round could start directly from the signing tree phase, with the server waiting for the users to submit tree signatures.

The server should surely have some slashing/banning mechanism in place, but for now it's not a priority.