Allow non-synced nodes to process and forward transactions

[adrianbrink]

It would be great if a node that isn't fully synced yet can nevertheless receive transactions and forward them to its peers. It would make the UX a bit nicer.

┆Issue is synchronized with this Asana task by Unito

[cwgoes]

Hmm, it doesn't have the latest state though, so how can it run CheckTx?

We could have the node forward without checking, I suppose. What is the use case you had in mind?

[adrianbrink]

Better UX. Since nodes should expect to receive garbage (as in they need to be spam resistant on the P2P layer), I think we should be able to forward without having run CheckTx as long as it comes from a local RPC submission.

[cwgoes]

Ah, I see. In that case I think this is reasonable, though it may require forking Tendermint, which is annoying :/ .