EBT fails with Patchwork-3.18.1 (ssb-ebt 5.6.7) when solar acts as responder

[mycognosist]

solar throws an error because the EBT replicate request from Patchwork does not contain the format field, as expected.

[2024-01-31T08:49:19Z TRACE muxrpc-ebt-handler] Received MUXRPC input: Network(4, RpcRequest(Body { name: ["ebt", "replicate"], rpc_type: Duplex, args: Array [Object {"version": Number(3)}] }))
[2024-01-31T08:49:19Z TRACE ebt-replication] Session error with HEqy940T6uB+T+d9Jaa58aNfRzLx9eRWqkZljBmnkmk=.ed25519 for request number None: Serde JSON error: missing field `format`

This is not a problem with solar, but I wanted to flag it here anyway. EBT replication seems to be working just fine when solar acts as the requester.

CC: @black-puppydog

[black-puppydog]

So patchwork isn't spec compliant?! Color me unsurprised 😆

[mycognosist]

I think the format field must have been introduced in a later version. The ssb-ebt version being used by Patchwork is quite old.