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Add no repeat attestation condition for committee_index_beacon_attestation gossip channel

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Danny Ryan 2020-02-10 18:53:26 -07:00
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specs/phase0/p2p-interface.md
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@ -273,9 +273,11 @@ Attestation subnets are used to propagate unaggregated attestations to subsectio
- `committee_index{subnet_id}_beacon_attestation` - These topics are used to propagate unaggregated attestations to the subnet `subnet_id` (typically beacon and persistent committees) to be aggregated before being gossiped to `beacon_aggregate_and_proof`. The following validations MUST pass before forwarding the `attestation` on the subnet.
- The attestation's committee index (`attestation.data.index`) is for the correct subnet.
- The attestation is unaggregated -- that is, it has exactly one participating validator (`len([bit for bit in attestation.aggregation_bits if bit == 0b1]) == 1`).
- The block being voted for (`attestation.data.beacon_block_root`) passes validation.
- The attestation is the first attestation received for the participating validator for the slot `attestation.data.slot`
- `attestation.data.slot` is within the last `ATTESTATION_PROPAGATION_SLOT_RANGE` slots (within a `MAXIMUM_GOSSIP_CLOCK_DISPARITY` allowance) -- i.e. `attestation.data.slot + ATTESTATION_PROPAGATION_SLOT_RANGE >= current_slot >= attestation.data.slot`.
- The attestation is unaggregated -- that is, it has exactly one participating validator (`len([bit for bit in attestation.aggregation_bits if bit == 0b1]) == 1`).
- This is the first attestation for the participating validator at this slot.
- The block being voted for (`attestation.data.beacon_block_root`) passes validation.
- The signature of `attestation` is valid.
#### Interop