55 lines
2.0 KiB
Markdown
55 lines
2.0 KiB
Markdown
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# EIP-7549 -- Networking
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This document contains the consensus-layer networking specification for EIP-7549.
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The specification of these changes continues in the same format as the network specifications of previous upgrades, and assumes them as pre-requisite.
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## Table of contents
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<!-- TOC -->
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<!-- START doctoc generated TOC please keep comment here to allow auto update -->
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<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
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- [Modifications in EIP-7549](#modifications-in-eip-7549)
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- [The gossip domain: gossipsub](#the-gossip-domain-gossipsub)
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- [Topics and messages](#topics-and-messages)
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- [Global topics](#global-topics)
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- [`beacon_aggregate_and_proof`](#beacon_aggregate_and_proof)
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- [`beacon_attestation_{subnet_id}`](#beacon_attestation_subnet_id)
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<!-- END doctoc generated TOC please keep comment here to allow auto update -->
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<!-- /TOC -->
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## Modifications in EIP-7549
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### The gossip domain: gossipsub
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#### Topics and messages
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The `beacon_aggregate_and_proof` and `beacon_attestation_{subnet_id}` topics are modified to support the gossip of a new attestation type.
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##### Global topics
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###### `beacon_aggregate_and_proof`
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*[Modified in EIP7549]*
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The following convenience variables are re-defined
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- `index = get_committee_indices(aggregate.committee_bits)[0]`
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- `aggregation_bits = aggregate.aggregation_bits[0]`
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The following validations are added:
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* [REJECT] `len(committee_indices) == len(aggregate.attestation_bits) == 1`, where `committee_indices = get_committee_indices(aggregate)`.
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* [REJECT] `aggregate.data.index == 0`
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###### `beacon_attestation_{subnet_id}`
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The following convenience variables are re-defined
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- `index = get_committee_indices(attestation.committee_bits)[0]`
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- `aggregation_bits = attestation.aggregation_bits[0]`
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The following validations are added:
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* [REJECT] `len(committee_indices) == len(attestation.attestation_bits) == 1`, where `committee_indices = get_committee_indices(attestation)`.
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* [REJECT] `attestation.data.index == 0`
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