Allow to publish same message to multiple topics

[dapplion]

Ethereum beacon chain requires to publish the same SyncCommitteeSignature to multiple topics on small networks.

Currently gossipsub prevents doing that by throwing PublishError.Duplicate

js-libp2p-gossipsub/src/index.ts

Line 1858 in 17c25a1

throw Error('PublishError.Duplicate')

Signature of async publish(topic: TopicStr, data: Uint8Array) could be changed to topics: TopicStr[] to publish to multiple topics. Or add an option to disable checking for duplicate messages

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.