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network/src/legacy/gossip: Wrap GossipEngine in Arc Mutex & lock it on use #890
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GossipEngine
in itself has no need to be Send and Sync, given that itdoes not rely on separately spawned background tasks anymore.
RegisteredMessageValidator
needs to beSend
andSync
due to theinherited trait bounds from implementing
GossipService
. In additionRegisteredMessageValidator
derivesClone
. TherebyGossipEngine
needs to be wrapped in an
Arc
andMutex
to keep the status quo.The first commit contains the actual logic, the second points to a patched version of Substrate's
polkadot-master
branch.