Unicast communication

What i want to achieve is to send a message in gossip in a network from peer A, and each peer in the network (in case they want to answer) should response in unicast to peer A.

Is there a protocol already implemented? Or do i need to implement a custom one (if yes, how to do it?)

Duplicate of Unicast communication · Issue #2545 · libp2p/rust-libp2p · GitHub.

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