When calling rpc function from a client, to an other client does rpc pass from the server?

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:bust_in_silhouette: Asked By xlxs

When calling rpc function from a client, to an other client does rpc pass from the server?

or is it totally a peer to peer communication, and the server has no idea that the 2 clients communicated?

If they pass from the server, is there a way of knowing out the target and the source client that made the rpc?