func (p *Peer) Register(gossip mesh.Gossip) {
	p.actions <- func() { p.gossip = gossip }
}
func (p *Peer) Register(gossip mesh.Gossip) {
	p.actions <- func() { p.gossip = gossip }
}
// Register injects the mesh.Gossip and enables full-duplex communication.
// Clients should consume from ReadFrom without blocking.