rust-libp2p/protocols/identify/src/topology.rs

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use libp2p_core::{topology::MemoryTopology, Multiaddr, PeerId};

/// Trait required on the topology for the identify system to store addresses.
pub trait IdentifyTopology {
    /// Adds to the topology an address discovered through identification.
    fn add_identify_discovered_addrs<TIter>(&mut self, peer: &PeerId, addr: TIter)
    where
        TIter: Iterator<Item = Multiaddr>;
}

impl IdentifyTopology for MemoryTopology {
    fn add_identify_discovered_addrs<TIter>(&mut self, peer: &PeerId, addr: TIter)
    where
        TIter: Iterator<Item = Multiaddr>,
    {
        for addr in addr {
            self.add_address(peer.clone(), addr);
        }
    }
}