status-im/status-go

package discovery

import (
    "time"

    "github.com/ethereum/go-ethereum/p2p/discv5"
)

const (
    // EthereumV5 is kademlia-based discovery from go-ethereum repository.
    EthereumV5 = "ethv5"
    // RendezvousV1 is req/rep based discovery that uses ENR for records.
    RendezvousV1 = "ethvousv1"
)

// Discovery is an abstract interface for using different discovery providers.
type Discovery interface {
    Running() bool
    Start() error
    Stop() error
    Register(topic string, stop chan struct{}) error
    Discover(topic string, period <-chan time.Duration, found chan<- *discv5.Node, lookup chan<- bool) error
}