discovery

type Announcer interface {
	// Announce announces a service
	Announce(ctx context.Context, serviceName string, opts ...Option) error
}

type Discoverer interface {
	// FindPeers find peers who support the service which name is the given.
	// This is a persistent process, so you should call this method only once for each service name.
	// If you want to stop finding, the cancel function for context given should be call.
	FindPeers(ctx context.Context, serviceName string, opts ...Option) (<-chan ma.Multiaddr, error)
}

type Discovery interface {
	Announcer
	Discoverer
}

type Option func(options *Options) error

type Options struct {
	Opts map[interface{}]interface{}
}