routing

type MessageRouting interface {
	// SendMessage forward messages to peers
	// if no connection has been established with the target peer, the message is sent directly to the target peer.
	// if no connection is established with the target peer, a few peers closest to the target peer
	//  will be selected from the peers that have established connections to send routing messages.
	// if the peer receives the routing message request and finds that the target peer is not itself,
	//  it will repeat the forwarding action again, and will select several peers closest to the target peer
	//  from the peers that have established connections to send the routing message.
	// the forwarding of the message is terminated until the target peer receives the message or the message expires.
	SendMessage(ctx context.Context, service string, protocolID protocol.ID, targetPeerId peer.ID, msgPayload []byte,
		timeout time.Duration, waitResp bool) (peer.AddrInfo, error)
}

type PeerRouting interface {
	// FindPeer searches for a peer with given ID
	FindPeer(ctx context.Context, service string, targetPeerId peer.ID, timeout time.Duration) (peer.AddrInfo, error)
}

type ProtocolRouting interface {
	// FindPeerSupportProtocolsAsync searches for a peer with given protocol id list
	FindPeerSupportProtocolsAsync(context.Context, int, ...protocol.ID) <-chan peer.AddrInfo
}

type Routing interface {
	ProtocolRouting
	MessageRouting
}