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- // Copyright 2020 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- package eth
- import (
- "github.com/ethereum/go-ethereum/core"
- "github.com/ethereum/go-ethereum/eth/protocols/snap"
- "github.com/ethereum/go-ethereum/p2p/enode"
- )
- // snapHandler implements the snap.Backend interface to handle the various network
- // packets that are sent as replies or broadcasts.
- type snapHandler handler
- func (h *snapHandler) Chain() *core.BlockChain { return h.chain }
- // RunPeer is invoked when a peer joins on the `snap` protocol.
- func (h *snapHandler) RunPeer(peer *snap.Peer, hand snap.Handler) error {
- return (*handler)(h).runSnapExtension(peer, hand)
- }
- // PeerInfo retrieves all known `snap` information about a peer.
- func (h *snapHandler) PeerInfo(id enode.ID) interface{} {
- if p := h.peers.peer(id.String()); p != nil {
- if p.snapExt != nil {
- return p.snapExt.info()
- }
- }
- return nil
- }
- // Handle is invoked from a peer's message handler when it receives a new remote
- // message that the handler couldn't consume and serve itself.
- func (h *snapHandler) Handle(peer *snap.Peer, packet snap.Packet) error {
- return h.downloader.DeliverSnapPacket(peer, packet)
- }
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