51 lines
1.8 KiB
Go
51 lines
1.8 KiB
Go
// 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)
|
|
}
|