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f9c9ee5d07
* made handlers a bit better * made handlers a bit better Co-authored-by: giuliorebuffo <giuliorebuffo@system76-pc.localdomain>
116 lines
3.3 KiB
Go
116 lines
3.3 KiB
Go
/*
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Copyright 2022 Erigon-Lightclient contributors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sentinel
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import (
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"github.com/ledgerwatch/log/v3"
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"github.com/libp2p/go-libp2p/core/network"
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"github.com/libp2p/go-libp2p/core/protocol"
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ssz "github.com/prysmaticlabs/fastssz"
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)
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var ProtocolPrefix = "/eth2/beacon_chain/req"
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func getHandlers(s *Sentinel) map[protocol.ID]network.StreamHandler {
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return map[protocol.ID]network.StreamHandler{
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protocol.ID(ProtocolPrefix + "/ping/1/ssz_snappy"): s.pingHandler,
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protocol.ID(ProtocolPrefix + "/status/1/ssz_snappy"): s.statusHandler,
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protocol.ID(ProtocolPrefix + "/goodbye/1/ssz_snappy"): s.goodbyeHandler,
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protocol.ID(ProtocolPrefix + "/beacon_blocks_by_range/1/ssz_snappy"): s.blocksByRangeHandler,
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protocol.ID(ProtocolPrefix + "/beacon_blocks_by_root/1/ssz_snappy"): s.beaconBlocksByRootHandler,
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protocol.ID(ProtocolPrefix + "/metadata/1/ssz_snappy"): s.metadataHandler,
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}
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}
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func (s *Sentinel) pingHandler(stream network.Stream) {
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pingBytes := make([]byte, 8)
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n, err := stream.Read(pingBytes)
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if err != nil {
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log.Warn("handler crashed", "err", err)
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return
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}
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if n != 8 {
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log.Warn("Invalid ping received")
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return
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}
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log.Info("[Lightclient] Received", "ping", ssz.UnmarshallUint64(pingBytes))
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// Send it back
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n, err = stream.Write(pingBytes)
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if err != nil {
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log.Warn("handler crashed", "err", err)
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return
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}
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if n != 8 {
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log.Warn("Could not send Ping")
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}
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}
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func (s *Sentinel) statusHandler(stream network.Stream) {
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log.Info("Got status request")
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}
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func (s *Sentinel) goodbyeHandler(stream network.Stream) {
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goodByeBytes := make([]byte, 8)
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n, err := stream.Read(goodByeBytes)
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if err == network.ErrReset {
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// Handle data race.
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return
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}
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if err != nil {
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log.Warn("Goodbye handler crashed", "err", err)
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return
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}
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if n != 8 {
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log.Warn("Invalid goodbye message received")
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return
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}
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log.Info("[Lightclient] Received", "goodbye", ssz.UnmarshallUint64(goodByeBytes))
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n, err = stream.Write(goodByeBytes)
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if err == network.ErrReset {
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// We disconnected prior so this error can be ignored.
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return
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}
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if err != nil {
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log.Warn("Goodbye handler crashed", "err", err)
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return
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}
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if n != 8 {
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log.Warn("Could not send Goodbye")
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}
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s.peers.DisconnectPeer(stream.Conn().RemotePeer())
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}
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func (s *Sentinel) blocksByRangeHandler(stream network.Stream) {
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log.Info("Got block by range handler call")
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}
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func (s *Sentinel) beaconBlocksByRootHandler(stream network.Stream) {
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log.Info("Got beacon block by root handler call")
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}
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func (s *Sentinel) metadataHandler(stream network.Stream) {
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log.Info("Got metadata handler call")
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}
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func (s *Sentinel) setupHandlers() {
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for id, handler := range getHandlers(s) {
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s.host.SetStreamHandler(id, handler)
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}
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}
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