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29ff8daa92
addressing some aspects of the req/resp portion of the CL spec: https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/p2p-interface.md#reqresp-interaction. this PR does a few things: 1. moves `blocksByRangeHandler` and `beaconBlocksByRootHandler` handlers to a different file in the `handlers` package. these are going to be the more complicated handlers so they will be better in their own files. 2. makes `pingHandler` a method on the `*ConsensusHandlers` receiver and starts returning the sequence number instead of the request. (see https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/p2p-interface.md#ping `Peers request and respond with their local metadata sequence number`). 3. adds a `goodbyeHandler` to respond with a status message of 1. (see https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/p2p-interface.md#goodbye). 4. makes `statusHandler` a method on the `*ConsensusHandlers` receiver. (the rest of this handler is still not implemented. 5. refactored the `heartbeats_test` into a table driven test. this makes the test much more readable: https://dave.cheney.net/2019/05/07/prefer-table-driven-tests.
64 lines
2.3 KiB
Go
64 lines
2.3 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 handlers
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import (
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"github.com/ledgerwatch/erigon/cmd/lightclient/cltypes"
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"github.com/ledgerwatch/erigon/cmd/lightclient/sentinel/communication/ssz_snappy"
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"github.com/ledgerwatch/erigon/cmd/lightclient/sentinel/peers"
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"github.com/libp2p/go-libp2p/core/host"
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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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)
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type ConsensusHandlers struct {
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handlers map[protocol.ID]network.StreamHandler
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host host.Host
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peers *peers.Peers
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metadata *cltypes.MetadataV2
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}
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const SuccessfulResponsePrefix = 0x00
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var NoRequestHandlers = map[string]bool{
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MetadataProtocolV1: true,
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MetadataProtocolV2: true,
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LightClientFinalityUpdateV1: true,
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}
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func NewConsensusHandlers(host host.Host, peers *peers.Peers, metadata *cltypes.MetadataV2) *ConsensusHandlers {
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c := &ConsensusHandlers{
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peers: peers,
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host: host,
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metadata: metadata,
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}
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c.handlers = map[protocol.ID]network.StreamHandler{
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protocol.ID(PingProtocolV1): curryStreamHandler(ssz_snappy.NewStreamCodec, c.pingHandler),
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protocol.ID(GoodbyeProtocolV1): curryStreamHandler(ssz_snappy.NewStreamCodec, c.goodbyeHandler),
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protocol.ID(StatusProtocolV1): curryStreamHandler(ssz_snappy.NewStreamCodec, c.statusHandler),
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protocol.ID(MetadataProtocolV1): curryStreamHandler(ssz_snappy.NewStreamCodec, c.metadataV1Handler),
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protocol.ID(MetadataProtocolV2): curryStreamHandler(ssz_snappy.NewStreamCodec, c.metadataV2Handler),
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protocol.ID(BeaconBlockByRangeProtocolV1): c.blocksByRangeHandler,
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protocol.ID(BeaconBlockByRootProtocolV1): c.beaconBlocksByRootHandler,
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}
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return c
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}
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func (c *ConsensusHandlers) Start() {
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for id, handler := range c.handlers {
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c.host.SetStreamHandler(id, handler)
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}
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}
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