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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.
56 lines
2.2 KiB
Go
56 lines
2.2 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"
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)
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// Type safe handlers which all have access to the original stream & decompressed data.
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// Since packets are just structs, they can be resent with no issue
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func (c *ConsensusHandlers) pingHandler(ctx *communication.StreamContext, _ *communication.EmptyPacket) error {
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return ctx.Codec.WritePacket(&cltypes.Ping{
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Id: c.metadata.SeqNumber,
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}, SuccessfulResponsePrefix)
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}
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func (c *ConsensusHandlers) goodbyeHandler(ctx *communication.StreamContext, _ *communication.EmptyPacket) error {
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// From the spec, these are the valid goodbye numbers. Start with just
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// sending 1, but we should think about when the others need to be sent.
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// 1: Client shut down.
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// 2: Irrelevant network.
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// 3: Fault/error.
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return ctx.Codec.WritePacket(&cltypes.Ping{
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Id: 1,
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}, SuccessfulResponsePrefix)
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}
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func (c *ConsensusHandlers) metadataV1Handler(ctx *communication.StreamContext, _ *communication.EmptyPacket) error {
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return ctx.Codec.WritePacket(&cltypes.MetadataV1{
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SeqNumber: c.metadata.SeqNumber,
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Attnets: c.metadata.Attnets,
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}, SuccessfulResponsePrefix)
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}
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func (c *ConsensusHandlers) metadataV2Handler(ctx *communication.StreamContext, _ *communication.EmptyPacket) error {
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return ctx.Codec.WritePacket(c.metadata, SuccessfulResponsePrefix)
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}
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// TODO: Actually respond with proper status
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func (c *ConsensusHandlers) statusHandler(ctx *communication.StreamContext, dat *cltypes.Status) error {
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return ctx.Codec.WritePacket(dat, SuccessfulResponsePrefix)
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}
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