nimbus-eth2/tests/test_discovery.nim

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# beacon_chain
# Copyright (c) 2021-2023 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
{.used.}
import
testutils/unittests,
chronos, stew/shims/net, eth/keys, eth/p2p/discoveryv5/enr,
../beacon_chain/spec/[forks, network],
../beacon_chain/networking/[eth2_network, eth2_discovery],
./testutil
proc new(T: type Eth2DiscoveryProtocol,
pk: keys.PrivateKey,
enrIp: Option[IpAddress], enrTcpPort, enrUdpPort: Option[Port],
bindPort: Port, bindIp: IpAddress,
enrFields: openArray[(string, seq[byte])] = [],
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rng: ref HmacDrbgContext):
T {.raises: [CatchableError].} =
let optValidIpAddress =
if enrIp.isSome:
some ValidIpAddress.init enrIp.get
else:
none ValidIpAddress
newProtocol(pk, optValidIpAddress, enrTcpPort, enrUdpPort, enrFields,
bindPort = bindPort, bindIp = bindIp, rng = rng)
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proc generateNode(rng: ref HmacDrbgContext, port: Port,
enrFields: openArray[(string, seq[byte])] = []): Eth2DiscoveryProtocol =
let ip = parseIpAddress("127.0.0.1")
Eth2DiscoveryProtocol.new(keys.PrivateKey.random(rng[]),
some(ip), some(port), some(port), port, ip, enrFields, rng = rng)
# TODO: Add tests with a syncnets preference
const noSyncnetsPreference = SyncnetBits()
procSuite "Eth2 specific discovery tests":
let
rng = HmacDrbgContext.new()
enrForkId = ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0))
asyncTest "Subnet query":
var attnets: AttnetBits
attnets.setBit(34)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001), {
enrForkIdField: SSZ.encode(enrForkId),
enrAttestationSubnetsField: SSZ.encode(attnets)
})
node1.open()
node2.open()
# ping in one direction to add node2 to routing table of node1
check (await node2.ping(node1.localNode)).isOk()
var attnetsSelected: AttnetBits
attnetsSelected.setBit(42)
attnetsSelected.setBit(34)
let discovered = await node1.queryRandom(
enrForkId, attnetsSelected, noSyncnetsPreference, 1)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()
asyncTest "Invalid attnets field":
var invalidAttnets: BitArray[ATTESTATION_SUBNET_COUNT.int div 2]
invalidAttnets.setBit(15)
# TODO: This doesn't fail actually.
# var invalidAttnets2: BitArray[ATTESTATION_SUBNET_COUNT.int * 2]
# invalidAttnets2.setBit(15)
var attnets: AttnetBits
attnets.setBit(15)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001), {
enrForkIdField: SSZ.encode(enrForkId),
enrAttestationSubnetsField: SSZ.encode(invalidAttnets)
})
node3 = generateNode(rng, Port(5002), {
enrForkIdField: SSZ.encode(enrForkId),
enrAttestationSubnetsField: SSZ.encode(attnets)
})
node1.open()
node2.open()
node3.open()
check (await node2.ping(node1.localNode)).isOk()
check (await node3.ping(node1.localNode)).isOk()
var attnetsSelected: AttnetBits
attnetsSelected.setBit(15)
attnetsSelected.setBit(42)
let discovered = await node1.queryRandom(
enrForkId, attnetsSelected, noSyncnetsPreference, 1)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()
await node3.closeWait()
asyncTest "Subnet query after ENR update":
var attnets: AttnetBits
attnets.setBit(1)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001), {
enrForkIdField: SSZ.encode(enrForkId),
enrAttestationSubnetsField: SSZ.encode(attnets)
})
node1.open()
node2.open()
check (await node2.ping(node1.localNode)).isOk()
var attnetsSelected: AttnetBits
attnetsSelected.setBit(2)
block:
let discovered = await node1.queryRandom(
enrForkId, attnetsSelected, noSyncnetsPreference, 1)
check discovered.len == 0
block:
attnets.setBit(2)
check node2.updateRecord({
enrForkIdField: SSZ.encode(enrForkId),
enrAttestationSubnetsField: SSZ.encode(attnets)
}).isOk()
let nodes = await node1.findNode(node2.localNode, @[0'u16])
check nodes.isOk() and nodes[].len > 0
discard node1.addNode(nodes[][0])
let discovered = await node1.queryRandom(
enrForkId, attnetsSelected, noSyncnetsPreference, 1)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()
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suite "Fork id compatibility test":
test "Digest check":
check false == isCompatibleForkId(
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)),
ENRForkID(
fork_digest: ForkDigest([byte 9, 9, 9, 9]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)))
check true == isCompatibleForkId(
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)),
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)))
test "Fork check":
# Future fork should work
check true == isCompatibleForkId(
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)),
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 2, 2, 2, 2]),
next_fork_epoch: Epoch(2)))
# Past fork should fail
check false == isCompatibleForkId(
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 1]),
next_fork_epoch: Epoch(0)),
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)))
test "Next fork epoch check":
# Same fork should check next_fork_epoch
check false == isCompatibleForkId(
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0)),
ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(2)))
suite "Discovery fork ID":
test "Expected fork IDs":
let genesis_validators_root = ZERO_HASH
var cfg = defaultRuntimeConfig
cfg.ALTAIR_FORK_EPOCH = 5.Epoch
cfg.BELLATRIX_FORK_EPOCH = 10.Epoch
let
# Phase 0
phase0ForkId = block:
let
current_fork_version = cfg.GENESIS_FORK_VERSION
next_fork_version = current_fork_version
fork_digest = compute_fork_digest(
current_fork_version, genesis_validators_root)
forkId = ENRForkID(
fork_digest: fork_digest,
next_fork_version: next_fork_version,
next_fork_epoch: FAR_FUTURE_EPOCH)
for epoch in GENESIS_EPOCH ..< cfg.ALTAIR_FORK_EPOCH - 1:
check cfg.getDiscoveryForkID(epoch, genesis_validators_root) == forkId
forkId
# Altair should become visible 1 epoch before the fork
phase0AltairForkId = block:
let
current_fork_version = cfg.GENESIS_FORK_VERSION
next_fork_version = cfg.ALTAIR_FORK_VERSION
fork_digest = compute_fork_digest(
current_fork_version, genesis_validators_root)
forkId = ENRForkID(
fork_digest: fork_digest,
next_fork_version: next_fork_version,
next_fork_epoch: cfg.ALTAIR_FORK_EPOCH)
for epoch in cfg.ALTAIR_FORK_EPOCH - 1 ..< cfg.ALTAIR_FORK_EPOCH:
check cfg.getDiscoveryForkID(epoch, genesis_validators_root) == forkId
forkId
# Altair
altairForkId = block:
let
current_fork_version = cfg.ALTAIR_FORK_VERSION
next_fork_version = current_fork_version
fork_digest = compute_fork_digest(
current_fork_version, genesis_validators_root)
forkId = ENRForkID(
fork_digest: fork_digest,
next_fork_version: next_fork_version,
next_fork_epoch: FAR_FUTURE_EPOCH)
for epoch in cfg.ALTAIR_FORK_EPOCH ..< cfg.BELLATRIX_FORK_EPOCH - 1:
check cfg.getDiscoveryForkID(epoch, genesis_validators_root) == forkId
forkId
# Bellatrix should become visible 1 epoch before the fork
altairBellatrixForkId = block:
let
current_fork_version = cfg.ALTAIR_FORK_VERSION
next_fork_version = cfg.BELLATRIX_FORK_VERSION
fork_digest = compute_fork_digest(
current_fork_version, genesis_validators_root)
forkId = ENRForkID(
fork_digest: fork_digest,
next_fork_version: next_fork_version,
next_fork_epoch: cfg.BELLATRIX_FORK_EPOCH)
for epoch in cfg.BELLATRIX_FORK_EPOCH - 1 ..< cfg.BELLATRIX_FORK_EPOCH:
check cfg.getDiscoveryForkID(epoch, genesis_validators_root) == forkId
forkId
# Bellatrix
bellatrixForkId = block:
let
current_fork_version = cfg.BELLATRIX_FORK_VERSION
next_fork_version = current_fork_version
fork_digest = compute_fork_digest(
current_fork_version, genesis_validators_root)
forkId = ENRForkID(
fork_digest: fork_digest,
next_fork_version: next_fork_version,
next_fork_epoch: FAR_FUTURE_EPOCH)
for epoch in cfg.BELLATRIX_FORK_EPOCH ..< cfg.BELLATRIX_FORK_EPOCH + 5:
check cfg.getDiscoveryForkID(epoch, genesis_validators_root) == forkId
forkId
check: # isCompatibleForkId(ourForkId, peerForkId)
isCompatibleForkId(phase0ForkId, phase0ForkId)
isCompatibleForkId(phase0ForkId, phase0AltairForkId)
not isCompatibleForkId(phase0ForkId, altairForkId)
not isCompatibleForkId(phase0ForkId, altairBellatrixForkId)
not isCompatibleForkId(phase0ForkId, bellatrixForkId)
not isCompatibleForkId(phase0AltairForkId, phase0ForkId) # fork -1 epoch
isCompatibleForkId(phase0AltairForkId, phase0AltairForkId)
not isCompatibleForkId(phase0AltairForkId, altairForkId)
not isCompatibleForkId(phase0AltairForkId, altairBellatrixForkId)
not isCompatibleForkId(phase0AltairForkId, bellatrixForkId)
not isCompatibleForkId(altairForkId, phase0ForkId)
not isCompatibleForkId(altairForkId, phase0AltairForkId)
isCompatibleForkId(altairForkId, altairForkId)
isCompatibleForkId(altairForkId, altairBellatrixForkId)
not isCompatibleForkId(altairForkId, bellatrixForkId)
not isCompatibleForkId(altairBellatrixForkId, phase0ForkId)
not isCompatibleForkId(altairBellatrixForkId, phase0AltairForkId)
not isCompatibleForkId(altairBellatrixForkId, altairForkId) # fork -1 ep
isCompatibleForkId(altairBellatrixForkId, altairBellatrixForkId)
not isCompatibleForkId(altairBellatrixForkId, bellatrixForkId)
not isCompatibleForkId(bellatrixForkId, phase0ForkId)
not isCompatibleForkId(bellatrixForkId, phase0AltairForkId)
not isCompatibleForkId(bellatrixForkId, altairForkId)
not isCompatibleForkId(bellatrixForkId, altairBellatrixForkId)
isCompatibleForkId(bellatrixForkId, bellatrixForkId)