mirror of https://github.com/status-im/nim-eth.git
96 lines
3.2 KiB
Nim
96 lines
3.2 KiB
Nim
# nim-eth
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# Copyright (c) 2020-2024 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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std/net,
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chronos,
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../../eth/keys,
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../../eth/p2p/discoveryv5/[enr, node, routing_table],
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../../eth/p2p/discoveryv5/protocol as discv5_protocol
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export net
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func localAddress*(port: int): Address =
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Address(ip: parseIpAddress("127.0.0.1"), port: Port(port))
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proc initDiscoveryNode*(
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rng: ref HmacDrbgContext,
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privKey: PrivateKey,
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address: Address,
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bootstrapRecords: openArray[Record] = [],
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localEnrFields: openArray[(string, seq[byte])] = [],
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previousRecord = Opt.none(enr.Record)):
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discv5_protocol.Protocol =
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# set bucketIpLimit to allow bucket split
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let config = DiscoveryConfig.init(1000, 24, 5)
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let protocol = newProtocol(
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privKey,
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Opt.some(address.ip),
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Opt.some(address.port), Opt.some(address.port),
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bindPort = address.port,
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bootstrapRecords = bootstrapRecords,
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localEnrFields = localEnrFields,
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previousRecord = previousRecord,
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config = config,
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rng = rng)
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protocol.open()
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protocol
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func nodeIdInNodes*(id: NodeId, nodes: openArray[Node]): bool =
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for n in nodes:
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if id == n.id: return true
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func generateNode*(privKey: PrivateKey, port: int = 20302,
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ip: IpAddress = parseIpAddress("127.0.0.1"),
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localEnrFields: openArray[FieldPair] = []): Node =
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let port = Port(port)
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let enr = enr.Record.init(1, privKey, Opt.some(ip),
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Opt.some(port), Opt.some(port), localEnrFields).expect("Properly initialized private key")
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result = Node.fromRecord(enr)
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proc generateNRandomNodes*(rng: var HmacDrbgContext, n: int): seq[Node] =
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var res = newSeq[Node]()
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for i in 1..n:
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let node = generateNode(PrivateKey.random(rng))
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res.add(node)
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res
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proc nodeAndPrivKeyAtDistance*(n: Node, rng: var HmacDrbgContext, d: uint32,
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ip: IpAddress = parseIpAddress("127.0.0.1")): (Node, PrivateKey) =
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while true:
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let pk = PrivateKey.random(rng)
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let node = generateNode(pk, ip = ip)
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if logDistance(n.id, node.id) == d:
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return (node, pk)
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proc nodeAtDistance*(n: Node, rng: var HmacDrbgContext, d: uint32,
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ip: IpAddress = parseIpAddress("127.0.0.1")): Node =
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let (node, _) = n.nodeAndPrivKeyAtDistance(rng, d, ip)
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node
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proc nodesAtDistance*(
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n: Node, rng: var HmacDrbgContext, d: uint32, amount: int,
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ip: IpAddress = parseIpAddress("127.0.0.1")): seq[Node] =
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for i in 0..<amount:
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result.add(nodeAtDistance(n, rng, d, ip))
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proc nodesAtDistanceUniqueIp*(
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n: Node, rng: var HmacDrbgContext, d: uint32, amount: int,
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ip: IpAddress = parseIpAddress("127.0.0.1")): seq[Node] =
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var ta = initTAddress(ip, Port(0))
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for i in 0..<amount:
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ta.inc()
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result.add(nodeAtDistance(n, rng, d, ta.address()))
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proc addSeenNode*(d: discv5_protocol.Protocol, n: Node): bool =
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# Add it as a seen node, warning: for testing convenience only!
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n.seen = true
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d.addNode(n)
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