mirror of https://github.com/status-im/nim-eth.git
83 lines
3.1 KiB
Nim
83 lines
3.1 KiB
Nim
import
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stew/shims/net, bearssl, 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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proc localAddress*(port: int): Address =
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Address(ip: ValidIpAddress.init("127.0.0.1"), port: Port(port))
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proc initDiscoveryNode*(rng: ref BrHmacDrbgContext, 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 = 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 tableIpLimits = TableIpLimits(tableIpLimit: 1000, bucketIpLimit: 24)
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result = newProtocol(privKey,
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some(address.ip),
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some(address.port), 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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tableIpLimits = tableIpLimits,
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rng = rng)
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result.open()
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proc 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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proc generateNode*(privKey: PrivateKey, port: int = 20302,
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ip: ValidIpAddress = ValidIpAddress.init("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, some(ip),
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some(port), some(port), localEnrFields).expect("Properly intialized private key")
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result = newNode(enr).expect("Properly initialized node")
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proc generateNRandomNodes*(rng: ref BrHmacDrbgContext, 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 BrHmacDrbgContext, d: uint32,
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ip: ValidIpAddress = ValidIpAddress.init("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 BrHmacDrbgContext, d: uint32,
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ip: ValidIpAddress = ValidIpAddress.init("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 BrHmacDrbgContext, d: uint32, amount: int,
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ip: ValidIpAddress = ValidIpAddress.init("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 BrHmacDrbgContext, d: uint32, amount: int,
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ip: ValidIpAddress = ValidIpAddress.init("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, ValidIpAddress.init(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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