feat(waku examples): Add examples of pairing with `js-waku` instance
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Emil Ivanichkov
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import
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std/[tables, times, sequtils],
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stew/shims/net,
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chronicles,
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chronos,
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confutils,
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libp2p/crypto/crypto,
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eth/[keys, p2p/discoveryv5/enr],
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nimcrypto/utils
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import
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waku/[waku_core, waku_node, waku_enr, waku_discv5],
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waku/waku_noise/[noise_types, noise_utils, noise_handshake_processing],
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waku/utils/noise,
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waku/node/peer_manager,
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waku/common/[logging, protobuf]
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import ../../waku_handshake_utils
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const bootstrapNode = "enr:-P-4QGVNANzbhCI49du6Moyw98AjuMhKoOpE_Jges9JlCq-I" &
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"CAVadktjfcNpuhQgT0g1cu86_S3nbM7eYkCsqDAQG7UBgmlkgnY0" &
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"gmlwhI_G-a6KbXVsdGlhZGRyc7hgAC02KG5vZGUtMDEuZG8tYW1z" &
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"My5zdGF0dXMucHJvZC5zdGF0dXNpbS5uZXQGdl8ALzYobm9kZS0w" &
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"MS5kby1hbXMzLnN0YXR1cy5wcm9kLnN0YXR1c2ltLm5ldAYBu94D" &
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"iXNlY3AyNTZrMaECoVyonsTGEQvVioM562Q1fjzTb_vKD152PPId" &
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"sV7sM6SDdGNwgnZfg3VkcIIjKIV3YWt1Mg8"
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const
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wakuPort = 60000
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discv5Port = 9000
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requiredConnectedPeers = 2
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# Make sure it matches the publisher. Use default value
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# see spec: https://rfc.vac.dev/spec/23/
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pubSubTopic = PubsubTopic("/waku/2/default-waku/proto")
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proc exampleJSWaku(rng: ref HmacDrbgContext) {.async.} =
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setupLogLevel(logging.LogLevel.NOTICE)
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var readyForFinalization = false
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################################
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# Initiator static/ephemeral key initialization and commitment
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let initiatorInfo = initAgentKeysAndCommitment(rng)
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# Read the QR
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let
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qr = readFile("build/data/qr.txt")
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(_, _, _, readEphemeralKey, _) = fromQr(qr)
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qrMessageNameTag = fromHex(readFile("build/data/qrMessageNametag.txt"))
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# We set the contentTopic from the content topic parameters exchanged in the QR
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contentTopic = initContentTopicFromQr(qr)
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notice "Starting `nwaku`-`js-waku` pairing example", wakuPort = wakuPort,
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discv5Port = discv5Port
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notice "Initial information parsed from the QR", contentTopic = contentTopic,
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qrMessageNameTag = qrMessageNameTag
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var
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initiatorHS = initHS(initiatorInfo, qr, true)
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initiatorHSResult: HandshakeResult
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# Setup the Waku node
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let
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nodeKey = crypto.PrivateKey.random(Secp256k1, rng[]).get()
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ip = parseIpAddress("0.0.0.0")
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flags = CapabilitiesBitfield.init(lightpush = false, filter = false,
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store = false, relay = true)
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var enrBuilder = EnrBuilder.init(nodeKey)
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let recordRes = enrBuilder.build()
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let record =
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if recordRes.isErr():
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error "failed to create enr record", error = recordRes.error
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quit(QuitFailure)
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else: recordRes.get()
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var builder = WakuNodeBuilder.init()
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builder.withNodeKey(nodeKey)
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builder.withRecord(record)
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builder.withNetworkConfigurationDetails(ip, Port(wakuPort)).tryGet()
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let node = builder.build().tryGet()
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var bootstrapNodeEnr: enr.Record
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discard bootstrapNodeEnr.fromURI(bootstrapNode)
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let discv5Conf = WakuDiscoveryV5Config(discv5Config: none(DiscoveryConfig),
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address: ip, port: Port(discv5Port),
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privateKey: keys.PrivateKey(nodeKey.skkey),
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bootstrapRecords: @[bootstrapNodeEnr],
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autoupdateRecord: true)
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# assumes behind a firewall, so not care about being discoverable
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let wakuDiscv5 = WakuDiscoveryV5.new(node.rng, discv5Conf, some(node.enr),
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some(node.peerManager),
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node.topicSubscriptionQueue)
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await node.start()
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await node.mountRelay()
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node.peerManager.start()
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(await wakuDiscv5.start()).isOkOr:
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error "failed to start discv5", error = error
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quit(1)
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# Wait for a minimum of peers to be connected, otherwise messages wont be gossiped
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while true:
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let numConnectedPeers = node.peerManager.peerStore[
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ConnectionBook].book.values().countIt(it == Connected)
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if numConnectedPeers >= requiredConnectedPeers:
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notice "Node is ready", connectedPeers = numConnectedPeers,
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required = requiredConnectedPeers
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break
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notice "Waiting for the node to be ready",
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connectedPeers = numConnectedPeers, required = requiredConnectedPeers
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await sleepAsync(5000)
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# Perform the handshake
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initiatorHSResult = await initiatorHandshake(rng, node, pubSubTopic,
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contentTopic, qr,
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qrMessageNameTag,
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initiatorInfo)
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await sleepAsync(1000) # Just in case there is some kind of delay on the other side
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## Scenario 1: Dump a lof of messages
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var
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payload: PayloadV2
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realMessage: seq[byte]
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readMessage: seq[byte]
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var i = 150
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while i > 0:
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realMessage = @[(byte)42,42,42,42]
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payload = writeMessage(initiatorHSResult, realMessage,
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initiatorHSResult.nametagsOutbound)
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let wakuMsg = encodePayloadV2( payload, contentTopic)
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await node.publish(some(pubSubTopic), wakuMsg.get)
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notice "Sending real message", payload=payload.messageNametag
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await sleepAsync(100)
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i = i - 1
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await sleepAsync(5000)
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## Scenario 2: Fake lost messages
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let
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message1 = @[(byte)1, 42, 42, 42]
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payload1 = writeMessage(initiatorHSResult, message1,
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initiatorHSResult.nametagsOutbound)
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wakuMessage1 = encodePayloadV2(payload1, contentTopic)
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notice "Sending first message"
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await node.publish(some(pubSubTopic), wakuMessage1.get)
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let
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lostMessage1 = @[(byte)1, 5, 5, 5]
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payloadLost1 = writeMessage(initiatorHSResult, lostMessage1,
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initiatorHSResult.nametagsOutbound)
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wakuLostMessage1 = encodePayloadV2(payloadLost1, contentTopic)
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let
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lostMessage2 = @[(byte)2, 5, 5, 5]
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payloadLost2 = writeMessage(initiatorHSResult, lostMessage2,
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initiatorHSResult.nametagsOutbound)
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wakuLostMessage2 = encodePayloadV2(payloadLost2, contentTopic)
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let
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message2 = @[(byte)2, 42, 42, 42]
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payload2 = writeMessage(initiatorHSResult, message2,
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initiatorHSResult.nametagsOutbound)
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wakuMessage2 = encodePayloadV2(payload2, contentTopic)
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notice "Sending second message"
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await node.publish(some(pubSubTopic), wakuMessage2.get)
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let
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lostMessage3 = @[(byte)3, 5, 5, 5]
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payloadLost3 = writeMessage(initiatorHSResult, lostMessage3,
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initiatorHSResult.nametagsOutbound)
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wakuLostMessage3 = encodePayloadV2(payloadLost3, contentTopic)
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await sleepAsync(10000)
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notice "Sending first lost message"
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await node.publish(some(pubSubTopic), wakuLostMessage1.get)
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let
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message3 = @[(byte)3, 42, 42, 42]
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payload3 = writeMessage(initiatorHSResult, message3,
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initiatorHSResult.nametagsOutbound)
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wakuMessage3 = encodePayloadV2(payload3, contentTopic)
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notice "Sending third message"
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await node.publish(some(pubSubTopic), wakuMessage3.get)
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await sleepAsync(10000)
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notice "Sending second lost message"
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await node.publish(some(pubSubTopic), wakuLostMessage2.get)
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await sleepAsync(1000)
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notice "Sending third lost message"
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await node.publish(some(pubSubTopic), wakuLostMessage3.get)
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when isMainModule:
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let rng = crypto.newRng()
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asyncSpawn exampleJSWaku(rng)
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runForever()
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