mirror of https://github.com/waku-org/nwaku.git
103 lines
3.7 KiB
Nim
103 lines
3.7 KiB
Nim
import
|
||
std/[tables, sequtils],
|
||
stew/byteutils,
|
||
stew/shims/net,
|
||
chronicles,
|
||
chronos,
|
||
confutils,
|
||
libp2p/crypto/crypto,
|
||
eth/keys,
|
||
eth/p2p/discoveryv5/enr
|
||
|
||
import
|
||
../../../waku/common/logging,
|
||
../../../waku/node/peer_manager,
|
||
../../../waku/waku_core,
|
||
../../../waku/waku_node,
|
||
../../../waku/waku_enr,
|
||
../../../waku/waku_discv5
|
||
|
||
# An accesible bootstrap node. See wakuv2.prod fleets.status.im
|
||
const bootstrapNode = "enr:-Nm4QOdTOKZJKTUUZ4O_W932CXIET-M9NamewDnL78P5u9DOGnZl" &
|
||
"K0JFZ4k0inkfe6iY-0JAaJVovZXc575VV3njeiABgmlkgnY0gmlwhAjS" &
|
||
"3ueKbXVsdGlhZGRyc7g6ADg2MW5vZGUtMDEuYWMtY24taG9uZ2tvbmct" &
|
||
"Yy53YWt1djIucHJvZC5zdGF0dXNpbS5uZXQGH0DeA4lzZWNwMjU2azGh" &
|
||
"Ao0C-VvfgHiXrxZi3umDiooXMGY9FvYj5_d1Q4EeS7eyg3RjcIJ2X4N1" &
|
||
"ZHCCIyiFd2FrdTIP"
|
||
|
||
# careful if running pub and sub in the same machine
|
||
const wakuPort = 50000
|
||
const discv5Port = 8000
|
||
|
||
proc setupAndSubscribe(rng: ref HmacDrbgContext) {.async.} =
|
||
# use notice to filter all waku messaging
|
||
setupLogLevel(logging.LogLevel.NOTICE)
|
||
notice "starting subscriber", wakuPort=wakuPort, discv5Port=discv5Port
|
||
let
|
||
nodeKey = crypto.PrivateKey.random(Secp256k1, rng[])[]
|
||
ip = ValidIpAddress.init("0.0.0.0")
|
||
flags = CapabilitiesBitfield.init(lightpush = false, filter = false, store = false, relay = true)
|
||
|
||
var builder = WakuNodeBuilder.init()
|
||
builder.withNodeKey(nodeKey)
|
||
builder.withNetworkConfigurationDetails(ip, Port(wakuPort)).tryGet()
|
||
let node = builder.build().tryGet()
|
||
|
||
var bootstrapNodeEnr: enr.Record
|
||
discard bootstrapNodeEnr.fromURI(bootstrapNode)
|
||
|
||
# assumes behind a firewall, so not care about being discoverable
|
||
let wakuDiscv5 = WakuDiscoveryV5.new(
|
||
extIp= none(ValidIpAddress),
|
||
extTcpPort = none(Port),
|
||
extUdpPort = none(Port),
|
||
bindIP = ip,
|
||
discv5UdpPort = Port(discv5Port),
|
||
bootstrapEnrs = @[bootstrapNodeEnr],
|
||
privateKey = keys.PrivateKey(nodeKey.skkey),
|
||
flags = flags,
|
||
rng = node.rng,
|
||
topics = @[],
|
||
)
|
||
|
||
await node.start()
|
||
await node.mountRelay()
|
||
node.peerManager.start()
|
||
|
||
let discv5Res = wakuDiscv5.start()
|
||
if discv5Res.isErr():
|
||
error "failed to start discv5", error = discv5Res.error
|
||
quit(1)
|
||
|
||
asyncSpawn wakuDiscv5.searchLoop(node.peerManager)
|
||
|
||
# wait for a minimum of peers to be connected, otherwise messages wont be gossiped
|
||
while true:
|
||
let numConnectedPeers = node.peerManager.peerStore[ConnectionBook].book.values().countIt(it == Connected)
|
||
if numConnectedPeers >= 6:
|
||
notice "subscriber is ready", connectedPeers=numConnectedPeers, required=6
|
||
break
|
||
notice "waiting to be ready", connectedPeers=numConnectedPeers, required=6
|
||
await sleepAsync(5000)
|
||
|
||
# Make sure it matches the publisher. Use default value
|
||
# see spec: https://rfc.vac.dev/spec/23/
|
||
let pubSubTopic = PubsubTopic("/waku/2/default-waku/proto")
|
||
|
||
# any content topic can be chosen. make sure it matches the publisher
|
||
let contentTopic = ContentTopic("/examples/1/pubsub-example/proto")
|
||
|
||
proc handler(topic: PubsubTopic, msg: WakuMessage): Future[void] {.async, gcsafe.} =
|
||
let payloadStr = string.fromBytes(msg.payload)
|
||
if msg.contentTopic == contentTopic:
|
||
notice "message received", payload=payloadStr,
|
||
pubsubTopic=pubsubTopic,
|
||
contentTopic=msg.contentTopic,
|
||
timestamp=msg.timestamp
|
||
node.subscribe(pubSubTopic, handler)
|
||
|
||
when isMainModule:
|
||
let rng = crypto.newRng()
|
||
asyncSpawn setupAndSubscribe(rng)
|
||
runForever()
|