mirror of https://github.com/waku-org/nwaku.git
83 lines
2.2 KiB
Nim
83 lines
2.2 KiB
Nim
## Waku Relay module. Thin layer on top of GossipSub.
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##
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## See https://github.com/vacp2p/specs/blob/master/specs/waku/v2/waku-relay.md
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## for spec.
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import
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chronos, chronicles, metrics,
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libp2p/protocols/pubsub/[pubsub, gossipsub],
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libp2p/protocols/pubsub/rpc/messages,
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libp2p/stream/connection
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logScope:
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topics = "wakurelay"
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const WakuRelayCodec* = "/vac/waku/relay/2.0.0-beta2"
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type
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WakuRelay* = ref object of GossipSub
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method init*(w: WakuRelay) =
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debug "init"
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proc handler(conn: Connection, proto: string) {.async.} =
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## main protocol handler that gets triggered on every
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## connection for a protocol string
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## e.g. ``/wakusub/0.0.1``, etc...
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##
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debug "Incoming WakuRelay connection"
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await w.handleConn(conn, proto)
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# XXX: Handler hijack GossipSub here?
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w.handler = handler
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w.codec = WakuRelayCodec
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method initPubSub*(w: WakuRelay) =
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debug "initWakuRelay"
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# after discussions with @sinkingsugar, this is essentially what is needed for
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# the libp2p `StrictNoSign` policy
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w.anonymize = true
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w.verifySignature = false
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w.sign = false
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procCall GossipSub(w).initPubSub()
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w.init()
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method subscribe*(w: WakuRelay,
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pubSubTopic: string,
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handler: TopicHandler) =
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debug "subscribe", pubSubTopic=pubSubTopic
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procCall GossipSub(w).subscribe(pubSubTopic, handler)
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method publish*(w: WakuRelay,
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pubSubTopic: string,
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message: seq[byte]
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): Future[int] {.async.} =
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debug "publish", pubSubTopic=pubSubTopic, message=message
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return await procCall GossipSub(w).publish(pubSubTopic, message)
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method unsubscribe*(w: WakuRelay,
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topics: seq[TopicPair]) =
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debug "unsubscribe"
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procCall GossipSub(w).unsubscribe(topics)
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method unsubscribeAll*(w: WakuRelay,
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pubSubTopic: string) =
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debug "unsubscribeAll"
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procCall GossipSub(w).unsubscribeAll(pubSubTopic)
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# GossipSub specific methods --------------------------------------------------
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method start*(w: WakuRelay) {.async.} =
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debug "start"
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await procCall GossipSub(w).start()
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method stop*(w: WakuRelay) {.async.} =
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debug "stop"
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await procCall GossipSub(w).stop()
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