Created
December 7, 2019 14:54
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ext.broadcast |
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var hypercore = require("hypercore") | |
var hyperswarm = require("hyperswarm") | |
var crypto = require("crypto") | |
var pump = require("pump") | |
var ram = require("random-access-memory") | |
function initiate (topic, opts) { | |
var swarm = hyperswarm({ announceLocalAddress: true }) | |
var topicBuffer = crypto.createHash('sha256') | |
.update(topic) | |
.digest() | |
swarm.join(topicBuffer, opts) | |
return swarm | |
} | |
let tunnelHandler = { | |
encoding: "utf-8", | |
onmessage (msg, peer) { | |
console.log("tunnel->", msg) | |
}, | |
onerror (err) { | |
console.error("tunnel handler had an error", err) | |
} | |
} | |
let feedname = process.argv.slice(2)[0] | |
if (!feedname) { | |
console.error("Usage: node script.js 'null'|<feedkey>") | |
process.exit() | |
} | |
let feedopts = { valueEncoding: "utf-8" } | |
let feed = feedname === "null" ? | |
hypercore(ram, feedopts) : | |
hypercore(ram, feedname, feedopts) | |
let ext = feed.registerExtension("tunnel", tunnelHandler) | |
console.dir(ext) | |
feed.on("ready", () => { | |
console.log("feed ready") | |
console.log("key:", feed.key.toString("hex")) | |
setInterval(() => { | |
let msg = "hello i am " | |
msg += feedname === "null" ? 'the originator' : 'the initiator' | |
ext.broadcast(msg) | |
}, 500) | |
let swarm = initiate("charon", { lookup: true, announce: true }) | |
swarm.on("connection", (socket, details) => { | |
console.log("swarm details.client: ", details.client) | |
var r = feed.replicate(details.client) | |
pump(socket, r, socket, function (err) { | |
if (err) console.error("error in pump", err) | |
}) | |
}) | |
swarm.on("peer", (peer) => { | |
console.log("received peer", peer.host) | |
}) | |
}) |
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