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server.js
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server.js
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const crypto = require('crypto')
const dhtKv = require('dht-keyvalue')
const express = require("express");
const io = require('socket.io')() // create a socket.io server
const path = require("path");
const app = express();
let server = app.listen(3000)
app.use(express.static(path.join(__dirname, "public")));
io.attach(server,{
cors: {
origin: "*",
methods: ["GET", "POST"],
transports: ['websocket', 'polling'],
credentials: true
},
allowEIO3: true
})
let node
let appName
let apps = []
let peers = []
let pairs = []
let p = []
let opts = {
keep: true, // default = true. Keep the DHT object alive in the mainline bittorrent network
keepalive: 3600000 // default = 3600000. Interval to refresh the DHT object (milliseconds)
}
const dkv = new dhtKv(opts)
server.on('listening', ()=>{
if(server.address().address === '::'){
node = `ws://localhost:${server.address().port}`
console.log('listening on', node)
}
})
io.on('connection', socket => {
console.log('connected')
socket.emit('init')
socket.on('init', data => {
data = JSON.parse(data)
console.log('got here', data)
// Handle new nodes
if(data.type === 'node'){
let address = data.node
}
// Handle new peers
if(data.type === 'peer'){
appName = sha(data.appName)
console.log('Peer connected for app Id:', appName)
if(apps.length === 0) apps.push({appName: appName})
apps.forEach(app => {
if(!app) apps.push({appName: appName})
})
dkv.put([{key: appName}], (err, hash, key) => {
console.log('Put successful', key, hash)
dkv.get(key, (err, value) => {
console.log(value)
})
let newValue = [{nodes: node, peers: [socket.id]}] // need to sort out how to add a peer here
dkv.update(key, newValue, updated => {
if(updated === true){
dkv.get(key, (err, value) => {
console.log(value)
})
}
})
})
console.log(apps)
}
})
})
function sha(string){
let shasum = crypto.createHash('sha1')
shasum.update(string)
return shasum.digest('hex')
}