You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
926 B
37 lines
926 B
const dht = require('../')
|
|
const crypto = require('crypto')
|
|
|
|
// Let's create 100 dht nodes for our example.
|
|
for (var i = 0; i < 100; i++) createNode()
|
|
|
|
function createNode () {
|
|
const node = dht({
|
|
bootstrap: [
|
|
'localhost:10001'
|
|
]
|
|
})
|
|
|
|
const values = new Map()
|
|
|
|
node.command('values', {
|
|
// When we are the closest node and someone is sending us a "store" command
|
|
update (query, cb) {
|
|
if (!query.value) return cb()
|
|
|
|
// Use the hash of the value as the key
|
|
const key = sha256(query.value).toString('hex')
|
|
values.set(key, query.value)
|
|
console.log('Storing', key, '-->', query.value.toString())
|
|
cb()
|
|
},
|
|
// When someone is querying for a "lookup" command
|
|
query (query, cb) {
|
|
const value = values.get(query.target.toString('hex'))
|
|
cb(null, value)
|
|
}
|
|
})
|
|
}
|
|
|
|
function sha256 (val) {
|
|
return crypto.createHash('sha256').update(val).digest()
|
|
}
|
|
|