mirror of
https://github.com/fluencelabs/js-libp2p
synced 2025-03-30 14:21:04 +00:00
978eb3676f
We have a peerstore that keeps all data for all observed peers in memory with no eviction. This is fine when you don't discover many peers but when using the DHT you encounter a significant number of peers so our peer storage grows and grows over time. We have a persistent peer store, but it just periodically writes peers into the datastore to be read at startup, still keeping them in memory. It also means a restart doesn't give you any temporary reprieve from the memory leak as the previously observed peer data is read into memory at startup. This change refactors the peerstore to use a datastore by default, reading and writing peer info as it arrives. It can be configured with a MemoryDatastore if desired. It was necessary to change the peerstore and *book interfaces to be asynchronous since the datastore api is asynchronous. BREAKING CHANGE: `libp2p.handle`, `libp2p.registrar.register` and the peerstore methods have become async
53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
/* eslint no-console: ["off"] */
|
|
'use strict'
|
|
|
|
const { generate } = require('libp2p/src/pnet')
|
|
const privateLibp2pNode = require('./libp2p-node')
|
|
|
|
const pipe = require('it-pipe')
|
|
|
|
// Create a Uint8Array and write the swarm key to it
|
|
const swarmKey = new Uint8Array(95)
|
|
generate(swarmKey)
|
|
|
|
// This key is for testing a different key not working
|
|
const otherSwarmKey = new Uint8Array(95)
|
|
generate(otherSwarmKey)
|
|
|
|
;(async () => {
|
|
const node1 = await privateLibp2pNode(swarmKey)
|
|
|
|
// TASK: switch the commented out line below so we're using a different key, to see the nodes fail to connect
|
|
const node2 = await privateLibp2pNode(swarmKey)
|
|
// const node2 = await privateLibp2pNode(otherSwarmKey)
|
|
|
|
await Promise.all([
|
|
node1.start(),
|
|
node2.start()
|
|
])
|
|
|
|
console.log('nodes started...')
|
|
|
|
// Add node 2 data to node1's PeerStore
|
|
await node1.peerStore.addressBook.set(node2.peerId, node2.multiaddrs)
|
|
await node1.dial(node2.peerId)
|
|
|
|
node2.handle('/private', ({ stream }) => {
|
|
pipe(
|
|
stream,
|
|
async function (source) {
|
|
for await (const msg of source) {
|
|
console.log(msg.toString())
|
|
}
|
|
}
|
|
)
|
|
})
|
|
|
|
const { stream } = await node1.dialProtocol(node2.peerId, '/private')
|
|
|
|
await pipe(
|
|
['This message is sent on a private network'],
|
|
stream
|
|
)
|
|
})()
|