feat: add delegated peer and content routing support (#242)

* feat: allow for configuring content and peer routing

* feat: support multiple peer and content routing modules

* docs: add delegated routing example
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Jacob Heun 2018-10-19 16:28:28 +02:00 committed by GitHub
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18 changed files with 1155 additions and 147 deletions

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@ -116,9 +116,12 @@ const MulticastDNS = require('libp2p-mdns')
const DHT = require('libp2p-kad-dht')
const defaultsDeep = require('@nodeutils/defaults-deep')
const Protector = require('libp2p-pnet')
const DelegatedPeerRouter = require('libp2p-delegated-peer-routing')
const DelegatedContentRouter = require('libp2p-delegated-content-routing')
class Node extends libp2p {
constructor (_options) {
const peerInfo = _options.peerInfo
const defaults = {
// The libp2p modules for this libp2p bundle
modules: {
@ -133,8 +136,16 @@ class Node extends libp2p {
connEncryption: [
SECIO
],
// Encryption for private networks. Needs additional private key to work
/** Encryption for private networks. Needs additional private key to work **/
// connProtector: new Protector(/*protector specific opts*/),
/** Enable custom content routers, such as delegated routing **/
// contentRouting: [
// new DelegatedContentRouter(peerInfo.id)
// ],
/** Enable custom peer routers, such as delegated routing **/
// peerRouting: [
// new DelegatedPeerRouter()
// ],
peerDiscovery: [
MulticastDNS
],
@ -230,16 +241,19 @@ Required keys in the `options` object:
`callback` is a function with the following `function (err) {}` signature, where `err` is an Error in case stopping the node fails.
#### `libp2p.peerRouting.findPeer(id, callback)`
#### `libp2p.peerRouting.findPeer(id, options, callback)`
> Looks up for multiaddrs of a peer in the DHT
- `id`: instance of [PeerId][]
- `options`: object of options
- `options.maxTimeout`: Number milliseconds
#### `libp2p.contentRouting.findProviders(key, timeout, callback)`
#### `libp2p.contentRouting.findProviders(key, options, callback)`
- `key`: Buffer
- `timeout`: Number miliseconds
- `options`: object of options
- `options.maxTimeout`: Number milliseconds
#### `libp2p.contentRouting.provide(key, callback)`
@ -307,14 +321,18 @@ Required keys in the `options` object:
- `key`: Buffer
- `value`: Buffer
#### `libp2p.dht.get(key, callback)`
#### `libp2p.dht.get(key, options, callback)`
- `key`: Buffer
- `options`: object of options
- `options.maxTimeout`: Number milliseconds
#### `libp2p.dht.getMany(key, nVals, callback)`
#### `libp2p.dht.getMany(key, nVals, options, callback)`
- `key`: Buffer
- `nVals`: Number
- `options`: object of options
- `options.maxTimeout`: Number milliseconds
[PeerInfo]: https://github.com/libp2p/js-peer-info
[PeerId]: https://github.com/libp2p/js-peer-id

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@ -0,0 +1,49 @@
# Delegated Routing with Libp2p and IPFS
This example shows how to use delegated peer and content routing. The [Peer and Content Routing Example](../peer-and-content-routing) focuses
on the DHT implementation. This example takes that a step further and introduces delegated routing. Delegated routing is
especially useful when your libp2p node will have limited resources, making running a DHT impractical. It's
also highly useful if your node is generating content, but can't reliably be on the network. You can use delegate nodes
to provide content on your behalf.
The starting [Libp2p Bundle](./src/libp2p-bundle.js) in this example starts by disabling the DHT and adding the Delegated Peer and Content Routers.
Once you've completed the example, you should try enabled the DHT and see what kind of results you get! You can also enable the
various Peer Discovery modules and see the impact it has on your Peer count.
## Prerequisite
**NOTE**: This example is currently dependent on a clone of the [delegated routing support branch of go-ipfs](https://github.com/ipfs/go-ipfs/pull/4595).
## Running this example
1. Install IPFS locally if you dont already have it. [Install Guide](https://docs.ipfs.io/introduction/install/)
2. Run the IPFS daemon: `ipfs daemon`
3. The daemon will output a line about its API address, like `API server listening on /ip4/127.0.0.1/tcp/8080`
4. In another window output the addresses of the node: `ipfs id`. Make note of the websocket address, is will contain `/ws/` in the address.
5. In `./src/libp2p-bundle.js` replace the `delegatedApiOptions` host and port of your node if they are different.
6. In `./src/App.js` replace `BootstrapNode` with your nodes Websocket address from step 4.
7. Start this example:
```sh
npm install
npm start
```
This should open your browser to http://localhost:3000. If it does not, go ahead and do that now.
8. Your browser should show you connected to at least 1 peer.
### Finding Content via the Delegate
1. Add a file to your IPFS node. From this example root you can do `ipfs add ./README.md` to add the example readme.
2. Copy the hash from line 5, it will look something like *Qmf33vz4HJFkqgH7XPP1uA6atYKTX1BWQEQthzpKcAdeyZ*.
3. In the browser, paste the hash into the *Hash* field and hit `Find`. The readme contents should display.
This will do a few things:
* The delegate nodes api will be queried to find providers of the content
* The content will be fetched from the providers
* Since we now have the content, we tell the delegate node to fetch the content from us and become a provider
### Finding Peers via the Delegate
1. Get a list of your delegate nodes peer by querying the IPFS daemon: `ipfs swarm peers`
2. Copy one of the CIDs from the list of peer addresses, this will be the last portion of the address and will look something like `QmdoG8DpzYUZMVP5dGmgmigZwR1RE8Cf6SxMPg1SBXJAQ8`.
3. In your browser, paste the CID into the *Peer* field and hit `Find`.
4. You should see information about the peer including its addresses.

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@ -0,0 +1,23 @@
{
"name": "delegated-routing-example",
"version": "0.1.0",
"private": true,
"dependencies": {
"ipfs": "~0.32.2",
"libp2p": "../../",
"libp2p-delegated-content-routing": "~0.2.2",
"libp2p-delegated-peer-routing": "~0.2.2",
"libp2p-kad-dht": "~0.10.4",
"libp2p-mplex": "~0.8.0",
"libp2p-secio": "~0.10.0",
"libp2p-webrtc-star": "~0.15.5",
"libp2p-websocket-star": "~0.8.1",
"libp2p-websockets": "~0.12.0",
"react": "^16.5.2",
"react-dom": "^16.5.2",
"react-scripts": "1.1.5"
},
"scripts": {
"start": "react-scripts start"
}
}

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@ -0,0 +1,16 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<title>Delegated Routing</title>
<link rel="stylesheet" type="text/css" href="main.css">
</head>
<body>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
<div id="root"></div>
</body>
</html>

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@ -0,0 +1,67 @@
body {
margin: 0;
padding: 0;
font-family: sans-serif;
}
section * {
margin: 10px;
}
header {
background-color: #222;
height: 150px;
padding: 20px;
color: white;
}
.center {
text-align: center;
}
pre {
background-color: bisque;
min-height: 100px;
margin: 0px;
padding: 10px;
}
.loader {
text-align: center;
height: 64px;
margin-bottom: -64px;
}
.loading .lds-ripple {
display: inline-block;
position: relative;
width: 64px;
height: 64px;
}
.loading .lds-ripple div {
position: absolute;
border: 4px solid #000;
opacity: 1;
border-radius: 50%;
animation: lds-ripple 1s cubic-bezier(0, 0.2, 0.8, 1) infinite;
margin: auto;
}
.loading .lds-ripple div:nth-child(2) {
animation-delay: -0.5s;
}
@keyframes lds-ripple {
0% {
top: 28px;
left: 28px;
width: 0;
height: 0;
opacity: 1;
}
100% {
top: -1px;
left: -1px;
width: 58px;
height: 58px;
opacity: 0;
}
}

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@ -0,0 +1,153 @@
// eslint-disable-next-line
'use strict'
const React = require('react')
const Component = React.Component
const Ipfs = require('ipfs')
const libp2pBundle = require('./libp2p-bundle')
// require('./App.css')
const BootstrapNode = '/ip4/127.0.0.1/tcp/8081/ws/ipfs/QmdoG8DpzYUZMVP5dGmgmigZwR1RE8Cf6SxMPg1SBXJAQ8'
class App extends Component {
constructor (props) {
super(props)
this.state = {
peers: 0,
// This hash is the IPFS readme
hash: 'QmPZ9gcCEpqKTo6aq61g2nXGUhM4iCL3ewB6LDXZCtioEB',
// This peer is one of the Bootstrap nodes for IPFS
peer: 'QmV6kA2fB8kTr6jc3pL5zbNsjKbmPUHAPKKHRBYe1kDEyc',
isLoading: 0
}
this.peerInterval = null
this.handleHashChange = this.handleHashChange.bind(this)
this.handleHashSubmit = this.handleHashSubmit.bind(this)
this.handlePeerChange = this.handlePeerChange.bind(this)
this.handlePeerSubmit = this.handlePeerSubmit.bind(this)
}
handleHashChange (event) {
this.setState({
hash: event.target.value
})
}
handlePeerChange (event) {
this.setState({
peer: event.target.value
})
}
handleHashSubmit (event) {
event.preventDefault()
this.setState({
isLoading: this.state.isLoading + 1
})
this.ipfs.files.cat(this.state.hash, (err, data) => {
if (err) console.log('Error', err)
this.setState({
response: data.toString(),
isLoading: this.state.isLoading - 1
})
})
}
handlePeerSubmit (event) {
event.preventDefault()
this.setState({
isLoading: this.state.isLoading + 1
})
this.ipfs.dht.findpeer(this.state.peer, (err, results) => {
if (err) console.log('Error', err)
this.setState({
response: JSON.stringify(results, null, 2),
isLoading: this.state.isLoading - 1
})
})
}
componentDidMount () {
window.ipfs = this.ipfs = new Ipfs({
config: {
Addresses: {
Swarm: []
},
Discovery: {
MDNS: {
Enabled: false
},
webRTCStar: {
Enabled: false
}
},
Bootstrap: [
BootstrapNode
]
},
preload: {
enabled: false
},
libp2p: libp2pBundle
})
this.ipfs.on('ready', () => {
if (this.peerInterval) {
clearInterval(this.peerInterval)
}
this.ipfs.swarm.connect(BootstrapNode, (err) => {
if (err) {
console.log('Error connecting to the node', err)
}
console.log('Connected!')
})
this.peerInterval = setInterval(() => {
this.ipfs.swarm.peers((err, peers) => {
if (err) console.log(err)
if (peers) this.setState({peers: peers.length})
})
}, 2500)
})
}
render () {
return (
<div>
<header className="center">
<h1>Delegated Routing</h1>
<h2>There are currently {this.state.peers} peers.</h2>
</header>
<section className="center">
<form onSubmit={this.handleHashSubmit}>
<label>
Hash:
<input type="text" value={this.state.hash} onChange={this.handleHashChange} />
<input type="submit" value="Find" />
</label>
</form>
<form onSubmit={this.handlePeerSubmit}>
<label>
Peer:
<input type="text" value={this.state.peer} onChange={this.handlePeerChange} />
<input type="submit" value="Find" />
</label>
</form>
</section>
<section className={[this.state.isLoading > 0 ? 'loading' : '', 'loader'].join(' ')}>
<div className="lds-ripple"><div></div><div></div></div>
</section>
<section>
<pre>
{this.state.response}
</pre>
</section>
</div>
)
}
}
module.exports = App

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@ -0,0 +1,9 @@
// eslint-disable-next-line
'use strict'
const React = require('react') // eslint-disable-line no-unused-vars
const ReactDOM = require('react-dom')
const App = require('./App') // eslint-disable-line no-unused-vars
// require('index.css')
ReactDOM.render(<App />, document.getElementById('root'))

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@ -0,0 +1,78 @@
// eslint-disable-next-line
'use strict'
const Libp2p = require('libp2p')
const Websockets = require('libp2p-websockets')
const WebSocketStar = require('libp2p-websocket-star')
const WebRTCStar = require('libp2p-webrtc-star')
const MPLEX = require('libp2p-mplex')
const SECIO = require('libp2p-secio')
const KadDHT = require('libp2p-kad-dht')
const DelegatedPeerRouter = require('libp2p-delegated-peer-routing')
const DelegatedContentRouter = require('libp2p-delegated-content-routing')
module.exports = ({peerInfo, peerBook}) => {
const wrtcstar = new WebRTCStar({id: peerInfo.id})
const wsstar = new WebSocketStar({id: peerInfo.id})
const delegatedApiOptions = {
host: '0.0.0.0',
protocol: 'http',
port: '8080'
}
return new Libp2p({
peerInfo,
peerBook,
// Lets limit the connection managers peers and have it check peer health less frequently
connectionManager: {
maxPeers: 10,
pollInterval: 5000
},
modules: {
contentRouting: [
new DelegatedContentRouter(peerInfo.id, delegatedApiOptions)
],
peerRouting: [
new DelegatedPeerRouter(delegatedApiOptions)
],
peerDiscovery: [
wrtcstar.discovery,
wsstar.discovery
],
transport: [
wrtcstar,
wsstar,
Websockets
],
streamMuxer: [
MPLEX
],
connEncryption: [
SECIO
],
dht: KadDHT
},
config: {
peerDiscovery: {
webrtcStar: {
enabled: false
},
websocketStar: {
enabled: false
}
},
dht: {
kBucketSize: 20
},
relay: {
enabled: true,
hop: {
enabled: false
}
},
EXPERIMENTAL: {
dht: false
}
}
})
}

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@ -38,6 +38,7 @@
},
"dependencies": {
"async": "^2.6.1",
"err-code": "^1.1.2",
"joi": "^13.6.0",
"joi-browser": "^13.4.0",
"libp2p-connection-manager": "~0.0.2",
@ -47,6 +48,7 @@
"libp2p-websockets": "~0.12.0",
"mafmt": "^6.0.2",
"multiaddr": "^5.0.0",
"nock": "^9.4.3",
"peer-book": "~0.8.0",
"peer-id": "~0.11.0",
"peer-info": "~0.14.1"
@ -59,6 +61,8 @@
"dirty-chai": "^2.0.1",
"electron-webrtc": "~0.3.0",
"libp2p-circuit": "~0.2.1",
"libp2p-delegated-content-routing": "~0.2.2",
"libp2p-delegated-peer-routing": "~0.2.2",
"libp2p-kad-dht": "~0.10.5",
"libp2p-mdns": "~0.12.0",
"libp2p-mplex": "~0.8.2",

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@ -10,14 +10,16 @@ const OptionsSchema = Joi.object({
peerInfo: Joi.object().required(),
peerBook: Joi.object(),
modules: Joi.object().keys({
transport: Joi.array().items(ModuleSchema).min(1).required(),
streamMuxer: Joi.array().items(ModuleSchema).allow(null),
connEncryption: Joi.array().items(ModuleSchema).allow(null),
connProtector: Joi.object().keys({
protect: Joi.func().required()
}).unknown(),
contentRouting: Joi.array().items(Joi.object()).allow(null),
dht: ModuleSchema.allow(null),
peerDiscovery: Joi.array().items(ModuleSchema).allow(null),
dht: ModuleSchema.allow(null)
peerRouting: Joi.array().items(Joi.object()).allow(null),
streamMuxer: Joi.array().items(ModuleSchema).allow(null),
transport: Joi.array().items(ModuleSchema).min(1).required()
}).required(),
config: Joi.object().keys({
peerDiscovery: Joi.object().allow(null),

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@ -1,20 +1,82 @@
'use strict'
const tryEach = require('async/tryEach')
const parallel = require('async/parallel')
const errCode = require('err-code')
module.exports = (node) => {
const routers = node._modules.contentRouting || []
// If we have the dht, make it first
if (node._dht) {
routers.unshift(node._dht)
}
return {
findProviders: (key, timeout, callback) => {
if (!node._dht) {
return callback(new Error('DHT is not available'))
/**
* Iterates over all content routers in series to find providers of the given key.
* Once a content router succeeds, iteration will stop.
*
* @param {CID} key The CID key of the content to find
* @param {object} options
* @param {number} options.maxTimeout How long the query should run
* @param {function(Error, Result<Array>)} callback
* @returns {void}
*/
findProviders: (key, options, callback) => {
if (!routers.length) {
return callback(errCode(new Error('No content routers available'), 'NO_ROUTERS_AVAILABLE'))
}
node._dht.findProviders(key, timeout, callback)
if (typeof options === 'function') {
callback = options
options = {}
} else if (typeof options === 'number') { // This can be deprecated in a future release
options = {
maxTimeout: options
}
}
const tasks = routers.map((router) => {
return (cb) => router.findProviders(key, options, (err, results) => {
if (err) {
return cb(err)
}
// If we don't have any results, we need to provide an error to keep trying
if (!results || Object.keys(results).length === 0) {
return cb(errCode(new Error('not found'), 'NOT_FOUND'), null)
}
cb(null, results)
})
})
tryEach(tasks, (err, results) => {
if (err && err.code !== 'NOT_FOUND') {
return callback(err)
}
results = results || []
callback(null, results)
})
},
/**
* Iterates over all content routers in parallel to notify it is
* a provider of the given key.
*
* @param {CID} key The CID key of the content to find
* @param {function(Error)} callback
* @returns {void}
*/
provide: (key, callback) => {
if (!node._dht) {
return callback(new Error('DHT is not available'))
if (!routers.length) {
return callback(errCode(new Error('No content routers available'), 'NO_ROUTERS_AVAILABLE'))
}
node._dht.provide(key, callback)
parallel(routers.map((router) => {
return (cb) => router.provide(key, cb)
}), callback)
}
}
}

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@ -20,8 +20,6 @@ const pubsub = require('./pubsub')
const getPeerInfo = require('./get-peer-info')
const validateConfig = require('./config').validate
exports = module.exports
const NOT_STARTED_ERROR_MESSAGE = 'The libp2p node is not started yet'
class Node extends EventEmitter {
@ -102,6 +100,7 @@ class Node extends EventEmitter {
}
// Attach remaining APIs
// peer and content routing will automatically get modules from _modules and _dht
this.peerRouting = peerRouting(this)
this.contentRouting = contentRouting(this)
this.dht = dht(this)

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@ -1,13 +1,58 @@
'use strict'
const tryEach = require('async/tryEach')
const errCode = require('err-code')
module.exports = (node) => {
const routers = node._modules.peerRouting || []
// If we have the dht, make it first
if (node._dht) {
routers.unshift(node._dht)
}
return {
findPeer: (id, callback) => {
if (!node._dht) {
return callback(new Error('DHT is not available'))
/**
* Iterates over all peer routers in series to find the given peer.
*
* @param {String} id The id of the peer to find
* @param {object} options
* @param {number} options.maxTimeout How long the query should run
* @param {function(Error, Result<Array>)} callback
* @returns {void}
*/
findPeer: (id, options, callback) => {
if (!routers.length) {
callback(errCode(new Error('No peer routers available'), 'NO_ROUTERS_AVAILABLE'))
}
node._dht.findPeer(id, callback)
if (typeof options === 'function') {
callback = options
options = {}
}
const tasks = routers.map((router) => {
return (cb) => router.findPeer(id, options, (err, result) => {
if (err) {
return cb(err)
}
// If we don't have a result, we need to provide an error to keep trying
if (!result || Object.keys(result).length === 0) {
return cb(errCode(new Error('not found'), 'NOT_FOUND'), null)
}
cb(null, result)
})
})
tryEach(tasks, (err, results) => {
if (err && err.code !== 'NOT_FOUND') {
return callback(err)
}
results = results || []
callback(null, results)
})
}
}
}

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@ -9,6 +9,8 @@ const PeerId = require('peer-id')
const waterfall = require('async/waterfall')
const WS = require('libp2p-websockets')
const Bootstrap = require('libp2p-bootstrap')
const DelegatedPeerRouter = require('libp2p-delegated-peer-routing')
const DelegatedContentRouter = require('libp2p-delegated-content-routing')
const validateConfig = require('../src/config').validate
@ -98,6 +100,34 @@ describe('configuration', () => {
expect(validateConfig(options)).to.deep.equal(expected)
})
it('should allow for delegated content and peer routing', () => {
const peerRouter = new DelegatedPeerRouter()
const contentRouter = new DelegatedContentRouter(peerInfo)
const options = {
peerInfo,
modules: {
transport: [ WS ],
peerDiscovery: [ Bootstrap ],
peerRouting: [ peerRouter ],
contentRouting: [ contentRouter ]
},
config: {
peerDiscovery: {
bootstrap: {
interval: 1000,
enabled: true
}
}
}
}
expect(validateConfig(options).modules).to.deep.include({
peerRouting: [ peerRouter ],
contentRouting: [ contentRouter ]
})
})
it('should not allow for dht to be enabled without it being provided', () => {
const options = {
peerInfo,

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@ -7,87 +7,363 @@ const chai = require('chai')
chai.use(require('dirty-chai'))
const expect = chai.expect
const parallel = require('async/parallel')
const waterfall = require('async/waterfall')
const _times = require('lodash.times')
const CID = require('cids')
const DelegatedContentRouter = require('libp2p-delegated-content-routing')
const sinon = require('sinon')
const nock = require('nock')
const ma = require('multiaddr')
const Node = require('./utils/bundle-nodejs')
const createNode = require('./utils/create-node')
const createPeerInfo = createNode.createPeerInfo
describe('.contentRouting', () => {
let nodeA
let nodeB
let nodeC
let nodeD
let nodeE
describe('via the dht', () => {
let nodeA
let nodeB
let nodeC
let nodeD
let nodeE
before(function (done) {
this.timeout(5 * 1000)
const tasks = _times(5, () => (cb) => {
createNode('/ip4/0.0.0.0/tcp/0', {
config: {
EXPERIMENTAL: {
dht: true
before(function (done) {
this.timeout(5 * 1000)
const tasks = _times(5, () => (cb) => {
createNode('/ip4/0.0.0.0/tcp/0', {
config: {
EXPERIMENTAL: {
dht: true
}
}
}
}, (err, node) => {
}, (err, node) => {
expect(err).to.not.exist()
node.start((err) => cb(err, node))
})
})
parallel(tasks, (err, nodes) => {
expect(err).to.not.exist()
node.start((err) => cb(err, node))
nodeA = nodes[0]
nodeB = nodes[1]
nodeC = nodes[2]
nodeD = nodes[3]
nodeE = nodes[4]
parallel([
(cb) => nodeA.dial(nodeB.peerInfo, cb),
(cb) => nodeB.dial(nodeC.peerInfo, cb),
(cb) => nodeC.dial(nodeD.peerInfo, cb),
(cb) => nodeD.dial(nodeE.peerInfo, cb),
(cb) => nodeE.dial(nodeA.peerInfo, cb)
], done)
})
})
parallel(tasks, (err, nodes) => {
expect(err).to.not.exist()
nodeA = nodes[0]
nodeB = nodes[1]
nodeC = nodes[2]
nodeD = nodes[3]
nodeE = nodes[4]
after((done) => {
parallel([
(cb) => nodeA.dial(nodeB.peerInfo, cb),
(cb) => nodeB.dial(nodeC.peerInfo, cb),
(cb) => nodeC.dial(nodeD.peerInfo, cb),
(cb) => nodeD.dial(nodeE.peerInfo, cb),
(cb) => nodeE.dial(nodeA.peerInfo, cb)
(cb) => nodeA.stop(cb),
(cb) => nodeB.stop(cb),
(cb) => nodeC.stop(cb),
(cb) => nodeD.stop(cb),
(cb) => nodeE.stop(cb)
], done)
})
})
after((done) => {
parallel([
(cb) => nodeA.stop(cb),
(cb) => nodeB.stop(cb),
(cb) => nodeC.stop(cb),
(cb) => nodeD.stop(cb),
(cb) => nodeE.stop(cb)
], done)
})
describe('le ring', () => {
const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSySnL')
it('let kbucket get filled', (done) => {
setTimeout(() => done(), 250)
})
it('nodeA.contentRouting.provide', (done) => {
nodeA.contentRouting.provide(cid, done)
})
it('nodeE.contentRouting.findProviders for existing record', (done) => {
nodeE.contentRouting.findProviders(cid, 5000, (err, providers) => {
expect(err).to.not.exist()
expect(providers).to.have.length.above(0)
it('should use the nodes dht to provide', (done) => {
const stub = sinon.stub(nodeA._dht, 'provide').callsFake(() => {
stub.restore()
done()
})
nodeA.contentRouting.provide()
})
it('should use the nodes dht to find providers', (done) => {
const stub = sinon.stub(nodeA._dht, 'findProviders').callsFake(() => {
stub.restore()
done()
})
nodeA.contentRouting.findProviders()
})
describe('le ring', () => {
const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSySnL')
it('let kbucket get filled', (done) => {
setTimeout(() => done(), 250)
})
it('nodeA.contentRouting.provide', (done) => {
nodeA.contentRouting.provide(cid, done)
})
it('nodeE.contentRouting.findProviders for existing record', (done) => {
nodeE.contentRouting.findProviders(cid, { maxTimeout: 5000 }, (err, providers) => {
expect(err).to.not.exist()
expect(providers).to.have.length.above(0)
done()
})
})
it('nodeC.contentRouting.findProviders for non existing record (timeout)', (done) => {
const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSnnnn')
nodeE.contentRouting.findProviders(cid, { maxTimeout: 5000 }, (err, providers) => {
expect(err).to.not.exist()
expect(providers).to.have.length(0)
done()
})
})
})
})
describe('via a delegate', () => {
let nodeA
let delegate
before((done) => {
waterfall([
(cb) => {
createPeerInfo(cb)
},
// Create the node using the delegate
(peerInfo, cb) => {
delegate = new DelegatedContentRouter(peerInfo.id, {
host: '0.0.0.0',
protocol: 'http',
port: 60197
}, [
ma('/ip4/0.0.0.0/tcp/60194')
])
nodeA = new Node({
peerInfo,
modules: {
contentRouting: [ delegate ]
},
config: {
relay: {
enabled: true,
hop: {
enabled: true,
active: false
}
}
}
})
nodeA.start(cb)
}
], done)
})
after((done) => nodeA.stop(done))
afterEach(() => nock.cleanAll())
describe('provide', () => {
it('should use the delegate router to provide', (done) => {
const stub = sinon.stub(delegate, 'provide').callsFake(() => {
stub.restore()
done()
})
nodeA.contentRouting.provide()
})
it('should be able to register as a provider', (done) => {
const cid = new CID('QmU621oD8AhHw6t25vVyfYKmL9VV3PTgc52FngEhTGACFB')
const mockApi = nock('http://0.0.0.0:60197')
// mock the swarm connect
.post('/api/v0/swarm/connect')
.query({
arg: `/ip4/0.0.0.0/tcp/60194/p2p-circuit/ipfs/${nodeA.peerInfo.id.toB58String()}`,
'stream-channels': true
})
.reply(200, {
Strings: [`connect ${nodeA.peerInfo.id.toB58String()} success`]
}, ['Content-Type', 'application/json'])
// mock the refs call
.post('/api/v0/refs')
.query({
recursive: true,
arg: cid.toBaseEncodedString(),
'stream-channels': true
})
.reply(200, null, [
'Content-Type', 'application/json',
'X-Chunked-Output', '1'
])
nodeA.contentRouting.provide(cid, (err) => {
expect(err).to.not.exist()
expect(mockApi.isDone()).to.equal(true)
done()
})
})
it('should handle errors when registering as a provider', (done) => {
const cid = new CID('QmU621oD8AhHw6t25vVyfYKmL9VV3PTgc52FngEhTGACFB')
const mockApi = nock('http://0.0.0.0:60197')
// mock the swarm connect
.post('/api/v0/swarm/connect')
.query({
arg: `/ip4/0.0.0.0/tcp/60194/p2p-circuit/ipfs/${nodeA.peerInfo.id.toB58String()}`,
'stream-channels': true
})
.reply(502, 'Bad Gateway', ['Content-Type', 'application/json'])
nodeA.contentRouting.provide(cid, (err) => {
expect(err).to.exist()
expect(mockApi.isDone()).to.equal(true)
done()
})
})
})
it('nodeC.contentRouting.findProviders for non existing record (timeout)', (done) => {
const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSnnnn')
describe('find providers', () => {
it('should use the delegate router to find providers', (done) => {
const stub = sinon.stub(delegate, 'findProviders').callsFake(() => {
stub.restore()
done()
})
nodeA.contentRouting.findProviders()
})
nodeE.contentRouting.findProviders(cid, 5000, (err, providers) => {
expect(err).to.not.exist()
expect(providers).to.have.length(0)
done()
it('should be able to find providers', (done) => {
const cid = new CID('QmU621oD8AhHw6t25vVyfYKmL9VV3PTgc52FngEhTGACFB')
const provider = 'QmZNgCqZCvTsi3B4Vt7gsSqpkqDpE7M2Y9TDmEhbDb4ceF'
const mockApi = nock('http://0.0.0.0:60197')
.post('/api/v0/dht/findprovs')
.query({
arg: cid.toBaseEncodedString(),
timeout: '1000ms',
'stream-channels': true
})
.reply(200, `{"Extra":"","ID":"QmWKqWXCtRXEeCQTo3FoZ7g4AfnGiauYYiczvNxFCHicbB","Responses":[{"Addrs":["/ip4/0.0.0.0/tcp/0"],"ID":"${provider}"}],"Type":1}\n`, [
'Content-Type', 'application/json',
'X-Chunked-Output', '1'
])
nodeA.contentRouting.findProviders(cid, 1000, (err, response) => {
expect(err).to.not.exist()
expect(response).to.have.length(1)
expect(response[0].id.toB58String()).to.equal(provider)
expect(mockApi.isDone()).to.equal(true)
done()
})
})
it('should handle errors when finding providers', (done) => {
const cid = new CID('QmU621oD8AhHw6t25vVyfYKmL9VV3PTgc52FngEhTGACFB')
const mockApi = nock('http://0.0.0.0:60197')
.post('/api/v0/dht/findprovs')
.query({
arg: cid.toBaseEncodedString(),
timeout: '30000ms',
'stream-channels': true
})
.reply(502, 'Bad Gateway', [
'X-Chunked-Output', '1'
])
nodeA.contentRouting.findProviders(cid, (err) => {
expect(err).to.exist()
expect(mockApi.isDone()).to.equal(true)
done()
})
})
})
})
describe('via the dht and a delegate', () => {
let nodeA
let delegate
before((done) => {
waterfall([
(cb) => {
createPeerInfo(cb)
},
// Create the node using the delegate
(peerInfo, cb) => {
delegate = new DelegatedContentRouter(peerInfo.id, {
host: '0.0.0.0',
protocol: 'http',
port: 60197
}, [
ma('/ip4/0.0.0.0/tcp/60194')
])
nodeA = new Node({
peerInfo,
modules: {
contentRouting: [ delegate ]
},
config: {
relay: {
enabled: true,
hop: {
enabled: true,
active: false
}
},
EXPERIMENTAL: {
dht: true
}
}
})
nodeA.start(cb)
}
], done)
})
after((done) => nodeA.stop(done))
describe('provide', () => {
it('should use both the dht and delegate router to provide', (done) => {
const dhtStub = sinon.stub(nodeA._dht, 'provide').callsFake(() => {})
const delegateStub = sinon.stub(delegate, 'provide').callsFake(() => {
expect(dhtStub.calledOnce).to.equal(true)
expect(delegateStub.calledOnce).to.equal(true)
delegateStub.restore()
dhtStub.restore()
done()
})
nodeA.contentRouting.provide()
})
})
describe('findProviders', () => {
it('should only use the dht if it finds providers', (done) => {
const results = [true]
const dhtStub = sinon.stub(nodeA._dht, 'findProviders').callsArgWith(2, null, results)
const delegateStub = sinon.stub(delegate, 'findProviders').throws(() => {
return new Error('the delegate should not have been called')
})
nodeA.contentRouting.findProviders('a cid', { maxTimeout: 5000 }, (err, results) => {
expect(err).to.not.exist()
expect(results).to.equal(results)
expect(dhtStub.calledOnce).to.equal(true)
expect(delegateStub.notCalled).to.equal(true)
delegateStub.restore()
dhtStub.restore()
done()
})
})
it('should use the delegate if the dht fails to find providers', (done) => {
const results = [true]
const dhtStub = sinon.stub(nodeA._dht, 'findProviders').callsArgWith(2, null, [])
const delegateStub = sinon.stub(delegate, 'findProviders').callsArgWith(2, null, results)
nodeA.contentRouting.findProviders('a cid', { maxTimeout: 5000 }, (err, results) => {
expect(err).to.not.exist()
expect(results).to.deep.equal(results)
expect(dhtStub.calledOnce).to.equal(true)
expect(delegateStub.calledOnce).to.equal(true)
delegateStub.restore()
dhtStub.restore()
done()
})
})
})
})

View File

@ -8,91 +8,261 @@ chai.use(require('dirty-chai'))
const expect = chai.expect
const parallel = require('async/parallel')
const _times = require('lodash.times')
const DelegatedPeerRouter = require('libp2p-delegated-peer-routing')
const sinon = require('sinon')
const nock = require('nock')
const createNode = require('./utils/create-node')
describe('.peerRouting', () => {
let nodeA
let nodeB
let nodeC
let nodeD
let nodeE
describe('via the dht', () => {
let nodeA
let nodeB
let nodeC
let nodeD
let nodeE
before(function (done) {
this.timeout(5 * 1000)
const tasks = _times(5, () => (cb) => {
createNode('/ip4/0.0.0.0/tcp/0', {
config: {
EXPERIMENTAL: {
dht: true
before('create the outer ring of connections', (done) => {
const tasks = _times(5, () => (cb) => {
createNode('/ip4/0.0.0.0/tcp/0', {
config: {
EXPERIMENTAL: {
dht: true
}
}
}
}, (err, node) => {
}, (err, node) => {
expect(err).to.not.exist()
node.start((err) => cb(err, node))
})
})
parallel(tasks, (err, nodes) => {
expect(err).to.not.exist()
node.start((err) => cb(err, node))
nodeA = nodes[0]
nodeB = nodes[1]
nodeC = nodes[2]
nodeD = nodes[3]
nodeE = nodes[4]
parallel([
(cb) => nodeA.dial(nodeB.peerInfo, cb),
(cb) => nodeB.dial(nodeC.peerInfo, cb),
(cb) => nodeC.dial(nodeD.peerInfo, cb),
(cb) => nodeD.dial(nodeE.peerInfo, cb),
(cb) => nodeE.dial(nodeA.peerInfo, cb)
], (err) => {
expect(err).to.not.exist()
// Give the kbucket time to fill in the dht
setTimeout(done, 250)
})
})
})
parallel(tasks, (err, nodes) => {
expect(err).to.not.exist()
nodeA = nodes[0]
nodeB = nodes[1]
nodeC = nodes[2]
nodeD = nodes[3]
nodeE = nodes[4]
after((done) => {
parallel([
(cb) => nodeA.dial(nodeB.peerInfo, cb),
(cb) => nodeB.dial(nodeC.peerInfo, cb),
(cb) => nodeC.dial(nodeD.peerInfo, cb),
(cb) => nodeD.dial(nodeE.peerInfo, cb),
(cb) => nodeE.dial(nodeA.peerInfo, cb)
(cb) => nodeA.stop(cb),
(cb) => nodeB.stop(cb),
(cb) => nodeC.stop(cb),
(cb) => nodeD.stop(cb),
(cb) => nodeE.stop(cb)
], done)
})
it('should use the nodes dht', (done) => {
const stub = sinon.stub(nodeA._dht, 'findPeer').callsFake(() => {
stub.restore()
done()
})
nodeA.peerRouting.findPeer()
})
describe('connected in an el ring', () => {
it('should be able to find a peer we are not directly connected to', (done) => {
parallel([
(cb) => nodeA.dial(nodeC.peerInfo.id, cb),
(cb) => nodeB.dial(nodeD.peerInfo.id, cb),
(cb) => nodeC.dial(nodeE.peerInfo.id, cb)
], (err) => {
if (err) throw err
expect(err).to.not.exist()
nodeB.peerRouting.findPeer(nodeE.peerInfo.id, (err, peerInfo) => {
expect(err).to.not.exist()
expect(nodeE.peerInfo.id.toB58String()).to.equal(peerInfo.id.toB58String())
done()
})
})
})
})
})
after((done) => {
parallel([
(cb) => nodeA.stop(cb),
(cb) => nodeB.stop(cb),
(cb) => nodeC.stop(cb),
(cb) => nodeD.stop(cb),
(cb) => nodeE.stop(cb)
], done)
describe('via a delegate', () => {
let nodeA
let delegate
before((done) => {
parallel([
// Create the node using the delegate
(cb) => {
delegate = new DelegatedPeerRouter({
host: 'ipfs.io',
protocol: 'https',
port: '443'
})
createNode('/ip4/0.0.0.0/tcp/0', {
modules: {
peerRouting: [ delegate ]
}
}, (err, node) => {
expect(err).to.not.exist()
nodeA = node
nodeA.start(cb)
})
}
], done)
})
after((done) => nodeA.stop(done))
afterEach(() => nock.cleanAll())
it('should use the delegate router to find peers', (done) => {
const stub = sinon.stub(delegate, 'findPeer').callsFake(() => {
stub.restore()
done()
})
nodeA.peerRouting.findPeer()
})
it('should be able to find a peer', (done) => {
const peerKey = 'QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSySnL'
const mockApi = nock('https://ipfs.io')
.post('/api/v0/dht/findpeer')
.query({
arg: peerKey,
timeout: '30000ms',
'stream-channels': true
})
.reply(200, `{"Extra":"","ID":"some other id","Responses":null,"Type":0}\n{"Extra":"","ID":"","Responses":[{"Addrs":["/ip4/127.0.0.1/tcp/4001"],"ID":"${peerKey}"}],"Type":2}\n`, [
'Content-Type', 'application/json',
'X-Chunked-Output', '1'
])
nodeA.peerRouting.findPeer(peerKey, (err, peerInfo) => {
expect(err).to.not.exist()
expect(peerInfo.id.toB58String()).to.equal(peerKey)
expect(mockApi.isDone()).to.equal(true)
done()
})
})
it('should error when a peer cannot be found', (done) => {
const peerKey = 'key of a peer not on the network'
const mockApi = nock('https://ipfs.io')
.post('/api/v0/dht/findpeer')
.query({
arg: peerKey,
timeout: '30000ms',
'stream-channels': true
})
.reply(200, `{"Extra":"","ID":"some other id","Responses":null,"Type":6}\n{"Extra":"","ID":"yet another id","Responses":null,"Type":0}\n{"Extra":"routing:not found","ID":"","Responses":null,"Type":3}\n`, [
'Content-Type', 'application/json',
'X-Chunked-Output', '1'
])
nodeA.peerRouting.findPeer(peerKey, (err, peerInfo) => {
expect(err).to.exist()
expect(peerInfo).to.not.exist()
expect(mockApi.isDone()).to.equal(true)
done()
})
})
it('should handle errors from the api', (done) => {
const peerKey = 'key of a peer not on the network'
const mockApi = nock('https://ipfs.io')
.post('/api/v0/dht/findpeer')
.query({
arg: peerKey,
timeout: '30000ms',
'stream-channels': true
})
.reply(502)
nodeA.peerRouting.findPeer(peerKey, (err, peerInfo) => {
expect(err).to.exist()
expect(peerInfo).to.not.exist()
expect(mockApi.isDone()).to.equal(true)
done()
})
})
})
describe('el ring', () => {
it('let kbucket get filled', (done) => {
setTimeout(() => done(), 250)
describe('via the dht and a delegate', () => {
let nodeA
let delegate
before((done) => {
parallel([
// Create the node using the delegate
(cb) => {
delegate = new DelegatedPeerRouter({
host: 'ipfs.io',
protocol: 'https',
port: '443'
})
createNode('/ip4/0.0.0.0/tcp/0', {
modules: {
peerRouting: [ delegate ]
},
config: {
EXPERIMENTAL: {
dht: true
}
}
}, (err, node) => {
expect(err).to.not.exist()
nodeA = node
nodeA.start(cb)
})
}
], done)
})
it('nodeA.dial by Id to node C', (done) => {
nodeA.dial(nodeC.peerInfo.id, (err) => {
expect(err).to.not.exist()
done()
after((done) => nodeA.stop(done))
describe('findPeer', () => {
it('should only use the dht if it finds the peer', (done) => {
const results = [true]
const dhtStub = sinon.stub(nodeA._dht, 'findPeer').callsArgWith(2, null, results)
const delegateStub = sinon.stub(delegate, 'findPeer').throws(() => {
return new Error('the delegate should not have been called')
})
nodeA.peerRouting.findPeer('a peer id', (err, results) => {
expect(err).to.not.exist()
expect(results).to.equal(results)
expect(dhtStub.calledOnce).to.equal(true)
expect(delegateStub.notCalled).to.equal(true)
delegateStub.restore()
dhtStub.restore()
done()
})
})
})
it('nodeB.dial by Id to node D', (done) => {
nodeB.dial(nodeD.peerInfo.id, (err) => {
expect(err).to.not.exist()
done()
})
})
it('should use the delegate if the dht fails to find the peer', (done) => {
const results = [true]
const dhtStub = sinon.stub(nodeA._dht, 'findPeer').callsArgWith(2, null, undefined)
const delegateStub = sinon.stub(delegate, 'findPeer').callsArgWith(2, null, results)
it('nodeC.dial by Id to node E', (done) => {
nodeC.dial(nodeE.peerInfo.id, (err) => {
expect(err).to.not.exist()
done()
})
})
it('nodeB.peerRouting.findPeer(nodeE.peerInfo.id)', (done) => {
nodeB.peerRouting.findPeer(nodeE.peerInfo.id, (err, peerInfo) => {
expect(err).to.not.exist()
expect(nodeE.peerInfo.id.toB58String()).to.equal(peerInfo.id.toB58String())
done()
nodeA.peerRouting.findPeer('a peer id', (err, results) => {
expect(err).to.not.exist()
expect(results).to.deep.equal(results)
expect(dhtStub.calledOnce).to.equal(true)
expect(delegateStub.calledOnce).to.equal(true)
delegateStub.restore()
dhtStub.restore()
done()
})
})
})
})

View File

@ -21,8 +21,7 @@ function createNode (multiaddrs, options, callback) {
}
waterfall([
(cb) => PeerId.create({ bits: 512 }, cb),
(peerId, cb) => PeerInfo.create(peerId, cb),
(cb) => createPeerInfo(cb),
(peerInfo, cb) => {
multiaddrs.map((ma) => peerInfo.multiaddrs.add(ma))
options.peerInfo = peerInfo
@ -31,4 +30,12 @@ function createNode (multiaddrs, options, callback) {
], callback)
}
function createPeerInfo (callback) {
waterfall([
(cb) => PeerId.create({ bits: 512 }, cb),
(peerId, cb) => PeerInfo.create(peerId, cb)
], callback)
}
module.exports = createNode
module.exports.createPeerInfo = createPeerInfo