feat: (BREAKING CHANGE) overhaul libp2p config and constructor

* docs: update chat example and add info to its readme
* docs: update echo example
* docs: update libp2p in browser example
* docs: update pubsub example
* docs: update peer and content routing examples
* docs: update discovery mechanisms example
* docs: update encrypted comms example
* docs: update protocol and stream muxing example
* feat: add config validation
* test: update CI configs, use only node 8

Author: daviddias

.aegir.js

@@ -5,10 +5,11 @@ const PeerId = require('peer-id')
 const pull = require('pull-stream')
 const parallel = require('async/parallel')
 
-const rawPeer = require('./test/fixtures/test-peer.json')
-const Node = require('./test/utils/bundle.node.js')
-const sigServer = require('libp2p-webrtc-star/src/sig-server')
 const WebSocketStarRendezvous = require('libp2p-websocket-star-rendezvous')
+const sigServer = require('libp2p-webrtc-star/src/sig-server')
+
+const rawPeer = require('./test/fixtures/test-peer.json')
+const Node = require('./test/utils/bundle-nodejs.js')
 
 let wrtcRendezvous
 let wsRendezvous
@@ -21,7 +22,9 @@ const before = (done) => {
         port: 15555
         // cryptoChallenge: true TODO: needs https://github.com/libp2p/js-libp2p-webrtc-star/issues/128
       }, (err, server) => {
-        if (err) { return cb(err) }
+        if (err) {
+          return cb(err)
+        }
         wrtcRendezvous = server
         cb()
       })
@@ -33,7 +36,9 @@ const before = (done) => {
         strictMultiaddr: false,
         cryptoChallenge: true
       }, (err, _server) => {
-        if (err) { return cb(err) }
+        if (err) {
+          return cb(err)
+        }
         wsRendezvous = _server
         cb()
       })
@@ -47,7 +52,9 @@ const before = (done) => {
 
         peer.multiaddrs.add('/ip4/127.0.0.1/tcp/9200/ws')
 
-        node = new Node(peer)
+        node = new Node({
+          peerInfo: peer
+        })
         node.handle('/echo/1.0.0', (protocol, conn) => pull(conn, conn))
         node.start(cb)
       })
@@ -56,11 +63,11 @@ const before = (done) => {
 }
 
 const after = (done) => {
-  setTimeout(() => parallel(
-    [node, wrtcRendezvous, wsRendezvous].map((s) => {
-      return (cb) => s.stop(cb)
-    })
-   , done), 2000)
+  setTimeout(() =>
+    parallel(
+      [node, wrtcRendezvous, wsRendezvous].map((s) => (cb) => s.stop(cb)),
+      done),
+  2000)
 }
 
 module.exports = {

.travis.yml

@@ -103,47 +103,83 @@ libp2p becomes very simple and basically acts as a glue for every module that co
 ```JavaScript
 // Creating a bundle that adds:
 //   transport: websockets + tcp
-//   stream-muxing: SPDY
+//   stream-muxing: spdy & mplex
 //   crypto-channel: secio
 //   discovery: multicast-dns
 
 const libp2p = require('libp2p')
 const TCP = require('libp2p-tcp')
 const WS = require('libp2p-websockets')
-const spdy = require('libp2p-spdy')
-const secio = require('libp2p-secio')
+const SPDY = require('libp2p-spdy')
+const MPLEX = require('libp2p-mplex')
+const SECIO = require('libp2p-secio')
 const MulticastDNS = require('libp2p-mdns')
 const DHT = require('libp2p-kad-dht')
+const defaultsDeep = require('@nodeutils/defaults-deep')
 
 class Node extends libp2p {
-  constructor (peerInfo, peerBook, options) {
-    options = options || {}
-
-    const modules = {
-      transport: [
-        new TCP(),
-        new WS()
-      ],
-      connection: {
-        muxer: [
-          spdy
+  constructor (_peerInfo, _peerBook, _options) {
+    const defaults = {
+      peerInfo: _peerInfo             // The Identity of your Peer
+      peerBook: _peerBook,            // Where peers get tracked, if undefined libp2p will create one instance
+
+      // The libp2p modules for this libp2p bundle
+      modules: {
+        transport: [
+          TCP,
+          new WS()                    // It can take instances too!
         ],
-        crypto: [
-          secio
+        streamMuxer: [
+          SPDY,
+          MPLEX
+        ],
+        connEncryption: [
+          SECIO
         ]
+        peerDiscovery: [
+          MulticastDNS
+        ],
+        peerRouting: {},              // Currently both peerRouting and contentRouting are patched through the DHT,
+        contentRouting: {}            // this will change once we factor that into two modules, for now do the following line:
+        dht: DHT                      // DHT enables PeerRouting, ContentRouting and DHT itself components
+      },
+
+      // libp2p config options (typically found on a config.json)
+      config: {                       // The config object is the part of the config that can go into a file, config.json.
+        peerDiscovery: {
+          mdns: {                     // mdns options
+            interval: 1000            // ms
+            enabled: true
+          },
+          webrtcStar: {               // webrtc-star options
+            interval: 1000            // ms
+            enabled: false
+          }
+          // .. other discovery module options.
+        },
+        peerRouting: {},
+        contentRouting: {},
+        relay: {                      // Circuit Relay options
+          enabled: false,
+          hop: {
+            enabled: false,
+            active: false
+          }
+        }
+        // Enable/Disable Experimental features
+        EXPERIMENTAL: {               // Experimental features ("behind a flag")
+          pubsub: false,
+          dht: false
+        }
       },
-      discovery: [
-        new MulticastDNS(peerInfo)
-      ],
-      // DHT is passed as its own enabling PeerRouting, ContentRouting and DHT itself components
-      dht: DHT
     }
 
-    super(modules, peerInfo, peerBook, options)
+    // overload any defaults of your bundle using https://github.com/nodeutils/defaults-deep
+    super(defaultsDeep(_options, defaults))
   }
 }
 
-// Now all the nodes you create, will have TCP, WebSockets, SPDY, SECIO and MulticastDNS support.
+// Now all the nodes you create, will have TCP, WebSockets, SPDY, MPLEX, SECIO and MulticastDNS support.
 ```
 
 ### API

README.md

@@ -1,2 +1,2 @@
 // Warning: This file is automatically synced from https://github.com/ipfs/ci-sync so if you want to change it, please change it there and ask someone to sync all repositories.
-javascript()
+javascript(['nodejs_versions': ['8.11.3']])

ci/Jenkinsfile

@@ -1,6 +1,6 @@
 machine:
   node:
-    version: 8.11.1
+    version: 8.11.3
 
 test:
   post:

circle.yml

@@ -1 +1,13 @@
 # Chat example with libp2p
+
+This example creates a simple chat app in your terminal.
+
+## Setup
+1. Install the modules, `npm install`.
+2. Open 2 terminal windows in the `./src` directory.
+
+## Running
+1. Run the listener in window 1, `node listener.js`
+2. Run the dialer in window 2, `node dialer.js`
+3. Type a message in either window and hit _enter_
+4. Tell youself secrets to your hearts content!

examples/chat/README.md

@@ -31,7 +31,9 @@ async.parallel([
   if (err) throw err
   const peerDialer = new PeerInfo(ids[0])
   peerDialer.multiaddrs.add('/ip4/0.0.0.0/tcp/0')
-  const nodeDialer = new Node(peerDialer)
+  const nodeDialer = new Node({
+    peerInfo: peerDialer
+  })
 
   const peerListener = new PeerInfo(ids[1])
   idListener = ids[1]

examples/chat/src/dialer.js

@@ -3,11 +3,12 @@
 const TCP = require('libp2p-tcp')
 const MulticastDNS = require('libp2p-mdns')
 const WS = require('libp2p-websockets')
-const Railing = require('libp2p-railing')
+const Bootstrap = require('libp2p-railing')
 const spdy = require('libp2p-spdy')
 const KadDHT = require('libp2p-kad-dht')
 const mplex = require('libp2p-mplex')
 const secio = require('libp2p-secio')
+const defaultsDeep = require('@nodeutils/defaults-deep')
 const libp2p = require('../../..')
 
 function mapMuxers (list) {
@@ -36,44 +37,40 @@ function getMuxers (muxers) {
 }
 
 class Node extends libp2p {
-  constructor (peerInfo, peerBook, options) {
-    options = options || {}
-
-    const modules = {
-      transport: [
-        new TCP(),
-        new WS()
-      ],
-      connection: {
-        muxer: getMuxers(options.muxer),
-        crypto: [ secio ]
+  constructor (_options) {
+    const defaults = {
+      modules: {
+        transport: [
+          TCP,
+          WS
+        ],
+        streamMuxer: getMuxers(_options.muxer),
+        connEncryption: [ secio ],
+        peerDiscovery: [
+          MulticastDNS,
+          Bootstrap
+        ],
+        dht: KadDHT
       },
-      discovery: []
-    }
-
-    if (options.dht) {
-      modules.DHT = KadDHT
-    }
-
-    if (options.mdns) {
-      const mdns = new MulticastDNS(peerInfo, 'ipfs.local')
-      modules.discovery.push(mdns)
-    }
-
-    if (options.bootstrap) {
-      const r = new Railing(options.bootstrap)
-      modules.discovery.push(r)
-    }
-
-    if (options.modules && options.modules.transport) {
-      options.modules.transport.forEach((t) => modules.transport.push(t))
-    }
-
-    if (options.modules && options.modules.discovery) {
-      options.modules.discovery.forEach((d) => modules.discovery.push(d))
+      config: {
+        peerDiscovery: {
+          mdns: {
+            interval: 10000,
+            enabled: false
+          },
+          bootstrap: {
+            interval: 10000,
+            enabled: false,
+            list: _options.bootstrapList
+          }
+        },
+        dht: {
+          kBucketSize: 20
+        }
+      }
     }
 
-    super(modules, peerInfo, peerBook, options)
+    super(defaultsDeep(_options, defaults))
   }
 }
 

examples/chat/src/libp2p-bundle.js

@@ -14,14 +14,16 @@ PeerId.createFromJSON(require('./peer-id-listener'), (err, idListener) => {
   }
   const peerListener = new PeerInfo(idListener)
   peerListener.multiaddrs.add('/ip4/0.0.0.0/tcp/10333')
-  const nodeListener = new Node(peerListener)
+  const nodeListener = new Node({
+    peerInfo: peerListener
+  })
 
   nodeListener.start((err) => {
     if (err) {
       throw err
     }
 
-    nodeListener.switch.on('peer-mux-established', (peerInfo) => {
+    nodeListener.on('peer:connect', (peerInfo) => {
       console.log(peerInfo.id.toB58String())
     })