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

examples/chat/src/dialer.js

@@ -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/libp2p-bundle.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: []
+      config: {
+        peerDiscovery: {
+          mdns: {
+            interval: 10000,
+            enabled: false
+          },
+          bootstrap: {
+            interval: 10000,
+            enabled: false,
+            list: _options.bootstrapList
+          }
+        },
+        dht: {
+          kBucketSize: 20
+        }
+      }
     }
 
-    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))
-    }
-
-    super(modules, peerInfo, peerBook, options)
+    super(defaultsDeep(_options, defaults))
   }
 }
 

examples/chat/src/listener.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())
     })