feat: adding circuit relaying

package.json

@@ -66,9 +66,21 @@
     "pull-serializer": "^0.3.2",
     "pull-stream": "^3.6.1",
     "safe-buffer": "^5.1.1",
+    "sinon": "^2.3.6",
     "electron-webrtc": "^0.3.0",
     "wrtc": "0.0.62"
   },
+  "dependencies": {
+    "async": "^2.5.0",
+    "libp2p-ping": "~0.4.0",
+    "libp2p-swarm": "~0.29.1",
+    "libp2p-circuit": "~0.0.1",
+    "mafmt": "^2.1.8",
+    "multiaddr": "^2.3.0",
+    "peer-book": "~0.4.0",
+    "peer-id": "~0.8.7",
+    "peer-info": "~0.9.2"
+  },
   "contributors": [
     "Chris Bratlien <chrisbratlien@gmail.com>",
     "Daijiro Wachi <daijiro.wachi@gmail.com>",

src/index.js

@@ -14,6 +14,7 @@ const PeerInfo = require('peer-info')
 const PeerBook = require('peer-book')
 const mafmt = require('mafmt')
 const multiaddr = require('multiaddr')
+const Circuit = require('libp2p-circuit')
 
 exports = module.exports
 
@@ -31,6 +32,7 @@ class Node extends EventEmitter {
     _options = _options || {}
 
     this._isStarted = false
+    this.relayCircuit = null
 
     this.swarm = new Swarm(this.peerInfo, this.peerBook)
 
@@ -43,6 +45,24 @@ class Node extends EventEmitter {
       // If muxer exists, we can use Identify
       this.swarm.connection.reuse()
 
+      // enable circuit relaying
+      // TODO: move defaults elsewhere
+      _options.Relay = Object.assign({
+        Circuit: {
+          Enabled: false,
+          Active: false
+        },
+        DialMode: 'onion'
+      }, _options.Relay)
+
+      if (_options.Relay.Circuit.Enabled) {
+        this.relayCircuit = new Circuit.Relay(_options.Relay.Circuit)
+        this.relayCircuit.mount(this.swarm)
+      }
+
+      // If muxer exists, we can use Relay for listening/dialing
+      this.swarm.connection.relay(_options.Relay)
+
       // Received incommind dial and muxer upgrade happened,
       // reuse this muxed connection
       this.swarm.on('peer-mux-established', (peerInfo) => {

test/node.js

@@ -8,3 +8,4 @@ require('./nodejs-bundle/stream-muxing')
 require('./nodejs-bundle/discovery')
 require('./nodejs-bundle/peer-routing')
 require('./nodejs-bundle/content-routing')
+require('./nodejs-bundle/circuit/circuit')