fix: pass libp2p to discovery services (#597)

* fix: include libp2p in the options passed to discovery creation

* fix: handle multiple peer addresses in get multiaddrs for peers

* test(peer-store): add test to verify returned relay multiaddrs

Author: jacobheun

src/index.js

@@ -478,7 +478,7 @@ class Libp2p extends EventEmitter {
         let discoveryService
 
         if (typeof DiscoveryService === 'function') {
-          discoveryService = new DiscoveryService(Object.assign({}, config, { peerInfo: this.peerInfo }))
+          discoveryService = new DiscoveryService(Object.assign({}, config, { peerInfo: this.peerInfo, libp2p: this }))
         } else {
           discoveryService = DiscoveryService
         }

src/peer-store/index.js

@@ -243,7 +243,8 @@ class PeerStore extends EventEmitter {
    */
   multiaddrsForPeer (peer) {
     return this.put(peer, true).multiaddrs.toArray().map(addr => {
-      if (addr.getPeerId()) return addr
+      const idString = addr.getPeerId()
+      if (idString && idString === peer.id.toB58String()) return addr
       return addr.encapsulate(`/p2p/${peer.id.toB58String()}`)
     })
   }

test/peer-store/peer-store.spec.js

@@ -161,19 +161,22 @@ describe('peer-store', () => {
     expect(peerStore.peers.size).to.equal(0)
   })
 
-  it('should be able to remove a peer from store through its b58str id', async () => {
-    const [peerInfo] = await peerUtils.createPeerInfo()
+  it('should be able to get the multiaddrs for a peer', async () => {
+    const [peerInfo, relayInfo] = await peerUtils.createPeerInfo({ number: 2 })
     const id = peerInfo.id
     const ma1 = multiaddr('/ip4/127.0.0.1/tcp/4001')
     const ma2 = multiaddr('/ip4/127.0.0.1/tcp/4002/ws')
+    const ma3 = multiaddr(`/ip4/127.0.0.1/tcp/4003/ws/p2p/${relayInfo.id.toB58String()}/p2p-circuit`)
 
     peerInfo.multiaddrs.add(ma1)
     peerInfo.multiaddrs.add(ma2)
+    peerInfo.multiaddrs.add(ma3)
 
     const multiaddrs = peerStore.multiaddrsForPeer(peerInfo)
     const expectedAddrs = [
       ma1.encapsulate(`/p2p/${id.toB58String()}`),
-      ma2.encapsulate(`/p2p/${id.toB58String()}`)
+      ma2.encapsulate(`/p2p/${id.toB58String()}`),
+      ma3.encapsulate(`/p2p/${id.toB58String()}`)
     ]
 
     expect(multiaddrs).to.eql(expectedAddrs)