feat: implement circuit v2 (#1533)

Implements circuit relay v2

See the [relay section of the configuration](https://github.com/libp2p/js-libp2p/blob/master/doc/CONFIGURATION.md#setup-with-relay) for how to configure it.

Fixes #1029

---------

Co-authored-by: achingbrain <alex@achingbrain.net>

.gitignore

@@ -4,3 +4,4 @@ dist
 .coverage
 package-lock.json
 yarn.lock
+.vscode

doc/CONFIGURATION.md

@@ -19,7 +19,7 @@
     - [Customizing DHT](#customizing-dht)
     - [Setup with Content and Peer Routing](#setup-with-content-and-peer-routing)
     - [Setup with Relay](#setup-with-relay)
-    - [Setup with Auto Relay](#setup-with-auto-relay)
+    - [Setup with Automatic Reservations](#setup-with-automatic-reservations)
     - [Setup with Keychain](#setup-with-keychain)
     - [Configuring Dialing](#configuring-dialing)
     - [Configuring Connection Manager](#configuring-connection-manager)
@@ -433,22 +433,31 @@ const node = await createLibp2p({
   transports: [tcp()],
   streamMuxers: [mplex()],
   connectionEncryption: [noise()],
-  relay: {                   // Circuit Relay options (this config is part of libp2p core configurations)
+  relay: {                   // Circuit Relay options
     enabled: true,           // Allows you to dial and accept relayed connections. Does not make you a relay.
     hop: {
-      enabled: true,         // Allows you to be a relay for other peers
-      active: true           // You will attempt to dial destination peers if you are not connected to them
+      enabled: true,         // Allows you to be a relay for other peers.
+      timeout: 30 * 1000,    // Incoming hop requests must complete within this timeout
+      applyConnectionLimits: true // Apply data/duration limits to relayed connections (default: true)
+      limit: {
+        duration: 120 * 1000 // the maximum amount of ms a relayed connection can be open for
+        data: BigInt(1 << 17) // the maximum amount of data that can be transferred over a relayed connection
+      }
     },
     advertise: {
+      enabled: true,         // Allows you to disable advertising the Hop service
       bootDelay: 15 * 60 * 1000, // Delay before HOP relay service is advertised on the network
-      enabled: true,          // Allows you to disable the advertise of the Hop service
-      ttl: 30 * 60 * 1000     // Delay Between HOP relay service advertisements on the network
+      ttl: 30 * 60 * 1000    // Delay Between HOP relay service advertisements on the network
+    },
+    reservationManager: {    // the reservation manager creates reservations on discovered relays
+      enabled: true,         // enable the reservation manager, default: false
+      maxReservations: 1     // the maximum number of relays to create reservations on
     }
   }
 })
 ```
 
-#### Setup with Auto Relay
+#### Setup with Automatic Reservations
 
 ```js
 import { createLibp2p } from 'libp2p'
@@ -462,9 +471,9 @@ const node = await createLibp2p({
   connectionEncryption: [noise()]
   relay: {                   // Circuit Relay options (this config is part of libp2p core configurations)
     enabled: true,           // Allows you to dial and accept relayed connections. Does not make you a relay.
-    autoRelay: {
+    reservationManager: {
       enabled: true,         // Allows you to bind to relays with HOP enabled for improving node dialability
-      maxListeners: 2         // Configure maximum number of HOP relays to use
+      maxListeners: 2        // Configure maximum number of HOP relays to use
     }
   }
 })

package.json

@@ -106,7 +106,7 @@
     "@libp2p/interface-libp2p": "^1.0.0",
     "@libp2p/interface-metrics": "^4.0.0",
     "@libp2p/interface-peer-discovery": "^1.0.1",
-    "@libp2p/interface-peer-id": "^2.0.0",
+    "@libp2p/interface-peer-id": "^2.0.1",
     "@libp2p/interface-peer-info": "^1.0.3",
     "@libp2p/interface-peer-routing": "^1.0.1",
     "@libp2p/interface-peer-store": "^1.2.2",
@@ -122,7 +122,7 @@
     "@libp2p/peer-id": "^2.0.0",
     "@libp2p/peer-id-factory": "^2.0.0",
     "@libp2p/peer-record": "^5.0.0",
-    "@libp2p/peer-store": "^6.0.0",
+    "@libp2p/peer-store": "^6.0.4",
     "@libp2p/tracked-map": "^3.0.0",
     "@libp2p/utils": "^3.0.2",
     "@multiformats/mafmt": "^11.0.2",
@@ -143,11 +143,13 @@
     "it-map": "^2.0.0",
     "it-merge": "^2.0.0",
     "it-pair": "^2.0.2",
+    "it-pb-stream": "^3.0.0",
     "it-pipe": "^2.0.3",
     "it-sort": "^2.0.0",
     "it-stream-types": "^1.0.4",
     "merge-options": "^3.0.4",
     "multiformats": "^11.0.0",
+    "p-defer": "^4.0.0",
     "p-fifo": "^1.0.0",
     "p-retry": "^5.0.0",
     "private-ip": "^3.0.0",
@@ -162,17 +164,18 @@
     "xsalsa20": "^1.1.0"
   },
   "devDependencies": {
+    "@chainsafe/libp2p-gossipsub": "^6.2.0",
     "@chainsafe/libp2p-noise": "^11.0.0",
     "@chainsafe/libp2p-yamux": "^3.0.3",
     "@libp2p/bootstrap": "^6.0.0",
-    "@libp2p/daemon-client": "^4.0.1",
-    "@libp2p/daemon-server": "^4.0.1",
+    "@libp2p/daemon-client": "^5.0.0",
+    "@libp2p/daemon-server": "^4.1.0",
     "@libp2p/floodsub": "^6.0.0",
     "@libp2p/interface-compliance-tests": "^3.0.2",
     "@libp2p/interface-connection-compliance-tests": "^2.0.3",
     "@libp2p/interface-connection-encrypter-compliance-tests": "^4.0.0",
     "@libp2p/interface-mocks": "^9.0.0",
-    "@libp2p/interop": "^4.0.0",
+    "@libp2p/interop": "^7.0.0",
     "@libp2p/kad-dht": "^7.0.0",
     "@libp2p/mdns": "^6.0.0",
     "@libp2p/mplex": "^7.0.0",
@@ -188,11 +191,10 @@
     "cborg": "^1.8.1",
     "delay": "^5.0.0",
     "execa": "^7.0.0",
-    "go-libp2p": "^0.0.6",
+    "go-libp2p": "^1.0.1",
     "it-pushable": "^3.0.0",
     "it-to-buffer": "^3.0.0",
     "npm-run-all": "^4.1.5",
-    "p-defer": "^4.0.0",
     "p-event": "^5.0.1",
     "p-times": "^4.0.0",
     "p-wait-for": "^5.0.0",