feat: allow transport options to be passed on creation (#524)

* feat: allow transport options to be passed on creation

* fix: only add circuit transport if enabled

* chore: fix lint

src/config.js

@@ -41,7 +41,8 @@ const DefaultConfig = {
         enabled: false,
         active: false
       }
-    }
+    },
+    transport: {}
   }
 }
 

src/index.js

@@ -114,10 +114,14 @@ class Libp2p extends EventEmitter {
     })
 
     this._modules.transport.forEach((Transport) => {
-      this.transportManager.add(Transport.prototype[Symbol.toStringTag], Transport)
+      const key = Transport.prototype[Symbol.toStringTag]
+      const transportOptions = this._config.transport[key]
+      this.transportManager.add(key, Transport, transportOptions)
     })
-    // TODO: enable relay if enabled
-    this.transportManager.add(Circuit.prototype[Symbol.toStringTag], Circuit)
+
+    if (this._config.relay.enabled) {
+      this.transportManager.add(Circuit.prototype[Symbol.toStringTag], Circuit)
+    }
 
     // Attach stream multiplexers
     if (this._modules.streamMuxer) {

src/transport-manager.js

@@ -26,9 +26,10 @@ class TransportManager {
    *
    * @param {String} key
    * @param {Transport} Transport
+   * @param {*} transportOptions Additional options to pass to the transport
    * @returns {void}
    */
-  add (key, Transport) {
+  add (key, Transport, transportOptions = {}) {
     log('adding %s', key)
     if (!key) {
       throw errCode(new Error(`Transport must have a valid key, was given '${key}'`), codes.ERR_INVALID_KEY)
@@ -38,6 +39,7 @@ class TransportManager {
     }
 
     const transport = new Transport({
+      ...transportOptions,
       libp2p: this.libp2p,
       upgrader: this.upgrader
     })