Add loopback support to puter.peer (#3425)

* allow setting port instead of invite code in puter.peer

* fix grabbing fallbackice under wrong response

src/puter-js/src/modules/Peer.js

@@ -54,7 +54,7 @@ class PuterPeerServer extends EventTarget {
         this.#wsconn = new WebSocket(peerConfig.signallerUrl);
     }
 
-    async start () {
+    async start(options = {}) {
         await new Promise((resolve, reject) => {
             this.#wsconn.onopen = resolve;
             this.#wsconn.onerror = reject;
@@ -77,6 +77,7 @@ class PuterPeerServer extends EventTarget {
                 server: {
                     create: {
                         authToken: this.#peerConfig.authToken,
+                        port: options.port,
                     },
                 },
             }),
@@ -223,7 +224,7 @@ class PuterPeerConnection extends EventTarget {
         }
     }
 
-    async connect (invitecode) {
+    async connect(invitecode, options = {}) {
         this.#wsconn = new WebSocket(this.#peerConfig.signallerUrl);
         await new Promise((resolve, reject) => {
             this.#wsconn.onopen = resolve;
@@ -245,6 +246,7 @@ class PuterPeerConnection extends EventTarget {
                     connect: {
                         authToken: this.#peerConfig.authToken,
                         invitecode,
+                        port: options.port,
                     },
                 },
             }),
@@ -404,8 +406,7 @@ class Peer {
             return;
         }
 
-        const { iceServers, ttl, fallbackIce } = await response.json();
-        this.#fallbackIceServers = fallbackIce;
+        const { iceServers, ttl } = await response.json();
         this.#turnServers = iceServers;
         this.#turnTTL = ttl;
         this.#turnStartedAt = Date.now();
@@ -417,7 +418,8 @@ class Peer {
         if ( ! response.ok ) {
             throw new Error('Failed to get signaller info from Puter.');
         }
-        const { url } = await response.json();
+        const { url, fallbackIce } = await response.json();
+        this.#fallbackIceServers = fallbackIce;
         this.#signallerUrl = url;
     }
 
@@ -456,7 +458,7 @@ class Peer {
         await this.#authenticateForPeerAction('create a server');
         const peerConfig = await this.#resolvePeerConfig(options);
         const server = new PuterPeerServer(peerConfig);
-        await server.start();
+        await server.start(options);
         return server;
     }
 
@@ -464,7 +466,7 @@ class Peer {
         await this.#authenticateForPeerAction('connect to a server');
         const peerConfig = await this.#resolvePeerConfig(options);
         const conn = new PuterPeerConnection(peerConfig);
-        await conn.connect(invitecode);
+        await conn.connect(invitecode, options);
         return conn;
     }
 }