0.4.1

Critical bug fix: lastIceTimestamp was initialized to Date.now(),
causing the first poll to miss early ICE candidates that were sent
before polling started. This resulted in ICE failure.

Now initializes to 0 so the first poll retrieves ALL candidates.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -1,60 +1,453 @@
-# Rondevu
-
-🎯 Meet WebRTC peers by topic, by peer ID, or by connection ID.
-
-## @xtr-dev/rondevu-client
+# @xtr-dev/rondevu-client
 
 [![npm version](https://img.shields.io/npm/v/@xtr-dev/rondevu-client)](https://www.npmjs.com/package/@xtr-dev/rondevu-client)
 
-TypeScript Rondevu HTTP and WebRTC client, for simple peer discovery and connection.
+🌐 **Topic-based peer discovery and WebRTC signaling client**
 
-### Install
+TypeScript/JavaScript client for Rondevu, providing topic-based peer discovery, stateless authentication, and complete WebRTC signaling.
+
+**Related repositories:**
+- [rondevu-server](https://github.com/xtr-dev/rondevu) - HTTP signaling server
+- [rondevu-demo](https://rondevu-demo.pages.dev) - Interactive demo
+
+---
+
+## Features
+
+- **Topic-Based Discovery**: Find peers by topics (e.g., torrent infohashes)
+- **Stateless Authentication**: No server-side sessions, portable credentials
+- **Bloom Filters**: Efficient peer exclusion for repeated discoveries
+- **Multi-Offer Management**: Create and manage multiple offers per peer
+- **Complete WebRTC Signaling**: Full offer/answer and ICE candidate exchange
+- **TypeScript**: Full type safety and autocomplete
+
+## Install
 
 ```bash
 npm install @xtr-dev/rondevu-client
 ```
 
-### Usage
+## Quick Start
+
+The easiest way to use Rondevu is with the high-level `RondevuConnection` class, which handles all WebRTC connection complexity including offer/answer exchange, ICE candidates, and connection lifecycle.
+
+### Creating an Offer (Peer A)
 
 ```typescript
 import { Rondevu } from '@xtr-dev/rondevu-client';
 
-const rdv = new Rondevu({ baseUrl: 'https://server.com' });
+const client = new Rondevu({ baseUrl: 'https://api.ronde.vu' });
+await client.register();
 
-// Connect by topic
-const conn = await rdv.join('room');
+// Create a connection
+const conn = client.createConnection();
 
-// Or connect by ID
-const conn = await rdv.connect('meeting-123');
+// Set up event listeners
+conn.on('connected', () => {
+  console.log('Connected to peer!');
+});
 
-// Use the connection
-conn.on('connect', () => {
-  const channel = conn.dataChannel('chat');
-  channel.send('Hello!');
+conn.on('datachannel', (channel) => {
+  console.log('Data channel ready');
+
+  channel.onmessage = (event) => {
+    console.log('Received:', event.data);
+  };
+
+  channel.send('Hello from peer A!');
+});
+
+// Create offer and advertise on topics
+const offerId = await conn.createOffer({
+  topics: ['my-app', 'room-123'],
+  ttl: 300000  // 5 minutes
+});
+
+console.log('Offer created:', offerId);
+console.log('Share these topics with peers:', ['my-app', 'room-123']);
+```
+
+### Answering an Offer (Peer B)
+
+```typescript
+import { Rondevu } from '@xtr-dev/rondevu-client';
+
+const client = new Rondevu({ baseUrl: 'https://api.ronde.vu' });
+await client.register();
+
+// Discover offers by topic
+const offers = await client.offers.findByTopic('my-app', { limit: 10 });
+
+if (offers.length > 0) {
+  const offer = offers[0];
+
+  // Create connection
+  const conn = client.createConnection();
+
+  // Set up event listeners
+  conn.on('connecting', () => {
+    console.log('Connecting...');
+  });
+
+  conn.on('connected', () => {
+    console.log('Connected!');
+  });
+
+  conn.on('datachannel', (channel) => {
+    console.log('Data channel ready');
+
+    channel.onmessage = (event) => {
+      console.log('Received:', event.data);
+    };
+
+    channel.send('Hello from peer B!');
+  });
+
+  // Answer the offer
+  await conn.answer(offer.id, offer.sdp);
+}
+```
+
+### Connection Events
+
+```typescript
+conn.on('connecting', () => {
+  // Connection is being established
+});
+
+conn.on('connected', () => {
+  // Connection established successfully
+});
+
+conn.on('disconnected', () => {
+  // Connection lost or closed
+});
+
+conn.on('error', (error) => {
+  // An error occurred
+  console.error('Connection error:', error);
+});
+
+conn.on('datachannel', (channel) => {
+  // Data channel is ready to use
+});
+
+conn.on('track', (event) => {
+  // Media track received (for audio/video streaming)
+  const stream = event.streams[0];
+  videoElement.srcObject = stream;
 });
 ```
 
-### API
+### Adding Media Tracks
 
-**Main Methods:**
-- `rdv.join(topic)` - Auto-connect to first peer in topic
-- `rdv.join(topic, {filter})` - Connect to specific peer by ID
-- `rdv.create(id, topic)` - Create connection for others to join
-- `rdv.connect(id)` - Join connection by ID
+```typescript
+// Get user's camera/microphone
+const stream = await navigator.mediaDevices.getUserMedia({
+  video: true,
+  audio: true
+});
 
-**Connection Events:**
-- `connect` - Connection established
-- `disconnect` - Connection closed
-- `datachannel` - Remote peer created data channel
-- `stream` - Remote media stream received
-- `error` - Error occurred
+// Add tracks to connection
+stream.getTracks().forEach(track => {
+  conn.addTrack(track, stream);
+});
+```
 
-**Connection Methods:**
-- `conn.dataChannel(label)` - Get or create data channel
-- `conn.addStream(stream)` - Add media stream
-- `conn.getPeerConnection()` - Get underlying RTCPeerConnection
-- `conn.close()` - Close connection
+### Connection Properties
 
-### License
+```typescript
+// Get connection state
+console.log(conn.connectionState); // 'connecting', 'connected', 'disconnected', etc.
+
+// Get offer ID
+console.log(conn.id);
+
+// Get data channel
+console.log(conn.channel);
+```
+
+### Closing a Connection
+
+```typescript
+conn.close();
+```
+
+## Platform-Specific Setup
+
+### Node.js 18+ (with native fetch)
+
+Works out of the box - no additional setup needed.
+
+### Node.js < 18 (without native fetch)
+
+Install node-fetch and provide it to the client:
+
+```bash
+npm install node-fetch
+```
+
+```typescript
+import { Rondevu } from '@xtr-dev/rondevu-client';
+import fetch from 'node-fetch';
+
+const client = new Rondevu({
+  baseUrl: 'https://api.ronde.vu',
+  fetch: fetch as any
+});
+```
+
+### Deno
+
+```typescript
+import { Rondevu } from 'npm:@xtr-dev/rondevu-client';
+
+const client = new Rondevu({
+  baseUrl: 'https://api.ronde.vu'
+});
+```
+
+### Bun
+
+Works out of the box - no additional setup needed.
+
+### Cloudflare Workers
+
+```typescript
+import { Rondevu } from '@xtr-dev/rondevu-client';
+
+export default {
+  async fetch(request: Request, env: Env) {
+    const client = new Rondevu({
+      baseUrl: 'https://api.ronde.vu'
+    });
+
+    const creds = await client.register();
+    return new Response(JSON.stringify(creds));
+  }
+};
+```
+
+## Low-Level API Usage
+
+For advanced use cases where you need direct control over the signaling process, you can use the low-level API:
+
+```typescript
+import { Rondevu, BloomFilter } from '@xtr-dev/rondevu-client';
+
+const client = new Rondevu({ baseUrl: 'https://api.ronde.vu' });
+
+// Register and get credentials
+const creds = await client.register();
+console.log('Peer ID:', creds.peerId);
+
+// Save credentials for later use
+localStorage.setItem('rondevu-creds', JSON.stringify(creds));
+
+// Create offer with topics
+const offers = await client.offers.create([{
+  sdp: 'v=0...',  // Your WebRTC offer SDP
+  topics: ['movie-xyz', 'hd-content'],
+  ttl: 300000  // 5 minutes
+}]);
+
+// Discover peers by topic
+const discovered = await client.offers.findByTopic('movie-xyz', {
+  limit: 50
+});
+
+console.log(`Found ${discovered.length} peers`);
+
+// Use bloom filter to exclude known peers
+const knownPeers = new Set(['peer-id-1', 'peer-id-2']);
+const bloom = new BloomFilter(1024, 3);
+knownPeers.forEach(id => bloom.add(id));
+
+const newPeers = await client.offers.findByTopic('movie-xyz', {
+  bloomFilter: bloom.toBytes(),
+  limit: 50
+});
+```
+
+## API Reference
+
+### Authentication
+
+#### `client.register()`
+Register a new peer and receive credentials.
+
+```typescript
+const creds = await client.register();
+// { peerId: '...', secret: '...' }
+```
+
+### Topics
+
+#### `client.offers.getTopics(options?)`
+List all topics with active peer counts (paginated).
+
+```typescript
+const result = await client.offers.getTopics({
+  limit: 50,
+  offset: 0
+});
+
+// {
+//   topics: [
+//     { topic: 'movie-xyz', activePeers: 42 },
+//     { topic: 'torrent-abc', activePeers: 15 }
+//   ],
+//   total: 123,
+//   limit: 50,
+//   offset: 0
+// }
+```
+
+### Offers
+
+#### `client.offers.create(offers)`
+Create one or more offers with topics.
+
+```typescript
+const offers = await client.offers.create([
+  {
+    sdp: 'v=0...',
+    topics: ['topic-1', 'topic-2'],
+    ttl: 300000  // optional, default 5 minutes
+  }
+]);
+```
+
+#### `client.offers.findByTopic(topic, options?)`
+Find offers by topic with optional bloom filter.
+
+```typescript
+const offers = await client.offers.findByTopic('movie-xyz', {
+  limit: 50,
+  bloomFilter: bloomBytes  // optional
+});
+```
+
+#### `client.offers.getMine()`
+Get all offers owned by the authenticated peer.
+
+```typescript
+const myOffers = await client.offers.getMine();
+```
+
+#### `client.offers.heartbeat(offerId)`
+Update last_seen timestamp for an offer.
+
+```typescript
+await client.offers.heartbeat(offerId);
+```
+
+#### `client.offers.delete(offerId)`
+Delete a specific offer.
+
+```typescript
+await client.offers.delete(offerId);
+```
+
+#### `client.offers.answer(offerId, sdp)`
+Answer an offer (locks it to answerer).
+
+```typescript
+await client.offers.answer(offerId, answerSdp);
+```
+
+#### `client.offers.getAnswers()`
+Poll for answers to your offers.
+
+```typescript
+const answers = await client.offers.getAnswers();
+```
+
+### ICE Candidates
+
+#### `client.offers.addIceCandidates(offerId, candidates)`
+Post ICE candidates for an offer.
+
+```typescript
+await client.offers.addIceCandidates(offerId, [
+  'candidate:1 1 UDP...'
+]);
+```
+
+#### `client.offers.getIceCandidates(offerId, since?)`
+Get ICE candidates from the other peer.
+
+```typescript
+const candidates = await client.offers.getIceCandidates(offerId);
+```
+
+### Bloom Filter
+
+```typescript
+import { BloomFilter } from '@xtr-dev/rondevu-client';
+
+// Create filter: size=1024 bits, hash=3 functions
+const bloom = new BloomFilter(1024, 3);
+
+// Add items
+bloom.add('peer-id-1');
+bloom.add('peer-id-2');
+
+// Test membership
+bloom.test('peer-id-1');  // true (probably)
+bloom.test('unknown');    // false (definitely)
+
+// Export for API
+const bytes = bloom.toBytes();
+```
+
+## TypeScript
+
+All types are exported:
+
+```typescript
+import type {
+  Credentials,
+  Offer,
+  CreateOfferRequest,
+  TopicInfo,
+  IceCandidate,
+  FetchFunction,
+  RondevuOptions,
+  ConnectionOptions,
+  RondevuConnectionEvents
+} from '@xtr-dev/rondevu-client';
+```
+
+## Environment Compatibility
+
+The client library is designed to work across different JavaScript runtimes:
+
+| Environment | Native Fetch | Custom Fetch Needed |
+|-------------|--------------|---------------------|
+| Modern Browsers | ✅ Yes | ❌ No |
+| Node.js 18+ | ✅ Yes | ❌ No |
+| Node.js < 18 | ❌ No | ✅ Yes (node-fetch) |
+| Deno | ✅ Yes | ❌ No |
+| Bun | ✅ Yes | ❌ No |
+| Cloudflare Workers | ✅ Yes | ❌ No |
+
+**If your environment doesn't have native fetch:**
+
+```bash
+npm install node-fetch
+```
+
+```typescript
+import { Rondevu } from '@xtr-dev/rondevu-client';
+import fetch from 'node-fetch';
+
+const client = new Rondevu({
+  baseUrl: 'https://rondevu.xtrdev.workers.dev',
+  fetch: fetch as any
+});
+```
+
+## License
 
 MIT

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@xtr-dev/rondevu-client",
-  "version": "0.0.4",
-  "description": "TypeScript client for Rondevu peer signaling and discovery server",
+  "version": "0.4.1",
+  "description": "TypeScript client for Rondevu topic-based peer discovery and signaling server",
   "type": "module",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/auth.ts

@@ -0,0 +1,60 @@
+export interface Credentials {
+  peerId: string;
+  secret: string;
+}
+
+// Fetch-compatible function type
+export type FetchFunction = (
+  input: RequestInfo | URL,
+  init?: RequestInit
+) => Promise<Response>;
+
+export class RondevuAuth {
+  private fetchFn: FetchFunction;
+
+  constructor(
+    private baseUrl: string,
+    fetchFn?: FetchFunction
+  ) {
+    // Use provided fetch or fall back to global fetch
+    this.fetchFn = fetchFn || ((...args) => {
+      if (typeof globalThis.fetch === 'function') {
+        return globalThis.fetch(...args);
+      }
+      throw new Error(
+        'fetch is not available. Please provide a fetch implementation in the constructor options.'
+      );
+    });
+  }
+
+  /**
+   * Register a new peer and receive credentials
+   */
+  async register(): Promise<Credentials> {
+    const response = await this.fetchFn(`${this.baseUrl}/register`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({}),
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Registration failed: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return {
+      peerId: data.peerId,
+      secret: data.secret,
+    };
+  }
+
+  /**
+   * Create Authorization header value
+   */
+  static createAuthHeader(credentials: Credentials): string {
+    return `Bearer ${credentials.peerId}:${credentials.secret}`;
+  }
+}

src/bloom.ts

@@ -0,0 +1,83 @@
+// Declare Buffer for Node.js compatibility
+declare const Buffer: any;
+
+/**
+ * Simple bloom filter implementation for peer ID exclusion
+ * Uses multiple hash functions for better distribution
+ */
+export class BloomFilter {
+  private bits: Uint8Array;
+  private size: number;
+  private numHashes: number;
+
+  constructor(size: number = 1024, numHashes: number = 3) {
+    this.size = size;
+    this.numHashes = numHashes;
+    this.bits = new Uint8Array(Math.ceil(size / 8));
+  }
+
+  /**
+   * Add a peer ID to the filter
+   */
+  add(peerId: string): void {
+    for (let i = 0; i < this.numHashes; i++) {
+      const hash = this.hash(peerId, i);
+      const index = hash % this.size;
+      const byteIndex = Math.floor(index / 8);
+      const bitIndex = index % 8;
+      this.bits[byteIndex] |= 1 << bitIndex;
+    }
+  }
+
+  /**
+   * Test if peer ID might be in the filter
+   */
+  test(peerId: string): boolean {
+    for (let i = 0; i < this.numHashes; i++) {
+      const hash = this.hash(peerId, i);
+      const index = hash % this.size;
+      const byteIndex = Math.floor(index / 8);
+      const bitIndex = index % 8;
+      if (!(this.bits[byteIndex] & (1 << bitIndex))) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  /**
+   * Get raw bits for transmission
+   */
+  toBytes(): Uint8Array {
+    return this.bits;
+  }
+
+  /**
+   * Convert to base64 for URL parameters
+   */
+  toBase64(): string {
+    // Convert Uint8Array to regular array then to string
+    const binaryString = String.fromCharCode(...Array.from(this.bits));
+    // Use btoa for browser, or Buffer for Node.js
+    if (typeof btoa !== 'undefined') {
+      return btoa(binaryString);
+    } else if (typeof Buffer !== 'undefined') {
+      return Buffer.from(this.bits).toString('base64');
+    } else {
+      // Fallback: manual base64 encoding
+      throw new Error('No base64 encoding available');
+    }
+  }
+
+  /**
+   * Simple hash function (FNV-1a variant)
+   */
+  private hash(str: string, seed: number): number {
+    let hash = 2166136261 ^ seed;
+    for (let i = 0; i < str.length; i++) {
+      hash ^= str.charCodeAt(i);
+      hash += (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) + (hash << 24);
+    }
+    return hash >>> 0;
+  }
+}

src/client.ts

@@ -1,7 +1,5 @@
 import {
   RondevuClientOptions,
-  ListTopicsResponse,
-  ListSessionsResponse,
   CreateOfferRequest,
   CreateOfferResponse,
   AnswerRequest,
@@ -9,26 +7,25 @@ import {
   PollRequest,
   PollOffererResponse,
   PollAnswererResponse,
+  VersionResponse,
   HealthResponse,
   ErrorResponse,
   Side,
-} from './types';
+} from './types.js';
 
 /**
- * HTTP client for Rondevu peer signaling and discovery server
+ * HTTP API client for Rondevu peer signaling server
  */
-export class RondevuClient {
+export class RondevuAPI {
   private readonly baseUrl: string;
-  private readonly origin: string;
   private readonly fetchImpl: typeof fetch;
 
   /**
-   * Creates a new Rondevu client instance
+   * Creates a new Rondevu API client instance
    * @param options - Client configuration options
    */
   constructor(options: RondevuClientOptions) {
     this.baseUrl = options.baseUrl.replace(/\/$/, ''); // Remove trailing slash
-    this.origin = options.origin || new URL(this.baseUrl).origin;
     this.fetchImpl = options.fetch || globalThis.fetch.bind(globalThis);
   }
 
@@ -42,7 +39,6 @@ export class RondevuClient {
     const url = `${this.baseUrl}${endpoint}`;
 
     const headers: Record<string, string> = {
-      'Origin': this.origin,
       ...(options.headers as Record<string, string>),
     };
 
@@ -66,98 +62,67 @@ export class RondevuClient {
   }
 
   /**
-   * Lists all topics with peer counts
+   * Gets server version information
    *
-   * @param page - Page number (starting from 1)
-   * @param limit - Results per page (max 1000)
-   * @returns List of topics with pagination info
+   * @returns Server version
    *
    * @example
    * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
-   * const { topics, pagination } = await client.listTopics();
-   * console.log(`Found ${topics.length} topics`);
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
+   * const { version } = await api.getVersion();
+   * console.log('Server version:', version);
    * ```
    */
-  async listTopics(page = 1, limit = 100): Promise<ListTopicsResponse> {
-    const params = new URLSearchParams({
-      page: page.toString(),
-      limit: limit.toString(),
-    });
-    return this.request<ListTopicsResponse>(`/?${params}`, {
+  async getVersion(): Promise<VersionResponse> {
+    return this.request<VersionResponse>('/', {
       method: 'GET',
     });
   }
 
   /**
-   * Discovers available peers for a given topic
+   * Creates a new offer
    *
-   * @param topic - Topic identifier
-   * @returns List of available sessions
+   * @param request - Offer details including peer ID, signaling data, and optional custom code
+   * @returns Unique offer code (UUID or custom code)
    *
    * @example
    * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
-   * const { sessions } = await client.listSessions('my-room');
-   * const otherPeers = sessions.filter(s => s.peerId !== myPeerId);
-   * ```
-   */
-  async listSessions(topic: string): Promise<ListSessionsResponse> {
-    return this.request<ListSessionsResponse>(`/${encodeURIComponent(topic)}/sessions`, {
-      method: 'GET',
-    });
-  }
-
-  /**
-   * Announces peer availability and creates a new session
-   *
-   * @param topic - Topic identifier for grouping peers (max 1024 characters)
-   * @param request - Offer details including peer ID and signaling data
-   * @returns Unique session code (UUID)
-   *
-   * @example
-   * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
-   * const { code } = await client.createOffer('my-room', {
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
+   * const { code } = await api.createOffer({
    *   peerId: 'peer-123',
-   *   offer: signalingData
+   *   offer: signalingData,
+   *   code: 'my-custom-code' // optional
    * });
-   * console.log('Session code:', code);
+   * console.log('Offer code:', code);
    * ```
    */
-  async createOffer(
-    topic: string,
-    request: CreateOfferRequest
-  ): Promise<CreateOfferResponse> {
-    return this.request<CreateOfferResponse>(
-      `/${encodeURIComponent(topic)}/offer`,
-      {
-        method: 'POST',
-        body: JSON.stringify(request),
-      }
-    );
+  async createOffer(request: CreateOfferRequest): Promise<CreateOfferResponse> {
+    return this.request<CreateOfferResponse>('/offer', {
+      method: 'POST',
+      body: JSON.stringify(request),
+    });
   }
 
   /**
-   * Sends an answer or candidate to an existing session
+   * Sends an answer or candidate to an existing offer
    *
-   * @param request - Answer details including session code and signaling data
+   * @param request - Answer details including offer code and signaling data
    * @returns Success confirmation
    *
    * @example
    * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
    *
    * // Send answer
-   * await client.sendAnswer({
-   *   code: sessionCode,
+   * await api.sendAnswer({
+   *   code: offerCode,
    *   answer: answerData,
    *   side: 'answerer'
    * });
    *
    * // Send candidate
-   * await client.sendAnswer({
-   *   code: sessionCode,
+   * await api.sendAnswer({
+   *   code: offerCode,
    *   candidate: candidateData,
    *   side: 'offerer'
    * });
@@ -171,24 +136,24 @@ export class RondevuClient {
   }
 
   /**
-   * Polls for session data from the other peer
+   * Polls for offer data from the other peer
    *
-   * @param code - Session UUID
+   * @param code - Offer code
    * @param side - Which side is polling ('offerer' or 'answerer')
-   * @returns Session data including offers, answers, and candidates
+   * @returns Offer data including offers, answers, and candidates
    *
    * @example
    * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
    *
    * // Offerer polls for answer
-   * const offererData = await client.poll(sessionCode, 'offerer');
+   * const offererData = await api.poll(offerCode, 'offerer');
    * if (offererData.answer) {
    *   console.log('Received answer:', offererData.answer);
    * }
    *
    * // Answerer polls for offer
-   * const answererData = await client.poll(sessionCode, 'answerer');
+   * const answererData = await api.poll(offerCode, 'answerer');
    * console.log('Received offer:', answererData.offer);
    * ```
    */
@@ -204,15 +169,16 @@ export class RondevuClient {
   }
 
   /**
-   * Checks server health
+   * Checks server health and version
    *
-   * @returns Health status and timestamp
+   * @returns Health status, timestamp, and version
    *
    * @example
    * ```typescript
-   * const client = new RondevuClient({ baseUrl: 'https://example.com' });
-   * const health = await client.health();
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
+   * const health = await api.health();
    * console.log('Server status:', health.status);
+   * console.log('Server version:', health.version);
    * ```
    */
   async health(): Promise<HealthResponse> {
@@ -220,4 +186,23 @@ export class RondevuClient {
       method: 'GET',
     });
   }
+
+  /**
+   * Ends a session by deleting the offer from the server
+   *
+   * @param code - The offer code
+   * @returns Success confirmation
+   *
+   * @example
+   * ```typescript
+   * const api = new RondevuAPI({ baseUrl: 'https://example.com' });
+   * await api.leave('my-offer-code');
+   * ```
+   */
+  async leave(code: string): Promise<{ success: boolean }> {
+    return this.request<{ success: boolean }>('/leave', {
+      method: 'POST',
+      body: JSON.stringify({ code }),
+    });
+  }
 }

src/connection.ts

@@ -1,310 +1,388 @@
-import { EventEmitter } from './event-emitter';
-import { RondevuClient } from './client';
-import { RondevuConnectionParams } from './types';
+import { RondevuOffers, RTCIceCandidateInit } from './offers.js';
 
 /**
- * Represents a WebRTC connection with automatic signaling and ICE exchange
+ * Events emitted by RondevuConnection
  */
-export class RondevuConnection extends EventEmitter {
-  readonly id: string;
-  readonly topic: string;
-  readonly role: 'offerer' | 'answerer';
-  readonly remotePeerId: string;
+export interface RondevuConnectionEvents {
+  'connecting': () => void;
+  'connected': () => void;
+  'disconnected': () => void;
+  'error': (error: Error) => void;
+  'datachannel': (channel: RTCDataChannel) => void;
+  'track': (event: RTCTrackEvent) => void;
+}
 
+/**
+ * Options for creating a WebRTC connection
+ */
+export interface ConnectionOptions {
+  /**
+   * RTCConfiguration for the peer connection
+   * @default { iceServers: [{ urls: 'stun:stun.l.google.com:19302' }] }
+   */
+  rtcConfig?: RTCConfiguration;
+
+  /**
+   * Topics to advertise this connection under
+   */
+  topics: string[];
+
+  /**
+   * How long the offer should live (milliseconds)
+   * @default 300000 (5 minutes)
+   */
+  ttl?: number;
+
+  /**
+   * Whether to create a data channel automatically (for offerer)
+   * @default true
+   */
+  createDataChannel?: boolean;
+
+  /**
+   * Label for the automatically created data channel
+   * @default 'data'
+   */
+  dataChannelLabel?: string;
+}
+
+/**
+ * High-level WebRTC connection manager for Rondevu
+ * Handles offer/answer exchange, ICE candidates, and connection lifecycle
+ */
+export class RondevuConnection {
   private pc: RTCPeerConnection;
-  private client: RondevuClient;
-  private localPeerId: string;
-  private dataChannels: Map<string, RTCDataChannel>;
-  private pollingInterval?: ReturnType<typeof setInterval>;
-  private pollingIntervalMs: number;
-  private connectionTimeoutMs: number;
-  private connectionTimer?: ReturnType<typeof setTimeout>;
-  private isPolling: boolean = false;
-  private isClosed: boolean = false;
+  private offersApi: RondevuOffers;
+  private offerId?: string;
+  private role?: 'offerer' | 'answerer';
+  private icePollingInterval?: ReturnType<typeof setInterval>;
+  private answerPollingInterval?: ReturnType<typeof setInterval>;
+  private lastIceTimestamp: number = 0;  // Start at 0 to get all candidates on first poll
+  private eventListeners: Map<keyof RondevuConnectionEvents, Set<Function>> = new Map();
+  private dataChannel?: RTCDataChannel;
+  private pendingIceCandidates: RTCIceCandidateInit[] = [];
 
-  constructor(params: RondevuConnectionParams, client: RondevuClient) {
-    super();
-    this.id = params.id;
-    this.topic = params.topic;
-    this.role = params.role;
-    this.pc = params.pc;
-    this.localPeerId = params.localPeerId;
-    this.remotePeerId = params.remotePeerId;
-    this.client = client;
-    this.dataChannels = new Map();
-    this.pollingIntervalMs = params.pollingInterval;
-    this.connectionTimeoutMs = params.connectionTimeout;
-
-    this.setupEventHandlers();
-    this.startConnectionTimeout();
+  /**
+   * Current connection state
+   */
+  get connectionState(): RTCPeerConnectionState {
+    return this.pc.connectionState;
   }
 
   /**
-   * Setup RTCPeerConnection event handlers
+   * The offer ID for this connection
    */
-  private setupEventHandlers(): void {
-    // ICE candidate gathering
-    this.pc.onicecandidate = (event) => {
-      if (event.candidate && !this.isClosed) {
-        this.sendIceCandidate(event.candidate).catch((err) => {
-          this.emit('error', new Error(`Failed to send ICE candidate: ${err.message}`));
-        });
-      }
-    };
+  get id(): string | undefined {
+    return this.offerId;
+  }
 
-    // Connection state changes
-    this.pc.onconnectionstatechange = () => {
-      this.handleConnectionStateChange();
-    };
+  /**
+   * Get the primary data channel (if created)
+   */
+  get channel(): RTCDataChannel | undefined {
+    return this.dataChannel;
+  }
 
-    // Remote data channels
-    this.pc.ondatachannel = (event) => {
-      this.handleRemoteDataChannel(event.channel);
-    };
+  constructor(
+    offersApi: RondevuOffers,
+    private rtcConfig: RTCConfiguration = {
+      iceServers: [
+        { urls: 'stun:stun.l.google.com:19302' },
+        { urls: 'stun:stun1.l.google.com:19302' }
+      ]
+    }
+  ) {
+    this.offersApi = offersApi;
+    this.pc = new RTCPeerConnection(rtcConfig);
+    this.setupPeerConnection();
+  }
 
-    // Remote media streams
-    this.pc.ontrack = (event) => {
-      if (event.streams && event.streams[0]) {
-        this.emit('stream', event.streams[0]);
-      }
-    };
+  /**
+   * Set up peer connection event handlers
+   */
+  private setupPeerConnection(): void {
+    this.pc.onicecandidate = async (event) => {
+      if (event.candidate) {
+        // Convert RTCIceCandidate to RTCIceCandidateInit (plain object)
+        const candidateData: RTCIceCandidateInit = {
+          candidate: event.candidate.candidate,
+          sdpMid: event.candidate.sdpMid,
+          sdpMLineIndex: event.candidate.sdpMLineIndex,
+          usernameFragment: event.candidate.usernameFragment,
+        };
 
-    // ICE connection state changes
-    this.pc.oniceconnectionstatechange = () => {
-      const state = this.pc.iceConnectionState;
-
-      if (state === 'failed' || state === 'closed') {
-        this.emit('error', new Error(`ICE connection ${state}`));
-        if (state === 'failed') {
-          this.close();
+        if (this.offerId) {
+          // offerId is set, send immediately (trickle ICE)
+          try {
+            await this.offersApi.addIceCandidates(this.offerId, [candidateData]);
+          } catch (err) {
+            console.error('Error sending ICE candidate:', err);
+          }
+        } else {
+          // offerId not set yet, buffer the candidate
+          this.pendingIceCandidates.push(candidateData);
         }
       }
     };
+
+    this.pc.onconnectionstatechange = () => {
+      switch (this.pc.connectionState) {
+        case 'connecting':
+          this.emit('connecting');
+          break;
+        case 'connected':
+          this.emit('connected');
+          // Stop polling once connected - we have all the ICE candidates we need
+          this.stopPolling();
+          break;
+        case 'disconnected':
+        case 'failed':
+        case 'closed':
+          this.emit('disconnected');
+          this.stopPolling();
+          break;
+      }
+    };
+
+    this.pc.ondatachannel = (event) => {
+      this.dataChannel = event.channel;
+      this.emit('datachannel', event.channel);
+    };
+
+    this.pc.ontrack = (event) => {
+      this.emit('track', event);
+    };
+
+    this.pc.onicecandidateerror = (event) => {
+      console.error('ICE candidate error:', event);
+    };
   }
 
   /**
-   * Handle RTCPeerConnection state changes
+   * Flush buffered ICE candidates (trickle ICE support)
    */
-  private handleConnectionStateChange(): void {
-    const state = this.pc.connectionState;
-
-    switch (state) {
-      case 'connected':
-        this.clearConnectionTimeout();
-        this.stopPolling();
-        this.emit('connect');
-        break;
-
-      case 'disconnected':
-        this.emit('disconnect');
-        break;
-
-      case 'failed':
-        this.emit('error', new Error('Connection failed'));
-        this.close();
-        break;
-
-      case 'closed':
-        this.emit('disconnect');
-        break;
+  private async flushPendingIceCandidates(): Promise<void> {
+    if (this.pendingIceCandidates.length > 0 && this.offerId) {
+      try {
+        await this.offersApi.addIceCandidates(this.offerId, this.pendingIceCandidates);
+        this.pendingIceCandidates = [];
+      } catch (err) {
+        console.error('Error flushing pending ICE candidates:', err);
+      }
     }
   }
 
   /**
-   * Send an ICE candidate to the remote peer via signaling server
+   * Create an offer and advertise on topics
    */
-  private async sendIceCandidate(candidate: RTCIceCandidate): Promise<void> {
-    try {
-      await this.client.sendAnswer({
-        code: this.id,
-        candidate: JSON.stringify(candidate.toJSON()),
-        side: this.role,
-      });
-    } catch (err: any) {
-      throw new Error(`Failed to send ICE candidate: ${err.message}`);
+  async createOffer(options: ConnectionOptions): Promise<string> {
+    this.role = 'offerer';
+
+    // Create data channel if requested
+    if (options.createDataChannel !== false) {
+      this.dataChannel = this.pc.createDataChannel(
+        options.dataChannelLabel || 'data'
+      );
+      this.emit('datachannel', this.dataChannel);
     }
+
+    // Create WebRTC offer
+    const offer = await this.pc.createOffer();
+    await this.pc.setLocalDescription(offer);
+
+    // Create offer on Rondevu server
+    const offers = await this.offersApi.create([{
+      sdp: offer.sdp!,
+      topics: options.topics,
+      ttl: options.ttl || 300000
+    }]);
+
+    this.offerId = offers[0].id;
+
+    // Flush any ICE candidates that were generated during offer creation
+    await this.flushPendingIceCandidates();
+
+    // Start polling for answers
+    this.startAnswerPolling();
+
+    return this.offerId;
   }
 
   /**
-   * Start polling for remote session data (answer/candidates)
+   * Answer an existing offer
    */
-  startPolling(): void {
-    if (this.isPolling || this.isClosed) {
-      return;
-    }
+  async answer(offerId: string, offerSdp: string): Promise<void> {
+    this.role = 'answerer';
 
-    this.isPolling = true;
-
-    // Poll immediately
-    this.poll().catch((err) => {
-      this.emit('error', new Error(`Poll error: ${err.message}`));
+    // Set remote description
+    await this.pc.setRemoteDescription({
+      type: 'offer',
+      sdp: offerSdp
     });
 
-    // Set up interval polling
-    this.pollingInterval = setInterval(() => {
-      this.poll().catch((err) => {
-        this.emit('error', new Error(`Poll error: ${err.message}`));
-      });
-    }, this.pollingIntervalMs);
+    // Create answer
+    const answer = await this.pc.createAnswer();
+    await this.pc.setLocalDescription(answer);
+
+    // Send answer to server FIRST
+    // This registers us as the answerer before ICE candidates arrive
+    await this.offersApi.answer(offerId, answer.sdp!);
+
+    // Now set offerId to enable ICE candidate sending
+    // This prevents a race condition where ICE candidates arrive before answer is registered
+    this.offerId = offerId;
+
+    // Flush any ICE candidates that were generated during answer creation
+    await this.flushPendingIceCandidates();
+
+    // Start polling for ICE candidates
+    this.startIcePolling();
   }
 
   /**
-   * Stop polling
+   * Start polling for answers (offerer only)
    */
-  private stopPolling(): void {
-    this.isPolling = false;
-    if (this.pollingInterval) {
-      clearInterval(this.pollingInterval);
-      this.pollingInterval = undefined;
-    }
-  }
+  private startAnswerPolling(): void {
+    if (this.role !== 'offerer' || !this.offerId) return;
 
-  /**
-   * Poll the signaling server for remote data
-   */
-  private async poll(): Promise<void> {
-    if (this.isClosed) {
-      this.stopPolling();
-      return;
-    }
+    this.answerPollingInterval = setInterval(async () => {
+      try {
+        const answers = await this.offersApi.getAnswers();
+        const myAnswer = answers.find(a => a.offerId === this.offerId);
 
-    try {
-      const response = await this.client.poll(this.id, this.role);
-
-      if (this.role === 'offerer') {
-        const offererResponse = response as { answer: string | null; answerCandidates: string[] };
-
-        // Apply answer if received and not yet applied
-        if (offererResponse.answer && !this.pc.currentRemoteDescription) {
+        if (myAnswer) {
+          // Set remote description
           await this.pc.setRemoteDescription({
             type: 'answer',
-            sdp: offererResponse.answer,
+            sdp: myAnswer.sdp
           });
-        }
 
-        // Apply ICE candidates
-        if (offererResponse.answerCandidates && offererResponse.answerCandidates.length > 0) {
-          for (const candidateStr of offererResponse.answerCandidates) {
-            try {
-              const candidate = JSON.parse(candidateStr);
-              await this.pc.addIceCandidate(new RTCIceCandidate(candidate));
-            } catch (err) {
-              console.warn('Failed to add ICE candidate:', err);
-            }
-          }
+          // Stop answer polling, start ICE polling
+          this.stopAnswerPolling();
+          this.startIcePolling();
         }
-      } else {
-        // Answerer role
-        const answererResponse = response as { offer: string; offerCandidates: string[] };
-
-        // Apply ICE candidates from offerer
-        if (answererResponse.offerCandidates && answererResponse.offerCandidates.length > 0) {
-          for (const candidateStr of answererResponse.offerCandidates) {
-            try {
-              const candidate = JSON.parse(candidateStr);
-              await this.pc.addIceCandidate(new RTCIceCandidate(candidate));
-            } catch (err) {
-              console.warn('Failed to add ICE candidate:', err);
-            }
-          }
+      } catch (err) {
+        console.error('Error polling for answers:', err);
+        // Stop polling if offer expired/not found
+        if (err instanceof Error && err.message.includes('not found')) {
+          this.stopPolling();
         }
       }
-    } catch (err: any) {
-      // Session not found or expired
-      if (err.message.includes('404') || err.message.includes('not found')) {
-        this.emit('error', new Error('Session not found or expired'));
-        this.close();
+    }, 2000);
+  }
+
+  /**
+   * Start polling for ICE candidates
+   */
+  private startIcePolling(): void {
+    if (!this.offerId) return;
+
+    this.icePollingInterval = setInterval(async () => {
+      if (!this.offerId) return;
+
+      try {
+        const candidates = await this.offersApi.getIceCandidates(
+          this.offerId,
+          this.lastIceTimestamp
+        );
+
+        for (const cand of candidates) {
+          // Use the candidate object directly - it's already RTCIceCandidateInit
+          await this.pc.addIceCandidate(new RTCIceCandidate(cand.candidate));
+          this.lastIceTimestamp = cand.createdAt;
+        }
+      } catch (err) {
+        console.error('Error polling for ICE candidates:', err);
+        // Stop polling if offer expired/not found
+        if (err instanceof Error && err.message.includes('not found')) {
+          this.stopPolling();
+        }
       }
-      throw err;
+    }, 1000);
+  }
+
+  /**
+   * Stop answer polling
+   */
+  private stopAnswerPolling(): void {
+    if (this.answerPollingInterval) {
+      clearInterval(this.answerPollingInterval);
+      this.answerPollingInterval = undefined;
     }
   }
 
   /**
-   * Handle remotely created data channel
+   * Stop ICE polling
    */
-  private handleRemoteDataChannel(channel: RTCDataChannel): void {
-    this.dataChannels.set(channel.label, channel);
-    this.emit('datachannel', channel);
-  }
-
-  /**
-   * Get or create a data channel
-   */
-  dataChannel(label: string, options?: RTCDataChannelInit): RTCDataChannel {
-    let channel = this.dataChannels.get(label);
-
-    if (!channel) {
-      channel = this.pc.createDataChannel(label, options);
-      this.dataChannels.set(label, channel);
-    }
-
-    return channel;
-  }
-
-  /**
-   * Add a local media stream to the connection
-   */
-  addStream(stream: MediaStream): void {
-    stream.getTracks().forEach(track => {
-      this.pc.addTrack(track, stream);
-    });
-  }
-
-  /**
-   * Get the underlying RTCPeerConnection for advanced usage
-   */
-  getPeerConnection(): RTCPeerConnection {
-    return this.pc;
-  }
-
-  /**
-   * Start connection timeout
-   */
-  private startConnectionTimeout(): void {
-    this.connectionTimer = setTimeout(() => {
-      if (this.pc.connectionState !== 'connected') {
-        this.emit('error', new Error('Connection timeout'));
-        this.close();
-      }
-    }, this.connectionTimeoutMs);
-  }
-
-  /**
-   * Clear connection timeout
-   */
-  private clearConnectionTimeout(): void {
-    if (this.connectionTimer) {
-      clearTimeout(this.connectionTimer);
-      this.connectionTimer = undefined;
+  private stopIcePolling(): void {
+    if (this.icePollingInterval) {
+      clearInterval(this.icePollingInterval);
+      this.icePollingInterval = undefined;
     }
   }
 
   /**
-   * Close the connection and cleanup resources
+   * Stop all polling
+   */
+  private stopPolling(): void {
+    this.stopAnswerPolling();
+    this.stopIcePolling();
+  }
+
+  /**
+   * Add event listener
+   */
+  on<K extends keyof RondevuConnectionEvents>(
+    event: K,
+    listener: RondevuConnectionEvents[K]
+  ): void {
+    if (!this.eventListeners.has(event)) {
+      this.eventListeners.set(event, new Set());
+    }
+    this.eventListeners.get(event)!.add(listener);
+  }
+
+  /**
+   * Remove event listener
+   */
+  off<K extends keyof RondevuConnectionEvents>(
+    event: K,
+    listener: RondevuConnectionEvents[K]
+  ): void {
+    const listeners = this.eventListeners.get(event);
+    if (listeners) {
+      listeners.delete(listener);
+    }
+  }
+
+  /**
+   * Emit event
+   */
+  private emit<K extends keyof RondevuConnectionEvents>(
+    event: K,
+    ...args: Parameters<RondevuConnectionEvents[K]>
+  ): void {
+    const listeners = this.eventListeners.get(event);
+    if (listeners) {
+      listeners.forEach(listener => {
+        (listener as any)(...args);
+      });
+    }
+  }
+
+  /**
+   * Add a media track to the connection
+   */
+  addTrack(track: MediaStreamTrack, ...streams: MediaStream[]): RTCRtpSender {
+    return this.pc.addTrack(track, ...streams);
+  }
+
+  /**
+   * Close the connection and clean up
    */
   close(): void {
-    if (this.isClosed) {
-      return;
-    }
-
-    this.isClosed = true;
-
     this.stopPolling();
-    this.clearConnectionTimeout();
-
-    // Close all data channels
-    this.dataChannels.forEach(dc => {
-      if (dc.readyState === 'open' || dc.readyState === 'connecting') {
-        dc.close();
-      }
-    });
-    this.dataChannels.clear();
-
-    // Close peer connection
-    if (this.pc.connectionState !== 'closed') {
-      this.pc.close();
-    }
-
-    this.emit('disconnect');
+    this.pc.close();
+    this.eventListeners.clear();
   }
 }

src/index.ts

@@ -1,41 +1,31 @@
 /**
  * @xtr-dev/rondevu-client
- * WebRTC peer signaling and discovery client
+ * WebRTC peer signaling and discovery client with topic-based discovery
  */
 
-// Export main WebRTC client class
-export { Rondevu } from './rondevu';
+// Export main client class
+export { Rondevu } from './rondevu.js';
+export type { RondevuOptions } from './rondevu.js';
 
-// Export connection class
-export { RondevuConnection } from './connection';
+// Export authentication
+export { RondevuAuth } from './auth.js';
+export type { Credentials, FetchFunction } from './auth.js';
 
-// Export low-level signaling client (for advanced usage)
-export { RondevuClient } from './client';
-
-// Export all types
+// Export offers API
+export { RondevuOffers } from './offers.js';
 export type {
-  // WebRTC types
-  RondevuOptions,
-  JoinOptions,
-  ConnectionRole,
-  RondevuConnectionParams,
-  RondevuConnectionEvents,
-  // Signaling types
-  Side,
-  Session,
-  TopicInfo,
-  Pagination,
-  ListTopicsResponse,
-  ListSessionsResponse,
   CreateOfferRequest,
-  CreateOfferResponse,
-  AnswerRequest,
-  AnswerResponse,
-  PollRequest,
-  PollOffererResponse,
-  PollAnswererResponse,
-  PollResponse,
-  HealthResponse,
-  ErrorResponse,
-  RondevuClientOptions,
-} from './types';
+  Offer,
+  IceCandidate,
+  TopicInfo
+} from './offers.js';
+
+// Export bloom filter
+export { BloomFilter } from './bloom.js';
+
+// Export connection manager
+export { RondevuConnection } from './connection.js';
+export type {
+  ConnectionOptions,
+  RondevuConnectionEvents
+} from './connection.js';

src/offers.ts

@@ -0,0 +1,338 @@
+import { Credentials, FetchFunction } from './auth.js';
+import { RondevuAuth } from './auth.js';
+
+// Declare Buffer for Node.js compatibility
+declare const Buffer: any;
+
+export interface CreateOfferRequest {
+  id?: string;
+  sdp: string;
+  topics: string[];
+  ttl?: number;
+}
+
+export interface Offer {
+  id: string;
+  peerId: string;
+  sdp: string;
+  topics: string[];
+  createdAt?: number;
+  expiresAt: number;
+  lastSeen: number;
+  answererPeerId?: string;
+  answerSdp?: string;
+  answeredAt?: number;
+}
+
+/**
+ * RTCIceCandidateInit interface for environments without native WebRTC types
+ */
+export interface RTCIceCandidateInit {
+  candidate?: string;
+  sdpMid?: string | null;
+  sdpMLineIndex?: number | null;
+  usernameFragment?: string | null;
+}
+
+export interface IceCandidate {
+  candidate: RTCIceCandidateInit; // Full candidate object
+  peerId: string;
+  role: 'offerer' | 'answerer';
+  createdAt: number;
+}
+
+export interface TopicInfo {
+  topic: string;
+  activePeers: number;
+}
+
+export class RondevuOffers {
+  private fetchFn: FetchFunction;
+
+  constructor(
+    private baseUrl: string,
+    private credentials: Credentials,
+    fetchFn?: FetchFunction
+  ) {
+    // Use provided fetch or fall back to global fetch
+    this.fetchFn = fetchFn || ((...args) => {
+      if (typeof globalThis.fetch === 'function') {
+        return globalThis.fetch(...args);
+      }
+      throw new Error(
+        'fetch is not available. Please provide a fetch implementation in the constructor options.'
+      );
+    });
+  }
+
+  /**
+   * Create one or more offers
+   */
+  async create(offers: CreateOfferRequest[]): Promise<Offer[]> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+      body: JSON.stringify({ offers }),
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to create offers: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.offers;
+  }
+
+  /**
+   * Find offers by topic with optional bloom filter
+   */
+  async findByTopic(
+    topic: string,
+    options?: {
+      bloomFilter?: Uint8Array;
+      limit?: number;
+    }
+  ): Promise<Offer[]> {
+    const params = new URLSearchParams();
+
+    if (options?.bloomFilter) {
+      // Convert to base64
+      const binaryString = String.fromCharCode(...Array.from(options.bloomFilter));
+      const base64 = typeof btoa !== 'undefined'
+        ? btoa(binaryString)
+        : (typeof Buffer !== 'undefined' ? Buffer.from(options.bloomFilter).toString('base64') : '');
+      params.set('bloom', base64);
+    }
+
+    if (options?.limit) {
+      params.set('limit', options.limit.toString());
+    }
+
+    const url = `${this.baseUrl}/offers/by-topic/${encodeURIComponent(topic)}${
+      params.toString() ? '?' + params.toString() : ''
+    }`;
+
+    const response = await this.fetchFn(url, {
+      method: 'GET',
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to find offers: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.offers;
+  }
+
+  /**
+   * Get all offers from a specific peer
+   */
+  async getByPeerId(peerId: string): Promise<{
+    offers: Offer[];
+    topics: string[];
+  }> {
+    const response = await this.fetchFn(`${this.baseUrl}/peers/${encodeURIComponent(peerId)}/offers`, {
+      method: 'GET',
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to get peer offers: ${error.error || response.statusText}`);
+    }
+
+    return await response.json();
+  }
+
+  /**
+   * Get topics with active peer counts (paginated)
+   */
+  async getTopics(options?: {
+    limit?: number;
+    offset?: number;
+  }): Promise<{
+    topics: TopicInfo[];
+    total: number;
+    limit: number;
+    offset: number;
+  }> {
+    const params = new URLSearchParams();
+
+    if (options?.limit) {
+      params.set('limit', options.limit.toString());
+    }
+
+    if (options?.offset) {
+      params.set('offset', options.offset.toString());
+    }
+
+    const url = `${this.baseUrl}/topics${
+      params.toString() ? '?' + params.toString() : ''
+    }`;
+
+    const response = await this.fetchFn(url, {
+      method: 'GET',
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to get topics: ${error.error || response.statusText}`);
+    }
+
+    return await response.json();
+  }
+
+  /**
+   * Get own offers
+   */
+  async getMine(): Promise<Offer[]> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/mine`, {
+      method: 'GET',
+      headers: {
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to get own offers: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.offers;
+  }
+
+  /**
+   * Update offer heartbeat
+   */
+  async heartbeat(offerId: string): Promise<void> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/${encodeURIComponent(offerId)}/heartbeat`, {
+      method: 'PUT',
+      headers: {
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to update heartbeat: ${error.error || response.statusText}`);
+    }
+  }
+
+  /**
+   * Delete an offer
+   */
+  async delete(offerId: string): Promise<void> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/${encodeURIComponent(offerId)}`, {
+      method: 'DELETE',
+      headers: {
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to delete offer: ${error.error || response.statusText}`);
+    }
+  }
+
+  /**
+   * Answer an offer
+   */
+  async answer(offerId: string, sdp: string): Promise<void> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/${encodeURIComponent(offerId)}/answer`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+      body: JSON.stringify({ sdp }),
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to answer offer: ${error.error || response.statusText}`);
+    }
+  }
+
+  /**
+   * Get answers to your offers
+   */
+  async getAnswers(): Promise<Array<{
+    offerId: string;
+    answererId: string;
+    sdp: string;
+    answeredAt: number;
+    topics: string[];
+  }>> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/answers`, {
+      method: 'GET',
+      headers: {
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to get answers: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.answers;
+  }
+
+  /**
+   * Post ICE candidates for an offer
+   */
+  async addIceCandidates(
+    offerId: string,
+    candidates: RTCIceCandidateInit[]
+  ): Promise<void> {
+    const response = await this.fetchFn(`${this.baseUrl}/offers/${encodeURIComponent(offerId)}/ice-candidates`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+      body: JSON.stringify({ candidates }),
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to add ICE candidates: ${error.error || response.statusText}`);
+    }
+  }
+
+  /**
+   * Get ICE candidates for an offer
+   */
+  async getIceCandidates(offerId: string, since?: number): Promise<IceCandidate[]> {
+    const params = new URLSearchParams();
+    if (since !== undefined) {
+      params.set('since', since.toString());
+    }
+
+    const url = `${this.baseUrl}/offers/${encodeURIComponent(offerId)}/ice-candidates${
+      params.toString() ? '?' + params.toString() : ''
+    }`;
+
+    const response = await this.fetchFn(url, {
+      method: 'GET',
+      headers: {
+        Authorization: RondevuAuth.createAuthHeader(this.credentials),
+      },
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(`Failed to get ICE candidates: ${error.error || response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.candidates;
+  }
+}

src/rondevu.ts

@@ -1,266 +1,103 @@
-import { RondevuClient } from './client';
-import { RondevuConnection } from './connection';
-import { RondevuOptions, JoinOptions, RondevuConnectionParams } from './types';
+import { RondevuAuth, Credentials, FetchFunction } from './auth.js';
+import { RondevuOffers } from './offers.js';
+import { RondevuConnection, ConnectionOptions } from './connection.js';
+
+export interface RondevuOptions {
+  /**
+   * Base URL of the Rondevu server
+   * @default 'https://api.ronde.vu'
+   */
+  baseUrl?: string;
+
+  /**
+   * Existing credentials (peerId + secret) to skip registration
+   */
+  credentials?: Credentials;
+
+  /**
+   * Custom fetch implementation for environments without native fetch
+   * (Node.js < 18, some Workers environments, etc.)
+   *
+   * @example Node.js
+   * ```typescript
+   * import fetch from 'node-fetch';
+   * const client = new Rondevu({ fetch });
+   * ```
+   */
+  fetch?: FetchFunction;
+}
 
-/**
- * Main Rondevu WebRTC client with automatic connection management
- */
 export class Rondevu {
-  readonly peerId: string;
+  readonly auth: RondevuAuth;
+  private _offers?: RondevuOffers;
+  private credentials?: Credentials;
+  private baseUrl: string;
+  private fetchFn?: FetchFunction;
 
-  private client: RondevuClient;
-  private rtcConfig?: RTCConfiguration;
-  private pollingInterval: number;
-  private connectionTimeout: number;
+  constructor(options: RondevuOptions = {}) {
+    this.baseUrl = options.baseUrl || 'https://api.ronde.vu';
+    this.fetchFn = options.fetch;
 
-  /**
-   * Creates a new Rondevu client instance
-   * @param options - Client configuration options
-   */
-  constructor(options: RondevuOptions) {
-    this.client = new RondevuClient({
-      baseUrl: options.baseUrl,
-      origin: options.origin,
-      fetch: options.fetch,
-    });
+    this.auth = new RondevuAuth(this.baseUrl, this.fetchFn);
 
-    // Auto-generate peer ID if not provided
-    this.peerId = options.peerId || this.generatePeerId();
-    this.rtcConfig = options.rtcConfig;
-    this.pollingInterval = options.pollingInterval || 1000;
-    this.connectionTimeout = options.connectionTimeout || 30000;
-  }
-
-  /**
-   * Generate a unique peer ID
-   */
-  private generatePeerId(): string {
-    return `rdv_${Math.random().toString(36).substring(2, 14)}`;
-  }
-
-  /**
-   * Update the peer ID (useful when user identity changes)
-   */
-  updatePeerId(newPeerId: string): void {
-    (this as any).peerId = newPeerId;
-  }
-
-  /**
-   * Create a new connection (offerer role)
-   * @param id - Connection identifier
-   * @param topic - Topic name for grouping connections
-   * @returns Promise that resolves to RondevuConnection
-   */
-  async create(id: string, topic: string): Promise<RondevuConnection> {
-    // Create peer connection
-    const pc = new RTCPeerConnection(this.rtcConfig);
-
-    // Create initial data channel for negotiation (required for offer creation)
-    pc.createDataChannel('_negotiation');
-
-    // Generate offer
-    const offer = await pc.createOffer();
-    await pc.setLocalDescription(offer);
-
-    // Wait for ICE gathering to complete
-    await this.waitForIceGathering(pc);
-
-    // Create session on server with custom code
-    await this.client.createOffer(topic, {
-      peerId: this.peerId,
-      offer: pc.localDescription!.sdp,
-      code: id,
-    });
-
-    // Create connection object
-    const connectionParams: RondevuConnectionParams = {
-      id,
-      topic,
-      role: 'offerer',
-      pc,
-      localPeerId: this.peerId,
-      remotePeerId: '', // Will be populated when answer is received
-      pollingInterval: this.pollingInterval,
-      connectionTimeout: this.connectionTimeout,
-    };
-
-    const connection = new RondevuConnection(connectionParams, this.client);
-
-    // Start polling for answer
-    connection.startPolling();
-
-    return connection;
-  }
-
-  /**
-   * Connect to an existing connection by ID (answerer role)
-   * @param id - Connection identifier
-   * @returns Promise that resolves to RondevuConnection
-   */
-  async connect(id: string): Promise<RondevuConnection> {
-    // Poll server to get session by ID
-    const sessionData = await this.findSessionById(id);
-
-    if (!sessionData) {
-      throw new Error(`Connection ${id} not found or expired`);
+    if (options.credentials) {
+      this.credentials = options.credentials;
+      this._offers = new RondevuOffers(this.baseUrl, this.credentials, this.fetchFn);
     }
-
-    // Create peer connection
-    const pc = new RTCPeerConnection(this.rtcConfig);
-
-    // Set remote offer
-    await pc.setRemoteDescription({
-      type: 'offer',
-      sdp: sessionData.offer,
-    });
-
-    // Generate answer
-    const answer = await pc.createAnswer();
-    await pc.setLocalDescription(answer);
-
-    // Wait for ICE gathering
-    await this.waitForIceGathering(pc);
-
-    // Send answer to server
-    await this.client.sendAnswer({
-      code: id,
-      answer: pc.localDescription!.sdp,
-      side: 'answerer',
-    });
-
-    // Create connection object
-    const connectionParams: RondevuConnectionParams = {
-      id,
-      topic: sessionData.topic || 'unknown',
-      role: 'answerer',
-      pc,
-      localPeerId: this.peerId,
-      remotePeerId: sessionData.peerId,
-      pollingInterval: this.pollingInterval,
-      connectionTimeout: this.connectionTimeout,
-    };
-
-    const connection = new RondevuConnection(connectionParams, this.client);
-
-    // Start polling for ICE candidates
-    connection.startPolling();
-
-    return connection;
   }
 
   /**
-   * Join a topic and discover available peers (answerer role)
-   * @param topic - Topic name
-   * @param options - Optional join options for filtering and selection
-   * @returns Promise that resolves to RondevuConnection
+   * Get offers API (requires authentication)
    */
-  async join(topic: string, options?: JoinOptions): Promise<RondevuConnection> {
-    // List sessions in topic
-    const { sessions } = await this.client.listSessions(topic);
+  get offers(): RondevuOffers {
+    if (!this._offers) {
+      throw new Error('Not authenticated. Call register() first or provide credentials.');
+    }
+    return this._offers;
+  }
 
-    // Filter out self (sessions with our peer ID)
-    let availableSessions = sessions.filter(
-      session => session.peerId !== this.peerId
+  /**
+   * Register and initialize authenticated client
+   */
+  async register(): Promise<Credentials> {
+    this.credentials = await this.auth.register();
+
+    // Create offers API instance
+    this._offers = new RondevuOffers(
+      this.baseUrl,
+      this.credentials,
+      this.fetchFn
     );
 
-    // Apply custom filter if provided
-    if (options?.filter) {
-      availableSessions = availableSessions.filter(options.filter);
-    }
-
-    if (availableSessions.length === 0) {
-      throw new Error(`No available peers in topic: ${topic}`);
-    }
-
-    // Select session based on strategy
-    const selectedSession = this.selectSession(
-      availableSessions,
-      options?.select || 'first'
-    );
-
-    // Connect to selected session
-    return this.connect(selectedSession.code);
+    return this.credentials;
   }
 
   /**
-   * Select a session based on strategy
+   * Check if client is authenticated
    */
-  private selectSession(
-    sessions: Array<{ code: string; peerId: string; createdAt: number }>,
-    strategy: 'first' | 'newest' | 'oldest' | 'random'
-  ): { code: string; peerId: string; createdAt: number } {
-    switch (strategy) {
-      case 'first':
-        return sessions[0];
-      case 'newest':
-        return sessions.reduce((newest, session) =>
-          session.createdAt > newest.createdAt ? session : newest
-        );
-      case 'oldest':
-        return sessions.reduce((oldest, session) =>
-          session.createdAt < oldest.createdAt ? session : oldest
-        );
-      case 'random':
-        return sessions[Math.floor(Math.random() * sessions.length)];
-      default:
-        return sessions[0];
-    }
+  isAuthenticated(): boolean {
+    return !!this.credentials;
   }
 
   /**
-   * Wait for ICE gathering to complete
+   * Get current credentials
    */
-  private async waitForIceGathering(pc: RTCPeerConnection): Promise<void> {
-    if (pc.iceGatheringState === 'complete') {
-      return;
-    }
-
-    return new Promise((resolve) => {
-      const checkState = () => {
-        if (pc.iceGatheringState === 'complete') {
-          pc.removeEventListener('icegatheringstatechange', checkState);
-          resolve();
-        }
-      };
-
-      pc.addEventListener('icegatheringstatechange', checkState);
-
-      // Also set a timeout in case gathering takes too long
-      setTimeout(() => {
-        pc.removeEventListener('icegatheringstatechange', checkState);
-        resolve();
-      }, 5000);
-    });
+  getCredentials(): Credentials | undefined {
+    return this.credentials;
   }
 
   /**
-   * Find a session by connection ID
-   * This requires polling since we don't know which topic it's in
+   * Create a new WebRTC connection (requires authentication)
+   * This is a high-level helper that creates and manages WebRTC connections
+   *
+   * @param rtcConfig Optional RTCConfiguration for the peer connection
+   * @returns RondevuConnection instance
    */
-  private async findSessionById(id: string): Promise<{
-    code: string;
-    peerId: string;
-    offer: string;
-    topic?: string;
-  } | null> {
-    try {
-      // Try to poll for the session directly
-      // The poll endpoint should return the session data
-      const response = await this.client.poll(id, 'answerer');
-      const answererResponse = response as { offer: string; offerCandidates: string[] };
-
-      if (answererResponse.offer) {
-        return {
-          code: id,
-          peerId: '', // Will be populated from session data
-          offer: answererResponse.offer,
-          topic: undefined,
-        };
-      }
-
-      return null;
-    } catch (err) {
-      throw new Error(`Failed to find session ${id}: ${(err as Error).message}`);
+  createConnection(rtcConfig?: RTCConfiguration): RondevuConnection {
+    if (!this._offers) {
+      throw new Error('Not authenticated. Call register() first or provide credentials.');
     }
+
+    return new RondevuConnection(this._offers, rtcConfig);
   }
 }

src/types.ts

@@ -8,64 +8,7 @@
 export type Side = 'offerer' | 'answerer';
 
 /**
- * Session information returned from discovery endpoints
- */
-export interface Session {
-  /** Unique session identifier (UUID) */
-  code: string;
-  /** Peer identifier/metadata */
-  peerId: string;
-  /** Signaling data for peer connection */
-  offer: string;
-  /** Additional signaling data from offerer */
-  offerCandidates: string[];
-  /** Unix timestamp when session was created */
-  createdAt: number;
-  /** Unix timestamp when session expires */
-  expiresAt: number;
-}
-
-/**
- * Topic information with peer count
- */
-export interface TopicInfo {
-  /** Topic identifier */
-  topic: string;
-  /** Number of available peers in this topic */
-  count: number;
-}
-
-/**
- * Pagination information
- */
-export interface Pagination {
-  /** Current page number */
-  page: number;
-  /** Results per page */
-  limit: number;
-  /** Total number of results */
-  total: number;
-  /** Whether there are more results available */
-  hasMore: boolean;
-}
-
-/**
- * Response from GET / - list all topics
- */
-export interface ListTopicsResponse {
-  topics: TopicInfo[];
-  pagination: Pagination;
-}
-
-/**
- * Response from GET /:topic/sessions - list sessions in a topic
- */
-export interface ListSessionsResponse {
-  sessions: Session[];
-}
-
-/**
- * Request body for POST /:topic/offer
+ * Request body for POST /offer
  */
 export interface CreateOfferRequest {
   /** Peer identifier/metadata (max 1024 characters) */
@@ -77,7 +20,7 @@ export interface CreateOfferRequest {
 }
 
 /**
- * Response from POST /:topic/offer
+ * Response from POST /offer
  */
 export interface CreateOfferResponse {
   /** Unique session identifier (UUID) */
@@ -140,12 +83,21 @@ export interface PollAnswererResponse {
  */
 export type PollResponse = PollOffererResponse | PollAnswererResponse;
 
+/**
+ * Response from GET / - server version information
+ */
+export interface VersionResponse {
+  /** Git commit hash or version identifier */
+  version: string;
+}
+
 /**
  * Response from GET /health
  */
 export interface HealthResponse {
   status: 'ok';
   timestamp: number;
+  version: string;
 }
 
 /**
@@ -161,8 +113,6 @@ export interface ErrorResponse {
 export interface RondevuClientOptions {
   /** Base URL of the Rondevu server (e.g., 'https://example.com') */
   baseUrl: string;
-  /** Origin header value for session isolation (defaults to baseUrl origin) */
-  origin?: string;
   /** Optional fetch implementation (for Node.js environments) */
   fetch?: typeof fetch;
 }
@@ -171,16 +121,23 @@ export interface RondevuClientOptions {
 // WebRTC Types
 // ============================================================================
 
+/**
+ * WebRTC polyfill for Node.js and other non-browser platforms
+ */
+export interface WebRTCPolyfill {
+  RTCPeerConnection: typeof RTCPeerConnection;
+  RTCSessionDescription: typeof RTCSessionDescription;
+  RTCIceCandidate: typeof RTCIceCandidate;
+}
+
 /**
  * Configuration options for Rondevu WebRTC client
  */
 export interface RondevuOptions {
-  /** Base URL of the Rondevu server (e.g., 'https://example.com') */
-  baseUrl: string;
+  /** Base URL of the Rondevu server (defaults to 'https://api.ronde.vu') */
+  baseUrl?: string;
   /** Peer identifier (optional, auto-generated if not provided) */
   peerId?: string;
-  /** Origin header value for session isolation (defaults to baseUrl origin) */
-  origin?: string;
   /** Optional fetch implementation (for Node.js environments) */
   fetch?: typeof fetch;
   /** WebRTC configuration (ICE servers, etc.) */
@@ -189,16 +146,8 @@ export interface RondevuOptions {
   pollingInterval?: number;
   /** Connection timeout in milliseconds (default: 30000) */
   connectionTimeout?: number;
-}
-
-/**
- * Options for joining a topic
- */
-export interface JoinOptions {
-  /** Filter function to select specific sessions */
-  filter?: (session: { code: string; peerId: string }) => boolean;
-  /** Selection strategy for choosing a session */
-  select?: 'first' | 'newest' | 'oldest' | 'random';
+  /** WebRTC polyfill for Node.js (e.g., wrtc or @roamhq/wrtc) */
+  wrtc?: WebRTCPolyfill;
 }
 
 /**
@@ -211,13 +160,14 @@ export type ConnectionRole = 'offerer' | 'answerer';
  */
 export interface RondevuConnectionParams {
   id: string;
-  topic: string;
+  topic?: string;
   role: ConnectionRole;
   pc: RTCPeerConnection;
   localPeerId: string;
   remotePeerId: string;
   pollingInterval: number;
   connectionTimeout: number;
+  wrtc?: WebRTCPolyfill;
 }
 
 /**