A Pipecat example demonstrating how to use WebsocketTransport
This commit is contained in:
Filipi Fuchter
234
examples/websocket/client/src/app.ts
Normal file
234
examples/websocket/client/src/app.ts
Normal file
@@ -0,0 +1,234 @@
|
||||
/**
|
||||
* Copyright (c) 2024–2025, Daily
|
||||
*
|
||||
* SPDX-License-Identifier: BSD 2-Clause License
|
||||
*/
|
||||
|
||||
/**
|
||||
* RTVI Client Implementation
|
||||
*
|
||||
* This client connects to an RTVI-compatible bot server using WebSocket.
|
||||
*
|
||||
* Requirements:
|
||||
* - A running RTVI bot server (defaults to http://localhost:7860)
|
||||
*/
|
||||
|
||||
import {
|
||||
RTVIClient,
|
||||
RTVIClientOptions,
|
||||
RTVIEvent,
|
||||
} from '@pipecat-ai/client-js';
|
||||
import {
|
||||
WebSocketTransport
|
||||
} from "@pipecat-ai/websocket-transport";
|
||||
|
||||
class WebsocketClientApp {
|
||||
private rtviClient: RTVIClient | null = null;
|
||||
private connectBtn: HTMLButtonElement | null = null;
|
||||
private disconnectBtn: HTMLButtonElement | null = null;
|
||||
private statusSpan: HTMLElement | null = null;
|
||||
private debugLog: HTMLElement | null = null;
|
||||
private botAudio: HTMLAudioElement;
|
||||
|
||||
constructor() {
|
||||
console.log("WebsocketClientApp");
|
||||
this.botAudio = document.createElement('audio');
|
||||
this.botAudio.autoplay = true;
|
||||
//this.botAudio.playsInline = true;
|
||||
document.body.appendChild(this.botAudio);
|
||||
|
||||
this.setupDOMElements();
|
||||
this.setupEventListeners();
|
||||
}
|
||||
|
||||
/**
|
||||
* Set up references to DOM elements and create necessary media elements
|
||||
*/
|
||||
private setupDOMElements(): void {
|
||||
this.connectBtn = document.getElementById('connect-btn') as HTMLButtonElement;
|
||||
this.disconnectBtn = document.getElementById('disconnect-btn') as HTMLButtonElement;
|
||||
this.statusSpan = document.getElementById('connection-status');
|
||||
this.debugLog = document.getElementById('debug-log');
|
||||
}
|
||||
|
||||
/**
|
||||
* Set up event listeners for connect/disconnect buttons
|
||||
*/
|
||||
private setupEventListeners(): void {
|
||||
this.connectBtn?.addEventListener('click', () => this.connect());
|
||||
this.disconnectBtn?.addEventListener('click', () => this.disconnect());
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a timestamped message to the debug log
|
||||
*/
|
||||
private log(message: string): void {
|
||||
if (!this.debugLog) return;
|
||||
const entry = document.createElement('div');
|
||||
entry.textContent = `${new Date().toISOString()} - ${message}`;
|
||||
if (message.startsWith('User: ')) {
|
||||
entry.style.color = '#2196F3';
|
||||
} else if (message.startsWith('Bot: ')) {
|
||||
entry.style.color = '#4CAF50';
|
||||
}
|
||||
this.debugLog.appendChild(entry);
|
||||
this.debugLog.scrollTop = this.debugLog.scrollHeight;
|
||||
console.log(message);
|
||||
}
|
||||
|
||||
/**
|
||||
* Update the connection status display
|
||||
*/
|
||||
private updateStatus(status: string): void {
|
||||
if (this.statusSpan) {
|
||||
this.statusSpan.textContent = status;
|
||||
}
|
||||
this.log(`Status: ${status}`);
|
||||
}
|
||||
|
||||
/**
|
||||
* Check for available media tracks and set them up if present
|
||||
* This is called when the bot is ready or when the transport state changes to ready
|
||||
*/
|
||||
setupMediaTracks() {
|
||||
if (!this.rtviClient) return;
|
||||
const tracks = this.rtviClient.tracks();
|
||||
if (tracks.bot?.audio) {
|
||||
this.setupAudioTrack(tracks.bot.audio);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Set up listeners for track events (start/stop)
|
||||
* This handles new tracks being added during the session
|
||||
*/
|
||||
setupTrackListeners() {
|
||||
if (!this.rtviClient) return;
|
||||
|
||||
// Listen for new tracks starting
|
||||
this.rtviClient.on(RTVIEvent.TrackStarted, (track, participant) => {
|
||||
// Only handle non-local (bot) tracks
|
||||
if (!participant?.local && track.kind === 'audio') {
|
||||
this.setupAudioTrack(track);
|
||||
}
|
||||
});
|
||||
|
||||
// Listen for tracks stopping
|
||||
this.rtviClient.on(RTVIEvent.TrackStopped, (track, participant) => {
|
||||
this.log(`Track stopped: ${track.kind} from ${participant?.name || 'unknown'}`);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Set up an audio track for playback
|
||||
* Handles both initial setup and track updates
|
||||
*/
|
||||
private setupAudioTrack(track: MediaStreamTrack): void {
|
||||
this.log('Setting up audio track');
|
||||
if (this.botAudio.srcObject && "getAudioTracks" in this.botAudio.srcObject) {
|
||||
const oldTrack = this.botAudio.srcObject.getAudioTracks()[0];
|
||||
if (oldTrack?.id === track.id) return;
|
||||
}
|
||||
this.botAudio.srcObject = new MediaStream([track]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialize and connect to the bot
|
||||
* This sets up the RTVI client, initializes devices, and establishes the connection
|
||||
*/
|
||||
public async connect(): Promise<void> {
|
||||
try {
|
||||
const startTime = Date.now();
|
||||
|
||||
//const transport = new DailyTransport();
|
||||
const transport = new WebSocketTransport();
|
||||
const RTVIConfig: RTVIClientOptions = {
|
||||
transport,
|
||||
params: {
|
||||
// The baseURL and endpoint of your bot server that the client will connect to
|
||||
baseUrl: 'http://localhost:7860',
|
||||
endpoints: { connect: '/connect' },
|
||||
},
|
||||
enableMic: true,
|
||||
enableCam: false,
|
||||
callbacks: {
|
||||
onConnected: () => {
|
||||
this.updateStatus('Connected');
|
||||
if (this.connectBtn) this.connectBtn.disabled = true;
|
||||
if (this.disconnectBtn) this.disconnectBtn.disabled = false;
|
||||
},
|
||||
onDisconnected: () => {
|
||||
this.updateStatus('Disconnected');
|
||||
if (this.connectBtn) this.connectBtn.disabled = false;
|
||||
if (this.disconnectBtn) this.disconnectBtn.disabled = true;
|
||||
this.log('Client disconnected');
|
||||
},
|
||||
onBotReady: (data) => {
|
||||
this.log(`Bot ready: ${JSON.stringify(data)}`);
|
||||
this.setupMediaTracks();
|
||||
},
|
||||
onUserTranscript: (data) => {
|
||||
if (data.final) {
|
||||
this.log(`User: ${data.text}`);
|
||||
}
|
||||
},
|
||||
onBotTranscript: (data) => this.log(`Bot: ${data.text}`),
|
||||
onMessageError: (error) => console.error('Message error:', error),
|
||||
onError: (error) => console.error('Error:', error),
|
||||
},
|
||||
}
|
||||
this.rtviClient = new RTVIClient(RTVIConfig);
|
||||
this.setupTrackListeners();
|
||||
|
||||
this.log('Initializing devices...');
|
||||
await this.rtviClient.initDevices();
|
||||
|
||||
this.log('Connecting to bot...');
|
||||
await this.rtviClient.connect();
|
||||
|
||||
const timeTaken = Date.now() - startTime;
|
||||
this.log(`Connection complete, timeTaken: ${timeTaken}`);
|
||||
} catch (error) {
|
||||
this.log(`Error connecting: ${(error as Error).message}`);
|
||||
this.updateStatus('Error');
|
||||
// Clean up if there's an error
|
||||
if (this.rtviClient) {
|
||||
try {
|
||||
await this.rtviClient.disconnect();
|
||||
} catch (disconnectError) {
|
||||
this.log(`Error during disconnect: ${disconnectError}`);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Disconnect from the bot and clean up media resources
|
||||
*/
|
||||
public async disconnect(): Promise<void> {
|
||||
if (this.rtviClient) {
|
||||
try {
|
||||
await this.rtviClient.disconnect();
|
||||
this.rtviClient = null;
|
||||
if (this.botAudio.srcObject && "getAudioTracks" in this.botAudio.srcObject) {
|
||||
this.botAudio.srcObject.getAudioTracks().forEach((track) => track.stop());
|
||||
this.botAudio.srcObject = null;
|
||||
}
|
||||
} catch (error) {
|
||||
this.log(`Error disconnecting: ${(error as Error).message}`);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
declare global {
|
||||
interface Window {
|
||||
WebsocketClientApp: typeof WebsocketClientApp;
|
||||
}
|
||||
}
|
||||
|
||||
window.addEventListener('DOMContentLoaded', () => {
|
||||
window.WebsocketClientApp = WebsocketClientApp;
|
||||
new WebsocketClientApp();
|
||||
});
|
||||
Reference in New Issue
Block a user