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jubertihello-realtime
Remix of jubertioai/hello-realtime
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hello-realtime
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README.md

hello-realtime

Hello Realtime is a OpenAI Realtime app that supports both WebRTC and SIP (telephone) users. You can access the app via WebRTC at hello-realtime.val.run, or via SIP by calling 425-800-0042.

This demo shows off the new SIP API, the new all-in-one WebRTC API, and the new server-side websocket interface.

If you remix the app, you'll just need to pop in your own OPENAI_API_KEY (from platform.openai.com), and if you want SIP, the OPENAI_SIGNING_SECRET.

Architecture

  1. WebRTC Flow:
    • Browser connects to frontend
    • creates WebRTC offer
    • /rtc endpoint handles SDP negotiation with OpenAI
    • observer established to monitor session
  2. SIP Flow:
    • Phone calls triggers webhook
    • /sip endpoint verifies webhook and accepts call
    • observer established to monitor session

API Endpoints

  • GET / - serves the WebRTC-based app
  • POST /rtc - creates a new WebRTC-based Realtime API session
  • POST /sip - handles an incoming Realtime API SIP call
  • POST /observer - internal endpoint to establish a Realtime API websocket for session control

Project Structure


├── frontend/     
│   └── index.html          # HTML/JS application for WebRTC
├── main.tsx                # Main entrypoint for the val.town app
└── routes/
    |── observer.ts         # Server-side session control for SIP & WebRTC
    |── rtc.ts              # WebRTC session setup
    |── sip.ts              # SIP webhook handling and session setup
    └── utils.ts            # Realtime API session configuration and helpers
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