Launch a Debugging Terminal into GitHub Actions
4 months ago
- #Debugging
- #GitHub Actions
- #WebRTC
- WebRTC is used to create a debugging terminal for GitHub Actions, allowing interactive access when builds fail.
- The solution leverages Peer-to-Peer (P2P) connections via WebRTC to avoid high data transfer costs.
- Security is ensured using OAuth for browser authentication and OIDC tokens for Actions VM identity verification.
- A signaling server facilitates the introduction of peers (Actions VM and user's browser) without handling terminal data.
- The terminal session is streamed over WebRTC's data channel, with Ghostty library used for browser-side terminal display.
- Additional security measures include One-Time Passwords (OTP) for peer validation, independent of the signaling server.
- The signaling server is hosted on Railway.com, utilizing its pay-for-use model to minimize costs, with features like automatic sleeping when idle.