Negotiate downstream delivery credit and schedule response streams fairly before encryption. Bound queued output, preserve deltas and WebSocket close ordering, and retain legacy peer compatibility.
Validated with 81 relay tests, workspace type-check and lint, web build and mobile assets, and slow-link tests through the production relay. Confirmed on LTE by the maintainer.
Adds OpenChamber Relay — an opt-in way to reach an instance from a phone,
browser, or another desktop from anywhere, with no open inbound ports, no
tunnel, and no shared LAN. The instance dials outbound to a relay; all app
traffic (HTTP, the event stream, terminal, dictation) is multiplexed and
encrypted through a single connection per client, so the relay only ever
forwards opaque ciphertext.
Transport
- End-to-end-encrypted channel over WebCrypto (ECDH P-256 -> HKDF ->
AES-256-GCM) with a capability-negotiated handshake and a small
HTTP/SSE/WebSocket multiplexing protocol. A byte-compatible JS host mirror
is cross-checked by tests.
- Host: outbound connection manager, per-client tunnel dispatcher to the local
server over loopback, reuse of the existing instance identity key, and
management routes. Disabled by default; explicit opt-in.
- Client: plugs into the existing runtime layer (runtime-fetch/-url/-switch/
-auth, event pipeline, terminal, dictation) so features work over the relay
unchanged; direct-URL and Electron realtime-proxy paths are untouched.
Pairing & UX
- Relay section in Settings -> Remote Instances (live status, QR/link pairing,
revocation via the existing client-token list) and the mobile connect flow.
- Frame batching and idle-gated keepalive keep tunnel message volume low
without affecting streaming smoothness.
Security
- The tunnel is transport only; the server authenticates every tunneled
request exactly as for a direct remote client.
fragments only. The relay stores no keys, tokens, or payloads.
Operability
- The endpoint can be pinned to a self-hosted rel
paired clients inherit it from the offer automatically.
- Relay module DOCUMENTATION.md and a relay-trans
invariants that future WebSocket/streaming changes must follow.
The relay transport is complete and tested; the UI for enabling and pairing
is gated behind openchamber_relay_gate and stays
Bohdan Triapitsyn