hermes-agent/docs
Ben Barclay 64a507da44
feat(relay): handle passthrough_forward over the WS (Phase 5 §5.1, gateway half) (#50702)
The connector half (gateway-gateway) moves the passthrough plane's post-ACK
forward off the HTTP gatewayEndpoint onto the gateway's outbound /relay WS via
a new passthrough_forward frame. This is the gateway side: the relay adapter
now RECEIVES and handles that frame, so a hosted gateway (no public IP) can
process forwarded Class-2/3 traffic (Discord interactions, Twilio) over the
socket it already holds — closing the "passthrough inbound doesn't work for
hosted gateways" gap.

- ws_transport.py: decode the passthrough_forward frame; PassthroughForward
  dataclass + _passthrough_from_wire (base64 body -> exact bytes, byte parity
  with the connector's toPassthroughForward); set_passthrough_handler mirrors
  set_interrupt_inbound_handler.
- transport.py: PassthroughHandler type + set_passthrough_handler on the
  RelayTransport protocol.
- adapter.py: connect() wires the passthrough handler; _on_passthrough decodes
  the (already-sanitized, token-free) forward and, for a Discord interaction,
  converts it to a MessageEvent routed through the normal agent path
  (handle_message) — the reply egresses over the outbound / token-less
  follow_up path, so the gateway never holds the interaction credential. Never
  raises (a bad forward can't kill the read loop). Non-discord forwards (Twilio)
  are logged + dropped for now.
- docs/relay-connector-contract.md: document the passthrough_forward frame +
  PassthroughForward shape + §3.1.

The interaction -> MessageEvent CONVERSION semantics (slash-command vs button
UX, option rendering) are the open sub-design flagged in the spec; the TRANSPORT
+ receive mechanism (this) is settled per Ben's Gate-2 decision: "the relay
adapter handles receiving these events over the WS."

Tests (tests/gateway/relay/test_relay_passthrough.py): byte-preservation
round-trip (+ malformed-body tolerance), connect() wiring, application-command
and message-component interactions route through handle_message with correct
session source + scope capture, malformed/non-discord forwards dropped cleanly.
100 relay tests green. Pairs with the connector PR (gateway-gateway).
2026-06-22 20:10:57 +10:00
..
design docs(profile): update clone-from references 2026-06-13 07:33:58 -07:00
kanban feat(kanban): gate notifier watcher on dispatch_in_gateway 2026-06-01 20:30:24 -07:00
middleware fix(middleware): preserve translated downstream failures 2026-06-06 09:26:18 -07:00
observability feat(observability): observer-grade telemetry hooks + NeMo-Relay plugin 2026-06-03 06:36:46 -07:00
plans fix(gateway): recover partial Telegram overflow streams 2026-06-10 15:09:35 -07:00
security docs(security): add network egress isolation guide for Docker deployments (#26385) 2026-05-29 14:09:10 +10:00
chronos-managed-cron-contract.md fix(cron): serve /api/cron/fire on the dashboard app (hosted-agent surface) 2026-06-19 12:43:30 +10:00
hermes-kanban-v1-spec.pdf feat(kanban): durable multi-profile collaboration board (#17805) 2026-04-30 13:36:47 -07:00
rca-ssl-cacert-post-git-pull.md fix(ssl): align guard docs and escape hatch 2026-06-13 21:14:32 -07:00
relay-connector-contract.md feat(relay): handle passthrough_forward over the WS (Phase 5 §5.1, gateway half) (#50702) 2026-06-22 20:10:57 +10:00
session-lifecycle.md docs: session lifecycle documentation 2026-06-20 23:23:47 -07:00