Today both proxies are effectively open to anyone who can set an
Origin header for trails.cool — a third party can use us as a free
BRouter/Overpass relay. Require a live planner session on every call
so abuse traffic costs the scraper a session row (observable,
revocable) before they can issue a single query.
Server:
- New `requireSession(id)` helper — returns the session row or a 401
Response. Reused by both route handlers.
- `/api/route`: `sessionId` in body is now required and verified;
rate-limit key always falls back to the session id.
- `/api/overpass`: new `X-Trails-Session` header, verified. Header
keeps the session out of the request body so the body-keyed cache
is unaffected.
Client plumbing:
- `useRouting(yjs, sessionId)` — sessionId goes into the /api/route
body.
- `usePois(sessionId)` → `queryPois(..., sessionId)` → `X-Trails-Session`
on the proxy call.
- `PlannerMap` + `YjsDebugPanel` gain a `sessionId` prop from
`SessionView`.
Journal server-to-server:
- Demo-bot and `/api/v1/routes/compute` now POST `/api/sessions` to
mint a throwaway planner session, then cite it on the forwarded
`/api/route` call. Planner's `expire-sessions` cron cleans these up
(7d window) so nothing needs explicit teardown.
Tests:
- 5 unit tests for `requireSession` covering missing / empty /
non-string / unknown-session / valid-session cases.
- Two integration E2E tests document the 401 for missing session on
each proxy.
- Pre-existing `/api/route` integration tests updated to mint a
session first.
Caveat: existing browser tabs lose their /api/route ability until
reload (the old JS doesn't know to send sessionId). Acceptable for
an anonymous planner.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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