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feat(tunnel): free finished tunnels at once and wait out 429s on --remote

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A tunnel closed with code 1000 is freed without the 60s grace, a shared: true API key counts tunnels per X-Client-Id, and --remote waits out Retry-After and a full tunnel cap with a countdown; responses carry X-RateLimit-* headers.
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imSp4rky
2026-11-09 15:43:33 -07:00
parent 4b6d15cc2a
commit b10fd2d3a4
13 changed files with 358 additions and 25 deletions
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docs/dev/rest-api/authentication.md
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@@ -224,6 +224,19 @@ A limit comes from `serve.tiers.<name>.rate_limit` or from the API key's own
[dashboard rate limits](dashboard.md#rate-limits) for the config and the counters, and
[services configuration](../../reference/configuration/services.md) for the keys themselves.
Every response to an API key that has a limit carries these headers, the `429` too. A
WebSocket or event stream response sends its headers before the handler returns, so it has none.
The CORS headers expose these headers and `Retry-After` to a browser client.
| Header | Value |
|---|---|
| `X-RateLimit-Limit` | Requests per hour that the API key may make. |
| `X-RateLimit-Remaining` | Requests left in the current window. |
| `X-RateLimit-Reset` | Seconds until the window resets. |
A `--remote` client that gets a `429` with `Retry-After` shows a countdown, waits that time
(one hour at most), and then sends the request again. It stops after 3 waits for one request.
!!! warning "`429` is not the `RATE_LIMITED` error body"
`RATE_LIMITED` in [Errors](errors.md) is a *service* rate limit that a handler raises, and it
arrives in the standard envelope with an `error_code`. The `429` here comes from the
@@ -311,6 +324,7 @@ With `--caddy`, unshackle also starts `caddy run` using the `Caddyfile` located
| Missing-header body | `{"status": 401, "message": "Secret Key is Empty."}` |
| Invalid-key body | `{"status": 401, "message": "Secret Key is Invalid."}` |
| Over-limit body | `{"status": 429, "message": "Rate limit exceeded."}`, plus a `Retry-After` header |
| Rate limit headers | `X-RateLimit-Limit`, `X-RateLimit-Remaining`, `X-RateLimit-Reset` on each response to a limited API key |
| Rate limit config | `serve.tiers.<name>.rate_limit`, overridden by `serve.users.<key>.rate_limit` |
| Disable auth | `--no-key` (all requests allowed) |
| Config location | `serve.api_secret` and `serve.users` in `unshackle.yaml` |