93 lines
3.4 KiB
Markdown
93 lines
3.4 KiB
Markdown
---
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summary: "Gateway-owned node pairing (Option B) for iOS and other remote nodes"
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read_when:
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- Implementing node pairing approvals without macOS UI
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- Adding CLI flows for approving remote nodes
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- Extending gateway protocol with node management
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---
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# Gateway-owned pairing (Option B)
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In Gateway-owned pairing, the **Gateway** is the source of truth for which nodes
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are allowed to join. UIs (macOS app, future clients) are just frontends that
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approve or reject pending requests.
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**Important:** WS nodes use **device pairing** (role `node`) during `connect`.
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`node.pair.*` is a separate pairing store and does **not** gate the WS handshake.
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Only clients that explicitly call `node.pair.*` use this flow.
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## Concepts
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- **Pending request**: a node asked to join; requires approval.
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- **Paired node**: approved node with an issued auth token.
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- **Transport**: the Gateway WS endpoint forwards requests but does not decide
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membership. (Legacy TCP bridge support is deprecated/removed.)
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## How pairing works
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1. A node connects to the Gateway WS and requests pairing.
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2. The Gateway stores a **pending request** and emits `node.pair.requested`.
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3. You approve or reject the request (CLI or UI).
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4. On approval, the Gateway issues a **new token** (tokens are rotated on re‑pair).
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5. The node reconnects using the token and is now “paired”.
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Pending requests expire automatically after **5 minutes**.
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## CLI workflow (headless friendly)
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```bash
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clawdbot nodes pending
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clawdbot nodes approve <requestId>
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clawdbot nodes reject <requestId>
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clawdbot nodes status
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clawdbot nodes rename --node <id|name|ip> --name "Living Room iPad"
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```
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`nodes status` shows paired/connected nodes and their capabilities.
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## API surface (gateway protocol)
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Events:
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- `node.pair.requested` — emitted when a new pending request is created.
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- `node.pair.resolved` — emitted when a request is approved/rejected/expired.
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Methods:
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- `node.pair.request` — create or reuse a pending request.
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- `node.pair.list` — list pending + paired nodes.
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- `node.pair.approve` — approve a pending request (issues token).
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- `node.pair.reject` — reject a pending request.
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- `node.pair.verify` — verify `{ nodeId, token }`.
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Notes:
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- `node.pair.request` is idempotent per node: repeated calls return the same
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pending request.
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- Approval **always** generates a fresh token; no token is ever returned from
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`node.pair.request`.
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- Requests may include `silent: true` as a hint for auto-approval flows.
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## Auto-approval (macOS app)
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The macOS app can optionally attempt a **silent approval** when:
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- the request is marked `silent`, and
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- the app can verify an SSH connection to the gateway host using the same user.
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If silent approval fails, it falls back to the normal “Approve/Reject” prompt.
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## Storage (local, private)
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Pairing state is stored under the Gateway state directory (default `~/.clawdbot`):
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- `~/.clawdbot/nodes/paired.json`
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- `~/.clawdbot/nodes/pending.json`
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If you override `CLAWDBOT_STATE_DIR`, the `nodes/` folder moves with it.
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Security notes:
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- Tokens are secrets; treat `paired.json` as sensitive.
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- Rotating a token requires re-approval (or deleting the node entry).
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## Transport behavior
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- The transport is **stateless**; it does not store membership.
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- If the Gateway is offline or pairing is disabled, nodes cannot pair.
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- If the Gateway is in remote mode, pairing still happens against the remote Gateway’s store.
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