142 lines
4.8 KiB
Markdown
142 lines
4.8 KiB
Markdown
---
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summary: "Android app (node): connection runbook + Canvas/Chat/Camera"
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read_when:
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- Pairing or reconnecting the Android node
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- Debugging Android gateway discovery or auth
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- Verifying chat history parity across clients
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---
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# Android App (Node)
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## Support snapshot
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- Role: companion node app (Android does not host the Gateway).
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- Gateway required: yes (run it on macOS, Linux, or Windows via WSL2).
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- Install: [Getting Started](/start/getting-started) + [Pairing](/gateway/pairing).
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- Gateway: [Runbook](/gateway) + [Configuration](/gateway/configuration).
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- Protocols: [Gateway protocol](/gateway/protocol) (nodes + control plane).
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## System control
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System control (launchd/systemd) lives on the Gateway host. See [Gateway](/gateway).
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## Connection Runbook
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Android node app ⇄ (mDNS/NSD + WebSocket) ⇄ **Gateway**
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Android connects directly to the Gateway WebSocket (default `ws://<host>:18789`) and uses Gateway-owned pairing.
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### Prerequisites
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- You can run the Gateway on the “master” machine.
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- Android device/emulator can reach the gateway WebSocket:
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- Same LAN with mDNS/NSD, **or**
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- Same Tailscale tailnet using Wide-Area Bonjour / unicast DNS-SD (see below), **or**
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- Manual gateway host/port (fallback)
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- You can run the CLI (`moltbot`) on the gateway machine (or via SSH).
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### 1) Start the Gateway
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```bash
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moltbot gateway --port 18789 --verbose
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```
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Confirm in logs you see something like:
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- `listening on ws://0.0.0.0:18789`
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For tailnet-only setups (recommended for Vienna ⇄ London), bind the gateway to the tailnet IP:
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- Set `gateway.bind: "tailnet"` in `~/.clawdbot/moltbot.json` on the gateway host.
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- Restart the Gateway / macOS menubar app.
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### 2) Verify discovery (optional)
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From the gateway machine:
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```bash
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dns-sd -B _moltbot-gw._tcp local.
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```
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More debugging notes: [Bonjour](/gateway/bonjour).
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#### Tailnet (Vienna ⇄ London) discovery via unicast DNS-SD
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Android NSD/mDNS discovery won’t cross networks. If your Android node and the gateway are on different networks but connected via Tailscale, use Wide-Area Bonjour / unicast DNS-SD instead:
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1) Set up a DNS-SD zone (example `moltbot.internal.`) on the gateway host and publish `_moltbot-gw._tcp` records.
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2) Configure Tailscale split DNS for `moltbot.internal` pointing at that DNS server.
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Details and example CoreDNS config: [Bonjour](/gateway/bonjour).
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### 3) Connect from Android
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In the Android app:
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- The app keeps its gateway connection alive via a **foreground service** (persistent notification).
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- Open **Settings**.
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- Under **Discovered Gateways**, select your gateway and hit **Connect**.
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- If mDNS is blocked, use **Advanced → Manual Gateway** (host + port) and **Connect (Manual)**.
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After the first successful pairing, Android auto-reconnects on launch:
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- Manual endpoint (if enabled), otherwise
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- The last discovered gateway (best-effort).
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### 4) Approve pairing (CLI)
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On the gateway machine:
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```bash
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moltbot nodes pending
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moltbot nodes approve <requestId>
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```
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Pairing details: [Gateway pairing](/gateway/pairing).
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### 5) Verify the node is connected
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- Via nodes status:
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```bash
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moltbot nodes status
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```
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- Via Gateway:
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```bash
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moltbot gateway call node.list --params "{}"
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```
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### 6) Chat + history
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The Android node’s Chat sheet uses the gateway’s **primary session key** (`main`), so history and replies are shared with WebChat and other clients:
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- History: `chat.history`
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- Send: `chat.send`
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- Push updates (best-effort): `chat.subscribe` → `event:"chat"`
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### 7) Canvas + camera
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#### Gateway Canvas Host (recommended for web content)
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If you want the node to show real HTML/CSS/JS that the agent can edit on disk, point the node at the Gateway canvas host.
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Note: nodes use the standalone canvas host on `canvasHost.port` (default `18793`).
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1) Create `~/clawd/canvas/index.html` on the gateway host.
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2) Navigate the node to it (LAN):
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```bash
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moltbot nodes invoke --node "<Android Node>" --command canvas.navigate --params '{"url":"http://<gateway-hostname>.local:18793/__moltbot__/canvas/"}'
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```
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Tailnet (optional): if both devices are on Tailscale, use a MagicDNS name or tailnet IP instead of `.local`, e.g. `http://<gateway-magicdns>:18793/__moltbot__/canvas/`.
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This server injects a live-reload client into HTML and reloads on file changes.
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The A2UI host lives at `http://<gateway-host>:18793/__moltbot__/a2ui/`.
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Canvas commands (foreground only):
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- `canvas.eval`, `canvas.snapshot`, `canvas.navigate` (use `{"url":""}` or `{"url":"/"}` to return to the default scaffold). `canvas.snapshot` returns `{ format, base64 }` (default `format="jpeg"`).
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- A2UI: `canvas.a2ui.push`, `canvas.a2ui.reset` (`canvas.a2ui.pushJSONL` legacy alias)
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Camera commands (foreground only; permission-gated):
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- `camera.snap` (jpg)
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- `camera.clip` (mp4)
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See [Camera node](/nodes/camera) for parameters and CLI helpers.
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