# RustDesk web client

Browser-based RustDesk client embedded in `rustdesk-server`. Surfaced from the
admin dashboard as a "Connect" button on the Devices page.

## Architecture (one-liner)

Plain TypeScript SPA → talks WebSocket directly to `hbbs:21118` (rendezvous)
and `hbbr:21119` (relay) → `protobufjs` for wire format → `libsodium-wrappers`
for crypto → WebCodecs for video/audio decode → `<canvas>` for display.

No frameworks. ~1 MB minified.

## Building

```sh
./build.sh        # bundles to dist/bundle.{js,css}
git add dist/
```

`dist/` is committed so `cargo build -p hbbs` doesn't need Node. Anyone
touching code under `src/` should re-run `./build.sh` and commit the new
`dist/` files in the same commit.

## Regenerating proto bindings

Rare — only when `libs/hbb_common` bumps and proto fields change:

```sh
npm run protogen
./build.sh
git add src/proto/generated.* dist/
```

## Layout

```
src/
  main.ts                 boot: read #custom-config, init transport
  crypto.ts               libsodium wrapper
  proto/                  generated protobufjs static modules (committed)
  transport/              rendezvous WS, relay WS, secure handshake state machine
  decode/                 video (WebCodecs VideoDecoder), audio (AudioDecoder)
  input/                  mouse/keyboard capture → protobuf MouseEvent/KeyEvent
  ui/                     canvas + toolbar + style.css
  audit.ts                POST /api/audit/conn with admin cookie
dist/
  bundle.js + .css        committed esbuild output
```

## Wire-protocol references

- `/Users/sn0/Desktop/rustdesk-server/libs/hbb_common/protos/{rendezvous,message}.proto`
- `/Users/sn0/Desktop/rustdesk/src/client.rs` — desktop-client connect/secure/login state machine
- `/Users/sn0/Desktop/rustdesk-server/libs/hbb_common/src/tcp.rs:296-344` — secretbox nonce derivation (8-byte LE counter, separate per direction)