nexusbridgehub 0.2.3

Universal bridge for distributed bot control: bot -> server -> user worker

NexusBridgeHub

Universal bridge for distributed bot control: bot → server → user worker.

Add a thin integration layer to any Python bot or automation project — keep your business logic local, control it remotely through a central server.

Русская документация: README.ru.md · Деплой на VPS: docs/DEPLOY.ru.md · Проверка: docs/TESTING.ru.md

Python versions

Version	Status
3.10 and below	Not supported — pip will refuse to install
3.11 – 3.14	Fully supported — every release is tested in CI on 3.11, 3.12, 3.13, and 3.14

Requires Python 3.11+. Check your version: python --version.

Architecture

┌─────────────┐   JWT controller  ┌──────────────┐   JWT worker   ┌─────────────────┐
│ Telegram    │ ────────────────► │NexusBridgeHub│ ◄───────────── │ User Worker App │
│ Bot / API   │                   │   Server     │                │ (local runtime) │
└─────────────┘                   └──────────────┘                └─────────────────┘

Component	Role
Server	Routes commands from bot to the correct user's worker
BridgeClient	Embedded in a project on the user's machine; executes registered functions
BridgeController	Used by a bot or API to invoke remote functions
WorkerApp	Thin standalone client; pairs via code, no secrets in binary

Security model

• JWT tokens — workers and controllers authenticate with short-lived tokens (no hardcoded secrets in the app)
• Pair codes — bot generates 8-char code; user enters it in the worker app → receives JWT
• Encrypted server URL — WSS address stored as AES-256-GCM blob with PBKDF2 key derivation + machine fingerprint (not plain text in .exe)
• Thin client build — nexusbridgehub-build generates per-build seed; combine with PyInstaller + optional commercial obfuscators

Error handling and logging

• A failing handler does not crash the worker — the error is returned as ok: false and the worker keeps running
• Auto-reconnect on WebSocket drops (BridgeClient, WorkerApp)
• Invalid messages are logged and skipped; the session stays alive
• Log level: NEXUSBRIDGEHUB_LOG_LEVEL=DEBUG (default INFO)

Install

pip install nexusbridgehub
# or from source
pip install -e ".[dev]"

Quick start

1. Start server (VPS)

export NEXUSBRIDGEHUB_JWT_SECRET="your-48-char-minimum-secret-key-here"
nexusbridgehub-server --host 0.0.0.0 --port 8765

2. Embed in your project (user's machine)

from nexusbridgehub import BridgeClient

bridge = BridgeClient(
    server_url="wss://bridge.example.com:8765",
    token=user_jwt,
    project_id="taskrelay",
    user_id=str(user_id),
)
bridge.register("run_task", run_task)
bridge.register("worker_status", get_worker_status)
await bridge.run()

3. Bot side (controller on VPS)

from nexusbridgehub import AuthManager, BridgeController
from nexusbridgehub.protocol import Role

auth = AuthManager(os.environ["NEXUSBRIDGEHUB_JWT_SECRET"])

# Generate pair code for user (show in Telegram)
code = auth.create_pair_code(project_id="taskrelay", user_id=str(user_id))

# After user paired — invoke remote functions
bot_jwt = auth.create_token(role=Role.CONTROLLER, project_id="taskrelay", user_id=str(user_id))
ctrl = BridgeController(
    server_url="wss://bridge.example.com:8765",
    token=bot_jwt,
    project_id="taskrelay",
    user_id=str(user_id),
)
result = await ctrl.invoke("run_task", {"job_id": "job-42"})

4. Build standalone worker binary

Build a distributable executable for users (no Python required on their machine):

# Install with builder dependencies
pip install nexusbridgehub[builder]

# Build worker binary with encrypted server URL
nexusbridgehub --server-url wss://bridge.example.com:8765

# Build with custom handlers
nexusbridgehub \
    --server-url wss://bridge.example.com:8765 \
    --register-code handlers.py \
    --icon app.ico \
    --name myapp-worker

Output: Single-file executable in ./dist/ (Windows: .exe, macOS/Linux: binary)

Features:

• Encrypted server URL (AES-256-GCM + machine fingerprint)
• Custom command handlers embedded
• No Python installation needed
• Cross-platform: Windows, macOS, Linux

See docs/BUILD.md for details and docs/CI-CD.md for automated multi-platform builds.

Per-user workers

Each end user runs a worker app on their own machine:

1. User opens the bot → bot shows a pair code
2. User runs the worker with that code → worker connects to your bridge server
3. Bot sends run_task, worker_status, etc. → commands execute on the user's machine
4. Local resources stay on the user's device — the bot only orchestrates

See examples/minimal/ for a step-by-step RU/EN worker test, examples/worker_integration.py (EN) or examples/worker_integration.ru.py (RU) for project integration stubs.

Protocol

JSON messages over WebSocket:

Type	Direction	Purpose
register	client → server	Join as worker or controller
invoke	controller → worker	Call registered function
result	worker → controller	Return value or error
pair_request	worker → server	Redeem pair code for JWT

Deployment

Production guide (VPS, systemd, WSS, Hetzner/Contabo): docs/DEPLOY.ru.md

Development

pip install -e ".[dev]"
pytest
python -m build   # PyPI wheel
python -m twine check dist/*

Release guide: docs/PUBLISH.ru.md

License

MIT