net-auto-switch

A layered macOS network self-healing daemon for WiFi and Clash Verge.

English | Simplified Chinese

Why

When the network degrades, the problem may be physical WiFi, a weak proxy node, an expired subscription, or a stale Clash profile. net-auto-switch separates those layers and repairs them in order: get online first, then optimize proxy quality.

Features

• Layered orchestration - run WiFi checks before proxy checks.
• Optional WiFi healing - scan visible networks, compare latency/loss, and switch only when improvement is meaningful.
• Smart Clash node selection - group nodes by region, test delay, and fall back by priority.
• Profile fallback - switch Clash Verge subscriptions when every node fails.
• Dry-run mode - rehearse a full cycle with zero side effects.
• Rate limits and cooldowns - avoid flapping between nodes, profiles, or WiFi networks.
• Desktop notifications - show real switches, including exit operator labels when available.
• Launch at login - install a launchd service with auto-restart and log rotation.

Quick Start

curl -fsSL https://raw.githubusercontent.com/OctopusGarage/net-auto-switch/main/install.sh | bash

The installer downloads the latest release, syncs dependencies with uv, creates a global net-auto-switch command, and runs the guided setup wizard.

Manual setup:

git clone https://github.com/OctopusGarage/net-auto-switch.git
cd net-auto-switch
uv sync
uv run net-auto-switch init

Daily Commands

net-auto-switch init
net-auto-switch --once --dry-run
net-auto-switch --once
net-auto-switch
net-auto-switch update
net-auto-switch whois github.com
net-auto-switch connections --whois

How It Works

cli.py
  -> orchestrator.py
       -> wifi.py
       -> clash.py
       -> config.py

Each cycle:

1. Load and validate config.toml.
2. Check the WiFi layer if enabled.
3. Check current Clash group/node health.
4. Keep the current node if it is healthy.
5. Test candidates inside the preferred group.
6. Fall back across configured regions.
7. Fall back to profile switching if all nodes are unreachable.
8. Notify only on real switches.

Configuration

All tunable values live in config.toml; config.example.toml is the tracked template.

Key areas:

Area	What you control
Clash API	Controller port, secret, group name, proxy port, profile path.
Regions	Regex groups such as SG, Tokyo, JP_Other, HK, or US.
Thresholds	Delay limits, packet loss, minimum improvement, required domains.
Rate limits	Max node switches per minute and profile switches per 30 minutes.
Notifications	macOS banner toggles and switch summaries.

Safety Design

• --dry-run performs checks without switching WiFi, nodes, or profiles.
• Config secrets are not committed; only examples are tracked.
• A failure in one layer is logged and isolated from the rest of the daemon.
• Cooldowns and rate limits reduce oscillation.
• Logs rotate daily and self-clean after 14 days.

Service Management

./scripts/install-launchd.sh
./scripts/service.sh status
./scripts/service.sh logs
./scripts/service.sh restart
./scripts/uninstall-launchd.sh

Or use the installed command and guided setup:

net-auto-switch init

Agent Skill

The repository includes an agent skill for diagnosing network state, current node, host ownership, and daemon health:

npx skills add OctopusGarage/net-auto-switch -y -g

Development

uv sync
uv run pytest
uv run ruff check .
uv run mypy

Architecture Decisions

Design history lives in docs/adr, including layered orchestration, dry-run behavior, release packaging, region detection, profile switching, and cross-platform service work.

Related

• git-auto-sync - local repo automation with safe staging and notifications.
• OctopusGarage - small tools for AI agents, local automation, and browser-native products.

License

MIT