📦 @goodandready/dsh-lanmode

Alpha.5 compatibility hotfix: async browser plugin initialization now retains its awaited lifecycle. See compatibility and tests and 0.6.11 patch notes.

⚡ Why DSH Fails Over Local Network (LAN)

By default, modern web browsers and the DeepSeek Harness frontend deliberately restrict access when opened from non-localhost IP addresses (e.g. 192.168.x.x or 10.x.x.x) over plain HTTP:

1. 🔒 Locked Settings & Models Tabs: The Web UI evaluates the hostname via isLoopbackHostname. If accessed over LAN, the settings service falls back to in-memory mode: all plugin configuration cards render empty, section states become "unavailable", mutations are discarded before transmission, and the Models page displays "settings are unavailable in this browser".
2. 💥 Fatal UUID Generation Crash: crypto.randomUUID() only exists in browser Secure Contexts (HTTPS or localhost). On plain HTTP across LAN, file uploads, tool calls, and session initializations crash instantly.
3. 📋 Broken Clipboard Copying: navigator.clipboard is completely disabled by browsers on non-secure origins, breaking all code snippet "Copy" buttons.
4. 🎙️ Microphone & Voice Input Blockade: Browser security engines block navigator.mediaDevices.getUserMedia on plain HTTP, making voice input via dsh-voice impossible on remote mobile phones and tablets.
5. 🛡️ Loopback-Only Core API Fencing: Core DSH methods (/api/settings.*, /api/credentials.*, /api/models.*) strictly reject requests not originating from loopback 127.0.0.1.

dsh-lanmode completely resolves all these limitations through non-invasive webServer.tapIndex HTML shims, a smart direct bridge, mDNS, Root CA generation, and an interactive settings card.

graph LR
    subgraph RemoteDevices [LAN Clients: Phone / Tablet / Laptop]
        Client[📱 Mobile Safari / 💻 Laptop: dsh.local:3088] -->|mDNS & HTTPS| Bridge[dsh-lanmode Smart Direct Bridge]
    end

    subgraph ShimsLayer [tapIndex Injected Client Shims & PWA]
        Bridge --> Shim1[🔓 Loopback Hostname Bypass: Unlocks Settings & Models]
        Bridge --> Shim2[🆔 RFC 4122 crypto.randomUUID Polyfill]
        Bridge --> Shim3[📋 Fallback navigator.clipboard Polyfill]
        Bridge --> Shim4[🔐 Local Root CA & TLS: Unlocks WebRTC Microphone]
        Bridge --> Shim5[📱 PWA Manifest & Safe-Area Viewport]
        Bridge --> Shim6[🔔 Background Web Notifications on turn/end]
    end

    subgraph HostBackend [DSH Host Core]
        Bridge --> HeaderRewrite[Loopback Host/Origin Header Rewriter]
        HeaderRewrite --> PrivilegedAPI[Core Settings, Credentials & Models API]
    end

    subgraph Output [Result]
        Shim1 --> FullWeb[✅ 100% Fully Functional Web UI Across Entire LAN]
        Shim2 --> FullWeb
        Shim3 --> FullWeb
        Shim4 --> FullWeb
        Shim5 --> FullWeb
        Shim6 --> FullWeb
        PrivilegedAPI --> FullWeb
    end

    style RemoteDevices fill:#1e1e2e,stroke:#89b4fa,stroke-width:2px,color:#cdd6f4
    style ShimsLayer fill:#181825,stroke:#cba6f7,stroke-width:2px,color:#cdd6f4
    style HostBackend fill:#11111b,stroke:#a6e3a1,stroke-width:2px,color:#cdd6f4
    style Output fill:#181825,stroke:#f38ba8,stroke-width:2px,color:#cdd6f4

✨ Full Feature Breakdown

1. 📱 /mobileqr Command & Instant QR Code Access

• Registers tool /mobileqr: generates a clean SVG QR code with the active LAN URL and session token (https://dsh.local:3088/?token=...). Point your phone camera at the screen to connect immediately.
• QR codes are also accessible in the Settings card and on /dsh-lanmode/health.

2. 📲 PWA & Mobile Standalone Mode

• Route /dsh-lanmode/manifest.json and meta tags viewport-fit=cover, apple-mobile-web-app-capable, theme-color.
• Adding DSH to your Home Screen on iOS/Android launches it as a standalone app without browser URL bars and with notch-aware safe areas.

3. 🌐 Automatic mDNS (dsh.local)

• Built-in lightweight UDP 5353 responder: announces dsh.local across your local network. No need to memorize shifting IP addresses.

4. 🔐 Local Root CA for Permanent Trusted HTTPS

• Generates a two-tier certificate structure: dsh-lanmode Local Root CA (10-year validity) $\rightarrow$ Server Certificate (with SAN for dsh.local, LAN IPs, and localhost).
• Download GET /dsh-lanmode/ca.crt: install the profile once on your iPhone, iPad, or Android to enjoy persistent trusted HTTPS. Voice input via dsh-voice works flawlessly.

5. 🔔 Background Web Notifications (turn/end)

• Hooks into turn/end and approval/asked session events.
• When the tab or phone is inactive (document.hidden), dispatches a native push notification. Tapping the notification immediately refocuses the chat window.

6. 🎨 Settings Card in «Settings → Plugins» (lib/client.js)

• Interactive plugin card following DSH design guidelines:
  • Connection status & active mode;
  • One-click LAN URL copying;
  • In-card QR code toggle;
  • One-click background notification toggle;
  • Download Root CA link (ca.crt).

7. 🛡️ Access Control & Optional LAN PIN

• unlockPrivileged: Master gate for settings & credentials mutation from LAN.
• lanPin: Optional PIN code (disabled by default). When set, LAN guests can chat freely, but changing system settings or API keys requires PIN authentication.
• CIDR Subnet Filtering: Restrict access to trusted subnets (allow: ["192.168.77.0/24"]).

📦 Quick Installation

dsh plugin --profile web add @goodandready/dsh-lanmode

⚙️ Configuration Reference (settings.yaml)

dsh-lanmode:
  mode: direct             # 'direct', 'proxy', or 'auto'
  directHost: 0.0.0.0
  directPort: 3088
  mdns: true               # Announce dsh.local in LAN
  pwa: true                # PWA manifest, splash screen & mobile viewport
  mobileEnterSends: false  # When false (default), Enter adds newline on mobile touch
  tls: self-signed         # 'self-signed' (with Root CA), 'files', or 'off'
  unlockPrivileged: true   # Permit settings & credentials from LAN
  lanPin: ""               # Optional PIN code for settings from LAN
  tunnel: off              # Cloudflare WAN tunnel: 'off', 'quick', or 'named'
  tunnelToken: ""          # Cloudflare named tunnel token
  tunnelPin: true          # Require PIN for requests from WAN
  allow:
    - 192.168.0.0/16
    - 10.0.0.0/8

📱 Mobile & WAN Modernization Suite (39 Features)

• Mobile Touch: iOS anti-zoom (16px), safe-area insets, 44px touch targets, auto-focus suppression, edge swipe gestures, auto-collapsing sidebar, FAB button, opt-in mobileEnterSends.
• Quick Access UI: Sidebar footer quick QR button, interactive modal with QR, URL copy and Root CA download, server startup terminal ASCII QR code.
• Network Reliability: Transparent Brotli & Gzip streaming compression, 25s WebSocket heartbeat against carrier drops, visibility change fast reconnect, RTT ping latency display.
• Security & Roster: User-Agent device recognition (iPhone, Android, Windows, Mac), live presence & activity tracking, individual device session revoke, emergency kill switch.
• Firewall & Network Stack: Automated Windows Defender Firewall, Linux UFW and firewalld management, WSL2 host IP discovery, Tailscale CGNAT detection, diagnostic /probe endpoint.
• PIN & PWA Resilience: Native client PIN prompt modal with auto-retry, brute-force rate limiting (5 attempts / 30s lockout), PWA memory eviction state mirror.
• Cloudflare WAN Tunnels: Built-in zero-config Quick Tunnels and Named Tunnels, public URL auto-parsing, dynamic start/stop toggle, mandatory WAN PIN protection.

📄 License

MIT © GooDAnDReaDY