vibetunnel/web
Helmut Januschka b90bfd9f46
Add Go implementation of VibeTunnel server (#16)
* Add Linux implementation of VibeTunnel

This commit introduces a complete Linux port of VibeTunnel, providing feature parity with the macOS version. The implementation includes:

- Full Go-based server with identical REST API and WebSocket endpoints
- Terminal session management using PTY (pseudo-terminal) handling
- Asciinema recording format for session playback
- Compatible CLI interface matching the macOS `vt` command
- Support for all VibeTunnel features: password protection, network modes, ngrok integration
- Comprehensive build system with Makefile supporting various installation methods
- Systemd service integration for running as a system daemon

The Linux version maintains 100% compatibility with the existing web UI and can be used as a drop-in replacement for the macOS app on Linux systems.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Add comprehensive ngrok integration to Linux VibeTunnel

Implements full ngrok tunnel support for the Go/Linux version to match
the macOS Swift implementation, enabling secure public access to local
VibeTunnel instances.

- **ngrok Service**: Complete lifecycle management with status tracking
- **HTTP API**: RESTful endpoints matching macOS version
- **CLI Support**: Command-line ngrok flags and integration
- **Auto-forwarding**: Built-in HTTP request forwarding to local server

- `POST /api/ngrok/start` - Start tunnel with auth token
- `POST /api/ngrok/stop` - Stop active tunnel
- `GET /api/ngrok/status` - Get current tunnel status

- Uses `golang.ngrok.com/ngrok` SDK for native Go integration
- Thread-safe service with mutex protection
- Comprehensive error handling and logging
- Real-time status updates (disconnected/connecting/connected/error)
- Proper context cancellation for graceful shutdown

```bash
vibetunnel --serve --ngrok --ngrok-token "your_token"
vibetunnel --serve --port 4030 --ngrok --ngrok-token "your_token"
```

- Added golang.ngrok.com/ngrok v1.13.0
- Updated web packages (security fixes for puppeteer)

Maintains full API compatibility with macOS VibeTunnel for seamless
cross-platform operation and consistent web frontend integration.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* up

* Fix SSE streaming performance with byte-based approach

Addresses @badlogic's review feedback to prevent performance issues
with line-based file reading in processNewContent().

## Changes Made

### Performance Fix
- **Byte-based seeking**: Replace line counting with file position tracking
- **Efficient reads**: Only read new content since last position using file.Seek()
- **Memory optimization**: Avoid reading entire file on each update
- **Incomplete line handling**: Properly handle partial lines at file end

### Technical Details
- Changed lastLineCount *int → seenBytes *int64
- Use file.Seek(seenBytes, 0) to jump to last read position
- Read only new content with currentSize - seenBytes
- Handle incomplete lines by adjusting seek position
- Maintains same functionality with better performance

### Benefits
- **Scalability**: No longer reads entire file for each update
- **Performance**: O(new_content) instead of O(total_content)
- **Memory**: Constant memory usage regardless of file size
- **Reliability**: Handles concurrent writes and partial lines correctly

This prevents the SSE streaming from exploding in our faces as @badlogic
warned, especially for long-running sessions with large output files.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Optimize streaming performance to reduce 1+ second delays

Implements multiple optimizations to address user-reported 1+ second delay
between typing and stream rendering:

## PTY Reading Optimizations
- **Reduced sleep times**: 100ms → 1ms for EOF checks
- **Faster polling**: 10ms → 1ms for zero-byte reads
- **FIFO optimization**: 1s → 100ms for stdin EOF polling

## UTF-8 Buffering Improvements
- **Timeout-based flushing**: 5ms timer for incomplete UTF-8 sequences
- **Real-time streaming**: Don't wait for complete sequences in interactive mode
- **Smart buffering**: Balance correctness with responsiveness

## File I/O Optimizations
- **Immediate sync**: Call file.Sync() after each write for instant fsnotify
- **Reduced SSE timeout**: 1s → 100ms for session alive checks
- **Better responsiveness**: Ensure file changes trigger immediately

## Technical Changes
- Added StreamWriter.scheduleFlush() with 5ms timeout
- Enhanced writeEvent() with conditional file syncing
- Optimized PTY read/write loop timing
- Improved SSE streaming frequency

These changes target the main bottlenecks identified in the
PTY → file → fsnotify → SSE → browser pipeline.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix critical stdin polling delay causing 1+ second input lag

- Reduced FIFO EOF polling from 100ms to 1ms
- Reduced EAGAIN polling from 1ms to 100µs
- Added immediate continue after successful writes
- This eliminates the major input delay bottleneck

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix critical performance issues causing resource leaks and CPU burns

Performance optimizations based on code review feedback:

1. **Fix SSE goroutine leaks**:
   - Added client disconnect detection to SSE streams
   - Propagate write errors to detect when clients close connections
   - Prevents memory leaks from abandoned streaming goroutines

2. **Fix PTY busy-loop CPU burn**:
   - Increased sleep from 1ms to 10ms in idle scenarios
   - Reduces CPU wake-ups from 1000/s to 100/s (10x improvement)
   - Significantly reduces CPU usage when PTY is idle

3. **Multi-stream disconnect detection**:
   - Added error checking to multi-stream write operations
   - Prevents goroutine leaks in multi-session streaming

These fixes address the "thing of the things" - performance\!

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Standardize session creation API response format to match Rust server

Changes:
- Updated Go server session creation response to include success/message/error fields
- Now returns: {"success": true, "message": "Session created successfully", "error": null, "sessionId": "..."}
- Maintains backward compatibility with existing sessionId field
- Go server already supported both input formats (cmdline/command, cwd/workingDir)

This achieves protocol compatibility between Go and Rust implementations.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix delete endpoint to return 200 OK with JSON response

- Changed handleKillSession to return 200 OK instead of 204 No Content
- Added JSON response with success/message fields for consistency
- Fixes benchmark tool compatibility expecting 200 response

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Update Go server API to match Rust format exactly

- Use 'command' array instead of 'cmdline'
- Use 'workingDir' instead of 'cwd'
- Remove compatibility shims for cleaner API
- Better error messages matching Rust server

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Major performance optimizations for Go server

- Remove 100ms artificial delay in session creation (-100ms per session)
- Optimize PTY I/O handling with reduced polling intervals
- Implement persistent stdin pipes to avoid repeated open/close
- Batch file sync operations to reduce I/O overhead (5ms batching)
- Remove blocking status updates from API handlers
- Increase SSE session check interval from 100ms to 1s

Target: Match Rust performance (60ms avg latency, 16+ ops/sec)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix O_NONBLOCK compilation issue

* Add comprehensive TLS/HTTPS support with Caddy integration

Features:
- Optional TLS support via CLI flags (defaults to HTTP like Rust)
- Self-signed certificate generation for localhost development
- Let's Encrypt automatic certificate management for domains
- Custom certificate support for production environments
- HTTP to HTTPS redirect capability
- Maintains 100% backward compatibility with Rust version

Usage examples:
- Default HTTP: ./vibetunnel --serve (same as Rust)
- HTTPS with self-signed: ./vibetunnel --serve --tls
- HTTPS with domain: ./vibetunnel --serve --tls --tls-domain example.com
- HTTPS with custom certs: ./vibetunnel --serve --tls --tls-cert cert.pem --tls-key key.pem

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix terminal sizing issues and implement dynamic resize support

Backend changes:
- Add handleResizeSession API endpoint for dynamic terminal resizing
- Implement Session.Resize() and PTY.Resize() methods with proper validation
- Add session registry in Manager to track running sessions with PTY access
- Fix stdin error handling to prevent session crashes on EAGAIN errors
- Write resize events to asciinema stream for frontend synchronization
- Update default terminal dimensions from 80x24 to 120x30

Frontend changes:
- Add width/height parameters to SessionCreateData interface
- Calculate appropriate terminal dimensions when creating sessions
- Implement automatic resize API calls when terminal dimensions change
- Add terminal-resize event dispatch for backend synchronization
- Ensure resize events bubble properly for session management

Fixes nvim being stuck at 80x24 by implementing proper terminal
dimension management and dynamic resizing capabilities.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Add client-side resize caching and Hack Nerd Font support

- Implement resize request caching to prevent redundant API calls
- Add debouncing to terminal resize events (250ms delay)
- Replace ResizeObserver with window.resize events only to eliminate pixel-level jitter
- Add Hack Nerd Font Mono as primary terminal font with Fira Code fallback
- Update session creation to use conservative 120x30 defaults
- Fix terminal dimension calculation in normal mode

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Add comprehensive XTerm color and rendering enhancements

- Complete 256-color palette support with CSS variables (0-255)
- Enhanced XTerm configuration with proper terminal options
- True xterm-compatible 16-color theme
- Text attribute support: bold, italic, underline, dim, strikethrough, inverse, invisible
- Cursor blinking with CSS animation
- Font rendering optimizations (disabled ligatures, antialiasing)
- Terminal-specific CSS styling for better rendering
- Mac option key as meta, alt-click cursor movement
- Selection colors and inactive selection support

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
2025-06-18 23:32:35 +02:00
..
scripts Fix linter formatting issues 2025-06-17 01:52:52 +02:00
src Add Go implementation of VibeTunnel server (#16) 2025-06-18 23:32:35 +02:00
.gitignore Add PTY fallback to tty-fwd with race condition fix 2025-06-18 12:46:25 +02:00
.prettierignore lint web 2025-06-17 01:03:37 +02:00
.prettierrc.json lint web 2025-06-17 01:03:37 +02:00
CLAUDE.md add mention of linter 2025-06-17 01:12:13 +02:00
eslint.config.js lint web 2025-06-17 01:03:37 +02:00
package-lock.json Add Go implementation of VibeTunnel server (#16) 2025-06-18 23:32:35 +02:00
package.json web fu - sorry 2025-06-18 20:12:07 +02:00
postcss.config.js Add complete web frontend for terminal multiplexer 2025-06-16 00:29:33 +02:00
README.md Fix linter formatting issues 2025-06-17 01:52:52 +02:00
tailwind.config.js Web WIP 2025-06-16 03:35:14 +02:00
tsconfig.client.json Web WIP 2025-06-16 03:35:14 +02:00
tsconfig.json Add complete web frontend for terminal multiplexer 2025-06-16 00:29:33 +02:00
vitest.config.ts feat: add integration tests and fix compatibility issues 2025-06-18 19:39:42 +02:00
vitest.integration.config.ts feat: add integration tests and fix compatibility issues 2025-06-18 19:39:42 +02:00

VibeTunnel Web Frontend

A modern web interface for the VibeTunnel terminal multiplexer built with TypeScript, Lit Elements, and XTerm.js. Provides professional terminal emulation with mobile-optimized controls and real-time session management.

Features

  • Professional Terminal Emulation using XTerm.js with full VT compatibility
  • Real-time Session Management with live streaming via Server-Sent Events
  • Mobile-Optimized Interface with touch controls and responsive design
  • Session Snapshots for previewing terminal output in card view
  • Interactive Terminal Input with full keyboard support and mobile input overlay
  • VS Code Dark Theme with consistent styling throughout
  • Custom Font Support using Fira Code with programming ligatures
  • File Browser for selecting working directories
  • Session Lifecycle Management (create, monitor, kill, cleanup)

Quick Start

  1. Install dependencies:

    npm install
    
  2. Start development server:

    npm run dev
    
  3. Open browser: Navigate to http://localhost:3000

Development Scripts

# Development (auto-rebuild and watch)
npm run dev                 # Start full dev environment
npm run watch:server        # Watch server TypeScript only
npm run watch:css          # Watch CSS changes only

# Building
npm run build              # Build everything for production
npm run build:server       # Build server TypeScript
npm run build:client       # Build client TypeScript  
npm run build:css          # Build Tailwind CSS

# Bundling (ES modules)
npm run bundle             # Bundle client code
npm run bundle:watch       # Watch and bundle client code

# Code Quality
npm run lint               # Check ESLint issues
npm run lint:fix           # Auto-fix ESLint issues
npm run format             # Format code with Prettier
npm run format:check       # Check code formatting
npm run pre-commit         # Run all quality checks

# Testing
npm run test               # Run Jest tests
npm run test:watch         # Watch and run tests

Architecture

Client-Side Components

Built with Lit Elements (Web Components):

src/client/
├── app.ts                    # Main application controller
├── components/
│   ├── app-header.ts         # Main navigation and controls
│   ├── session-list.ts       # Session grid with cards
│   ├── session-card.ts       # Individual session preview
│   ├── session-view.ts       # Full terminal view
│   ├── session-create-form.ts # New session modal
│   └── file-browser.ts       # Directory selection
├── renderer.ts               # XTerm.js terminal renderer
└── scale-fit-addon.ts        # Custom terminal scaling

Server-Side Architecture

Express.js server with tty-fwd integration:

src/
├── server.ts                 # Main Express server
└── input.css                # Tailwind source styles

Build Output

dist/                         # Compiled TypeScript
public/
├── bundle/
│   ├── client-bundle.js      # Bundled client code
│   ├── renderer.js           # Terminal renderer
│   └── output.css            # Compiled styles
├── fonts/                    # Fira Code font files
└── index.html                # Main HTML

API Reference

Session Management

GET    /api/sessions                    # List all sessions
POST   /api/sessions                    # Create new session
DELETE /api/sessions/:id                # Kill session
DELETE /api/sessions/:id/cleanup        # Clean up session files
POST   /api/cleanup-exited              # Clean all exited sessions

Terminal I/O

GET    /api/sessions/:id/stream         # Live session stream (SSE)
GET    /api/sessions/:id/snapshot       # Session snapshot (cast format)
POST   /api/sessions/:id/input          # Send input to session

File System

GET    /api/fs/browse?path=<path>       # Browse directories
POST   /api/mkdir                       # Create directory

Technology Stack

  • Frontend Framework: Lit Elements (Web Components)
  • Terminal Emulation: XTerm.js with custom addons
  • Styling: Tailwind CSS with VS Code theme
  • Typography: Fira Code Variable Font
  • Backend: Express.js + TypeScript
  • Terminal Backend: tty-fwd (Rust binary)
  • Build Tools: TypeScript, ESBuild, Tailwind
  • Code Quality: ESLint, Prettier, Pre-commit hooks

Mobile Support

  • Touch-optimized scrolling with proper overscroll prevention
  • Mobile input overlay with virtual keyboard support
  • Responsive design with mobile-first approach
  • Gesture navigation (swipe from edge to go back)
  • Pull-to-refresh prevention during terminal interaction

Browser Compatibility

  • Modern ES6+ browsers (Chrome 63+, Firefox 67+, Safari 13+)
  • Mobile browsers with full touch support
  • Progressive enhancement with graceful degradation

Deployment

  1. Build for production:

    npm run build
    
  2. Start production server:

    npm start
    
  3. Environment variables:

    • PORT - Server port (default: 3000)
    • TTY_FWD_CONTROL_DIR - tty-fwd control directory

Development Notes

  • Hot reload enabled in development
  • TypeScript strict mode with comprehensive type checking
  • ESLint + Prettier enforced via pre-commit hooks
  • Component-based architecture for maintainability
  • Mobile-first responsive design principles