vibetunnel/linux/Makefile
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.

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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.

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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.

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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.

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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

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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\!

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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.

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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

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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

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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)

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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

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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.

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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

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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

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Makefile

# VibeTunnel Linux Makefile
# Compatible with VibeTunnel macOS app
.PHONY: build clean test install dev deps web help
# Variables
APP_NAME := vibetunnel
VERSION := 1.0.0
BUILD_DIR := build
WEB_DIR := ../web
DIST_DIR := $(WEB_DIR)/dist
# Go build flags
GO_FLAGS := -ldflags "-X main.version=$(VERSION)"
GO_BUILD := go build $(GO_FLAGS)
# Default target
all: build
help: ## Show this help message
@echo "VibeTunnel Linux Build System"
@echo "Available targets:"
@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf " %-12s %s\n", $$1, $$2}' $(MAKEFILE_LIST)
deps: ## Install dependencies
go mod download
go mod tidy
web: ## Build web assets (requires npm in ../web)
@echo "Building web assets..."
@if [ -d "$(WEB_DIR)" ]; then \
cd $(WEB_DIR) && npm install && npm run build; \
else \
echo "Warning: Web directory not found at $(WEB_DIR)"; \
echo "Make sure you're running from the linux/ subdirectory"; \
fi
build: deps ## Build the binary
@echo "Building $(APP_NAME)..."
@mkdir -p $(BUILD_DIR)
$(GO_BUILD) -o $(BUILD_DIR)/$(APP_NAME) ./cmd/vibetunnel
build-static: deps ## Build static binary
@echo "Building static $(APP_NAME)..."
@mkdir -p $(BUILD_DIR)
CGO_ENABLED=0 GOOS=linux $(GO_BUILD) -a -installsuffix cgo -o $(BUILD_DIR)/$(APP_NAME)-static ./cmd/vibetunnel
dev: build ## Build and run in development mode
@echo "Starting VibeTunnel in development mode..."
@if [ ! -d "$(DIST_DIR)" ]; then \
echo "Web assets not found. Building..."; \
$(MAKE) web; \
fi
$(BUILD_DIR)/$(APP_NAME) --serve --debug --localhost --static-path=$(DIST_DIR)
install: build ## Install to /usr/local/bin
@echo "Installing $(APP_NAME) to /usr/local/bin..."
sudo cp $(BUILD_DIR)/$(APP_NAME) /usr/local/bin/
@echo "Installation complete. Run 'vibetunnel --help' to get started."
install-user: build ## Install to ~/bin
@echo "Installing $(APP_NAME) to ~/bin..."
@mkdir -p ~/bin
cp $(BUILD_DIR)/$(APP_NAME) ~/bin/
@echo "Installation complete. Make sure ~/bin is in your PATH."
@echo "Run 'vibetunnel --help' to get started."
test: ## Run tests
go test -v ./...
test-coverage: ## Run tests with coverage
go test -v -coverprofile=coverage.out ./...
go tool cover -html=coverage.out -o coverage.html
clean: ## Clean build artifacts
rm -rf $(BUILD_DIR)
rm -f coverage.out coverage.html
release: web build-static ## Build release package
@echo "Creating release package..."
@mkdir -p $(BUILD_DIR)/release
@cp $(BUILD_DIR)/$(APP_NAME)-static $(BUILD_DIR)/release/$(APP_NAME)
@cp README.md $(BUILD_DIR)/release/ 2>/dev/null || echo "README.md not found"
@echo "Release package created in $(BUILD_DIR)/release/"
docker: ## Build Docker image
docker build -t vibetunnel-linux .
# Package targets for different distributions
.PHONY: deb rpm appimage
deb: build-static ## Create Debian package
@echo "Creating Debian package..."
@mkdir -p $(BUILD_DIR)/deb/usr/local/bin
@mkdir -p $(BUILD_DIR)/deb/DEBIAN
@cp $(BUILD_DIR)/$(APP_NAME)-static $(BUILD_DIR)/deb/usr/local/bin/$(APP_NAME)
@echo "Package: vibetunnel\nVersion: $(VERSION)\nArchitecture: amd64\nMaintainer: VibeTunnel\nDescription: Remote terminal access for Linux\n Provides remote terminal access via web browser, compatible with VibeTunnel macOS app." > $(BUILD_DIR)/deb/DEBIAN/control
@dpkg-deb --build $(BUILD_DIR)/deb $(BUILD_DIR)/$(APP_NAME)_$(VERSION)_amd64.deb
@echo "Debian package created: $(BUILD_DIR)/$(APP_NAME)_$(VERSION)_amd64.deb"
# Development helpers
.PHONY: fmt lint vet
fmt: ## Format Go code
go fmt ./...
lint: ## Lint Go code (requires golangci-lint)
golangci-lint run
vet: ## Vet Go code
go vet ./...
check: fmt vet lint test ## Run all checks
# Service management (systemd)
.PHONY: service-install service-enable service-start service-stop service-status
service-install: install ## Install systemd service
@echo "Installing systemd service..."
@echo "[Unit]\nDescription=VibeTunnel Linux\nAfter=network.target\n\n[Service]\nType=simple\nUser=$(USER)\nExecStart=/usr/local/bin/vibetunnel --serve\nRestart=always\nRestartSec=5\n\n[Install]\nWantedBy=multi-user.target" | sudo tee /etc/systemd/system/vibetunnel.service
sudo systemctl daemon-reload
@echo "Service installed. Use 'make service-enable' to enable auto-start."
service-enable: ## Enable systemd service
sudo systemctl enable vibetunnel
service-start: ## Start systemd service
sudo systemctl start vibetunnel
service-stop: ## Stop systemd service
sudo systemctl stop vibetunnel
service-status: ## Show systemd service status
systemctl status vibetunnel