134 lines
5.3 KiB
Markdown
134 lines
5.3 KiB
Markdown
# Persistent Connection Implementation Summary
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## Overview
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Modified the Chrome extension to implement persistent connection management that maintains connections until explicitly disconnected by the user.
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## Key Changes Made
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### 1. Enhanced RemoteServerClient (`utils/remote-server-client.ts`)
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#### Connection State Persistence
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- **Added persistent connection state management**:
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- `persistentConnectionEnabled = true` by default
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- `connectionStateKey = 'remoteServerConnectionState'` for storage
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- Automatic state saving/loading to chrome.storage.local
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#### New Methods Added
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- `saveConnectionState()`: Saves connection state to chrome storage
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- `loadConnectionState()`: Loads and restores connection state on startup
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- `clearConnectionState()`: Clears saved state on manual disconnect
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- `setPersistentConnection(enabled)`: Enable/disable persistent behavior
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- `isPersistentConnectionEnabled()`: Get current persistence setting
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#### Enhanced Reconnection Logic
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- **Increased max reconnection attempts**: From 10 to 50 for persistent connections
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- **Extended reconnection delays**: Up to 60 seconds for persistent connections
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- **Smarter reconnection**: Only attempts reconnection for unexpected disconnections
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- **Connection restoration**: Automatically restores connections within 24 hours
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#### Connection Lifecycle Improvements
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- **State saving on connect**: Automatically saves state when connection established
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- **State clearing on disconnect**: Clears state only on manual disconnect
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- **Robust error handling**: Better handling of connection timeouts and errors
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### 2. Enhanced Background Script (`entrypoints/background/index.ts`)
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#### Browser Event Listeners
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- **Added `initBrowserEventListeners()`** function with listeners for:
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- `chrome.runtime.onStartup`: Browser startup detection
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- `chrome.runtime.onInstalled`: Extension install/update events
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- `chrome.runtime.onSuspend`: Browser suspension events
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- `chrome.tabs.onActivated`: Tab switch monitoring
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- `chrome.windows.onFocusChanged`: Window focus monitoring
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#### Connection Health Monitoring
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- **Added `startConnectionHealthCheck()`**: 5-minute interval health checks
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- **Periodic status logging**: Regular connection status verification
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- **Proactive monitoring**: Detects and logs connection state changes
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### 3. Enhanced Popup UI (`entrypoints/popup/App.vue`)
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#### Visual Indicators
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- **Persistent connection badge**: "🔗 Persistent: Active" indicator
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- **Enhanced status text**: "Connected (Persistent)" vs "Disconnected - Click Connect for persistent connection"
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- **Persistent info message**: "🔗 Connection will persist until manually disconnected"
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#### CSS Styling
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- **`.persistent-indicator`**: Styling for persistent connection elements
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- **`.persistent-badge`**: Green gradient badge with shadow
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- **`.persistent-info`**: Info box with green accent border
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#### Status Text Updates
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- **Clear messaging**: Emphasizes persistent nature of connections
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- **User guidance**: Explains that connections persist until manual disconnect
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## Technical Implementation Details
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### Connection State Storage
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```javascript
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const state = {
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wasConnected: boolean,
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connectionTime: number,
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serverUrl: string,
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lastSaveTime: number
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}
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```
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### Reconnection Strategy
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- **Exponential backoff**: 5s, 10s, 20s, 40s, up to 60s intervals
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- **Persistent attempts**: Up to 50 attempts for persistent connections
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- **Smart restoration**: Only restores connections from last 24 hours
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### Browser Event Handling
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- **Tab switches**: Connection maintained across all tab operations
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- **Window focus**: Connection persists during window focus changes
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- **Browser suspension**: State saved before suspension, restored after
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- **Extension updates**: Connection state preserved across updates
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## Behavior Changes
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### Before Implementation
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- Manual connection required each session
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- Connections might not survive browser events
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- Limited reconnection attempts (10)
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- No connection state persistence
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### After Implementation
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- **"Connect once, stay connected"** behavior
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- **Connections persist across**:
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- Popup open/close cycles
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- Browser tab switches
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- Window focus changes
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- Extended idle periods
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- Browser suspension/resume
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- **Robust reconnection**: Up to 50 attempts with smart backoff
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- **State restoration**: Automatic connection restoration after browser restart
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- **Manual disconnect only**: Connections only terminate when explicitly disconnected
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## User Experience Improvements
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### Clear Visual Feedback
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- Persistent connection status clearly indicated
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- Real-time connection duration display
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- Visual badges and indicators for connection state
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### Predictable Behavior
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- Users know connections will persist until manually disconnected
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- No unexpected disconnections during tool operations
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- Consistent behavior across browser lifecycle events
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### Robust Connectivity
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- Automatic reconnection when server becomes available
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- Connection state restoration after browser restart
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- Extended retry attempts for better reliability
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## Testing
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- Comprehensive test plan provided in `PERSISTENT_CONNECTION_TEST_PLAN.md`
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- Covers all aspects of persistent connection behavior
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- Includes verification points and success criteria
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## Compatibility
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- Maintains backward compatibility with existing MCP clients
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- No breaking changes to tool execution or API
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- Enhanced reliability without changing core functionality
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