mirror of
https://github.com/imputnet/cobalt.git
synced 2025-06-28 17:38:31 +00:00
146 lines
4.6 KiB
Markdown
146 lines
4.6 KiB
Markdown
# WebSocket Connection Stability Improvements - Completion Report
|
|
|
|
## Overview
|
|
Successfully implemented comprehensive WebSocket connection stability improvements to resolve the production environment disconnection issues in the clipboard sharing application.
|
|
|
|
## Completed Improvements
|
|
|
|
### 1. GKE Load Balancer Configuration ✅
|
|
|
|
#### Helm Chart Enhancements
|
|
- **File**: `cobalt-chart/values.yaml`
|
|
- **Changes**: Added WebSocket-specific timeout configurations in Ingress annotations
|
|
- **Impact**: 1-hour connection timeout instead of default 30 seconds
|
|
|
|
#### BackendConfig Resource
|
|
- **File**: `cobalt-chart/templates/backendconfig.yaml`
|
|
- **Features**:
|
|
- 1-hour backend timeout (`timeoutSec: 3600`)
|
|
- Connection draining (60 seconds)
|
|
- Client IP session affinity for WebSocket persistence
|
|
- Custom health check targeting `/health` endpoint
|
|
- CDN disabled for WebSocket compatibility
|
|
|
|
#### Service Annotations
|
|
- **File**: `cobalt-chart/templates/service.yaml`
|
|
- **Features**:
|
|
- Links to WebSocket BackendConfig
|
|
- GKE NEG annotations for proper load balancer integration
|
|
|
|
### 2. Server-Side Connection Monitoring ✅
|
|
|
|
#### Enhanced WebSocket Server
|
|
- **File**: `api/src/core/signaling.js`
|
|
- **Features**:
|
|
- Advanced ping/pong monitoring with missed pong detection (max 3 missed)
|
|
- Health check interval every 60 seconds
|
|
- Connection age and activity tracking
|
|
- Automatic cleanup of stale connections (2+ hours old with 5+ minutes inactivity)
|
|
- Proper timer cleanup on connection close
|
|
- Enhanced logging for connection diagnostics
|
|
|
|
## Configuration Summary
|
|
|
|
### Load Balancer Timeouts
|
|
```yaml
|
|
# Ingress timeout
|
|
cloud.google.com/timeout-sec: "3600"
|
|
|
|
# Backend timeout
|
|
timeoutSec: 3600
|
|
connectionDraining:
|
|
drainingTimeoutSec: 60
|
|
```
|
|
|
|
### Connection Monitoring
|
|
```javascript
|
|
// Ping every 25 seconds
|
|
const pingInterval = setInterval(() => {
|
|
// Check for missed pongs (max 3)
|
|
// Send ping to keep connection alive
|
|
}, 25000);
|
|
|
|
// Health check every 60 seconds
|
|
const healthCheckInterval = setInterval(() => {
|
|
// Monitor connection age and activity
|
|
// Auto-cleanup stale connections
|
|
}, 60000);
|
|
```
|
|
|
|
## Deployment Instructions
|
|
|
|
### 1. Deploy Updated Helm Chart
|
|
```bash
|
|
cd cobalt-chart
|
|
helm upgrade cobalt-api . --namespace production
|
|
```
|
|
|
|
### 2. Verify Deployment
|
|
```bash
|
|
# Check BackendConfig
|
|
kubectl get backendconfig websocket-backendconfig -o yaml
|
|
|
|
# Check Service annotations
|
|
kubectl get service -o yaml | grep -A5 annotations
|
|
|
|
# Check Ingress configuration
|
|
kubectl get ingress -o yaml | grep timeout-sec
|
|
```
|
|
|
|
### 3. Monitor WebSocket Connections
|
|
```bash
|
|
# Check server logs for enhanced connection monitoring
|
|
kubectl logs -f deployment/cobalt-api | grep -E "(WebSocket|Ping|Pong|Health check)"
|
|
```
|
|
|
|
## Expected Results
|
|
|
|
### Before Implementation
|
|
- WebSocket connections disconnecting after ~30 seconds in production
|
|
- Error codes: 1005 (No status received), 1006 (Abnormal closure)
|
|
- Manual reconnection required
|
|
|
|
### After Implementation
|
|
- WebSocket connections stable for hours in production
|
|
- Automatic handling of network interruptions
|
|
- Proactive connection health monitoring
|
|
- Graceful cleanup of inactive connections
|
|
|
|
## Monitoring and Validation
|
|
|
|
### Connection Stability Metrics
|
|
- Average connection duration should increase from ~30 seconds to hours
|
|
- Reduction in abnormal closure codes (1005/1006)
|
|
- Improved user experience with fewer reconnection prompts
|
|
|
|
### Health Check Validation
|
|
```bash
|
|
# Test health endpoints
|
|
curl https://api.freesavevideo.online/health
|
|
curl https://api.freesavevideo.online/ws/health
|
|
```
|
|
|
|
### WebSocket Connection Test
|
|
```javascript
|
|
// Browser console test
|
|
const ws = new WebSocket('wss://api.freesavevideo.online/ws');
|
|
ws.onopen = () => console.log('WebSocket connected successfully');
|
|
ws.onclose = (event) => console.log(`WebSocket closed: ${event.code}`);
|
|
```
|
|
|
|
## Files Modified
|
|
|
|
1. `cobalt-chart/values.yaml` - Ingress timeout configuration
|
|
2. `cobalt-chart/templates/backendconfig.yaml` - GKE WebSocket backend config
|
|
3. `cobalt-chart/templates/service.yaml` - Service annotations for BackendConfig
|
|
4. `api/src/core/signaling.js` - Enhanced connection monitoring and health checks
|
|
|
|
## Resolution Status
|
|
✅ **COMPLETED** - All WebSocket connection stability improvements have been successfully implemented and are ready for production deployment.
|
|
|
|
The solution addresses the root cause of production disconnections by:
|
|
1. Configuring appropriate GKE load balancer timeouts for WebSocket connections
|
|
2. Adding robust server-side connection monitoring and automatic cleanup
|
|
3. Implementing proactive health checks and connection management
|
|
4. Providing comprehensive logging for ongoing monitoring
|