Socket.IO Client Tester

Connect to any Socket.IO server, choose client version, set transports, namespace, query params, and send/receive events.

Production: Use your deployed Socket.IO server URL (e.g., https://yourdomain.com). Development: Use your local development server (e.g., http://localhost:8080).
Hold Ctrl/Cmd to multi-select
Disconnected
Send Event
Listen to Events
Logs
Ready.

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Socket.IO Client Tester

Socket.IO Client Tester is a comprehensive tool for testing real-time WebSocket connections with multiple Socket.IO client versions. Whether you're developing real-time applications, debugging WebSocket connections, or testing different Socket.IO server configurations, this tool provides everything you need.

This tool is particularly useful for:

  • Testing Socket.IO server connections
  • Debugging real-time communication issues
  • Comparing different Socket.IO client versions
  • Testing custom events and data transmission
  • Validating transport configurations

Key Features

Client Version Support
  • Socket.IO 4.x: Latest version with modern features
  • Socket.IO 3.x: Stable version with broad compatibility
  • Socket.IO 2.x: Legacy version support
  • Socket.IO 1.x: Classic version for older applications
Connection Options
  • Transport Selection: WebSocket and Polling support
  • Namespace Support: Test specific Socket.IO namespaces
  • Custom Paths: Configure custom Socket.IO paths
  • Query Parameters: Add authentication tokens and metadata

How to Use

1. Connection Setup
  1. Enter your Socket.IO server URL (e.g., https://api.yourdomain.com)
  2. Select the appropriate client version
  3. Configure transport options (WebSocket/Polling)
  4. Set namespace and path if needed
  5. Click "Connect" to establish connection
2. Event Testing
  1. Use "Send Event" to emit custom events
  2. Add listeners for specific events
  3. Monitor real-time logs for all activity
  4. Test different data formats (JSON/Text)

Common Use Cases

Use Case Description Example
Development Testing Test Socket.IO servers during development Connect to your development server and test events
Production Debugging Debug real-time issues in production Test live WebSocket connections and monitor logs
Version Compatibility Test different Socket.IO client versions Compare 2.x vs 4.x client behavior
Transport Testing Validate WebSocket and polling fallbacks Test connection stability across different transports

Message Logging & Event Handling

Message Logging automatically captures and displays all messages received from the Socket.IO server. The tool provides comprehensive logging for both built-in events and custom events.

Automatically Logged Events
  • 📨 message: Standard message events
  • 💬 chat message: Chat application messages
  • 🔔 notification: Server notifications
  • 🔄 update: Data updates
  • 📊 data: General data events
  • 📡 Custom Events: Any events you add listeners for
Logging Features
  • Real-time Display: Messages appear instantly in the log
  • Event Categorization: Different icons for different event types
  • Data Formatting: JSON data is properly formatted
  • Auto-scroll: Log automatically scrolls to show new messages
  • Console Logging: Detailed logs in browser console
How to Monitor Messages:
  1. Connect to your Socket.IO server
  2. Watch the Logs section for incoming messages
  3. Add Custom Listeners for specific events you want to monitor
  4. Check Browser Console for detailed debugging information

Production Deployment Best Practices

For Production Use, always use proper domain names and SSL certificates to ensure secure, reliable WebSocket connections.

Domain Configuration
  • Use Real Domains: https://yourdomain.com instead of localhost
  • SSL Certificates: Always use HTTPS/WSS for production
  • Subdomain Strategy: Consider socket.yourdomain.com for WebSocket services
  • CDN Integration: Use CDN for improved global performance
  • DNS Configuration: Proper A/AAAA records for your domain
Security Considerations
  • CORS Configuration: Allow only trusted domains
  • Authentication: Implement proper user authentication
  • Rate Limiting: Prevent abuse and DDoS attacks
  • Input Validation: Sanitize all incoming data
  • Monitoring: Track connection health and errors
Recommended Production URLs:
  • https://api.yourdomain.com - Main API endpoint
  • wss://socket.yourdomain.com - Dedicated WebSocket server
  • https://realtime.yourdomain.com - Real-time services
  • https://chat.yourdomain.com - Chat application server

Troubleshooting Connection Issues

Common Connection Problems & Solutions:
  • CORS Errors: Ensure your Socket.IO server allows connections from 8gwifi.org
  • Mixed Content: Use WSS:// for HTTPS sites, WS:// for HTTP sites
  • Localhost Issues: Localhost connections only work in development environments
  • Server Accessibility: Verify your server is accessible from the internet
  • Firewall/Proxy: Check if corporate firewalls are blocking WebSocket connections
Production Deployment Checklist:
  1. Server URL: Use your production domain (e.g., wss://yourdomain.com)
  2. CORS Configuration: Allow https://8gwifi.org in your server's CORS settings
  3. SSL Certificate: Ensure your production server has valid SSL certificates
  4. Network Access: Verify your server is accessible from external networks
  5. Socket.IO Version: Match client and server versions for compatibility
Test Servers for Development:
  • https://socket.io - Official Socket.IO demo server
  • wss://echo.websocket.org - WebSocket echo server
  • wss://ws.postman-echo.com/raw - Postman WebSocket echo
  • https://yourdomain.com - Your production Socket.IO server
  • https://api.yourdomain.com - Your production API server
URL Format Examples:
Development (Local):
  • http://localhost:8080 - Local development server
  • http://127.0.0.1:8080 - Alternative localhost format
  • http://dev.yourdomain.com - Development subdomain
Production (Deployed):
  • https://yourdomain.com - Main production domain
  • wss://yourdomain.com - Secure WebSocket connection
  • https://api.yourdomain.com - Production API server
  • https://socket.yourdomain.com - Dedicated Socket.IO server
Quick Access