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WebSocket Test Client
WebSocket Test Client is a powerful online tool designed to test and validate WebSocket server connections. Whether you're developing real-time applications, debugging WebSocket issues, or validating server configurations, this tool provides instant feedback and comprehensive testing capabilities.
This tool is particularly useful for:
Testing WebSocket server connections
Debugging real-time communication issues
Validating server configurations
Testing message sending and receiving
Monitoring connection status and errors
Key Features
Connection Management
Instant Connection: Connect to WebSocket servers with one click
Protocol Conversion: Automatic HTTP to WS/WSS conversion
Status Monitoring: Real-time connection status updates
Error Handling: Comprehensive error logging and display
Message Testing
Real-time Messaging: Send and receive messages instantly
Message History: Track all sent and received messages
Format Support: Text, JSON, and binary message support
Bidirectional Testing: Test both client and server communication
How to Use
1. Connection Setup
Enter your WebSocket server URL (e.g., wss://example.com/ws)
Click "Connect" to establish the connection
Monitor the status indicator for connection feedback
Wait for "Connected" status before proceeding
2. Message Testing
Type your message in the input field
Click "Send" to transmit the message
Monitor the messages area for responses
Check for any error messages or connection issues
Supported Protocols
Protocol
Description
Use Case
WS (WebSocket)
Plain WebSocket over HTTP
Development and testing environments
WSS (WebSocket Secure)
WebSocket over HTTPS
Production environments and secure connections
HTTP to WS
Automatic conversion from HTTP URLs
Easy testing with HTTP URLs
HTTPS to WSS
Automatic conversion from HTTPS URLs
Secure connection testing
Common Use Cases
Development & Testing
Local Development: Test WebSocket servers running on localhost
Message Format Testing: Test different message structures
Production & Debugging
Server Validation: Test production WebSocket servers
Connection Issues: Debug connection problems
Performance Testing: Monitor connection stability
Error Analysis: Identify and resolve communication issues
Troubleshooting
Common Connection Issues:
CORS Errors: Ensure your server allows WebSocket connections from this domain
Protocol Mismatch: Use WSS for HTTPS servers, WS for HTTP servers
Server Not Running: Verify your WebSocket server is active and accessible
Firewall Issues: Check if WebSocket ports are open and accessible
Invalid URL Format: Ensure proper WebSocket URL format (ws:// or wss://)
Example URLs
Test Servers
wss://ws.postman-echo.com/raw - Echo server for testing
wss://echo.websocket.org - WebSocket.org echo server
ws://localhost:8080/ws - Local development server
wss://yourdomain.com/websocket - Your production server
URL Conversion Examples
http://example.com/ws → ws://example.com/ws
https://example.com/ws → wss://example.com/ws
ws://localhost:3000 → ws://localhost:3000 (no change)
wss://secure.example.com → wss://secure.example.com (no change)
About WebSockets
WebSocket is a computer communications protocol that provides full-duplex communication channels over a single TCP connection. It enables real-time, bidirectional communication between web browsers and servers, making it ideal for:
Real-time applications (chat, gaming, live updates)
Live dashboards (monitoring, analytics, notifications)