How to Use the Interactive WebSocket Client & Echo Tester
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1
Enter your target WebSocket server URL (e.g., wss://echo.websocket.events or custom API endpoint).
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2
Click "Connect" to establish a bidirectional socket connection.
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3
Type a text message or JSON payload in the compose window and click "Send Payload".
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4
Monitor the live console stream for incoming messages, connection state transitions, and close event codes.
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5
Filter logs between Sent, Received, and System events, or click "Clear Console".
Practical Example & Use Case
Common Real-World Scenario
Testing real-time chat APIs, financial ticker streams, or IoT telemetry endpoints during development without opening a terminal debugger.
Technical Notes & Limitations
Browser Engine Architecture
Web browsers restrict connections from HTTPS pages to secure WSS endpoints unless running in local development (localhost).
Frequently Asked Questions
Why won't it connect to ws:// (unencrypted)?
When WebUtilities is served over HTTPS, the browser's Mixed Content security policy requires secure WebSockets (wss://) to protect data integrity.