1. Debugging a Real-Time Chat Server
Backend DeveloperBackground
A developer is building a chat application and needs to verify that the backend server correctly receives, processes, and broadcasts messages to connected clients.
Problem
Manually writing client-side connection scripts just to test basic message delivery is time-consuming.
How to use
Enter the local server URL ws://localhost:8080/chat, set the subprotocol to chat, and click connect. Send a JSON message like {"user": "Alice", "text": "Hello"}.
URL: ws://localhost:8080/chat, Subprotocol: chatOutcome
The connection opens successfully, the sent message is logged, and the server's broadcast response is immediately displayed in the incoming message feed.