Tool Guide

Online WebSocket connection testing tool. Connect, send, and receive messages with subprotocol support.

Enter Address: Type the target WebSocket server address starting with ws:// or wss://.
Establish Connection: Click connect, and the log stream will print real-time handshake and connection statuses.
Two-way Comm: Once connected, send custom messages to the server and receive live pushed data in the console.

Test backend long-connection APIs directly without complex page logic when developing chat rooms or stock tickers.