How to Fix: WebSocket connection failed: Error during WebSocket handshake: Unexpected response code: 400
Check the WebSocket handshake settings in your client-side code and ensure that the server is listening on a valid port.
📋 Table of Contents
To resolve the WebSocket connection failure, you need to ensure that your client-side and server-side are correctly configured for Socket.io. The error message indicates that an unexpected response code of 400 is received during the WebSocket handshake.
🔍 Why This Happens
- [Cause]
✅ Best Solutions to Fix It
Method 1: Check Server Configuration
- Step 1: Verify that the server is correctly configured to use Socket.io. Ensure that the `socket.io` package is installed and imported correctly in your server-side code.
Method 2: Check Client-Side Configuration
- Step 1: Ensure that the client-side is correctly configured to connect to the server using Socket.io. Verify that the `io` object is properly initialized and connected to the server.
🎯 Final Words
By following these steps, you should be able to resolve the WebSocket connection failure and establish a successful connection between your client-side and server-side using Socket.io.
❓ Frequently Asked Questions
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