Why is the WebSocket not able to establish a connection with the server?

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There can be several reasons why a WebSocket may not be able to establish a connection with the server:

1. Firewall or network restrictions: Firewalls or network restrictions may prevent WebSocket connections from being established. Some network administrators may also block WebSocket connections for security reasons.

2. Server configuration issues: WebSocket connections require specific configuration on the server-side, and if this is not set up correctly, the connection may fail. This can include issues with port settings, server software, or SSL certificates.

3. Client-side issues: If there are issues with the client-side code, it may prevent the WebSocket connection from being established. This can include problems with the browser or device, or missing dependencies that are required for the WebSocket to work.

4. Connection termination: Sometimes, the server or network may forcibly terminate the WebSocket connection for various reasons, such as excessive usage or errors on the server-side.

Overall, troubleshooting WebSocket connection issues may require careful examination of all of these factors to determine the underlying cause of the problem.