Firefox Websocket security issue

Question

We have a websocket server on port 8080 setup on a Linode box. Chrome and Opera work just fine. Firefox however complains that the operation is insecure.

\"The opera

Answer 1

Beside secure ssl context and cross-origin policies, assigning some port can trigger the error as well.

What are valid http ports for Firefox? I don't know precisely, but have to be between 1500 and 64000, or the console will display:

SecurityError: The operation is insecure.

And http links will say:

This address is restricted

This address uses a network port which is normally used for purposes other than Web browsing.
Firefox has canceled the request for your protection.