title: WebSocket connection failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED
body: <p>I am new to WebRTC and WebSockets and was following this tutorial to create a WebRTC demo project, but I am unable to create a WebSocket connection. I have followed the same steps as mentioned in the project.
  His project is running on port 8080 and he mentioned ws://localhost:9090. My project is running on port 8081, but I copied his URL ws://localhost:9090 because I didn't know the significance of 9090 and I received this error and my server is node.js. i changed local host to 8081 as well but then i am getting hand shake error.</p>
  <blockquote>
  <p>WebSocket connection to 'ws://localhost:9090/' failed: Error in
  connection establishment: net::ERR_CONNECTION_REFUSED.</p>
  </blockquote>