Failing to close a websocket connection when autoReconnect is set to true  #577

Issue type

• bug

Brief description

I'm authoring a service that schedules websocket connections to a diverse set of workers. When there is an intermittent connection on one worker and the websocket connection needs to be relocated to another, I can't manage to dispose the instance with failure. It doesn't help to call the function close 'cause it fails to set the variable _isClosing to true since the connection isn't open yet. Also, after the next unsuccessful attempt, it sets the variable _isReconnecting to true so that the condition for reconnection always evaluates to true and continues forever.

Steps to reproduce

• Construct a WSv2 instance with autoReconnect set to true
• Disable the network interface that provides the instance with internet connection
• Call the function close on the WSv2 instance and see for yourself that it doesn't dispose the instance while continuing to register timeouts for reconnection

Additional Notes:

• For now, I'm making use of a workaround as follows to overcome this issue:

let disposed = false
ws.dispose = async () => {
  if (!disposed) {
    ws.on('auth', ws.dispose)
    ws.on('error', ws.dispose)
    ws.on('close', () => {ws._isClosing = true; ws._isReconnecting = false})

    disposed = true
  }
  
  try {
    await ws.close()
  } catch {}
}

• With this in place, I can call the function dispose and get rid of the instance completely