Reports

That endpoint seems to be returning values starting with 'K' and not 'S'.

I was able to run your code (using React instead of Jquery), and the websocket piece works fine.

if (data.startsWith('K,')) {
  console.log('true', { data })
  // display to page (using Jquery instead of this line if you prefer)
  document.getElementsByTagName('header')[0].innerHTML += data
}

Are you able to see a debugging statement inside your data.startsWith('S,') condition?

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