title: Socket io pre auth. with serialnumber and mac
body: <p>i would like to integrate my pellet stove into the smart home. for this i looked at the communication between smartphone app and the webserver with mitmproxy.
  It probably first logs in with its serial number and mac address to then retrieve the data via websocket.</p>
  <p>i will first try to get the data via postman and connect to the websocket. Unfortunately I do not know where to insert the part of the serial number and mac address.</p>
  <p>can someone give me a tip?</p>
  <p>thanks!</p>
  <p><a href="https://i.stack.imgur.com/lMb2F.png" rel="nofollow noreferrer">mitmproxy</a></p>