title: Google app engine TCP connection Failed
body: <p>Spring boot application deployed to google app engine and a request to an endpoint respond correctly with hard-coded text as expected. Apart from the default port <code>8080</code> exposed, another <code>TCP:8595</code> is also exposed where data with be published to that port by tracking devices.</p>
  
  <p>The problem is when i tested to get tcp connection with <code>telnet projectid.appspot.com 8595</code> i get this response <code>Connecting To projectid.appspot.com...Could not open connection to the host, on port 8595: Connect failed</code>, thought locally a connection is made without failure.</p>
  
  <p>How can an application hosted in app engine expose ports?</p>
  
  <p>Disclaimer: I'm new to App Engine and GCP</p>