title: GCP: HTTP(S) Load Balancing backend service region select
body: <p><strong>What we have:</strong></p>
  
  <ul>
  <li>3 stateful backend servers located in different regions.</li>
  <li>Mqtt broker in each region (with IoT-devices connected).</li>
  <li>Users that related to specific region, to able to see they IoT data.</li>
  <li>Unique host name for each server.</li>
  </ul>
  
  <p><strong>What we want:</strong></p>
  
  <ul>
  <li>One host name to serve all users</li>
  <li>Mqtt can still connected to each backend by i'ts unique host name</li>
  <li>The decision where to redirect should come from the user information and not from the IP (for example field in JWT)</li>
  </ul>
  
  <p>Did the GCP HTTP(S) load balancing is capable to do such think, or there is a technical limitation?</p>
  
  <p>Any ideas will be much appreciated!</p>