Viewer does not see the video stream if connected from different network

[ddobric]

The application works well as long the broadcaster and viewers belong to the same network segment.
For example, if the broadcaster starts to join the service hosted at https://broadcastservice.azurewebsites.net from the machine1, all viewers connected from the same machine or some other matching within the same network segment will be able to see the video stream.
However, if the viewer is connected from some, let's say, another city (different network segment), the video will not be streamed.

My expectation is that the video is relayed and not streamed via P2P.