Add port public getter in HTTPServer

[kovalevm]

If I don't want to configurate port for metrics I can pass '0' and it means use random avalible port, it's very useful but how I can know which port was used?

[brian-brazil]

Can you explain your setup where this comes up? How is Prometheus discovering this port?

[kovalevm]

@brian-brazil I use it like this:
HTTPServer server = new HTTPServer(0);

After that line my app create web server on localhost:%random avalible port%. It's simple.
But after that I want to register this server in a service discovery (Consul in my case), after successful registration prometheus sees new service and automatically extracts metrics.
But It doesn't work if I don't know the port.

[brian-brazil]

That makes sense. Thanks!