The name returned by get_upstreams is sometimes with a port, sometimes without.

Hello

I use the function get_upstreams to output all the named upstream groups.
I found a strange situation.
In our online environment, most of the displayed upstream names have port 80, and a few do not have port 80.

I would like to know why this is the case and how to remove the port.

nginx version: openresty/1.11.2.2

upstream test1-pool:80:
    1   addr = 10.18.75.163:1189, weight = 1, fail_timeout = 10, name = 10.18.75.163:11889, max_fails = 1
    2   addr = 10.18.96.47:1189, weight = 1, fail_timeout = 10, backup = true, name = 10.18.96.47:11889, max_fails = 1
	
	
upstream test2-pool:
    1   addr = 10.18.38.32:8080, weight = 1, fail_timeout = 10, backup = true, name = 10.18.38.32:8080, max_fails = 1
    2   addr = 10.16.77.94:8080, weight = 1, fail_timeout = 10, name = 10.16.77.94:8080, max_fails = 1

But in my test environment, there is no port with upstream name
nginx version: openresty/1.11.2.2

Start by tracing the get_upstreams API and comparing its returned upstream names with the two configurations and environments described in the issue. Check how upstream names and ports are obtained or normalized in the module. Done means identifying the cause and documenting or correcting the behavior so port handling is consistent.