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Overview of the Issue

In testing using unix sockets for connect envoy and consul I have come across that entering a unix socket for https results in a http socket instead.

Reproduction Steps

Steps to reproduce this issue, eg:

1. Create a consul config supplying all the TLS goodies and add the https address section pointing to a unix socket. In my case I am using the consul docker container 1.14.4

    "addresses": {
        "grpc_tls" : "unix://consul/consul_grpc.sock",
        "http" : "unix://consul/consul_http.sock",
        "https" : "unix://consul/consul_https.sock"
    },

2. Configure consul connect to connect to the socket using environment vars

      - CONSUL_HTTP_ADDR=unix://consul/consul_https.sock
      - CONSUL_HTTP_SSL=true

3. View error
   us-consul-gateway | Error registering service "gateway-us": Put "https://consul%2Fconsul_https.sock/v1/agent/service/register": http: server gave HTTP response to HTTPS client

Consul info for both Client and Server

# consul info
agent:
	check_monitors = 0
	check_ttls = 0
	checks = 1
	services = 1
build:
	prerelease =
	revision = dae670fe
	version = 1.14.4
	version_metadata =
consul:
	acl = enabled
	known_servers = 1
	server = false
runtime:
	arch = arm64
	cpu_count = 2
	goroutines = 98
	max_procs = 2
	os = linux
	version = go1.19.4
serf_lan:
	coordinate_resets = 0
	encrypted = true
	event_queue = 0
	event_time = 2
	failed = 0
	health_score = 0
	intent_queue = 0
	left = 0
	member_time = 25
	members = 2
	query_queue = 0
	query_time = 1

Operating system and Environment details

Mac OS using docker