Merge pull request lileio#53 from echo-health/master

Split SERVICE_HOST_OVERRIDE into host and port as separate vars

lile.go

@@ -113,8 +113,15 @@ func AddStreamInterceptor(sint grpc.StreamServerInterceptor) {
 // URLForService returns a service URL via a registry or a simple DNS name
 // if not available via the registry
 func URLForService(name string) string {
-	if os.Getenv("SERVICE_HOST_OVERRIDE") != "" {
-		return os.Getenv("SERVICE_HOST_OVERRIDE")
+
+	host := name
+	port := "80"
+
+	if val, ok := os.LookupEnv("SERVICE_HOST_OVERRIDE"); ok {
+		host = val
+	}
+	if val, ok := os.LookupEnv("SERVICE_PORT_OVERRIDE"); ok {
+		port = val
 	}
 
 	if service.Registry != nil {
@@ -125,7 +132,8 @@ func URLForService(name string) string {
 		return url
 	}
 
-	return name + ":80"
+	return fmt.Sprintf("%s:%s", host, port)
+
 }
 
 // ContextClientInterceptor passes around headers for tracing and linkerd