v = AppendValidation(v, fmt.Errorf("port names in servers must be unique: duplicate name %s", s.Port.Name))
				}
				portNames[s.Port.Name] = true
				if !protocol.Parse(s.Port.Protocol).IsHTTP() && s.GetTls().GetHttpsRedirect() {
					v = AppendValidation(v, WrapWarning(fmt.Errorf("tls.httpsRedirect should only be used with http servers")))
				}
			}
		}

		return v.Unwrap()
	})