code: public static Tag clientName(HttpRequest request) {
  		String host = request.getURI().getHost();
  		if (host == null) {
  			host = "none";
  		}
  		return Tag.of("clientName", host);
  	}
docs: Create a {@code clientName} {@code Tag} derived from the {@link URI#getHost host}
  of the {@link HttpRequest#getURI() URI} of the given {@code request}.
  @param request the request
  @return the clientName tag