function isAddressv4Loopback
isAddressv4Loopback(address: number): boolean

Checks if an IPv4 address is a loopback address (RFC 1122).

Loopback range: 127.0.0.0/8 (127.0.0.0 – 127.255.255.255)

Examples

Example 1

import { assert, assertEquals } from "@std/assert";
import { isAddressv4Loopback } from "@hertzg/ip/classifyv4";
import { parseAddressv4 } from "@hertzg/ip/addressv4";

assert(isAddressv4Loopback(parseAddressv4("127.0.0.1").address));
assert(isAddressv4Loopback(parseAddressv4("127.255.255.255").address));
assertEquals(isAddressv4Loopback(parseAddressv4("128.0.0.1").address), false);

Parameters

address: number

The address as a 32-bit unsigned integer

Return Type

boolean

true if the address is a loopback address

Usage

import { isAddressv4Loopback } from "classifyv4.ts";