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resolve4 - dns - Node documentation
function resolve4

Usage in Deno

import { resolve4 } from "node:dns";
resolve4(
hostname: string,
callback: (
err: ErrnoException | null,
addresses: string[],
) => void,
): void
<div class="alert alert-warning"><div><svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <path stroke="none" d="M0 0h24v24H0z" fill="none" /> <path d="M12 9v4" /> <path d="M10.363 3.591l-8.106 13.534a1.914 1.914 0 0 0 1.636 2.871h16.214a1.914 1.914 0 0 0 1.636 -2.87l-8.106 -13.536a1.914 1.914 0 0 0 -3.274 0z" /> <path d="M12 16h.01" /> </svg> Deno compatibility</div><div><p> The <code>ttl</code> option is not supported.</p> </div></div>

Uses the DNS protocol to resolve a IPv4 addresses (A records) for the hostname. The addresses argument passed to the callback function will contain an array of IPv4 addresses (e.g.['74.125.79.104', '74.125.79.105', '74.125.79.106']).

Parameters

hostname: string

Host name to resolve.

callback: (
err: ErrnoException | null,
addresses: string[],
) => void

Return Type

void
resolve4(
hostname: string,
callback: (
err: ErrnoException | null,
addresses: RecordWithTtl[],
) => void,
): void
<div class="alert alert-warning"><div><svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <path stroke="none" d="M0 0h24v24H0z" fill="none" /> <path d="M12 9v4" /> <path d="M10.363 3.591l-8.106 13.534a1.914 1.914 0 0 0 1.636 2.871h16.214a1.914 1.914 0 0 0 1.636 -2.87l-8.106 -13.536a1.914 1.914 0 0 0 -3.274 0z" /> <path d="M12 16h.01" /> </svg> Deno compatibility</div><div><p> The <code>ttl</code> option is not supported.</p> </div></div>

Parameters

hostname: string
callback: (
err: ErrnoException | null,
addresses: RecordWithTtl[],
) => void

Return Type

void
resolve4(
hostname: string,
options: ResolveOptions,
callback: (
err: ErrnoException | null,
addresses: string[] | RecordWithTtl[],
) => void,
): void
<div class="alert alert-warning"><div><svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"> <path stroke="none" d="M0 0h24v24H0z" fill="none" /> <path d="M12 9v4" /> <path d="M10.363 3.591l-8.106 13.534a1.914 1.914 0 0 0 1.636 2.871h16.214a1.914 1.914 0 0 0 1.636 -2.87l-8.106 -13.536a1.914 1.914 0 0 0 -3.274 0z" /> <path d="M12 16h.01" /> </svg> Deno compatibility</div><div><p> The <code>ttl</code> option is not supported.</p> </div></div>

Parameters

hostname: string
options: ResolveOptions
callback: (
err: ErrnoException | null,
addresses: string[] | RecordWithTtl[],
) => void

Return Type

void