class promises.Resolver
Usage in Deno
```typescript import { promises } from "node:node__dns.d.ts"; ```An independent resolver for DNS requests.
Creating a new resolver uses the default server settings. Setting
the servers used for a resolver using [`resolver.setServers()`](https://nodejs.org/docs/latest-v20.x/api/dns.html#dnspromisessetserversservers) does not affect
other resolvers:
```js
import { promises } from 'node:dns';
const resolver = new promises.Resolver();
resolver.setServers(['4.4.4.4']);
// This request will use the server at 4.4.4.4, independent of global settings.
resolver.resolve4('example.org').then((addresses) => {
// ...
});
// Alternatively, the same code can be written using async-await style.
(async function() {
const addresses = await resolver.resolve4('example.org');
})();
```
The following methods from the `dnsPromises` API are available:
* `resolver.getServers()`
* `resolver.resolve()`
* `resolver.resolve4()`
* `resolver.resolve6()`
* `resolver.resolveAny()`
* `resolver.resolveCaa()`
* `resolver.resolveCname()`
* `resolver.resolveMx()`
* `resolver.resolveNaptr()`
* `resolver.resolveNs()`
* `resolver.resolvePtr()`
* `resolver.resolveSoa()`
* `resolver.resolveSrv()`
* `resolver.resolveTxt()`
* `resolver.reverse()`
* `resolver.setServers()`
new
Resolver(options?: ResolverOptions)
cancel(): void
Cancel all outstanding DNS queries made by this resolver. The corresponding
callbacks will be called with an error with code `ECANCELLED`.
setLocalAddress(ipv4?: string,ipv6?: string,): void
The resolver instance will send its requests from the specified IP address.
This allows programs to specify outbound interfaces when used on multi-homed
systems.
If a v4 or v6 address is not specified, it is set to the default and the
operating system will choose a local address automatically.
The resolver will use the v4 local address when making requests to IPv4 DNS
servers, and the v6 local address when making requests to IPv6 DNS servers.
The `rrtype` of resolution requests has no impact on the local address used.