function lookupService
Usage in Deno
import { lookupService } from "node:dns";
lookupService(address: string,port: number,callback: (err: ErrnoException | null,hostname: string,service: string,) => void,): void
Resolves the given address and port into a host name and service using
the operating system's underlying getnameinfo implementation.
If address is not a valid IP address, a TypeError will be thrown.
The port will be coerced to a number. If it is not a legal port, a TypeError will be thrown.
On an error, err is an Error object,
where err.code is the error code.
import dns from 'node:dns';
dns.lookupService('127.0.0.1', 22, (err, hostname, service) => {
console.log(hostname, service);
// Prints: localhost ssh
});
If this method is invoked as its util.promisify() ed
version, it returns a Promise for an Object with hostname and service properties.
void