Function createLookupServicePromise

lib/internal/dns/promises.js:254–279

(hostname, port)

}

function createLookupServicePromise(hostname, port) {
  return new Promise((resolve, reject) => {
    const req = new GetNameInfoReqWrap();

    req.hostname = hostname;
    req.port = port;
    req.oncomplete = onlookupservice;
    req.resolve = resolve;
    req.reject = reject;

    const err = getnameinfo(req, hostname, port);

    if (err)
      reject(new DNSException(err, 'getnameinfo', hostname));
    else if (hasObserver('dns')) {
      startPerf(req, kPerfHooksDnsLookupServiceContext, {
        type: 'dns',
        name: 'lookupService',
        detail: {
          host: hostname,
          port,
        },
      });
    }
  });
}

function lookupService(address, port) {
  if (arguments.length !== 2)