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d8797f5994
Allow the `--dns-result-order` option to change the default value of verbatim in `dns.lookup()`. This is useful when running Node.js in ipv6-only environments to avoid possible ENETUNREACH errors. PR-URL: https://github.com/nodejs/node/pull/38099 Refs: https://github.com/nodejs/node/issues/31566 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
// Flags: --expose-internals --dns-result-order=ipv4first
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { internalBinding } = require('internal/test/binding');
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const cares = internalBinding('cares_wrap');
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const { promisify } = require('util');
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// Test that --dns-result-order=ipv4first works as expected.
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const originalGetaddrinfo = cares.getaddrinfo;
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const calls = [];
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cares.getaddrinfo = common.mustCallAtLeast((...args) => {
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calls.push(args);
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originalGetaddrinfo(...args);
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}, 1);
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const dns = require('dns');
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const dnsPromises = dns.promises;
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let verbatim;
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// We want to test the parameter of verbatim only so that we
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// ignore possible errors here.
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function allowFailed(fn) {
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return fn.catch((_err) => {
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//
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});
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}
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(async () => {
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let callsLength = 0;
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const checkParameter = (expected) => {
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assert.strictEqual(calls.length, callsLength + 1);
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verbatim = calls[callsLength][4];
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assert.strictEqual(verbatim, expected);
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callsLength += 1;
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};
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await allowFailed(promisify(dns.lookup)('example.org'));
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checkParameter(false);
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await allowFailed(dnsPromises.lookup('example.org'));
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checkParameter(false);
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await allowFailed(promisify(dns.lookup)('example.org', {}));
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checkParameter(false);
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await allowFailed(dnsPromises.lookup('example.org', {}));
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checkParameter(false);
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})().then(common.mustCall());
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