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Fix this issue follow these two points: 1. Keep track of how many queries are currently open. If `setServers()` is called while there are open queries, error out. 2. For `Resolver` instances, use option 1. For dns.setServers(), just create a fresh new default channel every time it is called, and then set its servers list. Fixes: https://github.com/nodejs/node/issues/14734 PR-URL: https://github.com/nodejs/node/pull/14891 Backport-PR-URL: https://github.com/nodejs/node/pull/17778 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Tobias Nießen <tniessen@tnie.de>
31 lines
561 B
JavaScript
31 lines
561 B
JavaScript
'use strict';
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const common = require('../common');
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const dns = require('dns');
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const goog = [
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'8.8.8.8',
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'8.8.4.4',
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];
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{
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// Fix https://github.com/nodejs/node/issues/14734
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{
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const resolver = new dns.Resolver();
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resolver.resolve('localhost', common.mustCall());
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common.expectsError(resolver.setServers.bind(resolver, goog), {
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message: /^c-ares failed to set servers: "There are pending queries\." \[.+\]$/g
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});
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}
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{
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dns.resolve('localhost', common.mustCall());
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// should not throw
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dns.setServers(goog);
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}
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}
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