52 lines
1.5 KiB
TypeScript
52 lines
1.5 KiB
TypeScript
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// Copyright 2013 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { Agent } from 'https';
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import type { AgentOptions } from 'https';
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import { SECOND } from './durations';
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import { electronLookup } from './dns';
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// Due to the Node.js bug, we must manually re-apply `servername` when creating
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// an outgoing TLS connection with "Happy Eyeballs" (`autoSelectFamily: true`).
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//
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// See: https://github.com/nodejs/node/pull/48255
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export function createHTTPSAgent(options: AgentOptions = {}): Agent {
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type TLSSocketInternals = {
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_init: (...args: Array<unknown>) => unknown;
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setServername: (servername: string) => void;
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};
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const agent = new Agent({
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...options,
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lookup: electronLookup,
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autoSelectFamily: true,
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autoSelectFamilyAttemptTimeout: 2 * SECOND,
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});
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const typedAgent = agent as unknown as {
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createConnection: (
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connectionOptions: { servername?: string },
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callback: () => unknown
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) => TLSSocketInternals;
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};
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const oldCreateConnection = typedAgent.createConnection;
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typedAgent.createConnection = function createConnection(
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connectionOptions,
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callback
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) {
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const socket = oldCreateConnection.call(this, connectionOptions, callback);
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const oldInit = socket._init;
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socket._init = function _init(...args) {
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const result = oldInit.apply(this, args);
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if (connectionOptions.servername) {
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socket.setServername(connectionOptions.servername);
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}
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return result;
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};
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return socket;
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};
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return agent;
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}
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