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Fix for issue #4960 PM2 cluster mode ECONNREFUSED errors #4961

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Fix for issue #4960 PM2 cluster mode ECONNREFUSED errors #4961

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5e7a2de
Fix PM2 cluster mode ECONNREFUSED errors
bram-atmire Dec 28, 2025
24c96de
Fix ESLint errors in main.server.ts
bram-atmire Dec 29, 2025
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11 changes: 11 additions & 0 deletions src/main.server.ts
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Original file line number Diff line number Diff line change
@@ -1,3 +1,9 @@
/**
* Fix for Node.js 17+ where DNS resolution prefers IPv6 over IPv4.
* This causes "ECONNREFUSED ::1:8080" errors in PM2 cluster mode when
* the backend only listens on IPv4.
* See: https://github.com/nodejs/node/issues/40537
*/
import 'core-js/es/reflect';
import 'zone.js';
import 'reflect-metadata';
Expand All @@ -7,6 +13,8 @@ import 'reflect-metadata';
*/
import '@angular/localize/init';

import { setDefaultResultOrder } from 'node:dns';

import {
bootstrapApplication,
BootstrapContext,
Expand All @@ -15,6 +23,9 @@ import {
import { AppComponent } from './app/app.component';
import { serverAppConfig } from './modules/app/server-app.config';

// Apply DNS resolution order fix for Node.js 17+
setDefaultResultOrder('ipv4first');

const bootstrap = (context: BootstrapContext) => bootstrapApplication(AppComponent, serverAppConfig, context);

export default bootstrap;
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