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Michael NovotnyandGitHub fe797c1074 Updates Mozilla links to not include language preference (#55326)
Internal suggestion to remove `en-US` from Mozilla urls since MDN is
available in multiple languages nowadays it will automatically redirect
to the viewer’s language preference.

Closes
[DX-2076](https://linear.app/vercel/issue/DX-2076/make-external-mozilla-links-language-agnostic-in-nextjs-docs)
2023-09-13 11:06:29 -05:00

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---
title: httpAgentOptions
description: Next.js will automatically use HTTP Keep-Alive by default. Learn more about how to disable HTTP Keep-Alive here.
---
{/* The content of this doc is shared between the app and pages router. You can use the `<PagesOnly>Content</PagesOnly>` component to add content that is specific to the Pages Router. Any shared content should not be wrapped in a component. */}
In Node.js versions prior to 18, Next.js automatically polyfills `fetch()` with [undici](/docs/architecture/supported-browsers#polyfills) and enables [HTTP Keep-Alive](https://developer.mozilla.org/docs/Web/HTTP/Headers/Keep-Alive) by default.
To disable HTTP Keep-Alive for all `fetch()` calls on the server-side, open `next.config.js` and add the `httpAgentOptions` config:
```js filename="next.config.js"
module.exports = {
httpAgentOptions: {
keepAlive: false,
},
}
```