Server action does not return a response if uncaught exception is thrown due to body size limit

[wolflu05]

Summary

Hi, I have created an image upload using server actions. My server action looks like this:

"use server";

import { writeFile } from "node:fs/promises";

export const uploadImage = async (file: File) => {
  const buffer = Buffer.from(await file.arrayBuffer());
  await writeFile(`/tmp/${file.name}`, buffer);
  return { error: false };
}

In next.config.ts I have adjusted the bodySizeLimit:

const nextConfig: NextConfig = {
  /* config options here */
  output: "standalone",
  experimental: {
    serverActions: {
      bodySizeLimit: "5mb",
    },
  },

Now I can upload files until 5mb. But if I upload files that exceed that limit, I get the following error in the console:

[Error: Body exceeded 5MB limit.
                To configure the body size limit for Server Actions, see: https://nextjs.org/docs/app/api-reference/next-config-js/serverActions#bodysizelimit] {
  statusCode: 413
}

However the request on the client never gets the response status code 413. How can I return an response from nextjs to catch that error on the client and show a proper error message to the user? From #74766 I already found out, that I cannot catch this error on the server, because that checking is done before my server action function executes. But shouldnt nextjs return this status code also to the user instead of keeping that connection open?

Same occours when I try to upload the file via an external API client (like postman). The request never gets an response...

Additional information

No response

Example

No response

[icyJoseph]

I previously gave some answer on this matter here: #74766 ~ I think it is still problematic as of today