fetch a long base64 url will crash and nothing happens

[ahaoboy]

Version

v18.6.0

Platform

Darwin C02G87AYMD6R 21.5.0 Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:22 PDT 2022; root:xnu-8020.121.3~4/RELEASE_X86_64 x86_64

Subsystem

macos

What steps will reproduce the bug?

node test.js

async function test(n) {
  const s = "a".repeat(n);
  const base64 = Buffer.from(s).toString("base64");
  const dataURIPrefix = "data:application/octet-stream;base64,";
  const url = dataURIPrefix + base64;
  const resp = await fetch(url);
  const buf = await resp.arrayBuffer();
  const str = Buffer.from(buf).toString("ascii");
  console.log(str === s);
}

test(1 << 10); // true
test(1 << 20); // nothing happens
test(1 << 15); // true

How often does it reproduce? Is there a required condition?

always reproduce

What is the expected behavior?

expect log true always or throw error

What do you see instead?

when url is long enough, fetch is crash and nothing happen

Additional information

No response

[targos]

@nodejs/undici ?

[mcollina]

Moved to the undici repo.

[mcollina]

Thanks for reporting! Would you like to send a Pull Request to address this issue? Remember to add unit tests.

[ahaoboy]

@mcollina
#1575