Prerender NavigationBadHttpStatus Reproducer

#40926909 CL 7620165 In Review

About

What this tests

This page exercises the DevTools display of HTTP status codes for prefetch and prerender speculation rules that fail with non-2xx responses (NavigationBadHttpStatus).

Open DevTools > Application > Speculative loads to see the status code (e.g. 404) in the failure reason string.

How to reproduce

Steps

1. Open this page with DevTools open

2. Go to Application > Speculative loads > Speculations tab

3. Observe the prefetch and prerender attempts below

4. The failure reason should show the HTTP status code (e.g. 404, 500)

Prefetch targets

404 page-404.html prefetch + prerender target 404* page-500.html does not exist -- returns 404 from static server 200 page-200.html control (should succeed)

Speculation rules status

Checking browser support...

Speculation rules source

{
  "prefetch": [
    {
      "source": "list",
      "urls": ["page-404.html", "page-500.html", "page-200.html"]
    }
  ],
  "prerender": [
    {
      "source": "list",
      "urls": ["page-404.html", "page-500.html", "page-200.html"]
    }
  ]
}

Reference

Based on prerender-demos.glitch.me/prefetch.html