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changedetection.io/changedetectionio
dgtlmoonandClaude Opus 5 bb729894bc Browser fetchers - Report the real status code when Chrome aborts a bodiless error response
Chrome 153+ refuses to commit a navigation when a 4xx/5xx arrives with a zero-length body:
page.goto() raises net::ERR_HTTP_RESPONSE_CODE_FAILURE instead of returning the response. The
response is received fine, we just never get it as a return value, so the raw net:: string
landed in last_error instead of "Error - 404".

Verified against two browser images, same HTTP server:

  Chrome 153    empty-body 404 -> raises ERR_HTTP_RESPONSE_CODE_FAILURE
  Chrome 153    404 with body  -> status=404
  Chromium 119  empty-body 404 -> status=404
  Chromium 119  404 with body  -> status=404

The fix keeps the main-frame response from the 'response' event and hands that back when goto
raises, so .status / .all_headers() and the existing non-200 branch (which also captures the
screenshot) work unchanged. The latest matching response wins, so a redirect chain still
reports its final hop. Any other error re-raises as before, and if no response was captured we
re-raise too - the status is never invented, which keeps older browsers on exactly their old
path.

Two independent navigation sites needed it:

 - browser_steps.py action_goto_url - covers the playwright fetcher, the live Browser Steps UI,
   the Goto URL / Goto site steps, and the CloakBrowser plugin which imports it. This is the one
   that broke CI: content_fetchers/__init__.py forces playwright when a watch has browser steps,
   so test_non_200_errors_report_browsersteps ran the playwright path in the pyppeteer jobs too.

 - puppeteer.py - its own goto retry loop, used when FAST_PUPPETEER_CHROME_FETCHER is set and the
   watch has no browser steps. No test covers that path; verified by driving the fetcher directly.

Note pyppeteer exposes isNavigationRequest / frame / mainFrame as properties where playwright
uses is_navigation_request() as a method. Mixing them up raises 'bool' object is not callable,
which gets swallowed as a renderer page error rather than failing loudly. Checked against the
pinned pyppeteer-ng==2.0.0rc16.

Selenium is unaffected - it hardcodes status_code = 200 because WebDriver cannot see the HTTP
status, so it never reaches the non-200 branch.

Tested with the full CI browser set (test_content, test_errorhandling, test_fetch_data,
test_custom_js_before_content): 10 passed on each of Chrome 153 + playwright, Chrome 153 +
pyppeteer, Chromium 119 + playwright, Chromium 119 + pyppeteer, the last two against a canonical
Dockerfile.chromium119 build so Chromium is the only variable.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-12 10:49:11 +02:00
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2026-09-10 07:04:49 +02:00
2026-09-10 07:04:49 +02:00