ureq's defaults followed up to 10 redirects, including from https to plain
http, and forwarded the custom HttpOptions::headers (X-Api-Key, Cookie,
...) to whatever host a redirect named — only Authorization was stripped.
HttpStorage now follows redirects itself (ureq's max_redirects is 0):
- at most HttpOptions::max_redirects per request (default 5; 0 refuses
any redirect), then RemoteError::Redirect;
- never from https to another scheme, nor to a non-http(s) URL;
- once a redirect leaves the URL's origin (scheme, host, port), none of
the custom headers is sent any more (Authorization included);
- each hop counts as a request; errors show the target redacted.
Tests: a redirect to another local port reads the right data and the
target never sees X-Api-Key or Authorization (it did before); a
same-origin redirect keeps them; a loop stops after 6 requests; 0 refuses;
unit tests for target resolution, the https downgrade and origins.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>