[MJAVADOC-533] <link> entries that point to a resource that requires an Accept header may be ignored

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.1
• Fix Version/s: 3.1.0
• Assignee: Guillaume Boué
• Reporter: Andy Wilkinson
• Created: 09/Aug/18 16:18
• Updated: 09/Aug/18 20:38
• Resolved: 09/Aug/18 20:38

Description

This is a regression caused by the changes made to fix MJAVADOC-427.

The HTTP client configuration that's used to get the redirect URLs does not include an Accept header in the requests that it makes. This can result in a 403 response for some javadoc, such as Spring Framework's which is fronted by Cloudflare. The lack of Accept header will sometimes cause Cloudflare to respond with a 403 containing a Captcha.

I'm a member of the Spring Framework team and have asked our sysadmin to look at tweaking Cloudflare's rules, but I thought it worth reporting the problem here as others may be affected and may not be in a position to change the server's configuration.