Fully-qualified urls in HTTP Location header. Why it is important?

问题

So I've got some warnings from Fiddler that I have bad urls in HTTP Location header and they are should be fully-qualified. Why it's so important and what issues that can lead to?

回答1:

The old standard for HTTP/1.1 (RFC 2616 § 14.30) required that Location be an absolute URI.

Implementation experience showed that this was not important, and many implementations allowed relative URIs in Location, so the current standard (RFC 7231 § 7.1.2) allows relative URIs.

来源：https://stackoverflow.com/questions/37412756/fully-qualified-urls-in-http-location-header-why-it-is-important