A fix for GitHub issue #865

[lasztoth]

Description

This PR fixes the issue #865. Specifically, it appears that the bug was introduced (perhaps by accident) by commenting out lines 288-289 from responseloader.py. It appears that uncommenting these lines, i.e., returning from the method if there is already a WARC filename and offset for the record, then the self-redirects work correctly. These lines were commented between versions 2.6.9 and 2.7.0b, which corresponds to the issue description. After this bug fix, self-redirects work correctly once again (on a local test system).

Motivation and Context

Solves #865.

Types of changes

• Replay fix (fixes a replay specific issue)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added or updated tests to cover my changes.
• All new and existing tests passed.

[tw4l]

I have a vague memory now of this being commented out in relation to the development of the Vue banner UI, but for the life of me can't remember why. Will try to dig back through my notes from that time!

[tw4l]

Ah, I dug back through our internal Discord conversations and remember now! This was our hacky temporary solution at the time to get pywb to populate the calendar from a remote CDX server of form cdx+https://example.com/webarchive/cdx in pywb 2.6.8, as without these lines commented out we'd receive No such file or directory errors because the actual archive files weren't available locally. It likely got committed as part of the Vue banner work by accident, as the PR we ended up merging at the time for what was very large.

Edit: It seems this is still true in latest main, if you want to load an archive from a remote CDX source and actually be able to view the content, it's still necessary to comment out these lines. But there should be a better fix possible here.

[lasztoth]

Thanks a lot @tw4l for taking a look at this!

[obrienben]

@tw4l are you looking into a fix that addresses the calendar issue you mentioned and 865?

[tw4l]

Hi @lasztoth and @obrienben, I'm having some health issues that have limited my capacity at the moment. I'll be out of the office next week but will try to prioritize this when I return.