Wget2 regression: can't download from QT's develop sources

[HinTak]

This can be reproduced locally, and also via github's CI (with github's fedora 40 container)

Somehow wget2 get confused by this url: https://download.qt.io/development_releases/qt/6.8/6.8.0-beta1/src/submodules/qtwebengine-everywhere-src-6.8.0-beta1.tar.xz

And download is broken.

Wget 1 works fine.

[HinTak]

The CI problem is seen with https://github.com/HinTak/Qt6WE-OT-SVG/commit/003c2c51d95c725ed11c7b307e8462b418f3719d

Then I replaced wget2 with curl https://github.com/HinTak/Qt6WE-OT-SVG/commit/46d9de06b33d09c2cb35a9abd1d8e54058cc0c9f .

[rockdaboot]

The Metalink protocol is offered by the web server and Wget2 selects it for downloading (it allows automatic content verification and recovering/resuming). The downside is that it takes longer as each download is split into (many) parts.

Here it fails at around part 413 with

wget2: nghttp2_session.c:2665: session_prep_frame: Assertion `0' failed.

A workaround (until this is fixed) is using --no-metalink.

TBH, I thought Metalink is mostly dead. Seeing it being supported is great.

[rockdaboot]

This issue is fixed by ec27488feadd44b5e126592bc18ff2441f8cae5a.

The Metalink chunked download is still triggered, but will work in combination with HTTP/2 now. It still takes longer than using --no-metalink, the upside is that you have an automatic content verification via checksumming the downloaded file(s).

What we want to have in the future is a fast download plus an automatic checksum verification.