[url-downloader] Force HTTP/1 for QNetworkRequest#5044
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To see if QT's happy eyeball impl. would work for HTTP/1. Closes: #3662 Signed-off-by: Mustafa Kemal Gilor <mustafa.gilor@canonical.com>
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Pull request overview
This PR disables HTTP/2 for the URL downloader’s QNetworkRequests so that downloads and header probes are forced onto HTTP/1.x, to evaluate whether Qt’s “happy eyeballs” behavior works better for the reported connectivity failures (issue #3662).
Changes:
- Disable HTTP/2 in the main GET download path by setting
QNetworkRequest::Http2AllowedAttributetofalse. - Disable HTTP/2 in the HEAD request path used for retrieving headers (e.g.,
Last-Modified).
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To see if QT's happy eyeball impl. would work for HTTP/1.
Closes: #3662