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Use libcurl with Happy Eyeballs (RFC 6555, 8305) #1891

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dxdxdt opened this issue Nov 23, 2024 · 0 comments
Open

Use libcurl with Happy Eyeballs (RFC 6555, 8305) #1891

dxdxdt opened this issue Nov 23, 2024 · 0 comments

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dxdxdt commented Nov 23, 2024 •
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Some poorly designed cloud service platforms(CSP) push default IPv4 route to the IPv6-only VM. This causes long pauses when a v4 only mirror is selected whilst downloading packages. If dnf is run in the region where dual-stacked mirrors are scarce, the pauses can happen many times.

RFC 6555, 8305 recommends doing what's called "happy eyeballs" to cull connectivity(v4 or v6) with broken route paths. All modern browsers are immune to the problem since they all implement it. Happy eyeballs is implemented in curl, but dnf doesn't seem to enable the option.
@dxdxdt dxdxdt changed the title Use libcurl with Happy Eyeballs () Use libcurl with Happy Eyeballs (RFC 6555, 8305) Nov 23, 2024
@dxdxdt dxdxdt mentioned this issue Nov 23, 2024
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