Add Ipv6Addr::is_ipv4_mapped
#86490
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Add Ipv6Addr::is_ipv4_mapped
#86490
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r? @kennytm (rust-highfive has picked a reviewer for you, use r? to override) |
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CDirkx
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Jun 20, 2021
| | multicast_admin_local | ||
| | multicast_global | ||
| | multicast_link_local | ||
| | multicast_realm_local | ||
| | multicast_site_local | ||
| | multicast_organization_local; | ||
| let ipv4_mapped = 1 << 17; |
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I assigned ipv4_mapped to 1 << 17, as I already assigned 1 << 16 to benchmarking in the related PR #86434. (the actual values don't really matter, only that they are distinct)
CDirkx
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Jun 20, 2021
| check!( | ||
| "::ffff:127.0.0.1", | ||
| &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0x7f, 0, 0, 1], | ||
| global | unicast_global | ipv4_mapped |
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According to the IANA IPv6 Special Address Registry IPv4-mapped addresses are not globally reachable. However due to the current simplistic implementation of Ipv6Addr::is_global compared to Ipv4Addr::is_global, Rust currently considers these addresses global. I plan to address this in a future PR reworking is_global.
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The rework of Ipv6Addr::is_global has been submitted (#86634).
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☔ The latest upstream changes (presumably #86335) made this pull request unmergeable. Please resolve the merge conflicts. |
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ping from triage: |
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jstasiak
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Dec 18, 2023
This change consists of cherry-picking the content from the original PR[1], which got closed due to inactivity, and applying the following changes: * Resolving merge conflicts (obviously) * Linked to to_ipv4_mapped instead of to_ipv4 in the documentation (seems more appropriate) * Added the must_use and rustc_const_unstable attributes the original didn't have I think it's a reasonably useful method. [1] rust-lang#86490
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Add Ipv6Addr::is_ipv4_mapped This change consists of cherry-picking the content from the original PR[1], which got closed due to inactivity, and applying the following changes: * Resolving merge conflicts (obviously) * Linked to to_ipv4_mapped instead of to_ipv4 in the documentation (seems more appropriate) * Added the must_use and rustc_const_unstable attributes the original didn't have I think it's a reasonably useful method to have. [1] rust-lang#86490
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Jan 21, 2024
Rollup merge of rust-lang#119081 - jstasiak:is-ipv4-mapped, r=dtolnay Add Ipv6Addr::is_ipv4_mapped This change consists of cherry-picking the content from the original PR[1], which got closed due to inactivity, and applying the following changes: * Resolving merge conflicts (obviously) * Linked to to_ipv4_mapped instead of to_ipv4 in the documentation (seems more appropriate) * Added the must_use and rustc_const_unstable attributes the original didn't have I think it's a reasonably useful method to have. [1] rust-lang#86490
lnicola
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Apr 7, 2024
Add Ipv6Addr::is_ipv4_mapped This change consists of cherry-picking the content from the original PR[1], which got closed due to inactivity, and applying the following changes: * Resolving merge conflicts (obviously) * Linked to to_ipv4_mapped instead of to_ipv4 in the documentation (seems more appropriate) * Added the must_use and rustc_const_unstable attributes the original didn't have I think it's a reasonably useful method to have. [1] rust-lang/rust#86490
RalfJung
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Apr 27, 2024
Add Ipv6Addr::is_ipv4_mapped This change consists of cherry-picking the content from the original PR[1], which got closed due to inactivity, and applying the following changes: * Resolving merge conflicts (obviously) * Linked to to_ipv4_mapped instead of to_ipv4 in the documentation (seems more appropriate) * Added the must_use and rustc_const_unstable attributes the original didn't have I think it's a reasonably useful method to have. [1] rust-lang/rust#86490
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This PR adds the unstable method
Ipv6Addr::is_ipv4_mapped, as I proposed a while ago #76098 (comment). It allows for making decisions based on if an address is IPv4-mapped (see also the IPv4-in-IPv6 Address Support issue #85609). I also intend to use this method in a future rework ofIpv6Addr::is_global(edit: #86634) to more accurately follow the IANA Special Address Registry (like is done inIpv4Addr::is_global).