c-ares-1.24.0

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

c-ares version 1.24.0

This is a feature and bugfix release.

Features:

• Add support for IPv6 link-local DNS servers. Nameserver formats can now accept the %iface suffix, and a new ares_get_servers_csv() function was added to return servers that can contain the link-local interface name.

Changes:

• Unbundle GoogleTest for test cases. Package maintainers will now need to require GoogleTest (GMock) as a build dependency if building tests. New GoogleTest versions require C++14 or later.
• Replace nameserver parsing code to use new memory-safe functions.
• Replace the sortlist parser with new memory-safe functions.
• Various warning fixes and dead code removal.

Bug Fixes:

• Old Linux versions require POSIX_C_SOURCE or _GNU_SOURCE to compile with thread safety support.
• A non-responsive DNS server that caused timeouts wouldn't increment the failure count, this would lead to other servers not being tried. Regression introduced in 1.22.0.
• Some projects that depend on c-ares expect invalid parameter option values passed into ares_init_options() to simply be ignored. This behavior has been restored.
• On linux getrandom() can fail if the kernel doesn't support the syscall, fall back to another random source.
• ares_cancel() when performing ares_gethostbyname() or ares_getaddrinfo() with AF_UNSPEC, if called after one address class was returned but before the other address class, it would return ARES_SUCCESS rather than ARES_ECANCELLED.

[Bruce Dubbs]

Fixed at commits:

15ffd6c303 Update to c-ares-1.24.0.
d5ffede8db Update to traceroute-2.1.5.