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c-ares version 1.22.0
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This is a feature release with some significant internal changes.
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Features:
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o ares_reinit() is now implemented to re-read any system configuration and
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immediately apply to an existing ares channel [2]
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o The adig command line program has been rewritten and its format now more
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closely matches that of BIND's dig utility [3]
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o The new DNS message parser and writer functions have now been made public [4]
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o RFC9460 HTTPS and SVCB records are now supported [5]
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o RFC6698 TLSA records are now supported [6]
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o The server list is now internally dynamic and can be changed without
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impacting existing queries [10]
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o Hosts file processing is now cached until the file is detected to be changed
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to speed up repetitive lookups of large hosts files [11]
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Changes:
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o Internally all DNS messages are now written using the new DNS writing
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functions [7]
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o EDNS is now enabled by default [8]
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o Internal cleanups in function prototypes [9]
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Bug Fixes:
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o Randomize retry penalties to prevent thundering herd issues when dns
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servers throttle requests [1]
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o Fix Windows build error for missing if_indextoname() [10]
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Thanks go to these friendly people for their efforts and contributions:
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Brad House (@bradh352)
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Daniel Stenberg (@bagder)
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Ignat (@Kontakter)
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Jonas Kvinge (@jonaski)
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(4 contributors)
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References to bug reports and discussions on issues:
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[1] = https://github.com/c-ares/c-ares/pull/606
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[2] = https://github.com/c-ares/c-ares/pull/614
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[3] = https://github.com/c-ares/c-ares/pull/607
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[4] = https://github.com/c-ares/c-ares/pull/604
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[5] = https://github.com/c-ares/c-ares/pull/603
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[6] = https://github.com/c-ares/c-ares/pull/600
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[7] = https://github.com/c-ares/c-ares/pull/598
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[8] = https://github.com/c-ares/c-ares/pull/596
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[9] = https://github.com/c-ares/c-ares/pull/595
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[10] = https://github.com/c-ares/c-ares/pull/594
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[11] = https://github.com/c-ares/c-ares/pull/591
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