RELEASE: c-ares 1.18.0

[Daniel Stenberg]

Hi friends!

c-ares version 1.18.0

Get it from https://c-ares.org/ as always!

This is a feature and bugfix release.  It addresses a couple of new feature
requests as well as a couple of bug fixes.

Changes:
  o Add support for URI(Uniform Resource Identifier) records via
    ares_parse_uri_reply() [1]
  o Provide ares_nameser.h as a public interface as needed by NodeJS [5]
  o Update URLs from c-ares.haxx.se to c-ares.org [9]
  o During a domain search, treat ARES_ENODATA as ARES_NXDOMAIN so that the
    search process will continue to the next domain in the search.  [11]
  o Turn ares_gethostbyname() into a wrapper for ares_getaddrinfo() as they
    followed very similar code paths and ares_gethostbyaddr() has some more
    desirable features such as priority sorting and parallel queries for
    AF_UNSPEC. [12]
  o ares_getaddrinfo() now contains a name element in the address info
    structure as the last element.  This is not an API or ABI break due to
    the structure always being internally allocated and it being the last
    element. [12]
  o ares_parse_a_reply() and ares_parse_aaaa_reply() were nearly identical, those
    now use the same helper functions for parsing rather than having their own
    code. [12]
  o RFC6761 Section 6.3 says "localhost" lookups need to be special cased to
    return loopback addresses, and not forward queries to recursive dns servers.
    On Windows this now returns all loopback addresses, on other systems it
    returns 127.0.0.1 or ::1 always, and will never forward a request for
    "localhost" to outside DNS servers. [13]
  o Haiki: port [14]

Bug fixes:
  o add build to .gitignore [2]
  o z/OS minor update, add missing semicolon in ares_init.c [3]
  o Fix building when latest ax_code_coverage.m4 is imported [4]
  o Work around autotools 'error: too many loops' and other newer autotools
    import related bugs.
  o MinGW cross builds need advapi32 link as lower case [6]
  o Cygwin build fix due to containing both socket.h and winsock2.h [7]
  o ares_expand_name should allow underscores (_) as SRV records legitimately use
    them [8]
  o Allow '/' as a valid character for a returned name for CNAME in-addr.arpa
    delegation [10]
  o ares_getaddrinfo() was not honoring HOSTALIASES [12]
  o ares_getaddrinfo() had some test cases disabled due to a bug in the test
    framework itself which has now been resolved [12]
  o Due to Travis-CI becoming unfriendly to open-source, Cirrus-CI has now been
    brought online for automated unit testing.

Thanks go to these friendly people for their efforts and contributions:
   Biswapriyo Nath (@Biswa96)
   Brad House (@bradh352)
   Daniel Bevenius (@danbev)
   Daniel Stenberg (@bagder)
   Dhrumil Rana (@dhrumilrana)
   Felix Yan (@felixonmars)
   Jérôme Duval (@korli)
   Martin Holeš (@martin-256)
   Sinan Kaya
(9 contributors)

References to bug reports and discussions on issues:
  [1] = https://github.com/c-ares/c-ares/pull/411
  [2] = https://github.com/c-ares/c-ares/pull/410
  [3] = https://github.com/c-ares/c-ares/pull/414
  [4] = https://github.com/c-ares/c-ares/pull/418
  [5] = https://github.com/c-ares/c-ares/pull/417
  [6] = https://github.com/c-ares/c-ares/pull/420
  [7] = https://github.com/c-ares/c-ares/pull/422
  [8] = https://github.com/c-ares/c-ares/issues/424
  [9] = https://github.com/c-ares/c-ares/issues/423
  [10] = https://github.com/c-ares/c-ares/issues/427
  [11] = https://github.com/c-ares/c-ares/issues/426
  [12] = https://github.com/c-ares/c-ares/pull/428
  [13] = https://github.com/c-ares/c-ares/pull/430
  [14] = https://github.com/c-ares/c-ares/pull/431

-- 

  / daniel.haxx.se