switch from c-ares to getdns

.github/CODEOWNERS

@@ -33,7 +33,7 @@
 
 # net
 
-/deps/cares @nodejs/net
+/deps/getdns @nodejs/net
 /doc/api/dns.md @nodejs/net
 /doc/api/dgram.md @nodejs/net
 /doc/api/net.md @nodejs/net
@@ -45,9 +45,10 @@
 /lib/internal/net.js @nodejs/net
 /lib/internal/socket_list.js @nodejs/net
 /lib/internal/js_stream_socket.js @nodejs/net
-/src/cares_wrap.cc @nodejs/net
 /src/connect_wrap.* @nodejs/net
 /src/connection_wrap.* @nodejs/net
+/src/node_dns.cc @nodejs/net
+/src/node_dns.h @nodejs/net
 /src/node_sockaddr* @nodejs/net
 /src/tcp_wrap.* @nodejs/net
 /src/udp_wrap.* @nodejs/net

LICENSE

@@ -99,21 +99,29 @@ The externally maintained libraries used by Node.js are:
     THE SOFTWARE.
   """
 
-- c-ares, located at deps/cares, is licensed as follows:
+- getdns, located at deps/getdns, is licensed as follows:
   """
-    Copyright (c) 2007 - 2018, Daniel Stenberg with many contributors, see AUTHORS
-    file.
-
-    Copyright 1998 by the Massachusetts Institute of Technology.
-
-    Permission to use, copy, modify, and distribute this software and its
-    documentation for any purpose and without fee is hereby granted, provided that
-    the above copyright notice appear in all copies and that both that copyright
-    notice and this permission notice appear in supporting documentation, and that
-    the name of M.I.T. not be used in advertising or publicity pertaining to
-    distribution of the software without specific, written prior permission.
-    M.I.T. makes no representations about the suitability of this software for any
-    purpose.  It is provided "as is" without express or implied warranty.
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the names of the copyright holders nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL Verisign, Inc. BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   """
 
 - cjs-module-lexer, located at deps/cjs-module-lexer, is licensed as follows:

configure.py

@@ -394,27 +394,26 @@
     dest='shared_brotli_libpath',
     help='a directory to search for the shared brotli DLL')
 
-shared_optgroup.add_argument('--shared-cares',
+shared_optgroup.add_argument('--shared-getdns',
     action='store_true',
-    dest='shared_cares',
-    default=None,
-    help='link to a shared cares DLL instead of static linking')
+    dest='shared_getdns',
+    help='link to a shared getdns DLL instead of static linking')
 
-shared_optgroup.add_argument('--shared-cares-includes',
+shared_optgroup.add_argument('--shared-getdns-includes',
     action='store',
-    dest='shared_cares_includes',
-    help='directory containing cares header files')
+    dest='shared_getdns_includes',
+    help='directory containing getdns header files')
 
-shared_optgroup.add_argument('--shared-cares-libname',
+shared_optgroup.add_argument('--shared-getdns-libname',
     action='store',
-    dest='shared_cares_libname',
-    default='cares',
-    help='alternative lib name to link to [default: %(default)s]')
+    dest='shared_getdns_libname',
+    default='getdns',
+    help='alternative lib name to link to [default: %default]')
 
-shared_optgroup.add_argument('--shared-cares-libpath',
+shared_optgroup.add_argument('--shared-getdns-libpath',
     action='store',
-    dest='shared_cares_libpath',
-    help='a directory to search for the shared cares DLL')
+    dest='shared_getdns_libpath',
+    help='a directory to search for the shared getdns DLL')
 
 parser.add_argument_group(shared_optgroup)
 
@@ -1880,10 +1879,10 @@ def make_bin_override():
 configure_library('http_parser', output)
 configure_library('libuv', output)
 configure_library('brotli', output, pkgname=['libbrotlidec', 'libbrotlienc'])
-configure_library('cares', output, pkgname='libcares')
 configure_library('nghttp2', output, pkgname='libnghttp2')
 configure_library('nghttp3', output, pkgname='libnghttp3')
 configure_library('ngtcp2', output, pkgname='libngtcp2')
+configure_library('getdns', output)
 configure_v8(output)
 configure_openssl(output)
 configure_intl(output)