c-ares

A C library for asynchronous DNS requests (grpc依赖)

Brad House d974c556bb Support ipv6 link-local servers and %iface syntax (#646 ) Some environments may send router advertisements on a link setting their link-local (fe80::/10) address as a valid DNS server to the remote system. This will cause a DNS entry to be created like `fe80::1%iface`, since all link-local network interfaces are technically part of the same /10 subnet, it must be told what interface to send packets through explicitly if there are multiple physical interfaces. This PR adds support for the %iface modifier when setting DNS servers via `/etc/resolv.conf` as well as via `ares_set_servers_csv()`. For MacOS and iOS it is assumed that libresolve will set the `sin6_scope_id` and should be supported, but my test systems don't seem to read the Router Advertisement for RDNSS link-local. Specifying the link-local dns server on MacOS via adig has been tested and confirmed working. For Windows, this is similar to MacOS in that the system doesn't seem to honor the RDNSS RA, but specifying manually has been tested to work. At this point, Android support does not exist. Fixes Bug #462 Supersedes PR #463 Fix By: Brad House (@bradh352) and Serhii Purik (@sergvpurik)		12 months ago
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.gitignore	Avoid buffer overflow in RC4 loop comparison (#336 )	4 years ago
ax_ac_append_to_file.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_ac_print_to_file.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_add_am_macro_static.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_am_macros_static.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_append_compile_flags.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_append_flag.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_check_compile_flag.m4	Increase compiler warnings by default (#568 )	1 year ago
ax_check_gnu_make.m4	autotools: add ax_check_gnu_make.m4	3 years ago
ax_check_user_namespace.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
ax_check_uts_namespace.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
ax_code_coverage.m4	autotools: dont use newer AC_CHECK_INCLUDES_DEFAULT, don't quote AC_ERROR_MSG	3 years ago
ax_cxx_compile_stdcxx.m4	sync ax_cxx_compile_stdcxx_11.m4 with upstream (#505 )	2 years ago
ax_cxx_compile_stdcxx_11.m4	sync ax_cxx_compile_stdcxx_11.m4 with upstream (#505 )	2 years ago
ax_file_escapes.m4	import more files needed by newer ax_code_coverage.m4	3 years ago
ax_pthread.m4	sync ax_pthread.m4 with upstream (#507 )	2 years ago
ax_require_defined.m4	autotools: add ax_require_defined.m4	3 years ago
cares-compilers.m4	Increase compiler warnings by default (#568 )	1 year ago
cares-confopts.m4	Increase compiler warnings by default (#568 )	1 year ago
cares-functions.m4	Support ipv6 link-local servers and %iface syntax (#646 )	12 months ago
cares-reentrant.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
xc-am-iface.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
xc-cc-check.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
xc-lt-iface.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
xc-translit.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
xc-val-flgs.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago
zz40-xc-ovr.m4	provide SPDX identifiers and a REUSE CI job to verify	1 year ago