44 lines
1.3 KiB
ReStructuredText
44 lines
1.3 KiB
ReStructuredText
.. _dns_resolve_interface:
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DNS Resolve
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###########
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.. contents::
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:local:
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:depth: 2
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Overview
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********
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The DNS resolver implements a basic DNS resolver according
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to `IETF RFC1035 on Domain Implementation and Specification <https://tools.ietf.org/html/rfc1035>`_.
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Supported DNS answers are IPv4/IPv6 addresses and CNAME.
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If a CNAME is received, the DNS resolver will create another DNS query.
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The number of additional queries is controlled by the
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:kconfig:option:`CONFIG_DNS_RESOLVER_ADDITIONAL_QUERIES` Kconfig variable.
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The multicast DNS (mDNS) client resolver support can be enabled by setting
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:kconfig:option:`CONFIG_MDNS_RESOLVER` Kconfig option.
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See `IETF RFC6762 <https://tools.ietf.org/html/rfc6762>`_ for more details
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about mDNS.
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The link-local multicast name resolution (LLMNR) client resolver support can be
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enabled by setting the :kconfig:option:`CONFIG_LLMNR_RESOLVER` Kconfig variable.
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See `IETF RFC4795 <https://tools.ietf.org/html/rfc4795>`_ for more details
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about LLMNR.
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For more information about DNS configuration variables, see:
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:zephyr_file:`subsys/net/lib/dns/Kconfig`. The DNS resolver API can be found at
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:zephyr_file:`include/zephyr/net/dns_resolve.h`.
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Sample usage
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************
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See :zephyr:code-sample:`dns-resolve` sample application for details.
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API Reference
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*************
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.. doxygengroup:: dns_resolve
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