[dnssd-server] implement DNS-SD discovery proxy functionality in core (#10050)

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This commit implements a generic discovery proxy in the DNS-SD server.
It uses a set of newly added `otPlatDnssd` platform DNS-SD(mDNS) APIs
to start or stop browsers, SRV/TXT resolvers, and IPv6/IPv4 address
resolvers. These APIs closely match the native OpenThread mDNS
implementation.

OpenThread DNS-SD's existing `QueryCallback` mechanism, enabling
customized discovery proxy implementations, remains supported.

This commit includes a comprehensive unit test. This test validates
the discovery proxy's behavior, covering: standard use cases, request
timeout, s hared resolver/browser usage for multiple queries with the
same name, filtering of invalid addresses, and various edge cases.

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This commit is contained in:

Abtin Keshavarzian

2024-06-10 12:16:24 -07:00

committed by GitHub

parent a8f07b57cf

commit 5dbbab175b

17 changed files with 4617 additions and 139 deletions

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tests/unit/test_dnssd_discovery_proxy.cpp

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