tree 48ec0594bcfa697b6c7a37bc0dca94810edc9d04
parent 77e70527ff5687e1db620f4834d38ca5cecbcb35
author Andrew Davies <awdavies@google.com> 1566342689 -0700
committer Andrew Davies <awdavies@google.com> 1567710705 -0700

[mdns][dev_finder] Add unicast receive support.

This allows devices in different subnets or behind port forwarding
to be found (in this case via port forwarding).

This is based off of the result occurring when querying for a device
running in QEMU due to port-forwarding (the destination address is no
longer marked as multicast after hostfwd translation).

See section 5.5

https://tools.ietf.org/html/rfc6762

Refactors connection interfaces for clarity.

Bug: 6537

Change-Id: I069572e340cb934b0bcc4df71a9d41e05ba34d05