dgram: setMulticastInterface() outgoing interface selection
Checklist
-
make -j4 test
(UNIX), orvcbuild test nosign
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
dgram
Description of change
Add wrapper for uv's uv_udp_set_multicast_interface which provides the sender side mechanism to explicitly select an interface. (The equivalent receiver side mechanism is the optional 2nd argument of addMembership().)