rk_mdns 0.1.0

An mDNS responder and DNS-SD browser for Dart over a native library, so an application can be found on a local network without a system daemon.

Changelog

0.1.0

• First release. An mDNS responder and a DNS-SD browser, both halves, over a native library — no system daemon needed on any platform.
• Responder: service announcement (PTR, SRV, TXT, A, AAAA and the DNS-SD service-enumeration pointer), name-conflict resolution with probing and tie-breaking (RFC 6762 §8.1, §8.2), repeated announcement (§8.3), goodbye at zero TTL (§10.1), and separate answers for the instance and the host.
• Browser: <name>.local resolution, browsing a service type with arrivals and departures, TXT split into key/value pairs, and a cache with real lifetimes and known-answer suppression (§7.1).
• IPv4 and IPv6, unicast replies to the QU bit (§5.4), every failure returned as a value, and no panic across the FFI boundary.
• Sends on every interface, never on the one the routing table prefers. Measured 2026-08-05: without IP_MULTICAST_IF the datagram left by a virtual switch adapter on a four-interface machine, silently. There is no default-send path in this package, and rust/tests/every_interface.rs is what keeps it that way.
• Shares UDP 5353 with whatever already holds it — Chrome on Windows, avahi-daemon on Linux, mDNSResponder on Apple — and reports portInUse honestly when sharing is refused.