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Roadmap

UPnPCast follows Semantic Versioning. Feature work is tracked here; bug fixes and doc updates land continuously. See CHANGELOG.md for what actually shipped.

Current state (v1.3.0)

  • ✅ SSDP discovery hardened: dedicated listener thread, SO_REUSEADDR before bind with ephemeral-port fallback, MulticastLock acquisition, device dedup by UDN
  • ✅ Coroutine-first public API (DLNACast facade over an instance-owned CoreManager engine)
  • ✅ Live playback state (getPlaybackState), cached progress with interpolation, volume/mute control
  • ✅ CastOptions: external subtitles (incl. Samsung), MIME/UPnP class overrides, custom DIDL-Lite
  • ✅ Local file casting with built-in HTTP server (Range/seek, correct MIME types, typed errors)
  • ✅ Test suite: 92 unit + protocol-level integration tests (in-process fake DLNA renderer)
  • ✅ Internals: typed RemoteDevice, unified UpnpHttp HTTP layer, pure-logic helpers

Near term (v1.3.x)

  • GENA event subscription — subscribe to AVTransport events instead of polling, so remote play/pause/stop is pushed to the app (StateVariable callbacks)
  • Explicit kotlinx-coroutines-android dependency — currently arrives transitively via androidx core-ktx; declare it explicitly so consumers aren't exposed to version drift
  • Restore the Maven Central publishing pipeline (v1.2.0+ currently ships via JitPack only; Central has legacy 1.1.2)

Later

  • Playlist / queue support (multiple items, next/previous, SetNextAVTransportURI)
  • Media browser support (ContentDirectory browsing of DLNA servers, not just renderers)
  • Multi-device group casting
  • Playback speed control (device-dependent)
  • IPv6 SSDP support
  • Demo app refresh to showcase CastOptions, getPlaybackState and the polling patterns

Design principles

  • No breaking public API changes within a minor version
  • Coroutine-first: suspend functions, no callbacks
  • Lightweight: no OkHttp/Gson; NanoHTTPD for local serving only
  • Honest docs: examples in the README/FAQ must compile against the current release