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docs: update README + docs site for public readiness
Refresh the README and documentation for public visitors:

- README: public-facing rewrite with accurate status for all four native
  clients (macOS, Linux, Windows, Android) and the Windows host.
- docs site: fix stale client status (Android is a full client, not a
  scaffold; Windows client is stage-1 complete + signed MSIX), add the
  missing Android client section, correct "which client" guidance.
- Windows host: corrected from "deferred/scoped" to implemented & shipping
  (NVIDIA-only, x64-only) across windows-host, roadmap, status,
  requirements, running-as-a-service, and the README.
- Remove internal infrastructure from public docs (box names, private IPs,
  SSH/token commands, deploy topology); rewrite status.md as a public
  project-status page; sanitize ci.md and implementation-plan.md.
- Update clients/android and clients/apple READMEs to current state.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-20 18:59:23 +02:00

3.1 KiB

title, description
title description
Configuration The host.env settings — compositor, resolution, bitrate, input — and how to tune them.

The host reads its settings from ~/.config/punktfunk/host.env (a simple KEY=value file). Your setup guide gives you a starting host.env for your desktop; this page is the reference.

Session settings

These tell the host which desktop session to attach to. Your setup guide sets them for you.

Setting What it does
WAYLAND_DISPLAY The Wayland socket of your session (wayland-0 for a normal desktop).
XDG_CURRENT_DESKTOP Your desktop (GNOME, KDE).
XDG_RUNTIME_DIR, DBUS_SESSION_BUS_ADDRESS Needed when the host runs outside your interactive session (e.g. as a service).

Core settings

Setting Values Meaning
PUNKTFUNK_COMPOSITOR mutter · kwin · gamescope · wlroots Which backend creates the virtual display. Match your desktop.
PUNKTFUNK_VIDEO_SOURCE virtual · portal virtual creates a per-client display at its exact mode (the normal choice). portal captures an existing monitor instead.
PUNKTFUNK_ZEROCOPY 1 · 0 GPU zero-copy capture→encode. Leave on; it falls back to a CPU path automatically.
PUNKTFUNK_INPUT_BACKEND libei · gamescope · wlr · uinput How input is injected. libei for GNOME/KDE, gamescope for Bazzite.

Resolution and refresh rate

You don't set these on the host — the client chooses them. When a device connects, the host creates a virtual display at that device's resolution and refresh rate. A 1080p60 laptop and a 1440p120 desktop each get their own. (With Moonlight, set the mode in Moonlight's settings; the native clients let you pick a mode or default to the device's display.)

Bitrate

The client requests a bitrate; the host encodes to it. To find a good value for your link:

  • Native clients (Apple, Linux, and more): use the built-in speed test (from a host's menu). It measures your link, suggests a bitrate, and applies it.
  • Moonlight: set the bitrate in Moonlight's settings. Start moderate and raise it.

Multiple devices at once

Today the native punktfunk/1 host (serve --native) streams one session at a time — additional clients wait in the accept queue until the active session ends. Each session gets its own virtual display at the client's exact resolution; concurrent native sessions are on the roadmap.

(punktfunk1-host, the standalone test host, has a --max-concurrent N knob, default 4, bounded by your GPU's encoder — see the Host CLI reference — but serve --native does not take that flag.)

Codec and FEC

  • The host encodes HEVC (H.265) by default; AV1 is available for clients that support it.
  • The native protocol adds forward error correction for lossy links. PUNKTFUNK_FEC_PCT=N sets the redundancy percentage (the default is sensible for a normal LAN).

Diagnostics

  • PUNKTFUNK_PERF=1 logs per-stage timing (capture, encode, send) — handy when tuning latency.
  • RUST_LOG=info (or debug) controls log verbosity.