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mDNS advertisement (native _punktfunk._udp AND GameStream _nvstream) can now be disabled with --no-mdns on serve/punktfunk1-host or PUNKTFUNK_MDNS=0 (the PUNKTFUNK_ZEROCOPY off-grammar) — for multicast-dead environments (bridged Docker, CI netns) where the advert reaches nobody or fails outright and aborts the GameStream plane; clients dial a manually-added host instead (mDNS-blind host-add works since the 0.8.4 dial-first fix). Unit tests no longer advertise on the LAN (mdns: false). punktfunk1-host gains --pairing-pin <PIN> (the already-plumbed fixed-PIN test seam, now CLI-exposed; empty refused like --mgmt-token) so a CI harness runs a deterministic SPAKE2 ceremony instead of scraping the logged PIN. Verified live: --no-mdns + PUNKTFUNK_MDNS=0 skip the advert, --pairing-pin arms with the fixed PIN, and a punktfunk1-host --source synthetic + punktfunk-probe loopback run passes verification (60/60 frames, 0 mismatch). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
90 lines
5.2 KiB
Markdown
90 lines
5.2 KiB
Markdown
---
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title: Host CLI
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description: The punktfunk-host commands and the flags you'll actually use.
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---
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The host is one binary, `punktfunk-host`. Most of the time you'll run a single command; the rest reads
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its settings from [`host.env`](/docs/configuration).
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## `serve`
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The normal way to run a host. By default `serve` starts the **secure native host**: the native
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`punktfunk/1` server (QUIC, SPAKE2 PIN pairing, per-direction AEAD) plus the management API/web
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console — all in one process. The native plane is **always on**; there is no flag to turn it off.
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```sh
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punktfunk-host serve
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```
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Add `--gamestream` (alias `--moonlight`) to **also** run the GameStream/Moonlight-compatible planes
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(nvhttp pairing, RTSP, ENet control, `_nvstream` mDNS) — required for stock [Moonlight](/docs/moonlight)
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clients. This is **opt-in** because GameStream carries inherent on-path weaknesses (pairing over plain
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HTTP; its legacy control encryption can reuse GCM nonces), so enable it **only on a trusted LAN**. The
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native plane is immune to those issues.
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```sh
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punktfunk-host serve --gamestream
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```
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| Flag | Meaning |
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| `--gamestream` / `--moonlight` | Also run the GameStream/Moonlight-compat planes (for stock Moonlight clients). Opt-in, trusted-LAN only — see above. |
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| `--native` | No-op. The native `punktfunk/1` server always runs in `serve`; kept only for backward compatibility. |
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| `--native-port <PORT>` | Native QUIC port (default `9777`). |
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| `--open` | Don't require pairing — serve any device on the network. Off by default; only for trusted single-user setups. |
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| `--mgmt-bind <IP:PORT>` | Management API address (default `0.0.0.0:47990` — all interfaces, so paired clients can browse the game library over mTLS; pass `127.0.0.1:47990` to keep it loopback-only). |
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| `--mgmt-token <TOKEN>` | Override the bearer token for the management API. |
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| `--no-mdns` | Skip the mDNS adverts (native + GameStream) — for networks/containers where multicast doesn't work. Clients connect via a manually added host instead. Same as `PUNKTFUNK_MDNS=0`. |
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These are the only flags `serve` accepts.
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The management API is **always HTTPS**. It binds all interfaces by default so a **paired client** can
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fetch the game library over its mTLS certificate — but off loopback that certificate reaches only the
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read-only status + library endpoints. The **admin surface** (arming pairing, removing devices, session
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control, library edits) authenticates with a **bearer token** and is honored **from loopback only**, so
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it is never LAN-exposed even under the default wide bind. If you don't pass `--mgmt-token`, a token is
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auto-generated and persisted to `~/.config/punktfunk/mgmt-token` (the bundled web console reads the same
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file); `--mgmt-token` only overrides it. Pass `--mgmt-bind 127.0.0.1:47990` to keep 47990 loopback-only.
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Every endpoint is documented in the interactive [**API Reference**](/api).
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By default the host **requires pairing** — see [Pairing & Trust](/docs/pairing). On `serve` you
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**arm pairing from the web console** (or mgmt API); the host then displays a 4-digit PIN. Pass `--open` to
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turn off the mandatory-pairing default and serve any device on the network (trusted single-user setups
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only). The pairing flags below are `punktfunk1-host`-only and do **not** apply to `serve`.
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## `punktfunk1-host`
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A standalone native-only host, mainly for testing the `punktfunk/1` path without the GameStream server
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or web console.
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```sh
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punktfunk-host punktfunk1-host --source virtual
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```
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| Flag | Meaning |
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| `--port <N>` | QUIC listen port (default `9777`). |
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| `--source synthetic` · `virtual` | `virtual` uses a real virtual display + NVENC; `synthetic` emits test frames. |
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| `--seconds <N>` / `--frames <N>` | Bound each session by wall-clock seconds or frame count. |
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| `--max-concurrent <N>` | Stream at most N sessions at once (default 4); overflow waits in the queue. |
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| `--max-sessions <N>` | Exit after N sessions (0 = serve forever). |
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| `--allow-pairing` | Accept PIN pairing; the host prints a PIN when a client pairs. |
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| `--require-pairing` | Only serve paired devices (implies `--allow-pairing`). |
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| `--pairing-pin <PIN>` | Use a fixed pairing PIN instead of a fresh random one per ceremony. For test harnesses/CI only — a guessable PIN defeats the ceremony's rate limit. |
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| `--no-mdns` | Skip the `_punktfunk._udp` advert; clients use `--connect HOST:PORT`. Same as `PUNKTFUNK_MDNS=0`. |
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`--max-concurrent`, `--allow-pairing`, and `--require-pairing` are **`punktfunk1-host`-only** — `serve` does not
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accept them. On `serve` you arm pairing from the web console instead, and concurrency is fixed at
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the built-in default (4 sessions) rather than settable from the command line.
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Both `serve` and `punktfunk1-host` advertise the host on the network so clients can discover it. List
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hosts from another machine with `punktfunk-probe --discover`. Where multicast doesn't work (some
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Docker/VLAN setups), pass `--no-mdns` (or set `PUNKTFUNK_MDNS=0`) and add the host in the client by
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address instead.
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## Environment
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Most behaviour (compositor, video source, input backend, zero-copy) is set in
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[`host.env`](/docs/configuration), not on the command line. When running as a
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[service](/docs/running-as-a-service), the unit loads `host.env` for you.
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