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`ci.yml`'s clippy gate has been failing on main since the pre-0.16.0 sweep landed, and because clippy stops at the first crate it can't compile, the visible error was only ever the first of four. `ci.yml` is not tag-triggered, so v0.16.0 cut and shipped over a red main; none of this reaches the release artifacts (the two E0308s are in a test binary and a dev tool, and the rest are lints) but the gate has been blind since. Fixed, in the order clippy surfaced them: - clients/probe failed to COMPILE (E0308, x2). `810d918d` moved `clock_sync` onto the resumable `io::MsgReader` but only updated the client pump, leaving the probe passing a bare `&mut RecvStream`. The probe now wraps the control stream in a `MsgReader` at `open_bi` and threads that everywhere — Welcome, the --remode and --bitrate watchers, and the speed-test result read — which is also what the refactor was for: those reads sit behind timeouts and `select!`, exactly where a straddling frame would desync the stream for the rest of the run. - pf-capture: `SPA_META_Cursor as u32` is a `u32 -> u32` no-op (`clippy::unnecessary_cast`). Line 1274 already passes the same constant uncast, so the type is not in question. - pf-inject: `noop as usize` on the SIGUSR1 wake handler added in `986402f7` trips `clippy::function_casts_as_integer`; goes via `*const ()` as the lint asks. Same value in the `usize`-typed `sa_sigaction` slot. - punktfunk-core: the `ctrl_framing` test module's `use super::*` is unused, which `-D warnings` promotes to an error. Verified with CI's own commands on a Linux box (this is all Linux-gated code, so a Mac cannot check it): `cargo clippy --workspace --all-targets --locked -- -D warnings` finishes clean, `cargo build --workspace --locked` succeeds, and `cargo test --workspace --locked` exits 0 with no failures — including punktfunk-core's 196-test suite, which covers the control-stream framing the probe change touches. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
punktfunk — probe (reference client)
punktfunk-probe is the headless reference client for the punktfunk/1 protocol — a
command-line tool for testing, latency measurement, and validating host behavior. It's not a
streaming app you'd watch on; it connects, exercises a plane, and reports numbers. If you want to
actually stream, use the Linux, Windows,
Apple, or Android clients.
Because it links the same punktfunk-core as every other client, it's also the canonical
example of driving the protocol end to end: QUIC control plane, UDP data plane, and the side planes
(input, audio, rumble) over QUIC datagrams.
What it does
- Receives a real stream, writes a playable elementary stream (
.h265/.h264/.av1— the extension tracks the negotiated codec; the probe advertises all three and the host picks), and reports per-frame capture→received latency percentiles (the host stamps each frame with its capture clock). - Verification mode against a synthetic host — byte-checks deterministic test frames.
- Exercises every plane with scripted test traffic:
--input-test(mouse/keyboard),--mic-test(a 440 Hz Opus tone up to the host mic),--touch-test(a synthetic finger),--rich-input-test(DualSense touchpad + motion, logging the HID-output feedback that comes back). - Trust —
--pin <64-hex>pins the host fingerprint;--pair <PIN>runs the SPAKE2 pairing ceremony and prints the verified fingerprint to pin from then on. Without a pin it trusts on first use. - Discovery —
--discover [secs]browses the LAN for_punktfunk._udphosts and prints each (name, addr:port, pairing requirement, cert fingerprint), then exits. - Negotiation knobs —
--mode WxHxFPS,--remode(mid-stream mode change),--bitrate,--codec auto|h264|hevc|av1(preference; the host resolves),--audio-channels(stereo / 5.1 / 7.1),--compositor,--gamepad,--launch,--speed-test. Env:PUNKTFUNK_CLIENT_10BIT=1/PUNKTFUNK_CLIENT_444=1advertise the 10-bit / 4:4:4 client caps (for testing a host'sPUNKTFUNK_10BIT/PUNKTFUNK_444).
Usage
# stream 720p120 from a host, save the video, and print latency percentiles:
cargo run -p punktfunk-probe -- --mode 1280x720x120 --connect HOST:PORT --out /tmp/a.h265
# list hosts on the LAN:
cargo run -p punktfunk-probe -- --discover
# pair with a host that requires it (read the PIN off the host), then stream:
cargo run -p punktfunk-probe -- --connect HOST:PORT --pair 1234
cargo run -p punktfunk-probe -- --connect HOST:PORT --pin <64-hex> --input-test
Full flag reference is in the module doc-comment at the top of src/main.rs.
Related
- Project README — the host, the streaming clients, and the protocol
punktfunk-host punktfunk1-host— the persistent native-protocol listener to probe against (see the "Running on this box" section of the repo README /CLAUDE.md)