hatchery_node/
restream_session.rs

1//! Node end of a live restreamer session (A2 / A3).
2//!
3//! The node dials C2's uplink, OPENs a channel, then runs the inner Noise_NK
4//! handshake toward the relayed recipient key as ordinary DATA frames:
5//! msg1 goes up through C2 into the core drain, msg2 comes back down the same
6//! stream. After that every request and reply is Noise transport ciphertext,
7//! wrapped in C2's outer layer on the way up. C2 only ever sees opaque bytes,
8//! and the node never learns what sits behind C2.
9//!
10//! One TCP carries every channel (C2 routes downlink by node id). A single
11//! FIFO send queue would let browser frames or a stuck mail channel wedge PTY
12//! control (head-of-line blocking). Outbound traffic is therefore queued
13//! per-channel with priority scheduling, browser frames are coalesced under
14//! pressure, and a write timeout tears the socket down so the bridge reconnects.
15
16use crate::uplink_journal::UplinkJournal;
17use hatchery_core::inner::{decode_inner, encode_inner, InnerKind};
18use hatchery_core::nested::{node_seal_outer, NoiseInitiator, NoiseTransport, PublicKeyBytes};
19use hatchery_core::{grow_read_buf, ChannelKind, Frame, FrameError, FrameType, OpenPayload};
20use serde_json::{json, Value};
21use std::collections::{BTreeMap, VecDeque};
22use std::net::SocketAddr;
23use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
24use std::sync::{Arc, Mutex};
25use std::time::Duration;
26use tokio::io::{AsyncReadExt, AsyncWriteExt};
27use tokio::net::TcpStream;
28use tokio::sync::{mpsc, Notify};
29use tokio::task::JoinHandle;
30
31/// App-level ping on an idle node→C2 uplink (C2 answers Pong).
32const UPLINK_PING_EVERY: Duration = Duration::from_secs(10);
33/// No inbound bytes (pong or data) for this long => path is dead; reconnect.
34const UPLINK_DEAD_AFTER: Duration = Duration::from_secs(35);
35
36/// Keys C2 hands a node at enrollment: its own outer key and the upstream recipient key.
37#[derive(Clone, Copy, Debug)]
38pub struct UpstreamKeys {
39    pub c2_public: PublicKeyBytes,
40    pub recipient_public: PublicKeyBytes,
41}
42
43/// Outbound priority on the shared uplink. Lower ordinal = sent first.
44#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
45pub enum SendPrio {
46    /// OPEN, Noise handshake, journal replies, g4a request/response (incl. PTY input path).
47    Control = 0,
48    /// g4a terminal / event frames.
49    Pty = 1,
50    /// m4a mail/task calls.
51    Mail = 2,
52    /// dig2browser frames — droppable / coalesced under pressure.
53    Browser = 3,
54}
55
56const WRITE_TIMEOUT: Duration = Duration::from_secs(5);
57const CHAN_CAP_CONTROL: usize = 64;
58const CHAN_CAP_PTY: usize = 128;
59const CHAN_CAP_MAIL: usize = 16;
60const CHAN_CAP_BROWSER: usize = 8;
61
62struct Queued {
63    prio: SendPrio,
64    frame: Frame,
65}
66
67struct ChanQ {
68    q: VecDeque<Queued>,
69    /// Remaining WINDOW credit for DATA frames; None until the first WINDOW.
70    credit: Option<u32>,
71}
72
73impl ChanQ {
74    fn new() -> Self {
75        Self { q: VecDeque::new(), credit: None }
76    }
77
78    fn cap_for(prio: SendPrio) -> usize {
79        match prio {
80            SendPrio::Control => CHAN_CAP_CONTROL,
81            SendPrio::Pty => CHAN_CAP_PTY,
82            SendPrio::Mail => CHAN_CAP_MAIL,
83            SendPrio::Browser => CHAN_CAP_BROWSER,
84        }
85    }
86}
87
88struct OutState {
89    chans: BTreeMap<u32, ChanQ>,
90}
91
92/// One TCP uplink to C2 carrying any number of channels.
93pub struct NodeUplink {
94    enqueue: mpsc::UnboundedSender<(u32, SendPrio, Frame)>,
95    routes: Arc<Mutex<BTreeMap<u32, mpsc::UnboundedSender<Vec<u8>>>>>,
96    /// Last WINDOW credit per channel (updated by the reader).
97    credits: Arc<Mutex<BTreeMap<u32, u32>>>,
98    credit_pulse: Arc<Notify>,
99    journal: Option<Arc<UplinkJournal>>,
100    alive: Arc<AtomicBool>,
101    dead: Arc<Notify>,
102    tasks: Vec<JoinHandle<()>>,
103}
104
105impl Drop for NodeUplink {
106    fn drop(&mut self) {
107        self.alive.store(false, Ordering::SeqCst);
108        for t in &self.tasks {
109            t.abort();
110        }
111    }
112}
113
114impl NodeUplink {
115    pub async fn connect(uplink: SocketAddr, journal: Option<Arc<UplinkJournal>>) -> Result<Arc<Self>, String> {
116        let stream = TcpStream::connect(uplink).await.map_err(|e| e.to_string())?;
117        let _ = stream.set_nodelay(true);
118        let (mut rd, mut wr) = stream.into_split();
119        let (enq_tx, mut enq_rx) = mpsc::unbounded_channel::<(u32, SendPrio, Frame)>();
120        let routes: Arc<Mutex<BTreeMap<u32, mpsc::UnboundedSender<Vec<u8>>>>> = Arc::default();
121        let credits: Arc<Mutex<BTreeMap<u32, u32>>> = Arc::default();
122        let credit_pulse = Arc::new(Notify::new());
123        let alive = Arc::new(AtomicBool::new(true));
124        let dead = Arc::new(Notify::new());
125        let wake = Arc::new(Notify::new());
126
127        let out_state = Arc::new(Mutex::new(OutState { chans: BTreeMap::new() }));
128        // Last inbound byte (ms since `born`). The keepalive below pings C2 on
129        // an idle uplink so NAT/WG/conntrack state stays warm and a half-open
130        // path is detected in seconds, not discovered by the next HQ spawn
131        // (owner spawn after ~28 min idle sat ~23 s before reaching the node).
132        let born = std::time::Instant::now();
133        let last_rx = Arc::new(AtomicU64::new(0));
134
135        // Ingress into per-channel queues (never blocks the producer on TCP).
136        let state_in = Arc::clone(&out_state);
137        let wake_in = Arc::clone(&wake);
138        let alive_in = Arc::clone(&alive);
139        let ingress = tokio::spawn(async move {
140            while let Some((ch, prio, frame)) = enq_rx.recv().await {
141                if !alive_in.load(Ordering::SeqCst) {
142                    break;
143                }
144                let mut st = state_in.lock().expect("out");
145                let q = st.chans.entry(ch).or_insert_with(ChanQ::new);
146                let cap = ChanQ::cap_for(prio);
147                if prio == SendPrio::Browser {
148                    // Coalesce: keep only the newest browser frame under pressure.
149                    q.q.retain(|x| x.prio != SendPrio::Browser);
150                    if q.q.len() >= cap {
151                        // Still full of higher-prio work: drop this browser frame.
152                        continue;
153                    }
154                } else {
155                    while q.q.len() >= cap {
156                        // Drop lowest-priority (browser first, then mail) before refusing control/PTY.
157                        if let Some(i) = q
158                            .q
159                            .iter()
160                            .enumerate()
161                            .filter(|(_, x)| x.prio >= SendPrio::Mail)
162                            .max_by_key(|(_, x)| x.prio)
163                            .map(|(i, _)| i)
164                        {
165                            q.q.remove(i);
166                        } else if prio <= SendPrio::Pty {
167                            // Control/PTY: drop oldest same-or-lower in this channel.
168                            q.q.pop_front();
169                        } else {
170                            break;
171                        }
172                    }
173                    if q.q.len() >= cap {
174                        continue;
175                    }
176                }
177                q.q.push_back(Queued { prio, frame });
178                drop(st);
179                wake_in.notify_one();
180            }
181        });
182
183        // Fair/priority writer: always pick the globally highest-priority waiting frame
184        // whose channel has credit (DATA) or needs no credit (OPEN/control non-DATA).
185        let state_wr = Arc::clone(&out_state);
186        let wake_wr = Arc::clone(&wake);
187        let alive_wr = Arc::clone(&alive);
188        let dead_wr = Arc::clone(&dead);
189        let routes_wr = Arc::clone(&routes);
190        let writer = tokio::spawn(async move {
191            loop {
192                if !alive_wr.load(Ordering::SeqCst) {
193                    break;
194                }
195                let next = {
196                    let mut st = state_wr.lock().expect("out");
197                    pick_next(&mut st)
198                };
199                let Some((ch, is_data, frame)) = next else {
200                    wake_wr.notified().await;
201                    continue;
202                };
203                let Ok(bytes) = frame.encode() else {
204                    kill(&alive_wr, &dead_wr, &routes_wr);
205                    break;
206                };
207                match tokio::time::timeout(WRITE_TIMEOUT, wr.write_all(&bytes)).await {
208                    Ok(Ok(())) => {
209                        if is_data {
210                            let mut st = state_wr.lock().expect("out");
211                            if let Some(q) = st.chans.get_mut(&ch) {
212                                if let Some(c) = q.credit.as_mut() {
213                                    *c = c.saturating_sub(1);
214                                }
215                            }
216                        }
217                    }
218                    Ok(Err(_)) | Err(_) => {
219                        tracing::warn!(%ch, "uplink write timed out or failed; reconnecting");
220                        kill(&alive_wr, &dead_wr, &routes_wr);
221                        break;
222                    }
223                }
224            }
225        });
226
227        let enq_reader = enq_tx.clone();
228        let reader_journal = journal.clone();
229        let reader_routes = Arc::clone(&routes);
230        let alive_rd = Arc::clone(&alive);
231        let dead_rd = Arc::clone(&dead);
232        let state_rd = Arc::clone(&out_state);
233        let wake_rd = Arc::clone(&wake);
234        let credits_rd = Arc::clone(&credits);
235        let credit_pulse_rd = Arc::clone(&credit_pulse);
236        let last_rx_rd = Arc::clone(&last_rx);
237        let reader = tokio::spawn(async move {
238            let mut buf = vec![0u8; 128 * 1024];
239            let mut filled = 0usize;
240            loop {
241                let Ok(n) = rd.read(&mut buf[filled..]).await else { break };
242                if n == 0 {
243                    break;
244                }
245                filled += n;
246                last_rx_rd.store(born.elapsed().as_millis() as u64, Ordering::SeqCst);
247                loop {
248                    match Frame::decode(&buf[..filled]) {
249                        Ok((frame, used)) => {
250                            buf.copy_within(used..filled, 0);
251                            filled -= used;
252                            match frame.frame_type {
253                                FrameType::Data => {
254                                    let tx = reader_routes.lock().expect("routes").get(&frame.channel_id).cloned();
255                                    if let Some(tx) = tx {
256                                        let _ = tx.send(frame.payload);
257                                    }
258                                }
259                                FrameType::Window => {
260                                    let credit = frame.seq.min(u64::from(u32::MAX)) as u32;
261                                    {
262                                        let mut st = state_rd.lock().expect("out");
263                                        st.chans.entry(frame.channel_id).or_insert_with(ChanQ::new).credit = Some(credit);
264                                    }
265                                    credits_rd.lock().expect("credits").insert(frame.channel_id, credit);
266                                    credit_pulse_rd.notify_waiters();
267                                    wake_rd.notify_one();
268                                }
269                                FrameType::JournalReq => {
270                                    let Some(j) = reader_journal.as_ref() else { continue };
271                                    let limit = frame.journal_req_limit().unwrap_or(64) as usize;
272                                    if let Ok(body) = j.journal().reply_body(frame.channel_id, frame.seq, limit) {
273                                        if let Ok(reply) = Frame::journal_reply(frame.channel_id, &body) {
274                                            let _ = enq_reader.send((frame.channel_id, SendPrio::Control, reply));
275                                        }
276                                    }
277                                }
278                                FrameType::GoAway | FrameType::Close => {
279                                    kill(&alive_rd, &dead_rd, &reader_routes);
280                                    return;
281                                }
282                                _ => {}
283                            }
284                        }
285                        Err(FrameError::Truncated) => break,
286                        Err(_) => {
287                            kill(&alive_rd, &dead_rd, &reader_routes);
288                            return;
289                        }
290                    }
291                }
292                if filled == buf.len() {
293                    // Same grow path as C2: do not tear the bridge when a
294                    // single frame exceeds the initial 128 KiB read buf.
295                    if grow_read_buf(&mut buf, filled).is_err() {
296                        break;
297                    }
298                }
299            }
300            kill(&alive_rd, &dead_rd, &reader_routes);
301        });
302
303        let ka_tx = enq_tx.clone();
304        let alive_ka = Arc::clone(&alive);
305        let dead_ka = Arc::clone(&dead);
306        let routes_ka = Arc::clone(&routes);
307        let keepalive = tokio::spawn(async move {
308            let mut nonce = 0u64;
309            let mut tick = tokio::time::interval(UPLINK_PING_EVERY);
310            tick.tick().await;
311            loop {
312                tick.tick().await;
313                if !alive_ka.load(Ordering::SeqCst) {
314                    break;
315                }
316                let now = born.elapsed().as_millis() as u64;
317                let idle = now.saturating_sub(last_rx.load(Ordering::SeqCst));
318                if idle > UPLINK_DEAD_AFTER.as_millis() as u64 {
319                    tracing::warn!(idle_ms = idle, "uplink silent past keepalive deadline; reconnecting");
320                    kill(&alive_ka, &dead_ka, &routes_ka);
321                    break;
322                }
323                nonce = nonce.wrapping_add(1);
324                if ka_tx.send((0, SendPrio::Control, Frame::ping(nonce))).is_err() {
325                    break;
326                }
327            }
328        });
329
330        Ok(Arc::new(Self {
331            enqueue: enq_tx,
332            routes,
333            credits,
334            credit_pulse,
335            journal,
336            alive,
337            dead,
338            tasks: vec![ingress, writer, reader, keepalive],
339        }))
340    }
341
342    pub fn is_alive(&self) -> bool {
343        self.alive.load(Ordering::SeqCst)
344    }
345
346    /// Wait until the uplink is marked dead (write timeout / peer close).
347    pub async fn closed(&self) {
348        if !self.is_alive() {
349            return;
350        }
351        self.dead.notified().await;
352    }
353
354    fn push(&self, channel_id: u32, prio: SendPrio, frame: Frame) -> Result<(), String> {
355        if !self.is_alive() {
356            return Err("uplink closed".into());
357        }
358        self.enqueue
359            .send((channel_id, prio, frame))
360            .map_err(|_| "uplink closed".to_owned())
361    }
362
363    /// OPEN `channel_id`, wait for WINDOW credit, then complete Noise_NK.
364    pub async fn open(
365        self: &Arc<Self>,
366        node_id: &str,
367        channel_id: u32,
368        kind: ChannelKind,
369        keys: UpstreamKeys,
370        handshake_timeout: Duration,
371    ) -> Result<NodeSession, String> {
372        let (down_tx, mut down_rx) = mpsc::unbounded_channel::<Vec<u8>>();
373        self.routes.lock().expect("routes").insert(channel_id, down_tx);
374        self.credits.lock().expect("credits").remove(&channel_id);
375        let open = Frame::open(channel_id, &OpenPayload { channel_kind: kind, node_id: node_id.to_owned() })
376            .map_err(|e| e.to_string())?;
377        self.push(channel_id, SendPrio::Control, open)?;
378
379        // Wait until C2 grants WINDOW credit after OPEN (avoids sending Handshake1
380        // into a stream that still has credit 0 from a previous session).
381        tokio::time::timeout(handshake_timeout, async {
382            loop {
383                if !self.is_alive() {
384                    return Err("uplink closed".to_owned());
385                }
386                if self.credits.lock().expect("credits").get(&channel_id).copied().unwrap_or(0) > 0 {
387                    return Ok(());
388                }
389                tokio::select! {
390                    _ = self.credit_pulse.notified() => {}
391                    _ = self.closed() => return Err("uplink closed".to_owned()),
392                }
393            }
394        })
395        .await
396        .map_err(|_| "window credit timeout after OPEN".to_owned())??;
397
398        let mut initiator = NoiseInitiator::new(keys.recipient_public).map_err(|e| e.to_string())?;
399        let msg1 = initiator.write_message1().map_err(|e| e.to_string())?;
400        self.send_inner(channel_id, keys, SendPrio::Control, &encode_inner(InnerKind::Handshake1, &msg1))?;
401
402        let msg2 = tokio::time::timeout(handshake_timeout, async {
403            loop {
404                let Some(bytes) = down_rx.recv().await else { return Err("uplink closed".to_owned()) };
405                if let Some((InnerKind::Handshake2, body)) = decode_inner(&bytes) {
406                    return Ok(body.to_vec());
407                }
408            }
409        })
410        .await
411        .map_err(|_| "handshake timeout".to_owned())??;
412        let transport = initiator.read_message2(&msg2).map_err(|e| e.to_string())?;
413        Ok(NodeSession {
414            channel_id,
415            keys,
416            default_prio: match kind {
417                ChannelKind::M4a => SendPrio::Mail,
418                ChannelKind::G4aControl | ChannelKind::G4aPty | ChannelKind::G4aEvents => SendPrio::Pty,
419                ChannelKind::Vault | ChannelKind::Observation => SendPrio::Mail,
420            },
421            down: down_rx,
422            transport,
423            journal: self.journal.clone(),
424            uplink: Arc::clone(self),
425        })
426    }
427
428    fn send_inner(&self, channel_id: u32, keys: UpstreamKeys, prio: SendPrio, inner: &[u8]) -> Result<(), String> {
429        if let Some(j) = &self.journal {
430            j.append(channel_id, inner)?;
431        }
432        let sealed = node_seal_outer(keys.c2_public, inner).map_err(|e| e.to_string())?;
433        let frame = Frame::data(channel_id, 0, sealed).map_err(|e| e.to_string())?;
434        self.push(channel_id, prio, frame)
435    }
436}
437
438fn kill(alive: &AtomicBool, dead: &Notify, routes: &Mutex<BTreeMap<u32, mpsc::UnboundedSender<Vec<u8>>>>) {
439    if alive.swap(false, Ordering::SeqCst) {
440        routes.lock().expect("routes").clear();
441        dead.notify_waiters();
442    }
443}
444
445/// Pick the highest-priority queued frame that may be sent now.
446fn pick_next(st: &mut OutState) -> Option<(u32, bool, Frame)> {
447    // Flatten candidates: (prio, channel, index)
448    let mut best: Option<(SendPrio, u32, usize)> = None;
449    for (&ch, cq) in &st.chans {
450        for (i, item) in cq.q.iter().enumerate() {
451            let needs_credit = matches!(item.frame.frame_type, FrameType::Data);
452            if needs_credit {
453                match cq.credit {
454                    Some(0) => continue,
455                    None => {
456                        // No WINDOW yet: allow Control DATA (handshake) so OPEN→Handshake1 works;
457                        // hold back bulk traffic.
458                        if item.prio > SendPrio::Control {
459                            continue;
460                        }
461                    }
462                    Some(_) => {}
463                }
464            }
465            let cand = (item.prio, ch, i);
466            if best.is_none_or(|b| cand.0 < b.0 || (cand.0 == b.0 && cand.1 < b.1)) {
467                best = Some(cand);
468            }
469        }
470    }
471    let (prio, ch, idx) = best?;
472    let cq = st.chans.get_mut(&ch)?;
473    let item = cq.q.remove(idx)?;
474    debug_assert_eq!(item.prio, prio);
475    let is_data = matches!(item.frame.frame_type, FrameType::Data);
476    Some((ch, is_data, item.frame))
477}
478
479pub struct NodeSession {
480    channel_id: u32,
481    keys: UpstreamKeys,
482    default_prio: SendPrio,
483    down: mpsc::UnboundedReceiver<Vec<u8>>,
484    transport: NoiseTransport,
485    journal: Option<Arc<UplinkJournal>>,
486    uplink: Arc<NodeUplink>,
487}
488
489impl NodeSession {
490    pub async fn connect(
491        uplink: SocketAddr,
492        node_id: &str,
493        channel_id: u32,
494        kind: ChannelKind,
495        keys: UpstreamKeys,
496        journal: Option<Arc<UplinkJournal>>,
497        handshake_timeout: Duration,
498    ) -> Result<Self, String> {
499        let link = NodeUplink::connect(uplink, journal).await?;
500        link.open(node_id, channel_id, kind, keys, handshake_timeout).await
501    }
502
503    pub fn uplink(&self) -> Arc<NodeUplink> {
504        Arc::clone(&self.uplink)
505    }
506
507    pub async fn send(&mut self, plaintext: &[u8]) -> Result<(), String> {
508        self.send_prio(plaintext, self.default_prio).await
509    }
510
511    pub async fn send_prio(&mut self, plaintext: &[u8], prio: SendPrio) -> Result<(), String> {
512        if !self.uplink.is_alive() {
513            return Err("uplink closed".into());
514        }
515        let ct = self.transport.encrypt(plaintext).map_err(|e| e.to_string())?;
516        let inner = encode_inner(InnerKind::Transport, &ct);
517        self.uplink.send_inner(self.channel_id, self.keys, prio, &inner)
518    }
519
520    pub async fn recv(&mut self, timeout: Duration) -> Result<Vec<u8>, String> {
521        tokio::time::timeout(timeout, async {
522            loop {
523                tokio::select! {
524                    bytes = self.down.recv() => {
525                        let Some(bytes) = bytes else { return Err("uplink closed".to_owned()) };
526                        if let Some((InnerKind::Transport, ct)) = decode_inner(&bytes) {
527                            return self.transport.decrypt(ct).map_err(|e| e.to_string());
528                        }
529                    }
530                    _ = self.uplink.closed() => return Err("uplink closed".to_owned()),
531                }
532            }
533        })
534        .await
535        .map_err(|_| "reply timeout".to_owned())?
536    }
537
538    pub async fn call(&mut self, op: &str, payload: &Value, timeout: Duration) -> Result<Value, String> {
539        let req = serde_json::to_vec(&json!({ "op": op, "payload": payload })).map_err(|e| e.to_string())?;
540        self.send_prio(&req, SendPrio::Mail).await?;
541        let reply = self.recv(timeout).await?;
542        let reply: Value = serde_json::from_slice(&reply).map_err(|e| e.to_string())?;
543        let status = reply.get("status").and_then(Value::as_u64).unwrap_or(500);
544        let body = reply.get("body").cloned().unwrap_or(Value::Null);
545        if status == 200 {
546            Ok(body)
547        } else {
548            let msg = body.get("error").and_then(Value::as_str).unwrap_or("error");
549            Err(format!("{status}: {msg}"))
550        }
551    }
552}
553
554#[cfg(test)]
555mod tests {
556    use super::*;
557
558    #[test]
559    fn pick_prefers_control_over_browser() {
560        let mut st = OutState { chans: BTreeMap::new() };
561        let q = st.chans.entry(1).or_insert_with(ChanQ::new);
562        q.credit = Some(10);
563        q.q.push_back(Queued {
564            prio: SendPrio::Browser,
565            frame: Frame::data(1, 0, vec![1]).unwrap(),
566        });
567        q.q.push_back(Queued {
568            prio: SendPrio::Control,
569            frame: Frame::data(1, 0, vec![2]).unwrap(),
570        });
571        q.q.push_back(Queued {
572            prio: SendPrio::Pty,
573            frame: Frame::data(1, 0, vec![3]).unwrap(),
574        });
575        let (_, _, f) = pick_next(&mut st).unwrap();
576        assert_eq!(f.payload, vec![2]);
577        let (_, _, f) = pick_next(&mut st).unwrap();
578        assert_eq!(f.payload, vec![3]);
579        let (_, _, f) = pick_next(&mut st).unwrap();
580        assert_eq!(f.payload, vec![1]);
581    }
582
583    #[test]
584    fn pick_holds_bulk_until_window() {
585        let mut st = OutState { chans: BTreeMap::new() };
586        let q = st.chans.entry(2).or_insert_with(ChanQ::new);
587        q.credit = None;
588        q.q.push_back(Queued {
589            prio: SendPrio::Mail,
590            frame: Frame::data(2, 0, vec![9]).unwrap(),
591        });
592        q.q.push_back(Queued {
593            prio: SendPrio::Control,
594            frame: Frame::data(2, 0, vec![1]).unwrap(),
595        });
596        let (_, _, f) = pick_next(&mut st).unwrap();
597        assert_eq!(f.payload, vec![1]);
598        assert!(pick_next(&mut st).is_none());
599        st.chans.get_mut(&2).unwrap().credit = Some(4);
600        let (_, _, f) = pick_next(&mut st).unwrap();
601        assert_eq!(f.payload, vec![9]);
602    }
603}
hatchery_node/restream_session.rs

hatchery_node/
restream_session.rs
