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wz-phone/crates/wzp-client/src/analyzer.rs
Siavash Sameni 18e5e75f33
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feat(analyzer): encrypted payload decoding in replay mode (#17)
When --key <64-char-hex> is provided with --replay, the analyzer
decrypts each packet's ChaCha20-Poly1305 payload using the session
key and logs plaintext frame sizes. Prints first 5 + every 100th
decrypt result, and a summary at the end.

This completes all 5 protocol analyzer tasks (#13-17):
- #13: Observer mode (live passive listener) — was done
- #14: TUI with Ratatui (per-participant panels) — was done
- #15: Capture and replay (.wzp format) — was done
- #16: HTML report (Chart.js loss/jitter graphs) — was done
- #17: Encrypted decode (--key for replay) — done now

Usage:
  wzp-analyzer --replay session.wzp --key <64-hex-chars> --html report.html

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-14 17:07:43 +04:00

953 lines
31 KiB
Rust

//! WarzonePhone Protocol Analyzer — passive call quality observer.
//!
//! Joins a relay room as a passive participant (no media sent) and displays
//! real-time per-participant quality metrics in a terminal UI.
//!
//! Usage:
//! wzp-analyzer 127.0.0.1:4433 --room test
//! wzp-analyzer 1.2.3.4:4433 --room test --capture session.wzp
//! wzp-analyzer 1.2.3.4:4433 --room test --no-tui --duration 60
use std::io::Write;
use std::sync::Arc;
use std::time::{Duration, Instant};
use clap::Parser;
use tracing::info;
use wzp_proto::{CodecId, MediaPacket, MediaTransport};
// ---------------------------------------------------------------------------
// CLI
// ---------------------------------------------------------------------------
/// WarzonePhone Protocol Analyzer — passive call quality observer
#[derive(Parser)]
#[command(name = "wzp-analyzer", version)]
struct Args {
/// Relay address (host:port) — required for live mode, ignored with --replay
relay: Option<String>,
/// Room name to observe — required for live mode, ignored with --replay
#[arg(short, long)]
room: Option<String>,
/// Auth token for relay
#[arg(long)]
token: Option<String>,
/// Identity seed (64-char hex)
#[arg(long)]
seed: Option<String>,
/// Capture packets to file
#[arg(long)]
capture: Option<String>,
/// Auto-stop after N seconds
#[arg(long)]
duration: Option<u64>,
/// Disable TUI (print stats to stdout instead)
#[arg(long)]
no_tui: bool,
/// Replay a captured .wzp file (offline analysis)
#[arg(long)]
replay: Option<String>,
/// Generate HTML report (from live session or replay)
#[arg(long)]
html: Option<String>,
/// Session key hex for decrypting payloads (enables audio decode)
// TODO(#17): Audio decode requires session key + nonce context.
// In SFU mode, payloads are E2E encrypted. Decoding requires
// either: (a) session key from both endpoints, or (b) running
// the analyzer as a trusted participant with its own key exchange.
// For now, header-only analysis provides loss%, jitter, codec stats.
#[arg(long)]
key: Option<String>,
}
// ---------------------------------------------------------------------------
// Per-participant statistics
// ---------------------------------------------------------------------------
struct ParticipantStats {
/// Stream identifier (index, assigned when we detect a new seq stream)
stream_id: usize,
/// Display name from RoomUpdate (if available)
alias: Option<String>,
/// Current codec
codec: CodecId,
/// Total packets received
packets: u64,
/// Detected lost packets (sequence gaps)
lost: u64,
/// Last seen sequence number
last_seq: u16,
/// Whether we've seen the first packet (for gap detection)
seq_initialized: bool,
/// EWMA jitter in ms
jitter_ms: f64,
/// Last packet arrival time
last_arrival: Option<Instant>,
/// Codec changes observed
codec_switches: u32,
/// First packet time
first_seen: Instant,
/// Last packet time
last_seen: Instant,
}
impl ParticipantStats {
fn new(id: usize, codec: CodecId) -> Self {
let now = Instant::now();
Self {
stream_id: id,
alias: None,
codec,
packets: 0,
lost: 0,
last_seq: 0,
seq_initialized: false,
jitter_ms: 0.0,
last_arrival: None,
codec_switches: 0,
first_seen: now,
last_seen: now,
}
}
fn ingest(&mut self, pkt: &MediaPacket, now: Instant) {
self.packets += 1;
self.last_seen = now;
// Codec switch detection
if pkt.header.codec_id != self.codec {
self.codec_switches += 1;
self.codec = pkt.header.codec_id;
}
// Loss detection from sequence gaps
if self.seq_initialized {
let expected = self.last_seq.wrapping_add(1);
let gap = pkt.header.seq.wrapping_sub(expected);
if gap > 0 && gap < 100 {
self.lost += gap as u64;
}
}
self.last_seq = pkt.header.seq;
self.seq_initialized = true;
// Jitter (inter-arrival time variance, EWMA)
if let Some(last) = self.last_arrival {
let interval_ms = now.duration_since(last).as_secs_f64() * 1000.0;
let expected_ms = pkt.header.codec_id.frame_duration_ms() as f64;
let diff = (interval_ms - expected_ms).abs();
self.jitter_ms = 0.1 * diff + 0.9 * self.jitter_ms;
}
self.last_arrival = Some(now);
}
fn loss_percent(&self) -> f64 {
let total = self.packets + self.lost;
if total == 0 {
0.0
} else {
(self.lost as f64 / total as f64) * 100.0
}
}
fn duration(&self) -> Duration {
self.last_seen.duration_since(self.first_seen)
}
fn display_name(&self) -> String {
self.alias
.as_deref()
.map(String::from)
.unwrap_or_else(|| format!("Stream {}", self.stream_id))
}
}
// ---------------------------------------------------------------------------
// Participant identification by sequence stream
// ---------------------------------------------------------------------------
/// Find the participant whose sequence counter is close to `seq`, or create a
/// new one. Each sender has an independent wrapping u16 counter, so we can
/// distinguish streams by proximity of consecutive sequence numbers.
fn find_or_create_participant(
participants: &mut Vec<ParticipantStats>,
seq: u16,
codec: CodecId,
) -> usize {
for (i, p) in participants.iter().enumerate() {
if p.seq_initialized {
let delta = seq.wrapping_sub(p.last_seq);
if delta > 0 && delta < 50 {
return i;
}
}
}
// New stream detected
let id = participants.len();
participants.push(ParticipantStats::new(id, codec));
id
}
// ---------------------------------------------------------------------------
// Capture writer (binary packet log for later replay)
// ---------------------------------------------------------------------------
struct CaptureWriter {
file: std::io::BufWriter<std::fs::File>,
start: Instant,
}
impl CaptureWriter {
fn new(path: &str, room: &str, relay: &str) -> anyhow::Result<Self> {
let file = std::fs::File::create(path)?;
let mut writer = std::io::BufWriter::new(file);
// Magic + version
writer.write_all(b"WZP\x01")?;
let header = serde_json::json!({
"room": room,
"relay": relay,
"start_time": chrono::Utc::now().to_rfc3339(),
"version": 1,
});
let header_bytes = serde_json::to_vec(&header)?;
writer.write_all(&(header_bytes.len() as u32).to_le_bytes())?;
writer.write_all(&header_bytes)?;
Ok(Self {
file: writer,
start: Instant::now(),
})
}
fn write_packet(&mut self, pkt: &MediaPacket, now: Instant) -> anyhow::Result<()> {
let elapsed_us = now.duration_since(self.start).as_micros() as u64;
self.file.write_all(&elapsed_us.to_le_bytes())?;
let raw = pkt.to_bytes();
self.file.write_all(&(raw.len() as u32).to_le_bytes())?;
self.file.write_all(&raw)?;
Ok(())
}
}
// ---------------------------------------------------------------------------
// Capture reader (for replay mode)
// ---------------------------------------------------------------------------
struct CaptureReader {
reader: std::io::BufReader<std::fs::File>,
header: serde_json::Value,
}
impl CaptureReader {
fn open(path: &str) -> anyhow::Result<Self> {
use std::io::Read;
let file = std::fs::File::open(path)?;
let mut reader = std::io::BufReader::new(file);
// Read magic
let mut magic = [0u8; 4];
reader.read_exact(&mut magic)?;
anyhow::ensure!(&magic == b"WZP\x01", "not a WZP capture file");
// Read header
let mut len_buf = [0u8; 4];
reader.read_exact(&mut len_buf)?;
let header_len = u32::from_le_bytes(len_buf) as usize;
let mut header_bytes = vec![0u8; header_len];
reader.read_exact(&mut header_bytes)?;
let header: serde_json::Value = serde_json::from_slice(&header_bytes)?;
Ok(Self { reader, header })
}
fn next_packet(&mut self) -> anyhow::Result<Option<(u64, MediaPacket)>> {
use std::io::Read;
// Read timestamp
let mut ts_buf = [0u8; 8];
match self.reader.read_exact(&mut ts_buf) {
Ok(()) => {}
Err(e) if e.kind() == std::io::ErrorKind::UnexpectedEof => return Ok(None),
Err(e) => return Err(e.into()),
}
let timestamp_us = u64::from_le_bytes(ts_buf);
// Read packet
let mut len_buf = [0u8; 4];
self.reader.read_exact(&mut len_buf)?;
let pkt_len = u32::from_le_bytes(len_buf) as usize;
let mut pkt_bytes = vec![0u8; pkt_len];
self.reader.read_exact(&mut pkt_bytes)?;
let pkt = MediaPacket::from_bytes(bytes::Bytes::from(pkt_bytes))
.ok_or_else(|| anyhow::anyhow!("malformed packet in capture"))?;
Ok(Some((timestamp_us, pkt)))
}
}
// ---------------------------------------------------------------------------
// Timeline entry (for HTML report generation)
// ---------------------------------------------------------------------------
struct TimelineEntry {
timestamp_us: u64,
stream_id: usize,
#[allow(dead_code)]
codec: CodecId,
#[allow(dead_code)]
seq: u16,
#[allow(dead_code)]
payload_len: usize,
loss_pct: f64,
jitter_ms: f64,
}
// ---------------------------------------------------------------------------
// Replay mode (#15)
// ---------------------------------------------------------------------------
async fn run_replay(path: &str, args: &Args) -> anyhow::Result<()> {
let mut reader = CaptureReader::open(path)?;
eprintln!(
"Replaying: {} (room: {})",
path,
reader
.header
.get("room")
.and_then(|v| v.as_str())
.unwrap_or("?")
);
let mut participants: Vec<ParticipantStats> = Vec::new();
let mut total_packets: u64 = 0;
let start = Instant::now();
let mut timeline: Vec<TimelineEntry> = Vec::new();
// Decrypt session from --key (optional)
let mut decrypt_session: Option<wzp_crypto::ChaChaSession> = args.key.as_ref().and_then(|hex| {
if hex.len() != 64 { return None; }
let mut key = [0u8; 32];
for (i, chunk) in hex.as_bytes().chunks(2).enumerate() {
let s = std::str::from_utf8(chunk).unwrap_or("00");
key[i] = u8::from_str_radix(s, 16).unwrap_or(0);
}
Some(wzp_crypto::ChaChaSession::new(key))
});
let mut decrypt_ok: u64 = 0;
let mut decrypt_fail: u64 = 0;
while let Some((ts_us, pkt)) = reader.next_packet()? {
let now = Instant::now();
let idx = find_or_create_participant(&mut participants, pkt.header.seq, pkt.header.codec_id);
participants[idx].ingest(&pkt, now);
total_packets += 1;
// Attempt decryption if key provided
if let Some(ref mut session) = decrypt_session {
use wzp_proto::CryptoSession;
let header_bytes = pkt.header.to_bytes();
let mut plaintext = Vec::new();
match session.decrypt(&header_bytes, &pkt.payload, &mut plaintext) {
Ok(()) => {
decrypt_ok += 1;
if decrypt_ok <= 5 || decrypt_ok % 100 == 0 {
eprintln!(
" decrypt ok: seq={} codec={:?} payload={}B → plaintext={}B",
pkt.header.seq, pkt.header.codec_id,
pkt.payload.len(), plaintext.len()
);
}
}
Err(_) => {
decrypt_fail += 1;
if decrypt_fail <= 3 {
eprintln!(
" decrypt FAIL: seq={} (key mismatch, wrong direction, or rekey boundary)",
pkt.header.seq
);
}
}
}
}
// Record for HTML timeline
timeline.push(TimelineEntry {
timestamp_us: ts_us,
stream_id: idx,
codec: pkt.header.codec_id,
seq: pkt.header.seq,
payload_len: pkt.payload.len(),
loss_pct: participants[idx].loss_percent(),
jitter_ms: participants[idx].jitter_ms,
});
}
if decrypt_session.is_some() {
eprintln!(
"Decrypt stats: {} ok, {} failed (total {})",
decrypt_ok, decrypt_fail, total_packets
);
}
print_summary(&participants, total_packets, start.elapsed());
// Generate HTML if requested
if let Some(html_path) = &args.html {
generate_html_report(html_path, &participants, &timeline, total_packets, &reader.header)?;
eprintln!("HTML report: {}", html_path);
}
Ok(())
}
// ---------------------------------------------------------------------------
// HTML report generation (#16)
// ---------------------------------------------------------------------------
fn generate_html_report(
path: &str,
participants: &[ParticipantStats],
timeline: &[TimelineEntry],
total_packets: u64,
capture_header: &serde_json::Value,
) -> anyhow::Result<()> {
use std::io::Write as _;
let mut f = std::fs::File::create(path)?;
let room = capture_header
.get("room")
.and_then(|v| v.as_str())
.unwrap_or("unknown");
let start_time = capture_header
.get("start_time")
.and_then(|v| v.as_str())
.unwrap_or("?");
// Build per-stream loss/jitter timeline data for Chart.js
// Sample every 1 second (group timeline entries by second)
let max_ts = timeline.last().map(|e| e.timestamp_us).unwrap_or(0);
let duration_secs = (max_ts / 1_000_000) + 1;
let mut loss_data: std::collections::HashMap<usize, Vec<f64>> =
std::collections::HashMap::new();
let mut jitter_data: std::collections::HashMap<usize, Vec<f64>> =
std::collections::HashMap::new();
for stream_id in 0..participants.len() {
loss_data.insert(stream_id, vec![0.0; duration_secs as usize]);
jitter_data.insert(stream_id, vec![0.0; duration_secs as usize]);
}
for entry in timeline {
let sec = (entry.timestamp_us / 1_000_000) as usize;
if sec < duration_secs as usize {
if let Some(losses) = loss_data.get_mut(&entry.stream_id) {
losses[sec] = entry.loss_pct;
}
if let Some(jitters) = jitter_data.get_mut(&entry.stream_id) {
jitters[sec] = entry.jitter_ms;
}
}
}
let colors = [
"#e74c3c", "#3498db", "#2ecc71", "#f39c12", "#9b59b6", "#1abc9c",
];
// Build dataset JSON for charts
let mut loss_datasets = String::new();
let mut jitter_datasets = String::new();
for (i, p) in participants.iter().enumerate() {
let name = p.display_name();
let color = colors[i % colors.len()];
let loss_vals = loss_data
.get(&i)
.map(|v| format!("{:?}", v))
.unwrap_or_default();
let jitter_vals = jitter_data
.get(&i)
.map(|v| format!("{:?}", v))
.unwrap_or_default();
loss_datasets.push_str(&format!(
"{{ label: '{}', data: {}, borderColor: '{}', fill: false }},\n",
name, loss_vals, color
));
jitter_datasets.push_str(&format!(
"{{ label: '{}', data: {}, borderColor: '{}', fill: false }},\n",
name, jitter_vals, color
));
}
let labels: Vec<String> = (0..duration_secs).map(|s| format!("{}s", s)).collect();
let labels_json = format!("{:?}", labels);
// Summary table rows
let mut summary_rows = String::new();
for p in participants {
summary_rows.push_str(&format!(
"<tr><td>{}</td><td>{:?}</td><td>{}</td><td>{:.1}%</td><td>{:.0}ms</td><td>{}</td></tr>\n",
p.display_name(),
p.codec,
p.packets,
p.loss_percent(),
p.jitter_ms,
p.codec_switches
));
}
write!(
f,
r#"<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<title>WZP Call Report — {room}</title>
<script src="https://cdn.jsdelivr.net/npm/chart.js@4"></script>
<style>
body {{ font-family: -apple-system, sans-serif; max-width: 1200px; margin: 0 auto; padding: 20px; background: #1a1a2e; color: #e0e0e0; }}
h1,h2 {{ color: #4a9eff; }}
table {{ border-collapse: collapse; width: 100%; margin: 20px 0; }}
th,td {{ border: 1px solid #333; padding: 8px 12px; text-align: left; }}
th {{ background: #16213e; }}
tr:nth-child(even) {{ background: #1a1a3e; }}
.chart-container {{ background: #16213e; border-radius: 8px; padding: 16px; margin: 20px 0; }}
canvas {{ max-height: 300px; }}
.meta {{ color: #888; font-size: 0.9em; }}
</style>
</head><body>
<h1>WZP Call Quality Report</h1>
<p class="meta">Room: <b>{room}</b> | Start: {start_time} | Packets: {total_packets} | Duration: {duration_secs}s</p>
<h2>Participant Summary</h2>
<table>
<tr><th>Name</th><th>Codec</th><th>Packets</th><th>Loss</th><th>Jitter</th><th>Codec Switches</th></tr>
{summary_rows}
</table>
<h2>Packet Loss Over Time</h2>
<div class="chart-container"><canvas id="lossChart"></canvas></div>
<h2>Jitter Over Time</h2>
<div class="chart-container"><canvas id="jitterChart"></canvas></div>
<script>
const labels = {labels_json};
new Chart(document.getElementById('lossChart'), {{
type: 'line',
data: {{ labels, datasets: [{loss_datasets}] }},
options: {{ responsive: true, scales: {{ y: {{ beginAtZero: true, title: {{ display: true, text: 'Loss %' }} }} }} }}
}});
new Chart(document.getElementById('jitterChart'), {{
type: 'line',
data: {{ labels, datasets: [{jitter_datasets}] }},
options: {{ responsive: true, scales: {{ y: {{ beginAtZero: true, title: {{ display: true, text: 'Jitter (ms)' }} }} }} }}
}});
</script>
</body></html>"#
)?;
Ok(())
}
// ---------------------------------------------------------------------------
// No-TUI mode (print stats to stdout periodically)
// ---------------------------------------------------------------------------
async fn run_no_tui(
transport: &wzp_transport::QuinnTransport,
participants: &mut Vec<ParticipantStats>,
total_packets: &mut u64,
deadline: Option<Instant>,
mut capture_writer: Option<&mut CaptureWriter>,
) -> anyhow::Result<()> {
let mut print_timer = Instant::now();
loop {
if let Some(dl) = deadline {
if Instant::now() > dl {
break;
}
}
match tokio::time::timeout(Duration::from_millis(100), transport.recv_media()).await {
Ok(Ok(Some(pkt))) => {
let now = Instant::now();
let idx =
find_or_create_participant(participants, pkt.header.seq, pkt.header.codec_id);
participants[idx].ingest(&pkt, now);
*total_packets += 1;
if let Some(ref mut w) = capture_writer {
w.write_packet(&pkt, now)?;
}
}
Ok(Ok(None)) => break, // connection closed
Ok(Err(e)) => {
tracing::warn!("recv error: {e}");
break;
}
Err(_) => {} // timeout, loop again
}
if print_timer.elapsed() >= Duration::from_secs(2) {
print_stats(participants, *total_packets);
print_timer = Instant::now();
}
}
Ok(())
}
fn print_stats(participants: &[ParticipantStats], total: u64) {
eprintln!("--- {} participants | {} total packets ---", participants.len(), total);
for p in participants {
eprintln!(
" {}: {} pkts, {:.1}% loss, {:.0}ms jitter, {:?}, {:.0}s",
p.display_name(),
p.packets,
p.loss_percent(),
p.jitter_ms,
p.codec,
p.duration().as_secs_f64(),
);
}
}
// ---------------------------------------------------------------------------
// TUI mode (ratatui + crossterm)
// ---------------------------------------------------------------------------
async fn run_tui(
transport: &wzp_transport::QuinnTransport,
participants: &mut Vec<ParticipantStats>,
total_packets: &mut u64,
start_time: Instant,
deadline: Option<Instant>,
mut capture_writer: Option<&mut CaptureWriter>,
) -> anyhow::Result<()> {
crossterm::terminal::enable_raw_mode()?;
let mut stdout = std::io::stdout();
crossterm::execute!(stdout, crossterm::terminal::EnterAlternateScreen)?;
let backend = ratatui::backend::CrosstermBackend::new(stdout);
let mut terminal = ratatui::Terminal::new(backend)?;
let mut redraw_timer = Instant::now();
let result: anyhow::Result<()> = async {
loop {
// Check for quit key (q or Ctrl+C)
if crossterm::event::poll(Duration::from_millis(0))? {
if let crossterm::event::Event::Key(key) = crossterm::event::read()? {
use crossterm::event::{KeyCode, KeyModifiers};
if key.code == KeyCode::Char('q')
|| (key.code == KeyCode::Char('c')
&& key.modifiers.contains(KeyModifiers::CONTROL))
{
break;
}
}
}
if let Some(dl) = deadline {
if Instant::now() > dl {
break;
}
}
// Receive packets (non-blocking with short timeout)
match tokio::time::timeout(Duration::from_millis(20), transport.recv_media()).await {
Ok(Ok(Some(pkt))) => {
let now = Instant::now();
let idx = find_or_create_participant(
participants,
pkt.header.seq,
pkt.header.codec_id,
);
participants[idx].ingest(&pkt, now);
*total_packets += 1;
if let Some(ref mut w) = capture_writer {
w.write_packet(&pkt, now)?;
}
}
Ok(Ok(None)) => break,
Ok(Err(e)) => {
tracing::warn!("recv error: {e}");
break;
}
Err(_) => {}
}
// Redraw TUI at ~10 FPS
if redraw_timer.elapsed() >= Duration::from_millis(100) {
terminal.draw(|f| draw_ui(f, participants, *total_packets, start_time))?;
redraw_timer = Instant::now();
}
}
Ok(())
}
.await;
// Always restore terminal, even on error
crossterm::terminal::disable_raw_mode()?;
crossterm::execute!(
std::io::stdout(),
crossterm::terminal::LeaveAlternateScreen
)?;
result
}
fn draw_ui(
f: &mut ratatui::Frame,
participants: &[ParticipantStats],
total_packets: u64,
start_time: Instant,
) {
use ratatui::layout::{Constraint, Direction, Layout};
use ratatui::style::{Color, Modifier, Style};
use ratatui::widgets::{Block, Borders, Paragraph, Row, Table};
let elapsed = start_time.elapsed();
let elapsed_str = format!(
"{:02}:{:02}:{:02}",
elapsed.as_secs() / 3600,
(elapsed.as_secs() % 3600) / 60,
elapsed.as_secs() % 60
);
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints([
Constraint::Length(3), // header
Constraint::Min(5), // participant table
Constraint::Length(3), // footer
])
.split(f.area());
// Header
let header = Paragraph::new(format!(
" WZP Analyzer | {} participants | {} packets | {}",
participants.len(),
total_packets,
elapsed_str
))
.block(Block::default().borders(Borders::ALL).title(" Protocol Analyzer "));
f.render_widget(header, chunks[0]);
// Participant table
let header_row = Row::new(vec![
"#", "Name", "Codec", "Packets", "Loss%", "Jitter", "Switches", "Duration",
])
.style(Style::default().add_modifier(Modifier::BOLD));
let rows: Vec<Row> = participants
.iter()
.map(|p| {
let loss_color = if p.loss_percent() > 5.0 {
Color::Red
} else if p.loss_percent() > 1.0 {
Color::Yellow
} else {
Color::Green
};
Row::new(vec![
format!("{}", p.stream_id),
p.display_name(),
format!("{:?}", p.codec),
format!("{}", p.packets),
format!("{:.1}%", p.loss_percent()),
format!("{:.0}ms", p.jitter_ms),
format!("{}", p.codec_switches),
format!("{:.0}s", p.duration().as_secs_f64()),
])
.style(Style::default().fg(loss_color))
})
.collect();
let widths = [
Constraint::Length(3), // #
Constraint::Length(20), // Name
Constraint::Length(12), // Codec
Constraint::Length(10), // Packets
Constraint::Length(8), // Loss%
Constraint::Length(10), // Jitter
Constraint::Length(10), // Switches
Constraint::Length(10), // Duration
];
let table = Table::new(rows, widths)
.header(header_row)
.block(Block::default().borders(Borders::ALL).title(" Participants "));
f.render_widget(table, chunks[1]);
// Footer
let footer =
Paragraph::new(" Press 'q' to quit ").block(Block::default().borders(Borders::ALL));
f.render_widget(footer, chunks[2]);
}
// ---------------------------------------------------------------------------
// Summary (printed on exit)
// ---------------------------------------------------------------------------
fn print_summary(participants: &[ParticipantStats], total: u64, elapsed: Duration) {
eprintln!("\n=== Session Summary ===");
eprintln!(
"Duration: {:.1}s | Total packets: {} | Participants: {}",
elapsed.as_secs_f64(),
total,
participants.len()
);
for p in participants {
eprintln!(
" {}: {} pkts, {:.1}% loss, {:.0}ms jitter, {:?}, {} codec switches",
p.display_name(),
p.packets,
p.loss_percent(),
p.jitter_ms,
p.codec,
p.codec_switches,
);
}
}
// ---------------------------------------------------------------------------
// main
// ---------------------------------------------------------------------------
#[tokio::main]
async fn main() -> anyhow::Result<()> {
let args = Args::parse();
// Only init tracing subscriber in no-tui mode (it would corrupt the TUI otherwise)
if args.no_tui || args.replay.is_some() {
tracing_subscriber::fmt().init();
}
let _crypto_session: Option<std::sync::Mutex<wzp_crypto::ChaChaSession>> =
if let Some(ref key_hex) = args.key {
if key_hex.len() != 64 {
eprintln!("Error: --key must be 64 hex characters (32 bytes). Got {} chars.", key_hex.len());
std::process::exit(1);
}
let mut key_bytes = [0u8; 32];
for (i, chunk) in key_hex.as_bytes().chunks(2).enumerate() {
let hex_str = std::str::from_utf8(chunk).unwrap_or("00");
key_bytes[i] = u8::from_str_radix(hex_str, 16).unwrap_or(0);
}
eprintln!("Encrypted payload decoding enabled (key loaded).");
Some(std::sync::Mutex::new(
wzp_crypto::ChaChaSession::new(key_bytes),
))
} else {
None
};
// Replay mode: offline analysis of a .wzp capture file
if let Some(ref replay_path) = args.replay {
return run_replay(replay_path, &args).await;
}
// Live mode requires relay and room
let relay = args
.relay
.as_deref()
.ok_or_else(|| anyhow::anyhow!("relay address required for live mode (use --replay for offline)"))?;
let room = args
.room
.as_deref()
.ok_or_else(|| anyhow::anyhow!("--room required for live mode (use --replay for offline)"))?;
// TLS crypto provider
let _ = rustls::crypto::ring::default_provider().install_default();
// Identity seed
let seed = match &args.seed {
Some(hex) => {
let s = wzp_crypto::Seed::from_hex(hex).map_err(|e| anyhow::anyhow!(e))?;
info!(fingerprint = %s.derive_identity().public_identity().fingerprint, "identity from --seed");
s
}
None => {
let s = wzp_crypto::Seed::generate();
info!(fingerprint = %s.derive_identity().public_identity().fingerprint, "generated ephemeral identity");
s
}
};
// Connect to relay
let relay_addr: std::net::SocketAddr = relay.parse()?;
let bind_addr: std::net::SocketAddr = if relay_addr.is_ipv6() {
"[::]:0".parse()?
} else {
"0.0.0.0:0".parse()?
};
let endpoint = wzp_transport::create_endpoint(bind_addr, None)?;
let client_config = wzp_transport::client_config();
let conn = wzp_transport::connect(&endpoint, relay_addr, room, client_config).await?;
let transport = Arc::new(wzp_transport::QuinnTransport::new(conn));
// Crypto handshake
let _crypto_session =
wzp_client::handshake::perform_handshake(&*transport, &seed.0, Some("analyzer")).await?;
// Auth if token provided
if let Some(ref token) = args.token {
let auth = wzp_proto::SignalMessage::AuthToken {
token: token.clone(),
};
transport.send_signal(&auth).await?;
}
// Capture file (optional)
let mut capture_writer = args
.capture
.as_ref()
.map(|path| CaptureWriter::new(path, room, relay))
.transpose()?;
// Duration timeout
let deadline = args
.duration
.map(|s| Instant::now() + Duration::from_secs(s));
// State
let mut participants: Vec<ParticipantStats> = Vec::new();
let mut total_packets: u64 = 0;
let start_time = Instant::now();
if args.no_tui {
run_no_tui(
&transport,
&mut participants,
&mut total_packets,
deadline,
capture_writer.as_mut(),
)
.await?;
} else {
run_tui(
&transport,
&mut participants,
&mut total_packets,
start_time,
deadline,
capture_writer.as_mut(),
)
.await?;
}
// Print summary
print_summary(&participants, total_packets, start_time.elapsed());
// Clean close
transport.close().await?;
Ok(())
}