3351cb6473
New feature: call someone directly by fingerprint through the relay.
- Client connects with SNI "_signal" for persistent signaling
- RegisterPresence/RegisterPresenceAck for relay registration
- DirectCallOffer routed to target by fingerprint
- DirectCallAnswer with AcceptGeneric/AcceptTrusted/Reject modes
- Relay creates private room (call-{id}), sends CallSetup to both
- Both clients connect to private room for media (existing SFU path)
- Hangup forwarding + cleanup on disconnect
- Desktop CLI: --signal + --call <fingerprint> for testing
- CallRegistry tracks call state (Pending/Ringing/Active/Ended)
- SignalHub manages persistent signaling connections
Tested: Alice calls Bob by fingerprint, relay routes offer, Bob
auto-accepts, both join private room, media flows bidirectionally.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
106 lines
3.0 KiB
Rust
106 lines
3.0 KiB
Rust
//! Persistent signaling connection manager.
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//!
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//! Tracks clients connected via `_signal` SNI. Routes call signals
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//! (DirectCallOffer, DirectCallAnswer, Hangup) between registered users.
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use std::collections::HashMap;
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use std::sync::Arc;
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use std::time::Instant;
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use tracing::{info, warn};
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use wzp_proto::{MediaTransport, SignalMessage};
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use wzp_transport::QuinnTransport;
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/// A client connected via `_signal` for direct calling.
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pub struct SignalClient {
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pub fingerprint: String,
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pub alias: Option<String>,
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pub transport: Arc<QuinnTransport>,
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pub connected_at: Instant,
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}
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/// Manages persistent signaling connections.
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pub struct SignalHub {
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clients: HashMap<String, SignalClient>,
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}
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impl SignalHub {
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pub fn new() -> Self {
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Self {
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clients: HashMap::new(),
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}
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}
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/// Register a new signaling client.
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pub fn register(&mut self, fp: String, transport: Arc<QuinnTransport>, alias: Option<String>) {
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info!(fingerprint = %fp, alias = ?alias, "signal client registered");
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self.clients.insert(fp.clone(), SignalClient {
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fingerprint: fp,
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alias,
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transport,
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connected_at: Instant::now(),
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});
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}
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/// Unregister a signaling client. Returns the client if found.
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pub fn unregister(&mut self, fp: &str) -> Option<SignalClient> {
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let client = self.clients.remove(fp);
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if client.is_some() {
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info!(fingerprint = %fp, "signal client unregistered");
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}
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client
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}
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/// Look up a client by fingerprint.
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pub fn get(&self, fp: &str) -> Option<&SignalClient> {
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self.clients.get(fp)
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}
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/// Check if a fingerprint is online.
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pub fn is_online(&self, fp: &str) -> bool {
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self.clients.contains_key(fp)
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}
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/// Send a signal message to a client by fingerprint.
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pub async fn send_to(&self, fp: &str, msg: &SignalMessage) -> Result<(), String> {
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match self.clients.get(fp) {
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Some(client) => {
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client.transport.send_signal(msg).await
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.map_err(|e| format!("send to {fp}: {e}"))
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}
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None => Err(format!("{fp} not online")),
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}
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}
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/// Number of connected signaling clients.
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pub fn online_count(&self) -> usize {
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self.clients.len()
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}
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/// List all online fingerprints.
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pub fn online_fingerprints(&self) -> Vec<&str> {
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self.clients.keys().map(|s| s.as_str()).collect()
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}
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/// Get alias for a fingerprint.
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pub fn alias(&self, fp: &str) -> Option<&str> {
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self.clients.get(fp).and_then(|c| c.alias.as_deref())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn register_unregister() {
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let mut hub = SignalHub::new();
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assert_eq!(hub.online_count(), 0);
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assert!(!hub.is_online("alice"));
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// Can't easily construct QuinnTransport in a unit test,
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// so we just test the HashMap logic conceptually.
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// Integration tests cover the full flow.
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}
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}
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