active_call/call/
sip.rs

1use crate::call::active_call::ActiveCallStateRef;
2use crate::callrecord::CallRecordHangupReason;
3use crate::useragent::invitation::PendingDialog;
4use anyhow::Result;
5use chrono::Utc;
6use rsipstack::dialog::DialogId;
7use rsipstack::dialog::dialog::{
8    Dialog, DialogState, DialogStateReceiver, DialogStateSender, TerminatedReason,
9};
10use rsipstack::dialog::dialog_layer::DialogLayer;
11use rsipstack::dialog::invitation::InviteOption;
12use rsipstack::rsip_ext::RsipResponseExt;
13use std::collections::HashMap;
14use std::sync::Arc;
15use tokio_util::sync::CancellationToken;
16use tracing::{info, warn};
17use voice_engine::event::EventSender;
18use voice_engine::media::TrackId;
19use voice_engine::media::stream::MediaStream;
20
21pub struct DialogStateReceiverGuard {
22    pub(super) dialog_layer: Arc<DialogLayer>,
23    pub(super) receiver: DialogStateReceiver,
24    pub(super) dialog_id: Option<DialogId>,
25}
26
27impl DialogStateReceiverGuard {
28    pub fn new(dialog_layer: Arc<DialogLayer>, receiver: DialogStateReceiver) -> Self {
29        Self {
30            dialog_layer,
31            receiver,
32            dialog_id: None,
33        }
34    }
35    pub async fn recv(&mut self) -> Option<DialogState> {
36        let state = self.receiver.recv().await;
37        if let Some(ref s) = state {
38            self.dialog_id = Some(s.id().clone());
39        }
40        state
41    }
42
43    fn take_dialog(&mut self) -> Option<Dialog> {
44        let id = match self.dialog_id.take() {
45            Some(id) => id,
46            None => return None,
47        };
48
49        match self.dialog_layer.get_dialog(&id) {
50            Some(dialog) => {
51                info!(%id, "dialog removed on  drop");
52                self.dialog_layer.remove_dialog(&id);
53                return Some(dialog);
54            }
55            _ => {}
56        }
57        None
58    }
59
60    pub async fn drop_async(&mut self) {
61        if let Some(dialog) = self.take_dialog() {
62            if let Err(e) = dialog.hangup().await {
63                warn!(id=%dialog.id(), "error hanging up dialog on drop: {}", e);
64            }
65        }
66    }
67}
68
69impl Drop for DialogStateReceiverGuard {
70    fn drop(&mut self) {
71        if let Some(dialog) = self.take_dialog() {
72            tokio::spawn(async move {
73                if let Err(e) = dialog.hangup().await {
74                    warn!(id=%dialog.id(), "error hanging up dialog on drop: {}", e);
75                }
76            });
77        }
78    }
79}
80
81pub(super) struct InviteDialogStates {
82    pub is_client: bool,
83    pub session_id: String,
84    pub track_id: TrackId,
85    pub cancel_token: CancellationToken,
86    pub event_sender: EventSender,
87    pub call_state: ActiveCallStateRef,
88    pub media_stream: Arc<MediaStream>,
89    pub terminated_reason: Option<TerminatedReason>,
90}
91
92impl InviteDialogStates {
93    pub(super) fn on_terminated(&mut self) {
94        let mut call_state_ref = match self.call_state.write() {
95            Ok(cs) => cs,
96            Err(_) => {
97                return;
98            }
99        };
100        let reason = &self.terminated_reason;
101        call_state_ref.last_status_code = match reason {
102            Some(TerminatedReason::UacCancel) => 487,
103            Some(TerminatedReason::UacBye) => 200,
104            Some(TerminatedReason::UacBusy) => 486,
105            Some(TerminatedReason::UasBye) => 200,
106            Some(TerminatedReason::UasBusy) => 486,
107            Some(TerminatedReason::UasDecline) => 603,
108            Some(TerminatedReason::UacOther(code)) => code.code(),
109            Some(TerminatedReason::UasOther(code)) => code.code(),
110            _ => 500, // Default to internal server error
111        };
112
113        if call_state_ref.hangup_reason.is_none() {
114            call_state_ref.hangup_reason.replace(match reason {
115                Some(TerminatedReason::UacCancel) => CallRecordHangupReason::Canceled,
116                Some(TerminatedReason::UacBye) | Some(TerminatedReason::UacBusy) => {
117                    CallRecordHangupReason::ByCaller
118                }
119                Some(TerminatedReason::UasBye) | Some(TerminatedReason::UasBusy) => {
120                    CallRecordHangupReason::ByCallee
121                }
122                Some(TerminatedReason::UasDecline) => CallRecordHangupReason::ByCallee,
123                Some(TerminatedReason::UacOther(_)) => CallRecordHangupReason::ByCaller,
124                Some(TerminatedReason::UasOther(_)) => CallRecordHangupReason::ByCallee,
125                _ => CallRecordHangupReason::BySystem,
126            });
127        };
128        let initiator = match reason {
129            Some(TerminatedReason::UacCancel) => "caller".to_string(),
130            Some(TerminatedReason::UacBye) | Some(TerminatedReason::UacBusy) => {
131                "caller".to_string()
132            }
133            Some(TerminatedReason::UasBye)
134            | Some(TerminatedReason::UasBusy)
135            | Some(TerminatedReason::UasDecline) => "callee".to_string(),
136            _ => "system".to_string(),
137        };
138        self.event_sender
139            .send(voice_engine::event::SessionEvent::TrackEnd {
140                track_id: self.track_id.clone(),
141                timestamp: voice_engine::media::get_timestamp(),
142                duration: call_state_ref
143                    .answer_time
144                    .map(|t| (Utc::now() - t).num_milliseconds())
145                    .unwrap_or_default() as u64,
146                ssrc: call_state_ref.ssrc,
147                play_id: None,
148            })
149            .ok();
150        let hangup_event =
151            call_state_ref.build_hangup_event(self.track_id.clone(), Some(initiator));
152        self.event_sender.send(hangup_event).ok();
153    }
154}
155
156impl Drop for InviteDialogStates {
157    fn drop(&mut self) {
158        self.on_terminated();
159        self.cancel_token.cancel();
160    }
161}
162
163impl DialogStateReceiverGuard {
164    pub(self) async fn dialog_event_loop(&mut self, states: &mut InviteDialogStates) -> Result<()> {
165        while let Some(event) = self.recv().await {
166            match event {
167                DialogState::Calling(dialog_id) => {
168                    info!(session_id=states.session_id, %dialog_id, "dialog calling");
169                    states
170                        .call_state
171                        .as_ref()
172                        .write()
173                        .map(|mut cs| cs.session_id = dialog_id.to_string())
174                        .ok();
175                }
176                DialogState::Trying(_) => {}
177                DialogState::Early(dialog_id, resp) => {
178                    let code = resp.status_code.code();
179                    let body = resp.body();
180                    let answer = String::from_utf8_lossy(body);
181                    info!(session_id=states.session_id, %dialog_id,  "dialog earlyanswer: \n{}", answer);
182
183                    states
184                        .call_state
185                        .as_ref()
186                        .write()
187                        .map(|mut cs| {
188                            if cs.ring_time.is_none() {
189                                cs.ring_time.replace(Utc::now());
190                            }
191                            cs.last_status_code = code;
192                        })
193                        .ok();
194
195                    if !states.is_client {
196                        continue;
197                    }
198
199                    let refer = states
200                        .call_state
201                        .read()
202                        .map(|cs| cs.is_refer)
203                        .unwrap_or(false);
204
205                    states
206                        .event_sender
207                        .send(voice_engine::event::SessionEvent::Ringing {
208                            track_id: states.track_id.clone(),
209                            timestamp: voice_engine::media::get_timestamp(),
210                            early_media: !answer.is_empty(),
211                            refer: Some(refer),
212                        })?;
213
214                    if answer.is_empty() {
215                        continue;
216                    }
217                    states
218                        .media_stream
219                        .update_remote_description(&states.track_id, &answer.to_string())
220                        .await?;
221                }
222                DialogState::Confirmed(dialog_id, _) => {
223                    info!(session_id=states.session_id, %dialog_id, "dialog confirmed");
224                    states
225                        .call_state
226                        .as_ref()
227                        .write()
228                        .map(|mut cs| {
229                            cs.session_id = dialog_id.to_string();
230                            cs.answer_time.replace(Utc::now());
231                            cs.last_status_code = 200;
232                        })
233                        .ok();
234                }
235                DialogState::Info(dialog_id, req) => {
236                    let body_str = String::from_utf8_lossy(req.body());
237                    info!(session_id=states.session_id, %dialog_id, body=%body_str, "dialog info received");
238                    if body_str.starts_with("Signal=") {
239                        let digit = body_str.trim_start_matches("Signal=").chars().next();
240                        if let Some(digit) = digit {
241                            states
242                                .event_sender
243                                .send(voice_engine::event::SessionEvent::Dtmf {
244                                    track_id: states.track_id.clone(),
245                                    timestamp: voice_engine::media::get_timestamp(),
246                                    digit: digit.to_string(),
247                                })?;
248                        }
249                    }
250                }
251                DialogState::Terminated(dialog_id, reason) => {
252                    info!(
253                        session_id = states.session_id,
254                        ?dialog_id,
255                        ?reason,
256                        "dialog terminated"
257                    );
258                    states.terminated_reason = Some(reason.clone());
259                    return Ok(());
260                }
261                other_state => {
262                    info!(
263                        session_id = states.session_id,
264                        %other_state,
265                        "dialog received other state"
266                    );
267                }
268            }
269        }
270        Ok(())
271    }
272
273    pub(super) async fn process_dialog(&mut self, mut states: InviteDialogStates) {
274        let token = states.cancel_token.clone();
275        tokio::select! {
276            _ = token.cancelled() => {
277                states.terminated_reason = Some(TerminatedReason::UacCancel);
278            }
279            _ = self.dialog_event_loop(&mut states) => {}
280        };
281        self.drop_async().await;
282    }
283}
284
285#[derive(Clone)]
286pub struct Invitation {
287    pub dialog_layer: Arc<DialogLayer>,
288    pub pending_dialogs: Arc<std::sync::Mutex<HashMap<String, PendingDialog>>>,
289}
290
291impl Invitation {
292    pub fn new(dialog_layer: Arc<DialogLayer>) -> Self {
293        Self {
294            dialog_layer,
295            pending_dialogs: Arc::new(std::sync::Mutex::new(HashMap::new())),
296        }
297    }
298
299    pub fn add_pending(&self, session_id: String, pending: PendingDialog) {
300        self.pending_dialogs
301            .lock()
302            .map(|mut ps| ps.insert(session_id, pending))
303            .ok();
304    }
305
306    pub fn get_pending_call(&self, session_id: &String) -> Option<PendingDialog> {
307        self.pending_dialogs
308            .lock()
309            .ok()
310            .map(|mut ps| ps.remove(session_id))
311            .flatten()
312    }
313
314    pub fn has_pending_call(&self, session_id: &str) -> Option<DialogId> {
315        self.pending_dialogs
316            .lock()
317            .ok()
318            .map(|ps| ps.get(session_id).map(|d| d.dialog.id()))
319            .flatten()
320    }
321
322    pub async fn hangup(
323        &self,
324        dialog_id: DialogId,
325        code: Option<rsip::StatusCode>,
326        reason: Option<String>,
327    ) -> Result<()> {
328        if let Some(call) = self.get_pending_call(&dialog_id.to_string()) {
329            call.dialog.reject(code, reason).ok();
330            call.token.cancel();
331        }
332        match self.dialog_layer.get_dialog(&dialog_id) {
333            Some(dialog) => {
334                self.dialog_layer.remove_dialog(&dialog_id);
335                dialog.hangup().await.ok();
336            }
337            None => {}
338        }
339        Ok(())
340    }
341
342    pub async fn reject(&self, dialog_id: DialogId) -> Result<()> {
343        if let Some(call) = self.get_pending_call(&dialog_id.to_string()) {
344            call.dialog.reject(None, None).ok();
345            call.token.cancel();
346        }
347        match self.dialog_layer.get_dialog(&dialog_id) {
348            Some(dialog) => {
349                self.dialog_layer.remove_dialog(&dialog_id);
350                dialog.hangup().await.ok();
351            }
352            None => {}
353        }
354        Ok(())
355    }
356
357    pub async fn invite(
358        &self,
359        invite_option: InviteOption,
360        state_sender: DialogStateSender,
361    ) -> Result<(DialogId, Option<Vec<u8>>), rsipstack::Error> {
362        let (dialog, resp) = self
363            .dialog_layer
364            .do_invite(invite_option, state_sender)
365            .await?;
366
367        let offer = match resp {
368            Some(resp) => match resp.status_code.kind() {
369                rsip::StatusCodeKind::Successful => {
370                    let offer = resp.body.clone();
371                    Some(offer)
372                }
373                _ => {
374                    let reason = resp
375                        .reason_phrase()
376                        .unwrap_or(&resp.status_code.to_string())
377                        .to_string();
378                    return Err(rsipstack::Error::DialogError(
379                        reason,
380                        dialog.id(),
381                        resp.status_code,
382                    ));
383                }
384            },
385            None => {
386                return Err(rsipstack::Error::DialogError(
387                    "no response received".to_string(),
388                    dialog.id(),
389                    rsip::StatusCode::NotAcceptableHere,
390                ));
391            }
392        };
393        Ok((dialog.id(), offer))
394    }
395}
active_call/call/sip.rs

active_call/call/
sip.rs
