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Add createAnswer

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This commit is contained in:
Manish Goregaokar 2019-01-26 22:40:44 -08:00
parent c156289a0c
commit cfc235bad2
2 changed files with 58 additions and 8 deletions
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62
components/script/dom/rtcpeerconnection.rs
View file

@ -7,7 +7,7 @@ use crate::dom::bindings::codegen::Bindings::RTCIceCandidateBinding::RTCIceCandi
use crate::dom::bindings::codegen::Bindings::RTCPeerConnectionBinding;
use crate::dom::bindings::codegen::Bindings::RTCPeerConnectionBinding::RTCPeerConnectionMethods;
use crate::dom::bindings::codegen::Bindings::RTCPeerConnectionBinding::{
RTCConfiguration, RTCOfferOptions,
RTCAnswerOptions, RTCConfiguration, RTCOfferOptions,
};
use crate::dom::bindings::codegen::Bindings::RTCSessionDescriptionBinding::{
RTCSdpType, RTCSessionDescriptionInit,
@ -46,11 +46,13 @@ pub struct RTCPeerConnection {
#[ignore_malloc_size_of = "defined in servo-media"]
controller: DomRefCell<Option<WebRtcController>>,
closed: Cell<bool>,
/// Helps track state changes between the time createOffer
/// Helps track state changes between the time createOffer/createAnswer
/// is called and resolved
offer_generation: Cell<u32>,
offer_answer_generation: Cell<u32>,
#[ignore_malloc_size_of = "promises are hard"]
offer_promises: DomRefCell<Vec<Rc<Promise>>>,
#[ignore_malloc_size_of = "promises are hard"]
answer_promises: DomRefCell<Vec<Rc<Promise>>>,
}
struct RTCSignaller {
@ -95,8 +97,9 @@ impl RTCPeerConnection {
eventtarget: EventTarget::new_inherited(),
controller: DomRefCell::new(None),
closed: Cell::new(false),
offer_generation: Cell::new(0),
offer_answer_generation: Cell::new(0),
offer_promises: DomRefCell::new(vec![]),
answer_promises: DomRefCell::new(vec![]),
}
}
@ -171,7 +174,7 @@ impl RTCPeerConnection {
}
fn create_offer(&self) {
let generation = self.offer_generation.get();
let generation = self.offer_answer_generation.get();
let (task_source, canceller) = self
.global()
.as_window()
@ -183,7 +186,7 @@ impl RTCPeerConnection {
let _ = task_source.queue_with_canceller(
task!(offer_created: move || {
let this = this.root();
if this.offer_generation.get() != generation {
if this.offer_answer_generation.get() != generation {
// the state has changed since we last created the offer,
// create a fresh one
this.create_offer();
@ -200,6 +203,41 @@ impl RTCPeerConnection {
.into(),
);
}
fn create_answer(&self) {
let generation = self.offer_answer_generation.get();
let (task_source, canceller) = self
.global()
.as_window()
.task_manager()
.networking_task_source_with_canceller();
let this = Trusted::new(self);
self.controller
.borrow_mut()
.as_ref()
.unwrap()
.create_answer(
(move |desc: SessionDescription| {
let _ = task_source.queue_with_canceller(
task!(answer_created: move || {
let this = this.root();
if this.offer_answer_generation.get() != generation {
// the state has changed since we last created the offer,
// create a fresh one
this.create_answer();
} else {
let init: RTCSessionDescriptionInit = desc.into();
for promise in this.answer_promises.borrow_mut().drain(..) {
promise.resolve_native(&init);
}
}
}),
&canceller,
);
})
.into(),
);
}
}
impl RTCPeerConnectionMethods for RTCPeerConnection {
@ -259,6 +297,18 @@ impl RTCPeerConnectionMethods for RTCPeerConnection {
self.create_offer();
p
}
/// https://www.w3.org/TR/webrtc/#dom-rtcpeerconnection-createoffer
fn CreateAnswer(&self, _options: &RTCAnswerOptions) -> Rc<Promise> {
let p = Promise::new(&self.global());
if self.closed.get() {
p.reject_error(Error::InvalidState);
return p;
}
self.answer_promises.borrow_mut().push(p.clone());
self.create_answer();
p
}
}
impl From<SessionDescription> for RTCSessionDescriptionInit {

4
components/script/dom/webidls/RTCPeerConnection.webidl
View file

@ -8,7 +8,7 @@
Exposed=Window, Pref="dom.webrtc.enabled"]
interface RTCPeerConnection : EventTarget {
Promise<RTCSessionDescriptionInit> createOffer(optional RTCOfferOptions options);
// Promise<RTCSessionDescriptionInit> createAnswer(optional RTCAnswerOptions options);
Promise<RTCSessionDescriptionInit> createAnswer(optional RTCAnswerOptions options);
// Promise<void> setLocalDescription(RTCSessionDescriptionInit description);
// readonly attribute RTCSessionDescription? localDescription;
// readonly attribute RTCSessionDescription? currentLocalDescription;
@ -85,4 +85,4 @@ dictionary RTCOfferOptions : RTCOfferAnswerOptions {
};
dictionary RTCAnswerOptions : RTCOfferAnswerOptions {
};
};