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|
use log::info;
use std::sync::Arc;
use webrtc::{
data_channel::data_channel_message::DataChannelMessage,
ice_transport::{ice_candidate::RTCIceCandidate, ice_server::RTCIceServer},
peer_connection::{
configuration::RTCConfiguration, peer_connection_state::RTCPeerConnectionState,
sdp::session_description::RTCSessionDescription, RTCPeerConnection,
},
};
use crate::{
protocol::{self, RTCSessionDescriptionInit, RelayMessage},
state::State,
};
pub struct Peer {
state: Arc<State>, // maybe use Weak later
peer_connection: RTCPeerConnection,
id: usize,
}
impl Peer {
pub async fn create(state: Arc<State>, id: usize) -> Arc<Self> {
info!("({id}) peer joined");
let config = RTCConfiguration {
ice_servers: vec![RTCIceServer {
urls: vec!["stun:metamuffin.org:16900".to_owned()],
..Default::default()
}],
..Default::default()
};
let peer_connection = state.api.new_peer_connection(config).await.unwrap();
let peer = Arc::new(Self {
peer_connection,
id,
state: state.clone(),
});
peer.peer_connection
.on_peer_connection_state_change(Box::new(move |s: RTCPeerConnectionState| {
println!("conn state: {s}");
Box::pin(async {})
}))
.await;
{
let peer2 = peer.clone();
peer.peer_connection
.on_ice_candidate(box move |c| {
let peer = peer2.clone();
Box::pin(async move {
if let Some(c) = c {
peer.on_ice_candidate(c).await
}
})
})
.await;
}
{
let peer2 = peer.clone();
peer.peer_connection
.on_negotiation_needed(box move || {
let peer = peer2.clone();
Box::pin(async { peer.on_negotiation_needed().await })
})
.await;
}
{
peer.peer_connection
.on_data_channel(box move |dc| {
Box::pin(async move {
dc.on_message(box move |message| {
Box::pin(async move { println!("{:?}", message.data) })
})
.await
})
})
.await;
}
// if let Action::Send { .. } = &peer.state.args.action {
// peer.start_transfer().await
// }
peer
}
pub async fn send_relay(&self, inner: RelayMessage) {
self.state.send_relay(self.id, inner).await
}
pub async fn start_transfer(&self) {
info!("starting data channel");
let data_channel = self
.peer_connection
.create_data_channel("file-transfer", None)
.await
.unwrap();
data_channel
.on_message(Box::new(move |msg: DataChannelMessage| {
let msg_str = String::from_utf8(msg.data.to_vec()).unwrap();
println!("message! '{}'", msg_str);
Box::pin(async {})
}))
.await;
{
let dc2 = data_channel.clone();
data_channel
.on_open(box move || {
let data_channel = dc2.clone();
Box::pin(async move {
loop {
data_channel
.send(&bytes::Bytes::from_static(b"test\n"))
.await
.unwrap();
}
})
})
.await;
}
}
pub async fn on_relay(&self, p: RelayMessage) {
match p {
protocol::RelayMessage::Offer(o) => self.on_offer(o).await,
protocol::RelayMessage::Answer(a) => self.on_answer(a).await,
protocol::RelayMessage::IceCandidate(c) => {
info!("received ICE candidate");
self.peer_connection.add_ice_candidate(c).await.unwrap();
}
}
}
pub async fn on_ice_candidate(&self, candidate: RTCIceCandidate) {
self.send_relay(RelayMessage::IceCandidate(
candidate.to_json().await.unwrap(),
))
.await;
}
pub async fn on_negotiation_needed(self: Arc<Self>) {
info!("({}) negotiation needed", self.id);
self.offer().await
}
pub async fn offer(&self) {
info!("sending offer");
let offer = self.peer_connection.create_offer(None).await.unwrap();
self.peer_connection
.set_local_description(offer.clone())
.await
.unwrap();
self.send_relay(protocol::RelayMessage::Offer(RTCSessionDescriptionInit {
sdp: offer.sdp,
ty: offer.sdp_type,
}))
.await
}
pub async fn on_offer(&self, offer: RTCSessionDescriptionInit) {
info!("received offer");
let offer = RTCSessionDescription::offer(offer.sdp).unwrap();
self.peer_connection
.set_remote_description(offer)
.await
.unwrap();
self.answer().await
}
pub async fn answer(&self) {
info!("sending answer");
let offer = self.peer_connection.create_answer(None).await.unwrap();
self.peer_connection
.set_local_description(offer.clone())
.await
.unwrap();
self.send_relay(protocol::RelayMessage::Answer(RTCSessionDescriptionInit {
sdp: offer.sdp,
ty: offer.sdp_type,
}))
.await
}
pub async fn on_answer(&self, answer: RTCSessionDescriptionInit) {
info!("received answer");
let offer = RTCSessionDescription::answer(answer.sdp).unwrap();
self.peer_connection
.set_remote_description(offer)
.await
.unwrap();
}
}
|
