mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-12-28 21:10:34 +00:00
rtspsrc2: Fix RTCP send/recv in the multicast case
Don't use connect(), since that is incompatible with multicast. Instead, drop received packets that are from senders we do not want. Also set multicast loopback = false so we don't receive RTCP RRs from ourselves and interpret them as RTCP SRs. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1425>
This commit is contained in:
Nirbheek Chauhan
parent
e59f3bbe58
commit
7a1cd675c2
1 changed files with 63 additions and 45 deletions
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@ -849,6 +849,7 @@ impl RtspSrc {
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if let Some(ttl) = ttl {
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let _ = rtp_socket.set_multicast_ttl_v4(*ttl as u32);
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}
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let _ = rtp_socket.set_multicast_loop_v4(false);
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if let Some(rtcp_socket) = &rtcp_socket {
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if let Err(err) =
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rtcp_socket.join_multicast_v4(*addr, Ipv4Addr::UNSPECIFIED)
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@ -857,20 +858,25 @@ impl RtspSrc {
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CAT,
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"Failed to join RTCP multicast address {addr}: {err:?}"
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);
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}
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if let Some(ttl) = ttl {
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let _ = rtcp_socket.set_multicast_ttl_v4(*ttl as u32);
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} else {
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if let Some(ttl) = ttl {
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let _ = rtcp_socket.set_multicast_ttl_v4(*ttl as u32);
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}
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let _ = rtcp_socket.set_multicast_loop_v4(false);
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}
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}
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}
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IpAddr::V6(addr) => {
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rtp_socket.join_multicast_v6(addr, 0)?;
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let _ = rtp_socket.set_multicast_loop_v6(false);
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if let Some(rtcp_socket) = &rtcp_socket {
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if let Err(err) = rtcp_socket.join_multicast_v6(addr, 0) {
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gst::warning!(
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CAT,
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"Failed to join RTCP multicast address {addr}: {err:?}"
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);
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} else {
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let _ = rtcp_socket.set_multicast_loop_v6(false);
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}
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}
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}
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@ -885,16 +891,18 @@ impl RtspSrc {
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rtp_appsrc,
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settings.timeout,
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settings.receive_mtu,
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None,
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)
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.await
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}));
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// Spawn RTCP udp send/recv task
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if let Some(rtcp_socket) = rtcp_socket {
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let rtcp_dest = rtcp_port.and_then(|p| Some(SocketAddr::new(*dest, p)));
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let rtcp_appsrc = self.make_rtcp_appsrc(rtpsession_n, &manager)?;
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self.make_rtcp_appsink(rtpsession_n, &manager, on_rtcp)?;
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state.handles.push(RUNTIME.spawn(async move {
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udp_rtcp_task(&rtcp_socket, rtcp_appsrc, rx).await
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udp_rtcp_task(&rtcp_socket, rtcp_appsrc, rtcp_dest, true, rx).await
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}));
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}
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}
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@ -912,18 +920,18 @@ impl RtspSrc {
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);
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continue;
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};
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if let Some((server_rtp_port, server_rtcp_port)) = server_port {
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let _ = rtp_socket
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.connect(&format!(
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"{}:{server_rtp_port}",
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source.as_ref().expect("Must have source address")
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))
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.await;
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if let (Some(source), Some(port), Some(s)) =
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(source, server_rtcp_port, rtcp_socket.as_ref())
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{
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let _ = s.connect(&format!("{source}:{port}")).await;
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let (rtp_sender_addr, rtcp_sender_addr) = match (source, server_port) {
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(Some(ip), Some((rtp_port, Some(rtcp_port)))) => {
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let ip = ip.parse().unwrap();
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(
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Some(SocketAddr::new(ip, *rtp_port)),
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Some(SocketAddr::new(ip, *rtcp_port)),
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)
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}
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(Some(ip), Some((rtp_port, None))) => {
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(Some(SocketAddr::new(ip.parse().unwrap(), *rtp_port)), None)
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}
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_ => (None, None),
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};
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// Spawn RTP udp receive task
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@ -935,6 +943,7 @@ impl RtspSrc {
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rtp_appsrc,
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settings.timeout,
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settings.receive_mtu,
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rtp_sender_addr,
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)
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.await
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}));
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@ -944,7 +953,8 @@ impl RtspSrc {
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let rtcp_appsrc = self.make_rtcp_appsrc(rtpsession_n, &manager)?;
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self.make_rtcp_appsink(rtpsession_n, &manager, on_rtcp)?;
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state.handles.push(RUNTIME.spawn(async move {
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udp_rtcp_task(&rtcp_socket, rtcp_appsrc, rx).await
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udp_rtcp_task(&rtcp_socket, rtcp_appsrc, rtcp_sender_addr, false, rx)
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.await
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}));
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}
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}
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@ -1860,19 +1870,17 @@ async fn udp_rtp_task(
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appsrc: gst_app::AppSrc,
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timeout: gst::ClockTime,
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receive_mtu: u32,
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sender_addr: Option<SocketAddr>,
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) {
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let t = Duration::from_secs(timeout.into());
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let addr = match socket.peer_addr() {
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Ok(addr) => addr,
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// We would not be connected if the server didn't give us a Transport header or its
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// Transport header didn't specify the server port, so we don't know the sender port from
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// which we will get data till we get the first packet here.
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Err(_) => {
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let sender_addr = match sender_addr {
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Some(addr) => addr,
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// Server didn't give us a Transport header or its Transport header didn't specify the
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// server port, so we don't know the sender port from which we will get data till we get
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// the first packet here.
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None => {
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let ret = match time::timeout(t, socket.peek_sender()).await {
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Ok(Ok(addr)) => {
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let _ = socket.connect(addr).await;
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Ok(addr)
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}
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Ok(Ok(addr)) => Ok(addr),
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Ok(Err(_elapsed)) => Err(format!(
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"No data after {} seconds, exiting",
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timeout.seconds()
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@ -1893,9 +1901,10 @@ async fn udp_rtp_task(
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}
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}
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};
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gst::info!(CAT, "Receiving from address {sender_addr:?}");
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let gio_addr = {
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let inet_addr: gio::InetAddress = addr.ip().into();
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gio::InetSocketAddress::new(&inet_addr, addr.port())
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let inet_addr: gio::InetAddress = sender_addr.ip().into();
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gio::InetSocketAddress::new(&inet_addr, sender_addr.port())
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};
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let mut size = receive_mtu;
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let caps = appsrc.caps();
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@ -1911,8 +1920,12 @@ async fn udp_rtp_task(
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let Ok(mut map) = buffer.into_mapped_buffer_writable() else {
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break "Failed to map buffer writable".to_string();
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};
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match time::timeout(t, socket.recv(map.as_mut_slice())).await {
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Ok(Ok(len)) => {
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match time::timeout(t, socket.recv_from(map.as_mut_slice())).await {
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Ok(Ok((len, addr))) => {
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// Ignore packets from the wrong sender
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if addr != sender_addr {
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continue;
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}
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if size < UDP_PACKET_MAX_SIZE && len == size as usize {
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gst::warning!(
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CAT,
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@ -1936,6 +1949,7 @@ async fn udp_rtp_task(
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bufref.set_size(len);
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bufref.set_dts(t);
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gst_net::NetAddressMeta::add(bufref, &gio_addr);
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gst::trace!(CAT, "received RTP packet from {addr:?}");
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if let Err(err) = appsrc.push_buffer(buffer) {
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break format!("UDP buffer push failed: {err:?}");
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}
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@ -1957,27 +1971,27 @@ async fn udp_rtp_task(
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async fn udp_rtcp_task(
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socket: &UdpSocket,
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appsrc: gst_app::AppSrc,
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mut sender_addr: Option<SocketAddr>,
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is_multicast: bool,
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mut rx: mpsc::Receiver<MappedBuffer<Readable>>,
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) {
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// The socket might not be connected if the server either didn't specify a server_port for
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// RTCP, or if the server didn't send a Transport header in the SETUP response at all.
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// In that case, we will connect when we get an RTCP packet.
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let mut is_connected = socket.peer_addr().is_ok();
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let mut buf = vec![0; UDP_PACKET_MAX_SIZE as usize];
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let mut cache: LruCache<_, _> = LruCache::new(NonZeroUsize::new(RTCP_ADDR_CACHE_SIZE).unwrap());
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let error = loop {
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tokio::select! {
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send_rtcp = rx.recv() => match send_rtcp {
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Some(data) => match socket.send(data.as_ref()).await {
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Ok(_) => gst::debug!(CAT, "Sent RTCP RR"),
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Err(err) => {
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if !is_connected {
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gst::warning!(CAT, "Can't send RTCP yet: don't have dest addr");
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} else {
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// The server either didn't specify a server_port for RTCP, or if the server didn't
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// send a Transport header in the SETUP response at all.
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Some(data) => if let Some(addr) = sender_addr.as_ref() {
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match socket.send_to(data.as_ref(), addr).await {
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Ok(_) => gst::debug!(CAT, "Sent RTCP RR packet"),
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Err(err) => {
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rx.close();
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break format!("RTCP send error: {err:?}, stopping task");
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}
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}
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} else {
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gst::warning!(CAT, "Can't send RTCP yet: don't have dest addr");
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},
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None => {
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rx.close();
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@ -1986,11 +2000,15 @@ async fn udp_rtcp_task(
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},
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recv_rtcp = socket.recv_from(&mut buf) => match recv_rtcp {
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Ok((len, addr)) => {
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gst::debug!(CAT, "Received RTCP SR");
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if !is_connected {
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gst::info!(CAT, "Delayed RTCP UDP connect to {addr:?}");
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let _ = socket.connect(addr).await;
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is_connected = true;
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gst::debug!(CAT, "Received RTCP packet");
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if let Some(sender_addr) = sender_addr {
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// Ignore RTCP from the wrong sender
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if !is_multicast && addr != sender_addr {
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continue;
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}
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} else {
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sender_addr.replace(addr);
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gst::info!(CAT, "Delayed RTCP UDP send address: {addr:?}");
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};
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let t = appsrc.current_running_time();
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let mut buffer = gst::Buffer::from_slice(buf[..len].to_owned());
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