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split ICE setup into its own function

This commit is contained in:
Emmanuel Gil Peyrot 2021-10-23 16:45:25 +02:00 committed by Jasper
parent c920fdf0a5
commit e22cf34f42
1 changed files with 108 additions and 116 deletions
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224
lib-gst-meet/src/jingle.rs
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@ -295,114 +295,7 @@ impl JingleSession {
}))
}
pub(crate) async fn initiate(conference: &JitsiConference, jingle: Jingle) -> Result<Self> {
let initiator = jingle
.initiator
.as_ref()
.ok_or_else(|| anyhow!("session-initiate with no initiator"))?
.clone();
debug!("Received Jingle session-initiate from {}", initiator);
let mut ice_remote_candidates = None;
let mut ice_remote_ufrag = None;
let mut ice_remote_pwd = None;
let mut dtls_fingerprint = None;
let mut opus_payload_type = None;
let mut opus_rtcp_fbs = None;
let mut h264_payload_type = None;
let mut h264_rtx_payload_type = None;
let mut h264_rtcp_fbs = None;
let mut vp8_payload_type = None;
let mut vp8_rtx_payload_type = None;
let mut vp8_rtcp_fbs = None;
let mut vp9_payload_type = None;
let mut vp9_rtx_payload_type = None;
let mut vp9_rtcp_fbs = None;
let mut audio_hdrext_ssrc_audio_level = None;
let mut audio_hdrext_transport_cc = None;
let mut video_hdrext_abs_send_time = None;
let mut video_hdrext_transport_cc = None;
let mut colibri_url = None;
let mut remote_ssrc_map = HashMap::new();
for content in &jingle.contents {
if let Some(Description::Rtp(description)) = &content.description {
if let Some(description) = JingleSession::parse_rtp_description(description, &mut remote_ssrc_map)? {
opus_payload_type = opus_payload_type.or(description.opus_payload_type);
opus_rtcp_fbs = opus_rtcp_fbs.or(description.opus_rtcp_fbs);
h264_payload_type = h264_payload_type.or(description.h264_payload_type);
h264_rtx_payload_type = h264_rtx_payload_type.or(description.h264_rtx_payload_type);
h264_rtcp_fbs = h264_rtcp_fbs.or(description.h264_rtcp_fbs);
vp8_payload_type = vp8_payload_type.or(description.vp8_payload_type);
vp8_rtx_payload_type = vp8_rtx_payload_type.or(description.vp8_rtx_payload_type);
vp8_rtcp_fbs = vp8_rtcp_fbs.or(description.vp8_rtcp_fbs);
vp9_payload_type = vp9_payload_type.or(description.vp9_payload_type);
vp9_rtx_payload_type = vp9_rtx_payload_type.or(description.vp9_rtx_payload_type);
vp9_rtcp_fbs = vp9_rtcp_fbs.or(description.vp9_rtcp_fbs);
audio_hdrext_ssrc_audio_level = audio_hdrext_ssrc_audio_level.or(description.audio_hdrext_ssrc_audio_level);
audio_hdrext_transport_cc = audio_hdrext_transport_cc.or(description.audio_hdrext_transport_cc);
video_hdrext_abs_send_time = video_hdrext_abs_send_time.or(description.video_hdrext_abs_send_time);
video_hdrext_transport_cc = video_hdrext_transport_cc.or(description.video_hdrext_transport_cc);
}
}
if let Some(Transport::IceUdp(transport)) = &content.transport {
if !transport.candidates.is_empty() {
ice_remote_candidates = Some(transport.candidates.clone());
}
if let Some(ufrag) = &transport.ufrag {
ice_remote_ufrag = Some(ufrag.to_owned());
}
if let Some(pwd) = &transport.pwd {
ice_remote_pwd = Some(pwd.to_owned());
}
if let Some(fingerprint) = &transport.fingerprint {
if fingerprint.hash != Algo::Sha_256 {
bail!("unsupported fingerprint hash: {:?}", fingerprint.hash);
}
dtls_fingerprint = Some(fingerprint.value.clone());
}
if let Some(websocket) = &transport.web_socket {
colibri_url = Some(websocket.url.clone());
}
}
}
if let Some(remote_fingerprint) = dtls_fingerprint {
warn!(
"Remote DTLS fingerprint (verification not implemented yet): {:?}",
remote_fingerprint
);
}
let mut dtls_cert_params = CertificateParams::new(vec!["gst-meet".to_owned()]);
dtls_cert_params.alg = &PKCS_ECDSA_P256_SHA256;
let dtls_cert = Certificate::from_params(dtls_cert_params)?;
let dtls_cert_der = dtls_cert.serialize_der()?;
let fingerprint = digest(&SHA256, &dtls_cert_der).as_ref().to_vec();
let fingerprint_str =
itertools::join(fingerprint.iter().map(|byte| format!("{:X}", byte)), ":");
let dtls_cert_pem = pem::encode(&Pem {
tag: "CERTIFICATE".to_string(),
contents: dtls_cert_der,
});
let dtls_private_key_pem = pem::encode(&Pem {
tag: "PRIVATE KEY".to_string(),
contents: dtls_cert.serialize_private_key_der(),
});
debug!("Local DTLS certificate:\n{}", dtls_cert_pem);
debug!("Local DTLS fingerprint: {}", fingerprint_str);
let audio_ssrc: u32 = random();
let video_ssrc: u32 = random();
let video_rtx_ssrc: u32 = random();
debug!("audio SSRC: {}", audio_ssrc);
debug!("video SSRC: {}", video_ssrc);
debug!("video RTX SSRC: {}", video_rtx_ssrc);
async fn setup_ice(conference: &JitsiConference, transport: &IceUdpTransport) -> Result<(nice::Agent, u32, u32)> {
let ice_agent = nice::Agent::new(&conference.glib_main_context, nice::Compatibility::Rfc5245);
ice_agent.set_ice_tcp(false);
ice_agent.set_upnp(false);
@ -474,11 +367,7 @@ impl JingleSession {
debug!("ice_stream_id={}", ice_stream_id);
debug!("ice_component_id={}", ice_component_id);
let (ice_local_ufrag, ice_local_pwd) = ice_agent
.local_credentials(ice_stream_id)
.context("no local ICE credentials")?;
if let (Some(ufrag), Some(pwd)) = (&ice_remote_ufrag, &ice_remote_pwd) {
if let (Some(ufrag), Some(pwd)) = (&transport.ufrag, &transport.pwd) {
debug!("setting ICE remote credentials");
if !ice_agent.set_remote_credentials(ice_stream_id, ufrag, pwd) {
warn!("nice_agent_set_remote_candidates failed");
@ -494,8 +383,8 @@ impl JingleSession {
warn!("nice_agent_gather_candidates failed");
}
if let (Some(ufrag), Some(pwd), Some(remote_candidates)) =
(&ice_remote_ufrag, &ice_remote_pwd, &ice_remote_candidates)
if let (Some(ufrag), Some(pwd), remote_candidates) =
(&transport.ufrag, &transport.pwd, &transport.candidates)
{
debug!("setting ICE remote candidates: {:?}", remote_candidates);
let remote_candidates: Vec<_> = remote_candidates
@ -525,6 +414,109 @@ impl JingleSession {
}
}
Ok((ice_agent, ice_stream_id, ice_component_id))
}
pub(crate) async fn initiate(conference: &JitsiConference, jingle: Jingle) -> Result<Self> {
let initiator = jingle
.initiator
.as_ref()
.ok_or_else(|| anyhow!("session-initiate with no initiator"))?
.clone();
debug!("Received Jingle session-initiate from {}", initiator);
let mut ice_transport = None;
let mut opus_payload_type = None;
let mut opus_rtcp_fbs = None;
let mut h264_payload_type = None;
let mut h264_rtx_payload_type = None;
let mut h264_rtcp_fbs = None;
let mut vp8_payload_type = None;
let mut vp8_rtx_payload_type = None;
let mut vp8_rtcp_fbs = None;
let mut vp9_payload_type = None;
let mut vp9_rtx_payload_type = None;
let mut vp9_rtcp_fbs = None;
let mut audio_hdrext_ssrc_audio_level = None;
let mut audio_hdrext_transport_cc = None;
let mut video_hdrext_abs_send_time = None;
let mut video_hdrext_transport_cc = None;
let mut remote_ssrc_map = HashMap::new();
for content in &jingle.contents {
if let Some(Description::Rtp(description)) = &content.description {
if let Some(description) = JingleSession::parse_rtp_description(description, &mut remote_ssrc_map)? {
opus_payload_type = opus_payload_type.or(description.opus_payload_type);
opus_rtcp_fbs = opus_rtcp_fbs.or(description.opus_rtcp_fbs);
h264_payload_type = h264_payload_type.or(description.h264_payload_type);
h264_rtx_payload_type = h264_rtx_payload_type.or(description.h264_rtx_payload_type);
h264_rtcp_fbs = h264_rtcp_fbs.or(description.h264_rtcp_fbs);
vp8_payload_type = vp8_payload_type.or(description.vp8_payload_type);
vp8_rtx_payload_type = vp8_rtx_payload_type.or(description.vp8_rtx_payload_type);
vp8_rtcp_fbs = vp8_rtcp_fbs.or(description.vp8_rtcp_fbs);
vp9_payload_type = vp9_payload_type.or(description.vp9_payload_type);
vp9_rtx_payload_type = vp9_rtx_payload_type.or(description.vp9_rtx_payload_type);
vp9_rtcp_fbs = vp9_rtcp_fbs.or(description.vp9_rtcp_fbs);
audio_hdrext_ssrc_audio_level = audio_hdrext_ssrc_audio_level.or(description.audio_hdrext_ssrc_audio_level);
audio_hdrext_transport_cc = audio_hdrext_transport_cc.or(description.audio_hdrext_transport_cc);
video_hdrext_abs_send_time = video_hdrext_abs_send_time.or(description.video_hdrext_abs_send_time);
video_hdrext_transport_cc = video_hdrext_transport_cc.or(description.video_hdrext_transport_cc);
}
}
if let Some(Transport::IceUdp(transport)) = &content.transport {
if let Some(fingerprint) = &transport.fingerprint {
if fingerprint.hash != Algo::Sha_256 {
bail!("unsupported fingerprint hash: {:?}", fingerprint.hash);
}
}
ice_transport = Some(transport);
}
}
let ice_transport = ice_transport.context("missing ICE transport")?;
if let Some(remote_fingerprint) = &ice_transport.fingerprint {
warn!(
"Remote DTLS fingerprint (verification not implemented yet): {:?}",
remote_fingerprint
);
}
let mut dtls_cert_params = CertificateParams::new(vec!["gst-meet".to_owned()]);
dtls_cert_params.alg = &PKCS_ECDSA_P256_SHA256;
let dtls_cert = Certificate::from_params(dtls_cert_params)?;
let dtls_cert_der = dtls_cert.serialize_der()?;
let fingerprint = digest(&SHA256, &dtls_cert_der).as_ref().to_vec();
let fingerprint_str =
itertools::join(fingerprint.iter().map(|byte| format!("{:X}", byte)), ":");
let dtls_cert_pem = pem::encode(&Pem {
tag: "CERTIFICATE".to_string(),
contents: dtls_cert_der,
});
let dtls_private_key_pem = pem::encode(&Pem {
tag: "PRIVATE KEY".to_string(),
contents: dtls_cert.serialize_private_key_der(),
});
debug!("Local DTLS certificate:\n{}", dtls_cert_pem);
debug!("Local DTLS fingerprint: {}", fingerprint_str);
let audio_ssrc: u32 = random();
let video_ssrc: u32 = random();
let video_rtx_ssrc: u32 = random();
debug!("audio SSRC: {}", audio_ssrc);
debug!("video SSRC: {}", video_ssrc);
debug!("video RTX SSRC: {}", video_rtx_ssrc);
let (ice_agent, ice_stream_id, ice_component_id) = JingleSession::setup_ice(conference, ice_transport).await?;
let (ice_local_ufrag, ice_local_pwd) = ice_agent
.local_credentials(ice_stream_id)
.context("no local ICE credentials")?;
debug!("building gstreamer pipeline");
let pipeline = gstreamer::Pipeline::new(None);
@ -1352,7 +1344,7 @@ impl JingleSession {
remote_ssrc_map,
_ice_agent: ice_agent,
accept_iq_id: Some(accept_iq_id),
colibri_url,
colibri_url: ice_transport.web_socket.clone().map(|ws| ws.url),
colibri_channel: None,
pipeline_state_null_rx,
})