/// <summary>
/// Generates the SDP for an offer that can be made to a remote peer.
/// </summary>
public override async Task <SDP> createOffer(RTCOfferOptions options)
{
try
{
var offerSdp = await createBaseSdp().ConfigureAwait(false);
if (offerSdp.Media.Any(x => x.Media == SDPMediaTypesEnum.audio))
{
var audioAnnouncement = offerSdp.Media.Where(x => x.Media == SDPMediaTypesEnum.audio).Single();
audioAnnouncement.AddExtra(SETUP_OFFER_ATTRIBUTE);
}
if (offerSdp.Media.Any(x => x.Media == SDPMediaTypesEnum.video))
{
var videoAnnouncement = offerSdp.Media.Where(x => x.Media == SDPMediaTypesEnum.video).Single();
videoAnnouncement.AddExtra(SETUP_OFFER_ATTRIBUTE);
}
return(offerSdp);
}
catch (Exception excp)
{
logger.LogError("Exception createOffer. " + excp);
throw;
}
}
/// <summary>
/// Generates the SDP for an offer that can be made to a remote peer.
/// </summary>
/// <remarks>
/// As specified in https://www.w3.org/TR/webrtc/#dom-rtcpeerconnection-createoffer.
/// </remarks>
/// <param name="options">Optional. If supplied the options will be sued to apply additional
/// controls over the generated offer SDP.</param>
public RTCSessionDescriptionInit createOffer(RTCOfferOptions options)
{
try
{
var audioCapabilities = AudioLocalTrack?.Capabilities;
var videoCapabilities = VideoLocalTrack?.Capabilities;
List <MediaStreamTrack> localTracks = GetLocalTracks();
var offerSdp = createBaseSdp(localTracks, audioCapabilities, videoCapabilities);
if (offerSdp.Media.Any(x => x.Media == SDPMediaTypesEnum.audio))
{
var audioAnnouncement = offerSdp.Media.Where(x => x.Media == SDPMediaTypesEnum.audio).Single();
audioAnnouncement.AddExtra($"{ICE_SETUP_ATTRIBUTE}{IceRole}");
}
if (offerSdp.Media.Any(x => x.Media == SDPMediaTypesEnum.video))
{
var videoAnnouncement = offerSdp.Media.Where(x => x.Media == SDPMediaTypesEnum.video).Single();
videoAnnouncement.AddExtra($"{ICE_SETUP_ATTRIBUTE}{IceRole}");
}
RTCSessionDescriptionInit initDescription = new RTCSessionDescriptionInit
{
type = RTCSdpType.offer,
sdp = offerSdp.ToString()
};
return(initDescription);
}
catch (Exception excp)
{
logger.LogError("Exception createOffer. " + excp);
throw;
}
}