/// <summary>
/// Gets an ICE candidate for this ICE server once the required server responses have been received.
/// Note the related address and port are deliberately not set to avoid leaking information about
/// internal network configuration.
/// </summary>
/// <param name="init">The initialisation parameters for the ICE candidate (mainly local username).</param>
/// <param name="type">The type of ICE candidate to get, must be srflx or relay.</param>
/// <returns>An ICE candidate that can be sent to the remote peer.</returns>
internal RTCIceCandidate GetCandidate(RTCIceCandidateInit init, RTCIceCandidateType type)
{
RTCIceCandidate candidate = new RTCIceCandidate(init);
if (type == RTCIceCandidateType.srflx && ServerReflexiveEndPoint != null)
{
candidate.SetAddressProperties(RTCIceProtocol.udp, ServerReflexiveEndPoint.Address, (ushort)ServerReflexiveEndPoint.Port,
type, null, 0);
candidate.IceServer = this;
return(candidate);
}
else if (type == RTCIceCandidateType.relay && RelayEndPoint != null)
{
candidate.SetAddressProperties(RTCIceProtocol.udp, RelayEndPoint.Address, (ushort)RelayEndPoint.Port,
type, null, 0);
candidate.IceServer = this;
return(candidate);
}
else
{
logger.LogWarning($"Could not get ICE server candidate for {_uri} and type {type}.");
return(null);
}
}
/// <summary>
/// Convenience constructor for cases when the application wants
/// to create an ICE candidate,
/// </summary>
public RTCIceCandidate(
RTCIceProtocol cProtocol,
IPAddress cAddress,
ushort cPort,
RTCIceCandidateType cType)
{
SetAddressProperties(cProtocol, cAddress, cPort, cType, null, 0);
}
public void SetAddressProperties(
RTCIceProtocol cProtocol,
IPAddress cAddress,
ushort cPort,
RTCIceCandidateType cType,
IPAddress cRelatedAddress,
ushort cRelatedPort)
{
protocol = cProtocol;
address = cAddress.ToString();
port = cPort;
type = cType;
relatedAddress = cRelatedAddress?.ToString();
relatedPort = cRelatedPort;
foundation = GetFoundation();
priority = GetPriority();
}