/// <summary>
/// Gets the first <see cref="System.Net.NetworkInformation.NetworkInterface"/> which has the given address bound.
/// </summary>
/// <param name="localAddress">The address which should be bound to the interface.</param>
/// <returns>The <see cref="System.Net.NetworkInformation.NetworkInterface"/> associated with the address or the default if none were found.</returns>
public static System.Net.NetworkInformation.NetworkInterface GetNetworkInterface(System.Net.IPAddress localAddress)
{
if (localAddress == null)
{
throw new System.ArgumentNullException();
}
bool isMulticast = IPAddressExtensions.IsMulticast(localAddress);
//Iterate all NetworkInterfaves
foreach (System.Net.NetworkInformation.NetworkInterface networkInterface in System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces())
{
//Only look for interfaces which are UP
if (networkInterface.OperationalStatus != System.Net.NetworkInformation.OperationalStatus.Up)
{
continue;
}
if (isMulticast)
{
if (false == networkInterface.SupportsMulticast)
{
continue;
}
//Check for the Multicast Address to be bound on the networkInterface
foreach (System.Net.NetworkInformation.MulticastIPAddressInformation ip in networkInterface.GetIPProperties().MulticastAddresses)
{
//If equal return
if (System.Net.IPAddress.Equals(localAddress, ip.Address))
{
return(networkInterface);
}
}
}
else
{
//Check for the Unicast Address to be bound on the networkInterface
foreach (System.Net.NetworkInformation.UnicastIPAddressInformation ip in networkInterface.GetIPProperties().UnicastAddresses)
{
//If equal return
if (System.Net.IPAddress.Equals(localAddress, ip.Address))
{
return(networkInterface);
}
}
//Check for the Anycast Address to be bound on the networkInterface
//if(s.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6) foreach (System.Net.NetworkInformation.UnicastIPAddressInformation ip in networkInterface.GetIPProperties().AnycastAddresses)
//{
// if (System.Net.IPAddress.Equals(localEndPoint.Address, ip.Address))
// {
// return networkInterface;
// }
//}
}
}
return(default(System.Net.NetworkInformation.NetworkInterface));
}
//Todo, cleanup and allow existing Rtp and Rtcp socket.
/// <summary>
/// Will create a <see cref="RtpClient"/> based on the given parameters
/// </summary>
/// <param name="sessionDescription"></param>
/// <param name="sharedMemory"></param>
/// <param name="incomingEvents"></param>
/// <param name="rtcpEnabled"></param>
/// <returns></returns>
public static RtpClient FromSessionDescription(Sdp.SessionDescription sessionDescription, Common.MemorySegment sharedMemory = null, bool incomingEvents = true, bool rtcpEnabled = true, System.Net.Sockets.Socket existingSocket = null, int?rtpPort = null, int?rtcpPort = null, int remoteSsrc = 0, int minimumSequentialRtpPackets = 2, bool connect = true, System.Action <System.Net.Sockets.Socket> configure = null)
{
if (Common.IDisposedExtensions.IsNullOrDisposed(sessionDescription))
{
throw new System.ArgumentNullException("sessionDescription");
}
Sdp.Lines.SessionConnectionLine connectionLine = new Sdp.Lines.SessionConnectionLine(sessionDescription.ConnectionLine);
System.Net.IPAddress remoteIp = System.Net.IPAddress.Parse(connectionLine.Host), localIp;
System.Net.NetworkInformation.NetworkInterface localInterface;
//If the socket is NOT null and IS BOUND use the localIp of the same address family
if (object.ReferenceEquals(existingSocket, null).Equals(false) && existingSocket.IsBound)
{
//If the socket is IP based
if (existingSocket.LocalEndPoint is System.Net.IPEndPoint)
{
//Take the localIp from the LocalEndPoint
localIp = (existingSocket.LocalEndPoint as System.Net.IPEndPoint).Address;
}
else
{
throw new System.NotSupportedException("Please create an issue for your use case.");
}
}
else // There is no socket existing.
{
//If the remote address is the broadcast address or the remote address is multicast
if (System.Net.IPAddress.Broadcast.Equals(remoteIp) || IPAddressExtensions.IsMulticast(remoteIp))
{
//This interface should be the interface you plan on using for the Rtp communication
localIp = SocketExtensions.GetFirstMulticastIPAddress(remoteIp.AddressFamily, out localInterface);
}
else
{
//This interface should be the interface you plan on using for the Rtp communication
localIp = SocketExtensions.GetFirstUnicastIPAddress(remoteIp.AddressFamily, out localInterface);
}
}
RtpClient client = new RtpClient(sharedMemory, incomingEvents);
byte lastChannel = 0;
//Todo, check for session level ssrc
//if (remoteSsrc.Equals(0))
//{
// //Sdp.SessionDescriptionLine ssrcLine = sessionDescription.SsrcGroupLine; // SsrcLine @ the session level could imply Group
//}
//For each MediaDescription in the SessionDescription
foreach (Media.Sdp.MediaDescription md in sessionDescription.MediaDescriptions)
{
//Make a RtpClient.TransportContext from the MediaDescription being parsed.
TransportContext tc = TransportContext.FromMediaDescription(sessionDescription, lastChannel++, lastChannel++, md,
rtcpEnabled, remoteSsrc, minimumSequentialRtpPackets,
localIp, remoteIp, //The localIp and remoteIp
rtpPort, rtcpPort, //The remote ports to receive data from
connect, existingSocket, configure);
//Try to add the context
try
{
client.AddContext(tc);
}
catch (System.Exception ex)
{
TaggedExceptionExtensions.RaiseTaggedException(tc, "See Tag, Could not add the created TransportContext.", ex);
}
}
//Return the participant
return(client);
}
public static bool IsMulticast(this System.Net.IPEndPoint endPoint)
{
return(IPAddressExtensions.IsMulticast(endPoint.Address));
}
