/// <summary>
/// Creates a SIP channel to listen for and send SIP messages over UDP.
/// </summary>
/// <param name="endPoint">The IP end point to listen on and send from.</param>
/// <param name="useDualMode">If true then IPv6 sockets will be created as dual mode IPv4/IPv6 on supporting systems.</param>
public SIPUDPChannel(IPEndPoint endPoint, bool useDualMode = false) : base()
{
if (endPoint == null)
{
throw new ArgumentNullException("endPoint", "The end point must be specified when creating a SIPUDPChannel.");
}
ListeningIPAddress = endPoint.Address;
Port = endPoint.Port;
SIPProtocol = SIPProtocolsEnum.udp;
IsReliable = false;
m_cts = new CancellationTokenSource();
m_udpSocket = NetServices.CreateBoundUdpSocket(endPoint.Port, endPoint.Address, false, useDualMode);
if (endPoint.Port == 0)
{
Port = (m_udpSocket.LocalEndPoint as IPEndPoint).Port;
}
m_recvBuffer = new byte[SIPConstants.SIP_MAXIMUM_RECEIVE_LENGTH];
logger.LogInformation($"SIP UDP Channel created for {ListeningEndPoint}.");
Receive();
Task.Factory.StartNew(ExpireFailedSends, TaskCreationOptions.LongRunning);
}
public void CheckFailsOnDuplicateForIP6AnyThenIPv4AnyUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
if (Socket.OSSupportsIPv6 && NetServices.SupportsDualModeIPv4PacketInfo)
{
Socket rtpSocket = null;
Socket controlSocket = null;
NetServices.CreateRtpSocket(true, IPAddress.IPv6Any, out rtpSocket, out controlSocket);
Assert.NotNull(rtpSocket);
Assert.NotNull(controlSocket);
Assert.Throws <ApplicationException>(() => NetServices.CreateBoundUdpSocket((rtpSocket.LocalEndPoint as IPEndPoint).Port, IPAddress.Any));
rtpSocket.Close();
controlSocket.Close();
}
else
{
logger.LogDebug("Test skipped as IPv6 dual mode sockets are not in use on this OS.");
}
}
public STUNServer(IPEndPoint primaryEndPoint, STUNSendMessageDelegate primarySend, IPEndPoint secondaryEndPoint, STUNSendMessageDelegate secondarySend)
{
m_primaryEndPoint = primaryEndPoint;
m_primarySend = primarySend;
m_secondaryEndPoint = secondaryEndPoint;
m_secondarySend = secondarySend;
//m_primaryDiffPortSocket = NetServices.CreateRandomUDPListener(m_primaryEndPoint.Address, out m_primaryDiffPortEndPoint);
//m_secondaryDiffPortSocket = NetServices.CreateRandomUDPListener(m_secondaryEndPoint.Address, out m_secondaryDiffPortEndPoint);
m_primaryDiffPortSocket = new UdpClient();
m_primaryDiffPortSocket.Client = NetServices.CreateBoundUdpSocket(0, m_primaryEndPoint.Address);
m_primaryDiffPortEndPoint = m_primaryDiffPortSocket.Client.LocalEndPoint as IPEndPoint;
m_secondaryDiffPortSocket = new UdpClient();
m_secondaryDiffPortSocket.Client = NetServices.CreateBoundUdpSocket(0, m_primaryEndPoint.Address);
m_secondaryDiffPortEndPoint = m_secondaryDiffPortSocket.Client.LocalEndPoint as IPEndPoint;
logger.LogDebug("STUN Server additional sockets, primary=" + IPSocket.GetSocketString(m_primaryDiffPortEndPoint) + ", secondary=" + IPSocket.GetSocketString(m_secondaryDiffPortEndPoint) + ".");
}