SIPSorcery.SIP.SIPTransport.GetDefaultTransportContact C# (CSharp) Method

        public SIPEndPoint GetDefaultTransportContact(SIPProtocolsEnum protocol)
        {
            SIPChannel defaultChannel = GetDefaultChannel(protocol);

            if (defaultChannel != null)
            {
                return defaultChannel.SIPChannelEndPoint;
            }
            else
            {
                return null;
            }
        }

            public void B2BOptionsStatefulProxyTest()
            {
                SIPTransactionEngine transactionEngine1 = new SIPTransactionEngine();
                SIPTransport sipTransport1 = new SIPTransport(SIPDNSManager.Resolve, transactionEngine1, true, false);
                sipTransport1.AddSIPChannel(new SIPUDPChannel(new IPEndPoint(IPAddress.Loopback, 3000)));
                SIPAppServerCore appServerCore1 = new SIPAppServerCore(sipTransport1, null, statefulProxyCore1_StatefulProxyLogEvent, null, null, null);

                SIPTransactionEngine transactionEngine2 = new SIPTransactionEngine();
                SIPTransport sipTransport2 = new SIPTransport(SIPDNSManager.Resolve, transactionEngine2, true, false);
                sipTransport2.AddSIPChannel(new SIPUDPChannel(new IPEndPoint(IPAddress.Loopback, 3001)));
                SIPAppServerCore appServerCore2 = new SIPAppServerCore(sipTransport2, null, statefulProxyCore2_StatefulProxyLogEvent, null, null, null);

                sipTransport1.SIPRequestOutTraceEvent += sipTransport1_SIPRequestOutTraceEvent;
                sipTransport1.SIPResponseInTraceEvent += sipTransport1_SIPResponseInTraceEvent;
                sipTransport2.SIPRequestInTraceEvent += sipTransport2_SIPRequestInTraceEvent;

                SIPRequest optionsRequest = GetOptionsRequest(SIPURI.ParseSIPURI("sip:127.0.0.1:3001"), 1, sipTransport1.GetDefaultTransportContact(SIPProtocolsEnum.udp).SocketEndPoint);
                sipTransport1.SendRequest(optionsRequest);

                Thread.Sleep(200);

                // Check the NUnit Console.Out to make sure there are SIP requests and responses being displayed.

                sipTransport1.Shutdown();
                sipTransport2.Shutdown();
            }