Example #1
0
            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();
            }
Example #2
0
            public void B2BInviteTransactionStatefulProxyTest()
            {
                SIPTransactionEngine transactionEngine1    = new SIPTransactionEngine();
                SIPTransport         sipTransport1         = new SIPTransport(SIPDNSManager.Resolve, transactionEngine1, true, false);
                IPEndPoint           sipTransport1EndPoint = new IPEndPoint(IPAddress.Loopback, 3000);

                sipTransport1.AddSIPChannel(new SIPUDPChannel(sipTransport1EndPoint));
                SIPAppServerCore statefulProxyCore1 = new SIPAppServerCore(sipTransport1, null, statefulProxyCore1_StatefulProxyLogEvent, null, null, null);

                SIPTransactionEngine transactionEngine2    = new SIPTransactionEngine();
                SIPTransport         sipTransport2         = new SIPTransport(SIPDNSManager.Resolve, transactionEngine2, true, false);
                IPEndPoint           sipTransport2EndPoint = new IPEndPoint(IPAddress.Loopback, 3001);

                sipTransport2.AddSIPChannel(new SIPUDPChannel(sipTransport2EndPoint));
                SIPAppServerCore statefulProxyCore2 = new SIPAppServerCore(sipTransport2, statefulProxyCore2_GetCanonicalDomain, statefulProxyCore2_StatefulProxyLogEvent, null, null, null);

                sipTransport1.SIPRequestOutTraceEvent  += sipTransport1_SIPRequestOutTraceEvent;
                sipTransport1.SIPResponseInTraceEvent  += sipTransport1_SIPResponseInTraceEvent;
                sipTransport2.SIPRequestInTraceEvent   += sipTransport2_SIPRequestInTraceEvent;
                sipTransport2.SIPResponseOutTraceEvent += sipTransport2_SIPResponseOutTraceEvent;

                SIPRequest           inviteRequest = GetInviteRequest(sipTransport1EndPoint, null, sipTransport2EndPoint);
                UACInviteTransaction uacInvite     = sipTransport1.CreateUACTransaction(inviteRequest, new SIPEndPoint(SIPProtocolsEnum.udp, sipTransport2EndPoint), new SIPEndPoint(SIPProtocolsEnum.udp, sipTransport1EndPoint), null);

                uacInvite.SendInviteRequest(new SIPEndPoint(SIPProtocolsEnum.udp, sipTransport2EndPoint), inviteRequest);

                Thread.Sleep(200);

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

                sipTransport1.Shutdown();
                sipTransport2.Shutdown();
            }
        public void MatchOnRequestAndResponseTest()
        {
            SIPTransactionEngine transactionEngine = new SIPTransactionEngine();
            SIPEndPoint          dummySIPEndPoint  = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 1234));

            SIPRequest inviteRequest = SIPRequest.ParseSIPRequest("INVITE sip:dummy@udp:127.0.0.1:12014 SIP/2.0" + m_CRLF +
                                                                  "Via: SIP/2.0/UDP 127.0.0.1:1234;branch=z9hG4bK5f37455955ca433a902f8fea0ce2dc27" + m_CRLF +
                                                                  "To: <sip:dummy@udp:127.0.0.1:12014>" + m_CRLF +
                                                                  "From: <sip:[email protected]>;tag=2062917371" + m_CRLF +
                                                                  "Call-ID: 8ae45c15425040179a4285d774ccbaf6" + m_CRLF +
                                                                  "CSeq: 1 INVITE" + m_CRLF +
                                                                  "Contact: <sip:127.0.0.1:1234>" + m_CRLF +
                                                                  "Max-Forwards: 70" + m_CRLF +
                                                                  "User-Agent: unittest" + m_CRLF +
                                                                  "Content-Length: 5" + m_CRLF +
                                                                  "Content-Type: application/sdp" + m_CRLF +
                                                                  m_CRLF +
                                                                  "dummy");

            SIPTransaction transaction = new UACInviteTransaction(new SIPTransport(MockSIPDNSManager.Resolve, null), inviteRequest, dummySIPEndPoint, dummySIPEndPoint, null);

            transactionEngine.AddTransaction(transaction);

            SIPResponse sipResponse = SIPResponse.ParseSIPResponse("SIP/2.0 603 Nothing listening" + m_CRLF +
                                                                   "Via: SIP/2.0/UDP 127.0.0.1:1234;branch=z9hG4bK5f37455955ca433a902f8fea0ce2dc27;rport=12013" + m_CRLF +
                                                                   "To: <sip:dummy@udp:127.0.0.1:12014>" + m_CRLF +
                                                                   "From: <sip:[email protected]>;tag=2062917371" + m_CRLF +
                                                                   "Call-ID: 8ae45c15425040179a4285d774ccbaf6" + m_CRLF +
                                                                   "CSeq: 1 INVITE" + m_CRLF +
                                                                   "Content-Length: 0" + m_CRLF +
                                                                   m_CRLF);

            Assert.IsNotNull(transactionEngine.GetTransaction(sipResponse), "Transaction should have matched, check the hashing mechanism.");
        }
Example #4
0
            public void CreateStatefulProxyTest()
            {
                SIPTransactionEngine transactionEngine = new SIPTransactionEngine();
                SIPTransport         sipTransport      = new SIPTransport(SIPDNSManager.Resolve, transactionEngine, new SIPUDPChannel(new IPEndPoint(IPAddress.Loopback, 3000)), false, false);
                SIPAppServerCore     appServerCore     = new SIPAppServerCore(sipTransport, null, null, null, null, null);

                sipTransport.Shutdown();
            }
        public void AckRecognitionUnitTest()
        {
            SIPTransport clientTransport = null;
            SIPTransport serverTransport = null;

            try
            {
                SIPTransactionEngine clientEngine   = new SIPTransactionEngine();   // Client side of the INVITE.
                SIPEndPoint          clientEndPoint = new SIPEndPoint(SIPProtocolsEnum.udp, new IPEndPoint(IPAddress.Loopback, 12013));
                clientTransport = new SIPTransport(MockSIPDNSManager.Resolve, clientEngine, new SIPUDPChannel(clientEndPoint.GetIPEndPoint()), false);
                SetTransportTraceEvents(clientTransport);

                SIPTransactionEngine serverEngine      = new SIPTransactionEngine(); // Server side of the INVITE.
                UASInviteTransaction serverTransaction = null;
                SIPEndPoint          serverEndPoint    = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 12014));
                serverTransport = new SIPTransport(MockSIPDNSManager.Resolve, serverEngine, new SIPUDPChannel(serverEndPoint.GetIPEndPoint()), false);
                SetTransportTraceEvents(serverTransport);
                serverTransport.SIPTransportRequestReceived += (localEndPoint, remoteEndPoint, sipRequest) =>
                {
                    Console.WriteLine("Server Transport Request In: " + sipRequest.Method + ".");
                    serverTransaction = serverTransport.CreateUASTransaction(sipRequest, remoteEndPoint, localEndPoint, null);
                    SetTransactionTraceEvents(serverTransaction);
                    serverTransaction.GotRequest(localEndPoint, remoteEndPoint, sipRequest);
                };

                SIPURI     dummyURI      = SIPURI.ParseSIPURI("sip:dummy@" + serverEndPoint);
                SIPRequest inviteRequest = GetDummyINVITERequest(dummyURI);
                inviteRequest.LocalSIPEndPoint = clientTransport.GetDefaultTransportContact(SIPProtocolsEnum.udp);

                // Send the invite to the server side.
                UACInviteTransaction clientTransaction = new UACInviteTransaction(clientTransport, inviteRequest, serverEndPoint, clientEndPoint, null);
                SetTransactionTraceEvents(clientTransaction);
                clientEngine.AddTransaction(clientTransaction);
                clientTransaction.SendInviteRequest(serverEndPoint, inviteRequest);

                Thread.Sleep(500);

                Assert.IsTrue(clientTransaction.TransactionState == SIPTransactionStatesEnum.Completed, "Client transaction in incorrect state.");
                Assert.IsTrue(serverTransaction.TransactionState == SIPTransactionStatesEnum.Confirmed, "Server transaction in incorrect state.");
            }
            finally
            {
                if (clientTransport != null)
                {
                    clientTransport.Shutdown();
                }

                if (serverTransport != null)
                {
                    serverTransport.Shutdown();
                }
            }
        }
        public void CreateTransactionUnitTest()
        {
            logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
            logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);

            string sipRequestStr =
                "INVITE sip:[email protected];switchtag=902888 SIP/2.0" + m_CRLF +
                "Record-Route: <sip:2.3.4.5;ftag=9307C640-33C;lr=on>" + m_CRLF +
                "Via: SIP/2.0/UDP  5.6.7.2:5060" + m_CRLF +
                "Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bKa7ac.2bfad091.0" + m_CRLF +
                "From: \"unknown\" <sip:00.000.00.0>;tag=9307C640-33C" + m_CRLF +
                "To: <sip:[email protected]>" + m_CRLF +
                "Date: Thu, 21 Feb 2008 01:46:30 GMT" + m_CRLF +
                "Call-ID: A8706191-DF5511DC-B886ED7B-395C3F7E" + m_CRLF +
                "Supported: timer,100rel" + m_CRLF +
                "Min-SE:  1800" + m_CRLF +
                "Cisco-Guid: 2825897321-3746894300-3095653755-962346878" + m_CRLF +
                "User-Agent: Cisco-SIPGateway/IOS-12.x" + m_CRLF +
                "Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO" + m_CRLF +
                "CSeq: 101 INVITE" + m_CRLF +
                "Max-Forwards: 5" + m_CRLF +
                "Timestamp: 1203558390" + m_CRLF +
                "Contact: <sip:1.2.3.4:5060>" + m_CRLF +
                "Expires: 180" + m_CRLF +
                "Allow-Events: telephone-event" + m_CRLF +
                "Content-Type: application/sdp" + m_CRLF +
                "Content-Length: 370" + m_CRLF +
                m_CRLF +
                "v=0" + m_CRLF +
                "o=CiscoSystemsSIP-GW-UserAgent 9312 7567 IN IP4 00.00.00.0" + m_CRLF +
                "s=SIP Call" + m_CRLF +
                "c=IN IP4 00.000.00.0" + m_CRLF +
                "t=0 0" + m_CRLF +
                "m=audio 16434 RTP/AVP 8 0 4 18 3 101" + m_CRLF +
                "c=IN IP4 00.000.00.0" + m_CRLF +
                "a=rtpmap:8 PCMA/8000" + m_CRLF +
                "a=rtpmap:0 PCMU/8000" + m_CRLF +
                "a=rtpmap:4 G723/8000" + m_CRLF +
                "a=fmtp:4 annexa=no" + m_CRLF +
                "a=rtpmap:18 G729/8000" + m_CRLF +
                "a=fmtp:18 annexb=no" + m_CRLF +
                "a=rtpmap:3 GSM/8000" + m_CRLF +
                "a=rtpmap:101 telepho";

            SIPRequest           request           = SIPRequest.ParseSIPRequest(sipRequestStr);
            SIPTransport         sipTransport      = new SIPTransport(false, SIPSorcery.UnitTests.MockSIPDNSManager.Resolve);
            SIPTransactionEngine transactionEngine = sipTransport.m_transactionEngine;
            SIPEndPoint          dummySIPEndPoint  = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 1234));
            SIPTransaction       transaction       = new UACInviteTransaction(sipTransport, request, null);

            Assert.True(transaction.TransactionRequest.URI.ToString() == "sip:[email protected];switchtag=902888", "Transaction request URI was incorrect.");
        }
        public void DuplicateTransactionUnitTest()
        {
            SIPTransactionEngine clientEngine = new SIPTransactionEngine();

            SIPURI     dummyURI      = SIPURI.ParseSIPURI("sip:[email protected]");
            SIPRequest inviteRequest = GetDummyINVITERequest(dummyURI);

            SIPEndPoint          dummySIPEndPoint  = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 1234));
            UACInviteTransaction clientTransaction = new UACInviteTransaction(new SIPTransport(MockSIPDNSManager.Resolve, null), inviteRequest, dummySIPEndPoint, dummySIPEndPoint, null);

            clientEngine.AddTransaction(clientTransaction);
            clientEngine.AddTransaction(clientTransaction);
        }
        private DialPlanLineContext GetDummyDialPlanContext(string testDialPlan, string dst)
        {
            SIPDialPlan          dialPlan          = new SIPDialPlan(null, null, null, testDialPlan, SIPDialPlanScriptTypesEnum.Asterisk);
            SIPTransactionEngine transactionEngine = new SIPTransactionEngine();
            SIPTransport         sipTransport      = new SIPTransport(MockSIPDNSManager.Resolve, transactionEngine);
            SIPURI               dummyURI          = SIPURI.ParseSIPURI(dst);
            SIPRequest           inviteRequest     = GetDummyINVITERequest(dummyURI);
            SIPEndPoint          dummyEndPoint     = SIPEndPoint.ParseSIPEndPoint("udp:0.0.0.0:5060");
            UASInviteTransaction uasTransaction    = sipTransport.CreateUASTransaction(inviteRequest, dummyEndPoint, dummyEndPoint, null);
            SIPServerUserAgent   uas             = new SIPServerUserAgent(sipTransport, null, "test", "sipsorcery.com", SIPCallDirection.In, null, null, null, uasTransaction);
            DialPlanLineContext  dialPlanContext = new DialPlanLineContext(null, null, null, null, uas, dialPlan, null, null, null, null);

            return(dialPlanContext);
        }
        public void AckRecognitionIIUnitTest()
        {
            logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
            logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);

            SIPTransport         sipTransport = new SIPTransport();
            SIPTransactionEngine engine       = sipTransport.m_transactionEngine; // Client side of the INVITE.

            string inviteRequestStr =
                "INVITE sip:[email protected] SIP/2.0" + m_CRLF +
                "Via: SIP/2.0/UDP 192.168.1.2:5065;rport;branch=z9hG4bKFBB7EAC06934405182D13950BD51F001" + m_CRLF +
                "From: SER Test X <sip:[email protected]:5065>;tag=196468136" + m_CRLF +
                "To: <sip:[email protected]>" + m_CRLF +
                "Contact: <sip:[email protected]:5065>" + m_CRLF +
                "Call-ID: [email protected]" + m_CRLF +
                "CSeq: 49429 INVITE" + m_CRLF +
                "Max-Forwards: 70" + m_CRLF +
                "Content-Type: application/sdp" + m_CRLF +
                "User-Agent: Dummy" + m_CRLF +
                m_CRLF;

            SIPRequest inviteRequest = SIPRequest.ParseSIPRequest(inviteRequestStr);

            // Server has received the invite.
            SIPEndPoint          dummySIPEndPoint  = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 1234));
            UASInviteTransaction serverTransaction = new UASInviteTransaction(sipTransport, inviteRequest, null, true);

            engine.AddTransaction(serverTransaction);

            string ackRequestStr =
                "ACK sip:[email protected] SIP/2.0" + m_CRLF +
                "Via: SIP/2.0/UDP 192.168.1.2:5065;rport;branch=z9hG4bKFBB7EAC06934405182D13950BD51F001" + m_CRLF +
                "From: SER Test X <sip:[email protected]:5065>;tag=196468136" + m_CRLF +
                "To: <sip:[email protected]>" + m_CRLF +
                "Contact: <sip:[email protected]:5065>" + m_CRLF +
                "Call-ID: [email protected]" + m_CRLF +
                "CSeq: 49429 ACK" + m_CRLF +
                "Max-Forwards: 70" + m_CRLF +
                "User-Agent: Dummy" + m_CRLF +
                m_CRLF;

            SIPRequest ackRequest = SIPRequest.ParseSIPRequest(ackRequestStr);

            SIPTransaction matchingTransaction = engine.GetTransaction(ackRequest);

            Assert.True(matchingTransaction.TransactionId == serverTransaction.TransactionId, "ACK transaction did not match INVITE transaction.");
        }
        public void AckRecognitionIIUnitTest()
        {
            SIPTransactionEngine engine = new SIPTransactionEngine();     // Client side of the INVITE.

            string inviteRequestStr =
                "INVITE sip:[email protected] SIP/2.0" + m_CRLF +
                "Via: SIP/2.0/UDP 192.168.1.2:5065;rport;branch=z9hG4bKFBB7EAC06934405182D13950BD51F001" + m_CRLF +
                "From: SER Test X <sip:[email protected]:5065>;tag=196468136" + m_CRLF +
                "To: <sip:[email protected]>" + m_CRLF +
                "Contact: <sip:[email protected]:5065>" + m_CRLF +
                "Call-ID: [email protected]" + m_CRLF +
                "CSeq: 49429 INVITE" + m_CRLF +
                "Max-Forwards: 70" + m_CRLF +
                "Content-Type: application/sdp" + m_CRLF +
                "User-Agent: Dummy" + m_CRLF +
                m_CRLF;

            SIPRequest inviteRequest = SIPRequest.ParseSIPRequest(inviteRequestStr);

            // Server has received the invite.
            SIPEndPoint          dummySIPEndPoint  = new SIPEndPoint(new IPEndPoint(IPAddress.Loopback, 1234));
            UASInviteTransaction serverTransaction = new UASInviteTransaction(new SIPTransport(MockSIPDNSManager.Resolve, null), inviteRequest, dummySIPEndPoint, dummySIPEndPoint, null, IPAddress.Loopback, true);

            engine.AddTransaction(serverTransaction);

            //SIPResponse errorResponse = SIPTransport.GetResponse(inviteRequest.Header, SIPResponseStatusCodesEnum.Decline, "Unit Test", null, null);

            string ackRequestStr =
                "ACK sip:[email protected] SIP/2.0" + m_CRLF +
                "Via: SIP/2.0/UDP 192.168.1.2:5065;rport;branch=z9hG4bKFBB7EAC06934405182D13950BD51F001" + m_CRLF +
                "From: SER Test X <sip:[email protected]:5065>;tag=196468136" + m_CRLF +
                "To: <sip:[email protected]>" + m_CRLF +
                "Contact: <sip:[email protected]:5065>" + m_CRLF +
                "Call-ID: [email protected]" + m_CRLF +
                "CSeq: 49429 ACK" + m_CRLF +
                "Max-Forwards: 70" + m_CRLF +
                "User-Agent: Dummy" + m_CRLF +
                m_CRLF;

            SIPRequest ackRequest = SIPRequest.ParseSIPRequest(ackRequestStr);

            SIPTransaction matchingTransaction = engine.GetTransaction(ackRequest);

            Assert.IsTrue(matchingTransaction.TransactionId == serverTransaction.TransactionId, "ACK transaction did not match INVITE transaction.");
        }
        public void MatchOnRequestAndResponseTest()
        {
            logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
            logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);

            SIPTransport         sipTransport      = new SIPTransport();
            SIPTransactionEngine transactionEngine = sipTransport.m_transactionEngine;

            SIPRequest inviteRequest = SIPRequest.ParseSIPRequest("INVITE sip:[email protected]:12014 SIP/2.0" + m_CRLF +
                                                                  "Via: SIP/2.0/UDP 127.0.0.1:1234;branch=z9hG4bK5f37455955ca433a902f8fea0ce2dc27" + m_CRLF +
                                                                  "To: <sip:[email protected]:12014>" + m_CRLF +
                                                                  "From: <sip:[email protected]>;tag=2062917371" + m_CRLF +
                                                                  "Call-ID: 8ae45c15425040179a4285d774ccbaf6" + m_CRLF +
                                                                  "CSeq: 1 INVITE" + m_CRLF +
                                                                  "Contact: <sip:127.0.0.1:1234>" + m_CRLF +
                                                                  "Max-Forwards: 70" + m_CRLF +
                                                                  "User-Agent: unittest" + m_CRLF +
                                                                  "Content-Length: 5" + m_CRLF +
                                                                  "Content-Type: application/sdp" + m_CRLF +
                                                                  m_CRLF +
                                                                  "dummy");

            SIPTransaction tx = new UACInviteTransaction(sipTransport, inviteRequest, null);

            transactionEngine.AddTransaction(tx);

            SIPResponse sipResponse = SIPResponse.ParseSIPResponse("SIP/2.0 603 Nothing listening" + m_CRLF +
                                                                   "Via: SIP/2.0/UDP 127.0.0.1:1234;branch=z9hG4bK5f37455955ca433a902f8fea0ce2dc27;rport=12013" + m_CRLF +
                                                                   "To: <sip:[email protected]:12014>" + m_CRLF +
                                                                   "From: <sip:[email protected]>;tag=2062917371" + m_CRLF +
                                                                   "Call-ID: 8ae45c15425040179a4285d774ccbaf6" + m_CRLF +
                                                                   "CSeq: 1 INVITE" + m_CRLF +
                                                                   "Content-Length: 0" + m_CRLF +
                                                                   m_CRLF);

            Assert.True(transactionEngine.GetTransaction(sipResponse) != null, "Transaction should have matched, check the hashing mechanism.");
        }
        public void AckRecognitionUnitTest()
        {
            logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
            logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);

            SIPTransport clientTransport = null;
            SIPTransport serverTransport = null;

            try
            {
                TaskCompletionSource <bool> uasConfirmedTask = new TaskCompletionSource <bool>(TaskCreationOptions.RunContinuationsAsynchronously);

                // Client side of the call.
                clientTransport = new SIPTransport();
                clientTransport.AddSIPChannel(new SIPUDPChannel(new IPEndPoint(IPAddress.Loopback, 0)));
                var clientEngine = clientTransport.m_transactionEngine;
                SetTransportTraceEvents(clientTransport);

                // Server side of the call.
                UASInviteTransaction serverTransaction = null;
                serverTransport = new SIPTransport();
                serverTransport.AddSIPChannel(new SIPUDPChannel(new IPEndPoint(IPAddress.Loopback, 0)));
                SIPTransactionEngine serverEngine = serverTransport.m_transactionEngine;
                SetTransportTraceEvents(serverTransport);
                serverTransport.SIPTransportRequestReceived += (localEndPoint, remoteEndPoint, sipRequest) =>
                {
                    logger.LogDebug("Server Transport Request In: " + sipRequest.Method + ".");
                    serverTransaction = new UASInviteTransaction(serverTransport, sipRequest, null);
                    SetTransactionTraceEvents(serverTransaction);
                    serverTransaction.NewCallReceived += (lep, rep, sipTransaction, newCallRequest) =>
                    {
                        logger.LogDebug("Server new call received.");
                        var busyResponse = SIPResponse.GetResponse(newCallRequest, SIPResponseStatusCodesEnum.BusyHere, null);
                        (sipTransaction as UASInviteTransaction).SendFinalResponse(busyResponse);
                        return(Task.FromResult(SocketError.Success));
                    };
                    serverTransaction.TransactionStateChanged += (tx) =>
                    {
                        if (tx.TransactionState == SIPTransactionStatesEnum.Confirmed)
                        {
                            if (!uasConfirmedTask.TrySetResult(true))
                            {
                                logger.LogWarning($"AckRecognitionUnitTest: FAILED to set result on CompletionSource.");
                            }
                        }
                    };
                    serverTransaction.GotRequest(localEndPoint, remoteEndPoint, sipRequest);

                    return(Task.FromResult(0));
                };

                SIPURI     dummyURI      = new SIPURI("dummy", serverTransport.GetSIPChannels().First().ListeningEndPoint.ToString(), null, SIPSchemesEnum.sip);
                SIPRequest inviteRequest = GetDummyINVITERequest(dummyURI);

                // Send the invite to the server side.
                UACInviteTransaction clientTransaction = new UACInviteTransaction(clientTransport, inviteRequest, null);
                SetTransactionTraceEvents(clientTransaction);
                clientEngine.AddTransaction(clientTransaction);
                clientTransaction.SendInviteRequest();

                if (!uasConfirmedTask.Task.Wait(TRANSACTION_EXCHANGE_TIMEOUT_MS))
                {
                    logger.LogWarning($"Tasks timed out");
                }

                Assert.True(clientTransaction.TransactionState == SIPTransactionStatesEnum.Confirmed, "Client transaction in incorrect state.");
                Assert.True(serverTransaction.TransactionState == SIPTransactionStatesEnum.Confirmed, "Server transaction in incorrect state.");
            }
            finally
            {
                clientTransport.Shutdown();
                serverTransport.Shutdown();
            }
        }