Examples of javax.sip.header.CSeqHeader

javax.sip.header.CSeqHeader
A CSeq header field in a request contains a single decimal sequence number and the request method. The CSeq header field serves to identify and order transactions within a dialog, to provide a means to uniquely identify transactions, and to differentiate between new requests and request retransmissions. Two CSeq header fields are considered equal if the sequence number and the request method are identical.
- Method - The method part of CSeq is case-sensitive and MUST match that of the request.
- Sequence number - The sequence number is chosen by the requesting client and is unique within a single value of Call-ID. The sequence number MUST be expressible as a 32-bit unsigned integer and MUST be less than 2**31. For non-REGISTER requests outside of a dialog, the sequence number value is arbitrary. Consecutive Requests that differ in method, headers or body, but have the same CallIdHeader must contain strictly monotonically increasing and contiguous sequence numbers; sequence numbers do not wrap around. Retransmissions of the same Request carry the same sequence number, but an INVITE Request with a different message body or different headers (a "re-invitation") acquires a new, higher sequence number. A server must echo the CSeqHeader from the Request in its Response. If the method value is missing in the received CSeqHeader, the server fills it in appropriately. ACK and CANCEL Requests must contain the same CSeqHeader sequence number (but not method) as the INVITE Request they refer to, while a BYE Request cancelling an invitation must have a higher sequence number. An user agent server must remember the highest sequence number for any INVITE Request with the same CallIdHeader. The server must respond to, and then discard, any INVITE Request with a lower sequence number.
As long as a client follows the above guidelines, it may use any mechanism it would like to select CSeq header field values.
Forked Requests:
Forked Requests must have the same CSeqHeader as there would be ambiguity otherwise between these forked Requests and later BYE Requests issued by the client user agent.
For Example:
CSeq: 4711 INVITE @author BEA Systems, NIST @version 1.2

          ContactHeader contactHeader1 = headerFactory.createContactHeader(addressFactory.createAddress("sip:here@somewhere:5070"));
        ContactHeader contactHeader2 = headerFactory.createContactHeader(addressFactory.createAddress("sip:here@somewhereelse:5080"));
        
        
      CallIdHeader callId = provider.getNewCallId();      
      CSeqHeader cSeq = headerFactory.createCSeqHeader(1l, Request.REGISTER);
      FromHeader from = headerFactory.createFromHeader(fromAddress, "1234");
      ToHeader to = headerFactory.createToHeader(addressFactory.createAddress("server@"+host+":"+SERVER_PORT), null);
      List via = Arrays.asList(((ListeningPointImpl)provider.getListeningPoint(testProtocol)).getViaHeader());      
      MaxForwardsHeader maxForwards = headerFactory.createMaxForwardsHeader(10);

View Full Code Here

                    System.out.println("shootme: got an OK response! ");
                    System.out.println("Dialog State = " + dialog.getState());
                    SipProvider provider = (SipProvider) responseEvent.getSource();


                    Request messageRequest = dialog.createRequest(Request.MESSAGE);
                    CSeqHeader cseq = (CSeqHeader)messageRequest.getHeader(CSeqHeader.NAME);


                    // We will test if the CSEq validation is off by sending CSeq 1 again
                    cseq.setSeqNumber(1);
                    ClientTransaction ct = provider
                    .getNewClientTransaction(messageRequest);
                    dialog.sendRequest(ct);


                } catch (Exception ex) {

View Full Code Here

                    System.out.println("shootme: got an ACK! ");
                    System.out.println("Dialog State = " + dialog.getState());
                    SipProvider provider = (SipProvider) requestEvent.getSource();


                    Request messageRequest = dialog.createRequest(Request.MESSAGE);
                    CSeqHeader cseq = (CSeqHeader)messageRequest.getHeader(CSeqHeader.NAME);


                    // We will test if the CSEq validation is off by sending CSeq 1 again


                    ClientTransaction ct = provider
                    .getNewClientTransaction(messageRequest);
                    cseq.setSeqNumber(1);
                    ct.sendRequest();


                } catch (Exception ex) {
                    ex.printStackTrace();
                }

View Full Code Here


                // Create a new CallId header
                CallIdHeader callIdHeader = sipProvider.getNewCallId();


                // Create a new Cseq header
                CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L,
                        Request.INVITE);


                // Create a new MaxForwardsHeader
                MaxForwardsHeader maxForwards = headerFactory
                        .createMaxForwardsHeader(70);

View Full Code Here

            logger.info(System.currentTimeMillis() - startTime
                    + "ms: Got a response");
            Response response = (Response) responseReceivedEvent.getResponse();
            ClientTransaction tid = responseReceivedEvent
                    .getClientTransaction();
            CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);


            logger.info("Response received : Status Code = "
                    + response.getStatusCode() + " " + cseq);


            if (tid == null) {


                // RFC3261: MUST respond to every 2xx
                if (ackRequest != null && dialog != null) {
                    logger.info("re-sending ACK");
                    try {
                        dialog.sendAck(ackRequest);
                    } catch (SipException se) {
                        se.printStackTrace();
                    }
                }
                return;
            }
            // If the caller is supposed to send the bye
            if (callerSendsBye
                    && !byeTaskRunning) {
                byeTaskRunning = true;
                new Timer().schedule(new ByeTask(dialog), 30000);
            }
            logger.info("transaction state is " + tid.getState());
            logger.info("Dialog = " + tid.getDialog());
            logger.info("Dialog State is " + tid.getDialog().getState());


            try {
                if (response.getStatusCode() == Response.OK) {
                    if (cseq.getMethod().equals(Request.INVITE)) {
                        logger.info("Sending ACK after 15s ...");
                        new Timer().schedule(new AckTimerTask(dialog,cseq.getSeqNumber()), 15000);
                    } else if (cseq.getMethod().equals(Request.CANCEL)) {
                        if (dialog.getState() == DialogState.CONFIRMED) {
                            // oops cancel went in too late. Need to hang up the
                            // dialog.
                            System.out
                                    .println("Sending BYE -- cancel went in too late !!");

View Full Code Here


                // Create a new CallId header
                CallIdHeader callIdHeader = sipProvider.getNewCallId();


                // Create a new Cseq header
                CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L,
                        Request.INVITE);


                // Create a new MaxForwardsHeader
                MaxForwardsHeader maxForwards = headerFactory
                        .createMaxForwardsHeader(70);

View Full Code Here

    public synchronized void processResponse(ResponseEvent responseReceived) {
        logger.info("Got a response");
        ResponseEventExt responseReceivedEvent = (ResponseEventExt) responseReceived;
        Response response = (Response) responseReceivedEvent.getResponse();
        ClientTransaction tid = responseReceivedEvent.getClientTransaction();
        CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);


        logger.info("Response received : Status Code = "
                + response.getStatusCode() + " " + cseq);
        logger.info("Response = " + response + " class=" + response.getClass() );
        


        Dialog dialog = responseReceivedEvent.getDialog();     
        if(createDialogAfterRequest) {
            TestCase.assertNull( dialog );
            return;
        } else {
            TestCase.assertNotNull( dialog );
        }
        
        System.out.println("original Tx " + responseReceivedEvent.getOriginalTransaction());
        if ( cseq.getMethod().equals(Request.INVITE)) {
          TestCase.assertSame("Must preserve original dialog", 
            this.originalDialog,responseReceivedEvent.getOriginalTransaction().getDefaultDialog());
        }


        if (tid != null)
            logger.info("transaction state is " + tid.getState());
        else
            logger.info("transaction = " + tid);


        logger.info("Dialog = " + dialog);


        logger.info("Dialog state is " + dialog.getState());


        try {
            if (response.getStatusCode() == Response.OK) {
                if (cseq.getMethod().equals(Request.INVITE)) {
                    TestCase.assertEquals( DialogState.CONFIRMED, dialog.getState() );
                    Request ackRequest = dialog.createAck(cseq
                            .getSeqNumber());
                
                    TestCase.assertNotNull( ackRequest.getHeader( MaxForwardsHeader.NAME ) );


                     dialog.sendAck(ackRequest);
                     // Proxy will fork. I will accept the first dialog.
                    this.forkedDialogs.add(dialog);
                    if ( responseReceivedEvent.getClientTransaction() != null ) {
                        this.originalTransaction = responseReceivedEvent.getClientTransaction();
                        logger.info("Sending ACK");
                        TestCase.assertTrue(
                                "Dialog state should be CONFIRMED", dialog
                                        .getState() == DialogState.CONFIRMED);


                        TestCase.assertTrue(this.ackedDialog == null ||
                                this.ackedDialog == dialog);
                        this.ackedDialog = dialog;


                        if ( callerSendsBye ) {
                            timer.schedule( new SendBye(ackedDialog), 4000  );
                        }




                    } else {
                        ResponseEventExt responseEventExt  = (ResponseEventExt) responseReceivedEvent;
                        TestCase.assertTrue("forked event must set flag",responseEventExt.isForkedResponse());
                        this.canceledDialog.add(dialog);
                        SipProvider sipProvider = (SipProvider) responseReceivedEvent
                                .getSource();
                        
                        TestCase.assertSame("original ctx must match " , 
                                responseEventExt.getOriginalTransaction(),this.originalTransaction);


                        Request byeRequest = dialog.createRequest(Request.BYE);
                        ClientTransaction ct = sipProvider
                                .getNewClientTransaction(byeRequest);
                        dialog.sendRequest(ct);
                    }




                } else if ( cseq.getMethod().equals(Request.BYE)) {


                    if ( dialog == this.ackedDialog) {
                        this.byeResponseSeen = true;
                    }
                } else {
                    logger.info("Response method = " + cseq.getMethod());
                }
            } else if ( response.getStatusCode() == Response.RINGING ) {
                //TestHarness.assertEquals( DialogState.EARLY, dialog.getState() );
            }
        } catch (Throwable ex) {

View Full Code Here

            // JvB: Make sure that the implementation matches the messagefactory
            callIdHeader = headerFactory
                    .createCallIdHeader(callIdHeader.getCallId());


            // Create a new Cseq header
            CSeqHeader cSeqHeader = headerFactory
                    .createCSeqHeader(1L, Request.INVITE);


            // Create a new MaxForwardsHeader
            MaxForwardsHeader maxForwards = headerFactory
                    .createMaxForwardsHeader(70);

View Full Code Here

     * otherwise.
     */
    public boolean equals(Object other) {


        if (other instanceof CSeqHeader) {
            final CSeqHeader o = (CSeqHeader) other;
            return this.getSeqNumber() == o.getSeqNumber()
                && this.getMethod().equals( o.getMethod() );
        }
        return false;
    }

View Full Code Here

        }
        
        // Filter retransmissions for slow machines
        if(tid == null) return;


        CSeqHeader cseq = (CSeqHeader) response.getHeader( CSeqHeader.NAME );
        if (cseq.getMethod().equals(Request.INVITE)) {


            try {
                sendNotify( response.getStatusCode(), response.getReasonPhrase() );
            } catch (Exception e1) {
                TestHarness.fail("Failed to send notify, because of " + e1.getMessage());
            }


            if (response.getStatusCode() == 200 ) {
                try {
                    Request ack = tid.getDialog().createAck( cseq.getSeqNumber() );
                    tid.getDialog().sendAck( ack );


                    // kill it right away
                    if ( tid.getDialog().getState() != DialogState.TERMINATED ) {
                      Request bye = tid.getDialog()

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of javax.sip.header.CSeqHeader

examples.authorization.ShootistAuth

examples.forked.invite.Proxy

gov.nist.javax.sip.clientauthutils.AuthenticationHelperImpl

gov.nist.javax.sip.header.CSeq

org.apache.camel.component.sip.SipConfiguration

org.cafesip.jiplet.sip.ResponseForwarding

org.cipango.kaleo.sipunit.RegisterTest

org.mobicents.slee.util.SipUtilsImpl

org.mobicents.test.DeployTest

performance.b2bua.prack.TestCall

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.