Examples of javax.sip.header.MaxForwardsHeader

javax.sip.header.MaxForwardsHeader
The Max-Forwards header field must be used with any SIP method to limit the number of proxies or gateways that can forward the request to the next downstream server. This can also be useful when the client is attempting to trace a request chain that appears to be failing or looping in mid-chain.
The Max-Forwards value is an integer in the range 0-255 indicating the remaining number of times this request message is allowed to be forwarded. This count is decremented by each server that forwards the request. The recommended initial value is 70.
This header field should be inserted by elements that can not otherwise guarantee loop detection. For example, a B2BUA should insert a Max-Forwards header field.
For Example:
Max-Forwards: 6 @author BEA Systems, NIST @version 1.2

      logger.info("Got an ACK! sending bye : " + tid);
      if (tid != null) {
        Dialog dialog = tid.getDialog();
        TlsTest.assertSame("dialog id mismatch", dialog,this.dialog);
        Request bye = dialog.createRequest(Request.BYE);
        MaxForwardsHeader mf = protocolObjects.headerFactory
            .createMaxForwardsHeader(10);
        bye.addHeader(mf);
        ClientTransaction ct = provider.getNewClientTransaction(bye);
        dialog.sendRequest(ct);
        this.byeSent = true;

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


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


      // Create the request.
      Request request = protocolObjects.messageFactory.createRequest(
          requestURI, Request.INVITE, callIdHeader, cSeqHeader,

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


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


                // Create the request.
                Request request = messageFactory.createRequest(requestURI,
                        Request.INVITE, callIdHeader, cSeqHeader, fromHeader,

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


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


        // Create the request.
        Request request = protocolObjects.messageFactory.createRequest(
            requestURI, Request.INVITE, callIdHeader, cSeqHeader,

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


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


        // Create the request.
        Request request = messageFactory.createRequest(requestURI,
            Request.INVITE, callIdHeader, cSeqHeader, fromHeader,

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                    Request inviteRequest = dialog.createRequest(Request.INVITE);
                    ((SipURI) inviteRequest.getRequestURI()).removeParameter("transport");
                    ((ViaHeader) inviteRequest.getHeader(ViaHeader.NAME)).setTransport("udp");
                    inviteRequest.addHeader(contactHeader);
                    MaxForwardsHeader mf = protocolObjects.headerFactory
                            .createMaxForwardsHeader(10);
                    inviteRequest.addHeader(mf);
                     ClientTransaction ct = provider.getNewClientTransaction(inviteRequest);
                    dialog.sendRequest(ct);
                    reInviteCount++;

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


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


                // Create the request.
                Request request = protocolObjects.messageFactory.createRequest(requestURI,
                        Request.INVITE, callIdHeader, cSeqHeader, fromHeader, toHeader,

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


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


                // Create the request.
                Request request = protocolObjects.messageFactory.createRequest(
                        requestURI, Request.INVITE, callIdHeader, cSeqHeader,

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        }


        public void sendReInvite(SipProvider sipProvider) throws Exception {
            Request inviteRequest = dialog.createRequest(Request.INVITE);
            ((SipURI) inviteRequest.getRequestURI()).removeParameter("transport");
            MaxForwardsHeader mf = protocolObjects.headerFactory.createMaxForwardsHeader(10);
            inviteRequest.addHeader(mf);
            ((ViaHeader) inviteRequest.getHeader(ViaHeader.NAME))
                    .setTransport(protocolObjects.transport);
            Address address = protocolObjects.addressFactory.createAddress("Shootme <sip:"
                    + myAddress + ":" + myPort + ">");

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             * If the copy contains a Max-Forwards header field, the jiplet MUST
             * decrement its value by one (1). If the copy does not contain a
             * Max-Forwards header field, the jiplet MUST add one with a field
             * value, which SHOULD be 70.
             */
            MaxForwardsHeader mf = (MaxForwardsHeader) clonedRequest
                    .getHeader(MaxForwardsHeader.NAME);
            if (mf == null)
            {
                mf = headerFactory.createMaxForwardsHeader(70);
                clonedRequest.addHeader(mf);
            }
            else
            {
                int max = mf.getMaxForwards() - 1;
                mf.setMaxForwards(max);
            }


            //            
            // 4. Record-Route
            //

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