Examples of javax.sip.header.ReasonHeader

javax.sip.header.ReasonHeader
etf.org/rfc/rfc3326.txt">RFC3326, this header is not part of RFC3261.
The ReasonHeader provides information on why a SIP request was issued, often useful when creating services and also used to encapsulate a final status code in a provisional response, which is needed to resolve the "Heterogeneous Error Response Forking Problem".
The Reason header field appears to be most useful for BYE and CANCEL requests, but it can appear in any request within a dialog, in any CANCEL request and in 155 (Update Requested) responses. When used in requests, clients and servers are free to ignore this header field. It has no impact on protocol processing.
Examples of the ReasonHeader usage are:
- A SIP CANCEL request can be issued if the call has completed on another branch or was abandoned before answer. While the protocol and system behavior is the same in both cases, namely, alerting will cease, the user interface may well differ. In the second case, the call may be logged as a missed call, while this would not be appropriate if the call was picked up elsewhere.
- Third party call controllers sometimes generate a SIP request upon reception of a SIP response from another dialog. Gateways generate SIP requests after receiving messages from a different protocol than SIP. In both cases the client may be interested in knowing what triggered the SIP request.
- An INVITE can sometimes be rejected not because the session initiation was declined, but because some aspect of the request was not acceptable. If the INVITE forked and resulted in a rejection, the error response may never be forwarded to the client unless all the other branches also reject the request. This problem is known as the "Heterogeneous Error Response Forking Problem". The header field defined in this draft allows encapsulating the final error response in a 155 (Update Requested) provisional response.
A server must ignore Headers that it does not understand. A proxy must not remove or modify Headers that it does not understand. @author BEA Systems, NIST @version 1.2

                        try {
                            Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                            if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                                byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                            }
                            ReasonHeader reasonHeader = new Reason();
                            reasonHeader.setProtocol("SIP");
                            reasonHeader.setCause(1025);
                            reasonHeader.setText("Timed out waiting to send ACK");
                            byeRequest.addHeader(reasonHeader);
                            ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                            SIPDialog.this.sendRequest(byeCtx);
                            return;
                        } catch (Exception ex) {

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                    } else {
                        Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                        if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                            byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                        }
                        ReasonHeader reasonHeader = new Reason();
                        reasonHeader.setCause(1024);
                        reasonHeader.setText("Timed out waiting to re-INVITE");
                        byeRequest.addHeader(reasonHeader);
                        ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                        SIPDialog.this.sendRequest(byeCtx);
                        return;
                    }

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                        try {
                            Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                            if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                                byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                            }
                            ReasonHeader reasonHeader = new Reason();
                            reasonHeader.setProtocol("SIP");
                            reasonHeader.setCause(1025);
                            reasonHeader.setText("Timed out waiting to send ACK for dialog " + dialogId);
                            byeRequest.addHeader(reasonHeader);
                            ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                            SIPDialog.this.sendRequest(byeCtx);
                            return;
                        } catch (Exception ex) {

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                                .createRequest(Request.BYE);
                        if (MessageFactoryImpl.getDefaultUserAgentHeader() != null) {
                            byeRequest.addHeader(MessageFactoryImpl
                                    .getDefaultUserAgentHeader());
                        }
                        ReasonHeader reasonHeader = new Reason();
                        reasonHeader.setCause(1024);
                        reasonHeader.setText("Timed out waiting to re-INVITE");
                        byeRequest.addHeader(reasonHeader);
                        ClientTransaction byeCtx = SIPDialog.this
                                .getSipProvider().getNewClientTransaction(
                                        byeRequest);
                        SIPDialog.this.sendRequest(byeCtx);

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                                    .createRequest(Request.BYE);
                            if (MessageFactoryImpl.getDefaultUserAgentHeader() != null) {
                                byeRequest.addHeader(MessageFactoryImpl
                                        .getDefaultUserAgentHeader());
                            }
                            ReasonHeader reasonHeader = new Reason();
                            reasonHeader.setProtocol("SIP");
                            reasonHeader.setCause(1025);
                            reasonHeader
                                    .setText("Timed out waiting to send ACK " + dialogId);
                            byeRequest.addHeader(reasonHeader);
                            ClientTransaction byeCtx = SIPDialog.this
                                    .getSipProvider().getNewClientTransaction(
                                            byeRequest);

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                    } else {
                        Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                        if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                            byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                        }
                        ReasonHeader reasonHeader = new Reason();
                        reasonHeader.setCause(1024);
                        reasonHeader.setText("Timed out waiting to re-INVITE");
                        byeRequest.addHeader(reasonHeader);
                        ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                        SIPDialog.this.sendRequest(byeCtx);
                        return;
                    }

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                        try {
                            Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                            if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                                byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                            }
                            ReasonHeader reasonHeader = new Reason();
                            reasonHeader.setProtocol("SIP");
                            reasonHeader.setCause(1025);
                            reasonHeader.setText("Timed out waiting to send ACK");
                            byeRequest.addHeader(reasonHeader);
                            ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                            SIPDialog.this.sendRequest(byeCtx);
                            return;
                        } catch (Exception ex) {

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                Header callInfoHeader = headerFactory.createHeader("Call-Info",
                        "<http://www.antd.nist.gov>");
                request.addHeader(callInfoHeader);
                
                // Non regression test for https://java.net/jira/browse/JSIP-460
                ReasonHeader reasonHeader = headerFactory.createReasonHeader("SIP", 200, "Call Completed Elsewhere");
                request.addHeader(reasonHeader);
                reasonHeader = headerFactory.createReasonHeader("Q.850", 16, "Terminated");
                request.addHeader(reasonHeader);
                
                ListIterator<Header> listIt = request.getHeaders(ReasonHeader.NAME);

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                    } else {
                        Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                        if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                            byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                        }
                        ReasonHeader reasonHeader = new Reason();
                        reasonHeader.setCause(1024);
                        reasonHeader.setText("Timed out waiting to re-INVITE");
                        byeRequest.addHeader(reasonHeader);
                        ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                        SIPDialog.this.sendRequest(byeCtx);
                        return;
                    }

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                        try {
                            Request byeRequest = SIPDialog.this.createRequest(Request.BYE);
                            if ( MessageFactoryImpl.getDefaultUserAgentHeader() != null ) {
                                byeRequest.addHeader(MessageFactoryImpl.getDefaultUserAgentHeader());
                            }
                            ReasonHeader reasonHeader = new Reason();
                            reasonHeader.setProtocol("SIP");
                            reasonHeader.setCause(1025);
                            reasonHeader.setText("Timed out waiting to send ACK");
                            byeRequest.addHeader(reasonHeader);
                            ClientTransaction byeCtx = SIPDialog.this.getSipProvider().getNewClientTransaction(byeRequest);
                            SIPDialog.this.sendRequest(byeCtx);
                            return;
                        } catch (Exception ex) {

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