Examples of javax.sip.SipProvider.sendResponse()

javax.sip.SipProvider.sendResponse()
Sends the Response statelessly, that is no transaction record is associated with this action. This method implies that the application is functioning as either a stateless proxy or a stateless UAS.
- Stateless proxy - A stateless proxy simply forwards every response it receives upstream and discards information about the response message once the message has been forwarded. A stateless proxy does not have any notion of a transaction.
- Stateless UAS - A stateless UAS does not maintain transaction state. It replies to requests normally, but discards any state that would ordinarily be retained by a UAS after a response has been sent. If a stateless UAS receives a retransmission of a request, it regenerates the response and resends it, just as if it were replying to the first instance of the request. A UAS cannot be stateless unless the request processing for that method would always result in the same response if the requests are identical. Stateless UAS's do not use a transaction layer; they receive requests directly from the transport layer and send responses directly to the transport layer.
@see Response @param response the Response to send statelessly. @throws SipException if the SipProvider cannot send the Response for any reason. @see Response

                ContactHeader contactHeader = headerFactory
                        .createContactHeader(address);
                ToHeader toHeader = (ToHeader) okResponse.getHeader(ToHeader.NAME);
                toHeader.setTag("4321"); // Application is supposed to set.
                okResponse.addHeader(contactHeader);
                sipProvider.sendResponse(okResponse); // Send it through the Provider.




            } catch (Exception ex) {
                ex.printStackTrace();
                System.exit(0);

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                        .createContactHeader(address);
                ToHeader toHeader = (ToHeader) okResponse
                        .getHeader(ToHeader.NAME);
                toHeader.setTag("4321"); // Application is supposed to set.
                okResponse.addHeader(contactHeader);
                sipProvider.sendResponse(okResponse); // Send it through the
                                                        // Provider.


            } catch (Exception ex) {
                ex.printStackTrace();
                System.exit(0);

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            // Check that it has a Refer-To, if not bad request
            ReferToHeader refTo = (ReferToHeader) refer.getHeader( ReferToHeader.NAME );
            if (refTo==null) {
                Response bad = messageFactory.createResponse(Response.BAD_REQUEST, refer);
                bad.setReasonPhrase( "Missing Refer-To" );
                sipProvider.sendResponse( bad );
                TestHarness.fail("Bad REFER request. Missing Refer-To.");
            }


            // New test: first time, only send 100 Trying, to test that retransmission
            // continues for non-INVITE requests (using UDP)

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            // New test: first time, only send 100 Trying, to test that retransmission
            // continues for non-INVITE requests (using UDP)
            // before(!) creating a ServerTransaction! Else retransmissions are filtered
            if (!tryingSent && "udp".equalsIgnoreCase(transport)) {
                tryingSent = true;
                sipProvider.sendResponse( messageFactory.createResponse(100, refer) );
                return;
            }


            // Always create a ServerTransaction, best as early as possible in the code
            Response response = null;

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            } else {
                // Can be BYE due to Record-Route
                logger.info("Got a non-invite response " + response);
                SipProvider p = (SipProvider) responseEvent.getSource();
                response.removeFirst( ViaHeader.NAME );
                p.sendResponse( response );
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            System.exit(0);
        }

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                Response newResponse = (Response) response.clone();
                newResponse.removeFirst(ViaHeader.NAME);
                // Send the retransmission statelessly
                SipProvider sipProvider = (SipProvider) responseEvent
                        .getSource();
                sipProvider.sendResponse(newResponse);
            }


        } catch (Exception ex) {
            ex.printStackTrace();
            TestHarness.fail("unexpected exception",ex);

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            .createContactHeader(address);
        ToHeader toHeader = (ToHeader) okResponse
            .getHeader(ToHeader.NAME);
        toHeader.setTag("4321"); // Application is supposed to set.
        okResponse.addHeader(contactHeader);
        sipProvider.sendResponse(okResponse); // Send it through the
                            // Provider.


      } catch (Exception ex) {
        ex.printStackTrace();
        System.exit(0);

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        Response newResponse = (Response) response.clone();
        newResponse.removeFirst(ViaHeader.NAME);
        // Send the retransmission statelessly
        SipProvider sipProvider = (SipProvider) responseEvent
            .getSource();
        sipProvider.sendResponse(newResponse);
      }


    } catch (Exception ex) {
      ex.printStackTrace();
      TestHarness.fail("unexpected exception",ex);

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        ContactHeader contactHeader = headerFactory
            .createContactHeader(address);
        ToHeader toHeader = (ToHeader) okResponse.getHeader(ToHeader.NAME);
        toHeader.setTag("4321"); // Application is supposed to set.
        okResponse.addHeader(contactHeader);
        sipProvider.sendResponse(okResponse); // Send it through the Provider.


        
      } catch (Exception ex) {
        ex.printStackTrace();
        System.exit(0);

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      } else {
        // Can be BYE due to Record-Route
        logger.info("Got a non-invite response " + response);
        SipProvider p = (SipProvider) responseEvent.getSource();
        response.removeFirst( ViaHeader.NAME );
        p.sendResponse( response );
      }
    } catch (Exception ex) {
      ex.printStackTrace();
      System.exit(0);
    }

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