/**
   * Creates and sends a SUBSCRIBE request to the subscription <tt>Address</tt>/Request URI of a
   * specific <tt>Subscription</tt> in order to request receiving event notifications and adds the
   * specified <tt>Subscription</tt> to the list of subscriptions managed by this instance. The
   * added <tt>Subscription</tt> may later receive notifications to process the <tt>Request</tt>s
   * and/or <tt>Response</tt>s which constitute the signaling session associated with it. If the
   * attempt to create and send the SUBSCRIBE request fails, the specified <tt>Subscription</tt> is
   * not added to the list of subscriptions managed by this instance.
   *
   * @param subscription a <tt>Subscription</tt> which specifies the properties of the SUBSCRIBE
   *     request to be created and sent, to be added to the list of subscriptions managed by this
   *     instance
   * @throws OperationFailedException if we fail constructing or sending the subscription request.
   */
  public void subscribe(Subscription subscription) throws OperationFailedException {
    Dialog dialog = subscription.getDialog();

    if ((dialog != null) && DialogState.TERMINATED.equals(dialog.getState())) dialog = null;

    // create the subscription
    ClientTransaction subscribeTransaction = null;
    try {
      subscribeTransaction =
          (dialog == null)
              ? createSubscription(subscription, subscriptionDuration)
              : createSubscription(subscription, dialog, subscriptionDuration);
    } catch (OperationFailedException ex) {
      ProtocolProviderServiceSipImpl.throwOperationFailedException(
          "Failed to create the subscription", OperationFailedException.INTERNAL_ERROR, ex, logger);
    }

    // we register the contact to find him when the OK will arrive
    CallIdHeader callIdHeader =
        (CallIdHeader) subscribeTransaction.getRequest().getHeader(CallIdHeader.NAME);
    String callId = callIdHeader.getCallId();
    addSubscription(callId, subscription);

    // send the message
    try {
      if (dialog == null) subscribeTransaction.sendRequest();
      else dialog.sendRequest(subscribeTransaction);
    } catch (SipException ex) {
      // this contact will never been accepted or rejected
      removeSubscription(callId, subscription);

      ProtocolProviderServiceSipImpl.throwOperationFailedException(
          "Failed to send the subscription", OperationFailedException.NETWORK_FAILURE, ex, logger);
    }
  }
Esempio n. 2
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  /*
   * Begin Third-Party Call Control.
   */
  public void initiateCall() throws IOException {
    try {
      try {
        busyTreatment = new TreatmentManager("busy.au", 0);
      } catch (IOException e) {
        Logger.println("Invalid busy treatment:  " + e.getMessage());
      }

      Logger.writeFile("Call " + cp + ":   Begin SIP third party call");

      setState(CallState.INVITED);

      InetSocketAddress isa = callHandler.getReceiveAddress();

      if (isa == null) {
        throw new IOException("can't get receiver socket!");
      }

      // send INVITE to the CallParticipant
      clientTransaction = sipUtil.sendInvite(cp, isa);

      if (clientTransaction == null) {
        Logger.error("Error placing call:  " + cp);
        setState(CallState.ENDED, "Reason='Error placing call'");
        throw new IOException("Error placing call:  " + cp);
      }

      CallIdHeader callIdHeader =
          (CallIdHeader) clientTransaction.getRequest().getHeader(CallIdHeader.NAME);

      sipCallId = callIdHeader.getCallId();

      sipServerCallback = SipServer.getSipServerCallback();
      sipServerCallback.addSipListener(sipCallId, this);
    } catch (java.text.ParseException e) {
      Logger.println("Call " + cp + " Error placing call " + cp + ":  " + e.getMessage());
      setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
      throw new IOException("Error placing call " + cp + " " + e.getMessage());
    } catch (InvalidArgumentException e) {
      Logger.println("Call " + cp + " Error placing call " + cp + ":  " + e.getMessage());
      setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
      throw new IOException("Error placing call " + cp + " " + e.getMessage());
    } catch (SipException e) {
      Logger.println("Call " + cp + " Error placing call " + cp + ":  " + e.getMessage());
      setState(CallState.ENDED, "Reason='Error placing call " + cp + " " + e.getMessage() + "'");
      throw new IOException("Error placing call " + cp + " " + e.getMessage());
    }
  }
Esempio n. 3
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  /**
   * handles a BYE request
   *
   * @param request the request
   * @param transId the transaction Id
   * @throws TransactionDoesNotExistException when the transaction record does not exist.
   */
  private void handleBye(Request request, ServerTransaction st) {
    try {
      CallIdHeader callIdHeader = (CallIdHeader) request.getHeader("Call-Id");

      String sipCallId = callIdHeader.getCallId();

      if (sipCallId.equals(this.sipCallId)) {
        receivedBye = true;

        try {
          Logger.writeFile("Call " + cp + " has hung up.");

          // sipUtil.sendOK(clientTransaction, st, cp);
          sipUtil.sendOK(request, st);
        } catch (Exception e) {
          /*
           * We sometimes get a null ServerTransaction
           */
        }
        cancelRequest("hung up");
        sipServerCallback.removeSipListener(sipCallId);
      } else {
        /*
         * this should not happen since the message has been
         * delegated to this sip agent.
         */
        throw new TransactionDoesNotExistException(
            cp + "BYE request received did not " + "match either party:  " + request);
      }
    } catch (TransactionDoesNotExistException e) {
      Logger.error("Call " + cp + " Transaction not found " + e.getMessage());
    } catch (SipException e) {
      Logger.exception("Call " + cp + " SIP Stack error", e);
      cancelRequest("handleBye:  SIP Stack error " + e.getMessage());
    } catch (Exception e) {
      Logger.exception("Call " + cp + " Unknown error ", e);
      cancelRequest("handleBye:  SIP Stack error " + e.getMessage());
    }
  }
Esempio n. 4
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  /**
   * handles the INVITED state.
   *
   * @param response the response
   * @param clientTransaction the client transaction
   * @throws SipException SIP stack related error
   */
  private void handleCallParticipantInvited(Response response, ClientTransaction clientTransaction)
      throws ParseException, SipException, InvalidArgumentException {
    FromHeader fromHeader = (FromHeader) response.getHeader(FromHeader.NAME);

    String displayName = fromHeader.getAddress().getDisplayName();

    int statusCode = response.getStatusCode();

    Logger.println(
        "handleCallParticipantInvited "
            + cp
            + " status "
            + statusCode
            + " "
            + response.getReasonPhrase());
    Logger.println("handleCallParticipantInvited , displayname " + displayName);

    CallIdHeader callIdHeader = (CallIdHeader) response.getHeader(CallIdHeader.NAME);

    if (sipCallId.equals(callIdHeader.getCallId())
        && displayName.equals(cp.getDisplayName())
        && (statusCode == Response.OK || statusCode == Response.SESSION_PROGRESS)
        && ((CSeqHeader) response.getHeader(CSeqHeader.NAME)).getMethod().equals(Request.INVITE)) {
      if (statusCode == Response.SESSION_PROGRESS) {
        /*
         * For some calls, we never get an OK.  Instead we just get
         * SESSION_PROGRESS.  In order to handle these calls, we treat
         * SESSION_PROGRESS as OK.  If an OK arrives later, we'll
         * send an ACK.  This flag allows us to enable or
         * disable this workaround for each call.
         *
         * The problem with always treating SESSION_PROGRESS as OK
         * is that in a conference everybody will hear the ringing sound
         * which the remote call sends until the call is actually answered.
         * This can be avoided if joinConfirmation is specified.
         * The other problem is that if we treat SESSION_PROGRESS
         * as though the call has been answered, then we'll start
         * playing the treatment before a person really answers to
         * hear the treatment.
         */

        if (cp.getHandleSessionProgress() == false) {
          Logger.writeFile("Call " + cp + " Ignoring SESSION_PROGRESS");
          return;
        }

        Logger.writeFile("Call " + cp + " Treating SESSION_PROGRESS as OK");
      }

      if (response.getRawContent() == null) {
        Logger.error("Call " + cp + " no SDP in OK Response!");
        cancelRequest("SIP error!  no SDP in OK Response!");
        return;
      }

      this.clientTransaction = clientTransaction;

      if (statusCode == Response.OK) {
        gotOk = true;
        Logger.writeFile("Call " + cp + " Got OK, call answered\n" + response);
      }

      ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);

      /*
       * We got an OK response.
       *
       * send an ACK back to the CallParticipant
       */

      if (statusCode == Response.OK) {
        sipUtil.sendAck(clientTransaction);
        ackSent = true;
      }

      if (callAnswered) {
        Logger.writeFile("Call " + cp + " done processing OK");
        return;
      }

      /*
       * Remember the IP and port of where to send data to
       * the CallParticipant.
       */

      sdpBody = new String(response.getRawContent());

      SdpInfo sdpInfo;

      try {
        sdpInfo = sipUtil.getSdpInfo(sdpBody, false);

      } catch (ParseException e) {

        Logger.error("Call " + cp + " Invalid SDP in OK Response! " + e.getMessage());
        cancelRequest("SIP error!  Invalid SDP in OK Response!");
        return;
      }

      MediaInfo mediaInfo = sdpInfo.getMediaInfo();
      InetSocketAddress isa =
          new InetSocketAddress(sdpInfo.getRemoteHost(), sdpInfo.getRemotePort());
      InetSocketAddress rtcpAddress = sdpInfo.getRtcpAddress();
      setEndpointAddress(
          isa,
          mediaInfo.getPayload(),
          sdpInfo.getTransmitMediaInfo().getPayload(),
          sdpInfo.getTelephoneEventPayload(),
          rtcpAddress);

      /*
       * The CallParticipant has answered.
       * If join confirmation is required, we remain in the
       * INVITED state.  We set the callAnswered flag so that
       * if the join confirmation times out we know to
       * send a BYE rather than a CANCEL.
       */

      callAnswered = true;

      if (cp.getJoinConfirmationTimeout() == 0) {
        setState(CallState.ANSWERED);
      }

      /*
       * Start treatment if any and wait for it to finish.
       * When the treatment finishes, notification will
       * be delivered to our parent which will indicate
       * we're ready for the conference.
       *
       * If there's no treatment to be played, we're ready now
       * unless we're waiting for join confirmation..
       */
      initializeCallAnsweredTreatment();

      if (callAnsweredTreatment != null) {
        startCallAnsweredTreatment();
      } else {

        if (cp.getJoinConfirmationTimeout() == 0) {
          setState(CallState.ESTABLISHED);
        }
      }

    } else {
      Logger.writeFile("Call " + cp + " Ignoring response: " + response.getReasonPhrase());

      if (Logger.logLevel >= Logger.LOG_SIP) {
        Logger.println("Call " + cp + " Response: " + response);
      }
    }
  }
Esempio n. 5
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  public synchronized void processResponse(ResponseEvent responseReceivedEvent) {

    try {
      Response response = (Response) responseReceivedEvent.getResponse();
      ClientTransaction clientTransaction = responseReceivedEvent.getClientTransaction();

      int statusCode = response.getStatusCode();

      FromHeader fromHeader = (FromHeader) response.getHeader(FromHeader.NAME);

      String displayName = fromHeader.getAddress().getDisplayName();

      if (Logger.logLevel >= Logger.LOG_SIP) {
        Logger.println(
            "Response:  statusCode "
                + statusCode
                + " state "
                + getCallState()
                + " fromHeader "
                + displayName
                + " call participant "
                + cp.getName());
      }

      if (reasonCallTerminated != null) {
        /*
         * Ignore OK and Request Terminated.
         * XXX what's the symbol for 487?
         */
        if (statusCode != Response.OK && statusCode != 487) {
          if (Logger.logLevel >= Logger.LOG_SIP) {
            Logger.println("Call " + cp + ":  request cancelled, ignoring response");
          }
        }

        CallIdHeader callIdHeader = (CallIdHeader) response.getHeader("Call-Id");

        String sipCallId = callIdHeader.getCallId();
        sipServerCallback.removeSipListener(sipCallId);
        return;
      }

      /*
       * Some type of global failure that prevents the
       * CallParticipant from being contacted, report failure.
       */
      if (forceGatewayError) {
        statusCode = 500;
        forceGatewayError = false;
      }

      if (statusCode >= 500 && getState() == CallState.INVITED) {
        Logger.error(
            "Call " + cp + " gateway error:  " + statusCode + " " + response.getReasonPhrase());
        cancelRequest("gateway error: " + statusCode + " " + response.getReasonPhrase());
        return;

      } else if (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED
          || statusCode == Response.UNAUTHORIZED) {

        if (cp.getProxyCredentials() != null) {
          try {
            SipServer.handleChallenge(response, clientTransaction, cp.getProxyCredentials())
                .sendRequest();

          } catch (Exception e) {

            Logger.println("Proxy authentification failed  " + e);
          }
        }
        return;

      } else if (statusCode >= 400) {

        // if we get a busy or an unknown error, play busy.
        Logger.println("Call " + cp + " got status code :" + statusCode);

        cp.setCallEndTreatment(null);
        cp.setConferenceJoinTreatment(null);
        cp.setConferenceLeaveTreatment(null);

        /*
         * play busy treatment, but deallocate any resources
         * held up by ringBack first, if any.
         */
        // stopCallAnsweredTreatment();

        if (statusCode == Response.BUSY_HERE) {
          try {
            if (busyTreatment != null) {
              addTreatment(busyTreatment);
              // busyTreatment.waitForTreatment();
            } else {
              Logger.println("Unable to play busy treatment!!!");
            }
          } catch (Exception e) {
            Logger.error("can't start busy treatment!" + sdpBody);
          }

          CallEvent callEvent = new CallEvent(CallEvent.BUSY_HERE);

          callEvent.setInfo(response.getReasonPhrase());

          sendCallEventNotification(callEvent);
        }

        // sipUtil.sendBye(clientTransaction);
        cancelRequest(response.getReasonPhrase());
        return;
      }

      /* state machine */
      switch (getState()) {
          /*
           * CallParticipant picked up, send treatment if any,
           * and wait for it to finish.
           */
        case CallState.INVITED:
          if (rejectCall) {
            Logger.error(
                "Call " + cp + " gateway error:  " + statusCode + " " + response.getReasonPhrase());

            cancelRequest("gateway error: " + statusCode + " " + response.getReasonPhrase());
            return;
          }

          handleCallParticipantInvited(response, clientTransaction);
          break;

          /*
           * Call established, the ACK needs to be resent.
           * According to Ranga, this is done by the NIST SIP Stack.
           */
        case CallState.ESTABLISHED:
          if (statusCode == Response.OK) {
            gotOk = true;

            Logger.writeFile("Call " + cp + " Got OK, ESTABLISHED");

            if (ackSent == false) {
              sipUtil.sendAck(clientTransaction);
              ackSent = true;
            }
          }
          break;

        case CallState.ENDED:
          break; // ignore the response

        default:
          Logger.error("Process Response bad state " + getState() + "\n" + response);
      }
    } catch (SipException e) {
      Logger.exception("Call " + cp + " SIP Stack error ", e);

      cancelRequest("processResponse:  SIP Stack error " + e.getMessage());
    } catch (Exception e) {
      Logger.exception("processResponse:  " + cp, e);

      cancelRequest("processResponse:  SIP Stack error " + e.getMessage());
    }
  }
Esempio n. 6
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  private void register() throws IOException {
    Log.info("Registering with " + registrar);
    FromHeader fromHeader = getFromHeader();
    Address fromAddress = fromHeader.getAddress();

    // Request URI
    SipURI requestURI = null;
    try {
      requestURI = addressFactory.createSipURI(null, registrar);

    } catch (ParseException e) {
      throw new IOException("Bad registrar address:" + registrar + " " + e.getMessage());
    }
    // requestURI.setPort(registrarPort);

    try {
      requestURI.setTransportParam(sipProvider.getListeningPoint().getTransport());

    } catch (ParseException e) {
      throw new IOException(
          sipProvider.getListeningPoint().getTransport()
              + " is not a valid transport! "
              + e.getMessage());
    }

    CallIdHeader callIdHeader = sipProvider.getNewCallId();
    CSeqHeader cSeqHeader = null;

    try {
      cSeqHeader = headerFactory.createCSeqHeader(1, Request.REGISTER);
    } catch (ParseException e) {
      // Should never happen
      throw new IOException("Corrupt Sip Stack " + e.getMessage());
    } catch (InvalidArgumentException e) {
      // Should never happen
      throw new IOException("The application is corrupt ");
    }

    ToHeader toHeader = null;
    try {
      String proxyWorkAround = System.getProperty("com.sun.mc.softphone.REGISTRAR_WORKAROUND");

      if (proxyWorkAround != null && proxyWorkAround.toUpperCase().equals("TRUE")) {

        SipURI toURI = (SipURI) (requestURI.clone());
        toURI.setUser(System.getProperty("user.name"));

        toHeader = headerFactory.createToHeader(addressFactory.createAddress(toURI), null);
      } else {
        toHeader = headerFactory.createToHeader(fromAddress, null);
      }
    } catch (ParseException e) {
      throw new IOException(
          "Could not create a To header for address:"
              + fromHeader.getAddress()
              + " "
              + e.getMessage());
    }

    ArrayList viaHeaders = getLocalViaHeaders();
    MaxForwardsHeader maxForwardsHeader = getMaxForwardsHeader();
    Request request = null;

    try {
      request =
          messageFactory.createRequest(
              requestURI,
              Request.REGISTER,
              callIdHeader,
              cSeqHeader,
              fromHeader,
              toHeader,
              viaHeaders,
              maxForwardsHeader);
    } catch (ParseException e) {
      throw new IOException("Could not create the register request! " + e.getMessage());
    }

    ExpiresHeader expHeader = null;

    for (int retry = 0; retry < 2; retry++) {
      try {
        expHeader = headerFactory.createExpiresHeader(expires);
      } catch (InvalidArgumentException e) {
        if (retry == 0) {
          continue;
        }
        throw new IOException(
            "Invalid registrations expiration parameter - " + expires + " " + e.getMessage());
      }
    }

    request.addHeader(expHeader);
    ContactHeader contactHeader = getRegistrationContactHeader();
    request.addHeader(contactHeader);

    try {
      SipURI routeURI =
          (SipURI) addressFactory.createURI("sip:" + proxyCredentials.getProxy() + ";lr");
      RouteHeader routeHeader =
          headerFactory.createRouteHeader(addressFactory.createAddress(routeURI));
      request.addHeader(routeHeader);

    } catch (Exception e) {

      Log.error("Creating registration route error ", e);
    }

    ClientTransaction regTrans = null;
    try {
      regTrans = sipProvider.getNewClientTransaction(request);
    } catch (TransactionUnavailableException e) {
      throw new IOException(
          "Could not create a register transaction!\n"
              + "Check that the Registrar address is correct! "
              + e.getMessage());
    }

    try {
      sipCallId = callIdHeader.getCallId();
      sipServerCallback.addSipListener(sipCallId, this);
      registerRequest = request;
      regTrans.sendRequest();

      Log.debug("Sent register request " + registerRequest);

      if (expires > 0) {
        scheduleReRegistration();
      }
    } catch (Exception e) {
      throw new IOException("Could not send out the register request! " + e.getMessage());
    }

    this.registerRequest = request;
  }
  /**
   * Implements {@link MethodProcessor#processResponse(ResponseEvent)}. Handles only responses to
   * SUBSCRIBE requests because they are the only requests concerning event package subscribers (and
   * the only requests sent by them, for that matter) and if the processing of a given response
   * requires event package-specific handling, delivers the response to the matching
   * <tt>Subscription</tt> instance. Examples of such event package-specific handling include
   * letting the respective <tt>Subscription</tt> handle the success or failure in the establishment
   * of a subscription.
   *
   * @param responseEvent a <tt>ResponseEvent</tt> specifying the SIP <tt>Response</tt> to be
   *     processed
   * @return <tt>true</tt> if the SIP <tt>Response</tt> specified by <tt>responseEvent</tt> was
   *     processed; otherwise, <tt>false</tt>
   */
  @Override
  public boolean processResponse(ResponseEvent responseEvent) {
    Response response = responseEvent.getResponse();

    CSeqHeader cseqHeader = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
    if (cseqHeader == null) {
      logger.error("An incoming response did not contain a CSeq header");
      return false;
    }
    if (!Request.SUBSCRIBE.equals(cseqHeader.getMethod())) return false;

    ClientTransaction clientTransaction = responseEvent.getClientTransaction();
    Request request = clientTransaction.getRequest();

    /*
     * Don't handle responses to requests not coming from this event
     * package.
     */
    if (request != null) {
      EventHeader eventHeader = (EventHeader) request.getHeader(EventHeader.NAME);
      if ((eventHeader == null) || !eventPackage.equalsIgnoreCase(eventHeader.getEventType()))
        return false;
    }

    // Find the subscription.
    CallIdHeader callIdHeader = (CallIdHeader) response.getHeader(CallIdHeader.NAME);
    String callId = callIdHeader.getCallId();
    Subscription subscription = getSubscription(callId);

    // if it's the response to an unsubscribe message, we just ignore it
    // whatever the response is however if we need to handle a
    // challenge, we do it
    ExpiresHeader expHeader = response.getExpires();
    int statusCode = response.getStatusCode();
    SipProvider sourceProvider = (SipProvider) responseEvent.getSource();
    if (((expHeader != null) && (expHeader.getExpires() == 0))
        || (subscription == null)) // this handle the unsubscription
    // case where we removed the contact
    // from subscribedContacts
    {
      boolean processed = false;

      if ((statusCode == Response.UNAUTHORIZED)
          || (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED)) {
        try {
          processAuthenticationChallenge(clientTransaction, response, sourceProvider);
          processed = true;
        } catch (OperationFailedException e) {
          logger.error("can't handle the challenge", e);
        }
      } else if ((statusCode != Response.OK) && (statusCode != Response.ACCEPTED)) processed = true;

      // any other cases (200/202) will imply a NOTIFY, so we will
      // handle the end of a subscription there
      return processed;
    }

    if ((statusCode >= Response.OK) && (statusCode < Response.MULTIPLE_CHOICES)) {
      // OK (200/202)
      if ((statusCode == Response.OK) || (statusCode == Response.ACCEPTED)) {
        if (expHeader == null) {
          // not conform to rfc3265
          logger.error("no Expires header in this response");
          return false;
        }

        SubscriptionRefreshTask refreshTask = new SubscriptionRefreshTask(subscription);
        subscription.setTimerTask(refreshTask);

        int refreshDelay = expHeader.getExpires();
        // try to keep a margin if the refresh delay allows it
        if (refreshDelay >= (2 * refreshMargin)) refreshDelay -= refreshMargin;
        timer.schedule(refreshTask, refreshDelay * 1000);

        // do it to remember the dialog in case of a polling
        // subscription (which means no call to finalizeSubscription)
        subscription.setDialog(clientTransaction.getDialog());

        subscription.processSuccessResponse(responseEvent, statusCode);
      }
    } else if ((statusCode >= Response.MULTIPLE_CHOICES) && (statusCode < Response.BAD_REQUEST)) {
      if (logger.isInfoEnabled())
        logger.info(
            "Response to subscribe to "
                + subscription.getAddress()
                + ": "
                + response.getReasonPhrase());
    } else if (statusCode >= Response.BAD_REQUEST) {
      // if the response is a 423 response, just re-send the request
      // with a valid expires value
      if (statusCode == Response.INTERVAL_TOO_BRIEF) {
        MinExpiresHeader min = (MinExpiresHeader) response.getHeader(MinExpiresHeader.NAME);

        if (min == null) {
          logger.error("no minimal expires value in this 423 " + "response");
          return false;
        }

        ExpiresHeader exp = request.getExpires();

        try {
          exp.setExpires(min.getExpires());
        } catch (InvalidArgumentException e) {
          logger.error("can't set the new expires value", e);
          return false;
        }

        ClientTransaction transac = null;
        try {
          transac = protocolProvider.getDefaultJainSipProvider().getNewClientTransaction(request);
        } catch (TransactionUnavailableException e) {
          logger.error("can't create the client transaction", e);
          return false;
        }

        try {
          transac.sendRequest();
        } catch (SipException e) {
          logger.error("can't send the new request", e);
          return false;
        }

        return true;
        // UNAUTHORIZED (401/407)
      } else if ((statusCode == Response.UNAUTHORIZED)
          || (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED)) {
        try {
          processAuthenticationChallenge(clientTransaction, response, sourceProvider);
        } catch (OperationFailedException e) {
          logger.error("can't handle the challenge", e);

          removeSubscription(callId, subscription);
          subscription.processFailureResponse(responseEvent, statusCode);
        }
        // 408 480 486 600 603 : non definitive reject
        // others: definitive reject (or not implemented)
      } else {
        if (logger.isDebugEnabled()) logger.debug("error received from the network:\n" + response);

        removeSubscription(callId, subscription);
        subscription.processFailureResponse(responseEvent, statusCode);
      }
    }

    return true;
  }
  /**
   * Implements {@link MethodProcessor#processRequest(RequestEvent)}. Handles only NOTIFY requests
   * because they are the only requests concerning event package subscribers and if the processing
   * of a given request requires event package-specific handling, delivers the request to the
   * matching Subscription instance. Examples of such event package-specific handling include
   * handling the termination of an existing Subscription and processing the bodies of the NOTIFY
   * requests for active Subscriptions.
   *
   * @param requestEvent a <tt>RequestEvent</tt> specifying the SIP <tt>Request</tt> to be processed
   * @return <tt>true</tt> if the SIP <tt>Request</tt> specified by <tt>requestEvent</tt> was
   *     processed; otherwise, <tt>false</tt>
   */
  @Override
  public boolean processRequest(RequestEvent requestEvent) {
    Request request = requestEvent.getRequest();

    EventHeader eventHeader = (EventHeader) request.getHeader(EventHeader.NAME);
    if ((eventHeader == null) || !eventPackage.equalsIgnoreCase(eventHeader.getEventType())) {
      /*
       * We are not concerned by this request, perhaps another listener
       * is. So don't send a 489 / Bad event answer here.
       */
      return false;
    }

    if (!Request.NOTIFY.equals(request.getMethod())) return false;

    if (logger.isDebugEnabled()) logger.debug("notify received");

    SubscriptionStateHeader sstateHeader =
        (SubscriptionStateHeader) request.getHeader(SubscriptionStateHeader.NAME);
    // notify must contain one (rfc3265)
    if (sstateHeader == null) {
      logger.error("no subscription state in this request");
      return false;
    }
    String sstate = sstateHeader.getState();

    ServerTransaction serverTransaction = getOrCreateServerTransaction(requestEvent);

    // first handle the case of a contact still pending
    // it's possible if the NOTIFY arrives before the OK
    CallIdHeader callIdHeader = (CallIdHeader) request.getHeader(CallIdHeader.NAME);
    String callId = callIdHeader.getCallId();
    Subscription subscription = getSubscription(callId);

    // see if the notify correspond to an existing subscription
    if ((subscription == null) && !SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
      if (logger.isDebugEnabled()) logger.debug("subscription not found for callId " + callId);

      // send a 481 response (rfc3625)
      Response response;
      try {
        response =
            protocolProvider
                .getMessageFactory()
                .createResponse(Response.CALL_OR_TRANSACTION_DOES_NOT_EXIST, request);
      } catch (ParseException e) {
        logger.error("failed to create the 481 response", e);
        return false;
      }

      try {
        serverTransaction.sendResponse(response);
      } catch (SipException e) {
        logger.error("failed to send the response", e);
      } catch (InvalidArgumentException e) {
        // should not happen
        logger.error("invalid argument provided while trying to send the response", e);
      }
      return true;
    }

    // if we don't understand the content
    ContentTypeHeader ctheader = (ContentTypeHeader) request.getHeader(ContentTypeHeader.NAME);
    if ((ctheader != null) && !ctheader.getContentSubType().equalsIgnoreCase(contentSubType)) {
      // send a 415 response (rfc3261)
      Response response;
      try {
        response =
            protocolProvider
                .getMessageFactory()
                .createResponse(Response.UNSUPPORTED_MEDIA_TYPE, request);
      } catch (ParseException e) {
        logger.error("failed to create the OK response", e);
        return false;
      }

      // we want PIDF
      AcceptHeader acceptHeader;
      try {
        acceptHeader =
            protocolProvider.getHeaderFactory().createAcceptHeader("application", contentSubType);
      } catch (ParseException e) {
        // should not happen
        logger.error("failed to create the accept header", e);
        return false;
      }
      response.setHeader(acceptHeader);

      try {
        serverTransaction.sendResponse(response);
      } catch (SipException e) {
        logger.error("failed to send the response", e);
      } catch (InvalidArgumentException e) {
        // should not happen
        logger.error("invalid argument provided while trying" + " to send the response", e);
      }
    }

    // if the presentity doesn't want of us anymore
    if (SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
      // if we requested this end of subscription, subscription == null
      if (subscription != null) {
        removeSubscription(callId, subscription);
        subscription.processTerminatedRequest(requestEvent, sstateHeader.getReasonCode());
      }
    }

    // send an OK response
    Response response;
    try {
      response = protocolProvider.getMessageFactory().createResponse(Response.OK, request);
    } catch (ParseException e) {
      logger.error("failed to create the OK response", e);
      return false;
    }

    try {
      serverTransaction.sendResponse(response);
    } catch (SipException e) {
      logger.error("failed to send the response", e);
    } catch (InvalidArgumentException e) {
      // should not happen
      logger.error("invalid argument provided while trying to send the response", e);
    }

    // transform the presence document in new presence status
    if (subscription != null)
      subscription.processActiveRequest(requestEvent, request.getRawContent());

    return true;
  }