/** * 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); } }