/** * Sends the <tt>message</tt> to the destination indicated by the <tt>to</tt> contact. * * @param to the <tt>Contact</tt> to send <tt>message</tt> to * @param message the <tt>Message</tt> to send. * @throws java.lang.IllegalStateException if the underlying stack is not registered and * initialized. * @throws java.lang.IllegalArgumentException if <tt>to</tt> is not an instance of ContactImpl. */ public void sendInstantMessage(Contact to, Message message) throws IllegalStateException, IllegalArgumentException { if (!(to instanceof ContactSipImpl)) throw new IllegalArgumentException("The specified contact is not a Sip contact." + to); assertConnected(); // offline message if (to.getPresenceStatus().equals(sipStatusEnum.getStatus(SipStatusEnum.OFFLINE)) && !offlineMessageSupported) { if (logger.isDebugEnabled()) logger.debug("trying to send a message to an offline contact"); fireMessageDeliveryFailed( message, to, MessageDeliveryFailedEvent.OFFLINE_MESSAGES_NOT_SUPPORTED); return; } // create the message Request mes; try { mes = createMessageRequest(to, message); } catch (OperationFailedException ex) { logger.error("Failed to create the message.", ex); fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.INTERNAL_ERROR); return; } try { sendMessageRequest(mes, to, message); } catch (TransactionUnavailableException ex) { logger.error( "Failed to create messageTransaction.\n" + "This is most probably a network connection error.", ex); fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.NETWORK_FAILURE); return; } catch (SipException ex) { logger.error("Failed to send the message.", ex); fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.INTERNAL_ERROR); return; } }