/** * Receives options requests and replies with an OK response containing methods that we support. * * @param requestEvent the incoming options request. * @return <tt>true</tt> if request has been successfully processed, <tt>false</tt> otherwise */ @Override public boolean processRequest(RequestEvent requestEvent) { Response optionsOK = null; try { optionsOK = provider.getMessageFactory().createResponse(Response.OK, requestEvent.getRequest()); // add to the allows header all methods that we support for (String method : provider.getSupportedMethods()) { // don't support REGISTERs if (!method.equals(Request.REGISTER)) optionsOK.addHeader(provider.getHeaderFactory().createAllowHeader(method)); } Iterable<String> knownEventsList = provider.getKnownEventsList(); synchronized (knownEventsList) { for (String event : knownEventsList) optionsOK.addHeader(provider.getHeaderFactory().createAllowEventsHeader(event)); } } catch (ParseException ex) { // What else could we do apart from logging? logger.warn("Failed to create an incoming OPTIONS request", ex); return false; } try { SipStackSharing.getOrCreateServerTransaction(requestEvent).sendResponse(optionsOK); } catch (TransactionUnavailableException ex) { // this means that we received an OPTIONS request outside the scope // of a transaction which could mean that someone is simply sending // us b****hit to keep a NAT connection alive, so let's not get too // excited. if (logger.isInfoEnabled()) logger.info("Failed to respond to an incoming " + "transactionless OPTIONS request"); if (logger.isTraceEnabled()) logger.trace("Exception was:", ex); return false; } catch (InvalidArgumentException ex) { // What else could we do apart from logging? logger.warn("Failed to send an incoming OPTIONS request", ex); return false; } catch (SipException ex) { // What else could we do apart from logging? logger.warn("Failed to send an incoming OPTIONS request", ex); return false; } return true; }