/**
* Place to put some hacks if needed on incoming requests.
*
* @param event the incoming request event.
* @return status <code>true</code> if we don't need to process this message, just discard it and
* <code>false</code> otherwise.
*/
private boolean applyNonConformanceHacks(RequestEvent event) {
Request request = event.getRequest();
try {
/*
* Max-Forwards is required, yet there are UAs which do not
* place it. SipProvider#getNewServerTransaction(Request)
* will throw an exception in the case of a missing
* Max-Forwards header and this method will eventually just
* log it thus ignoring the whole event.
*/
if (request.getHeader(MaxForwardsHeader.NAME) == null) {
// it appears that some buggy providers do send requests
// with no Max-Forwards headers, as we are at application level
// and we know there will be no endless loops
// there is no problem of adding headers and process normally
// this messages
MaxForwardsHeader maxForwards =
SipFactory.getInstance().createHeaderFactory().createMaxForwardsHeader(70);
request.setHeader(maxForwards);
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
try {
// using asterisk voice mail initial notify for messages
// is ok, but on the fly received messages their notify comes
// without subscription-state, so we add it in order to be able to
// process message.
if (request.getMethod().equals(Request.NOTIFY)
&& request.getHeader(EventHeader.NAME) != null
&& ((EventHeader) request.getHeader(EventHeader.NAME))
.getEventType()
.equals(OperationSetMessageWaitingSipImpl.EVENT_PACKAGE)
&& request.getHeader(SubscriptionStateHeader.NAME) == null) {
request.addHeader(
new HeaderFactoryImpl().createSubscriptionStateHeader(SubscriptionStateHeader.ACTIVE));
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
try {
// receiving notify message without subscription state
// used for keep-alive pings, they have done their job
// and are no more need. Skip processing them to avoid
// filling logs with unneeded exceptions.
if (request.getMethod().equals(Request.NOTIFY)
&& request.getHeader(SubscriptionStateHeader.NAME) == null) {
return true;
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
return false;
}
/**
* Constructor for this class. Creates the JAIN-SIP stack.
*
* @throws OperationFailedException if creating the stack fails.
*/
SipStackSharing() throws OperationFailedException {
// init of the stack
try {
SipFactory sipFactory = SipFactory.getInstance();
sipFactory.setPathName("org.jitsi.gov.nist");
Properties sipStackProperties = new SipStackProperties();
// Create SipStack object
this.stack = sipFactory.createSipStack(sipStackProperties);
if (logger.isTraceEnabled()) logger.trace("Created stack: " + this.stack);
// set our custom address resolver managing SRV records
AddressResolverImpl addressResolver = new AddressResolverImpl();
((SIPTransactionStack) this.stack).setAddressResolver(addressResolver);
SipActivator.getNetworkAddressManagerService().addNetworkConfigurationChangeListener(this);
} catch (Exception ex) {
logger.fatal("Failed to get SIP Factory.", ex);
throw new OperationFailedException(
"Failed to get SIP Factory", OperationFailedException.INTERNAL_ERROR, ex);
}
}