/**
* 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;
}
/**
* Dispatches the event received from a JAIN-SIP <tt>SipProvider</tt> to one of our "candidate
* recipient" listeners.
*
* @param event the event received for a <tt>SipProvider</tt>.
*/
public void processResponse(ResponseEvent event) {
try {
// we don't have to accept the transaction since we
// created the request
ClientTransaction transaction = event.getClientTransaction();
if (logger.isTraceEnabled())
logger.trace(
"received response: "
+ event.getResponse().getStatusCode()
+ " "
+ event.getResponse().getReasonPhrase());
if (transaction == null) {
logger.warn("Transaction is null, probably already expired!");
return;
}
ProtocolProviderServiceSipImpl service = getServiceData(transaction);
if (service != null) {
// Mark the dialog for the dispatching of later in-dialog
// responses. If there is no dialog then the initial request
// sure is marked otherwise we won't have found the service with
// getServiceData(). The request has to be marked in case we
// receive one more response in an out-of-dialog transaction.
if (event.getDialog() != null) {
SipApplicationData.setApplicationData(
event.getDialog(), SipApplicationData.KEY_SERVICE, service);
}
service.processResponse(event);
} else {
logger.error(
"We received a response which "
+ "wasn't marked, please report this to "
+ "*****@*****.**");
}
} catch (Throwable exc) {
// any exception thrown within our code should be caught here
// so that we could log it rather than interrupt stack activity with
// it.
this.logApplicationException(DialogTerminatedEvent.class, exc);
}
}