/**
* Implements {@link MethodProcessor#processRequest(RequestEvent)}. Handles only NOTIFY requests
* because they are the only requests concerning event package subscribers and if the processing
* of a given request requires event package-specific handling, delivers the request to the
* matching Subscription instance. Examples of such event package-specific handling include
* handling the termination of an existing Subscription and processing the bodies of the NOTIFY
* requests for active Subscriptions.
*
* @param requestEvent a <tt>RequestEvent</tt> specifying the SIP <tt>Request</tt> to be processed
* @return <tt>true</tt> if the SIP <tt>Request</tt> specified by <tt>requestEvent</tt> was
* processed; otherwise, <tt>false</tt>
*/
@Override
public boolean processRequest(RequestEvent requestEvent) {
Request request = requestEvent.getRequest();
EventHeader eventHeader = (EventHeader) request.getHeader(EventHeader.NAME);
if ((eventHeader == null) || !eventPackage.equalsIgnoreCase(eventHeader.getEventType())) {
/*
* We are not concerned by this request, perhaps another listener
* is. So don't send a 489 / Bad event answer here.
*/
return false;
}
if (!Request.NOTIFY.equals(request.getMethod())) return false;
if (logger.isDebugEnabled()) logger.debug("notify received");
SubscriptionStateHeader sstateHeader =
(SubscriptionStateHeader) request.getHeader(SubscriptionStateHeader.NAME);
// notify must contain one (rfc3265)
if (sstateHeader == null) {
logger.error("no subscription state in this request");
return false;
}
String sstate = sstateHeader.getState();
ServerTransaction serverTransaction = getOrCreateServerTransaction(requestEvent);
// first handle the case of a contact still pending
// it's possible if the NOTIFY arrives before the OK
CallIdHeader callIdHeader = (CallIdHeader) request.getHeader(CallIdHeader.NAME);
String callId = callIdHeader.getCallId();
Subscription subscription = getSubscription(callId);
// see if the notify correspond to an existing subscription
if ((subscription == null) && !SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
if (logger.isDebugEnabled()) logger.debug("subscription not found for callId " + callId);
// send a 481 response (rfc3625)
Response response;
try {
response =
protocolProvider
.getMessageFactory()
.createResponse(Response.CALL_OR_TRANSACTION_DOES_NOT_EXIST, request);
} catch (ParseException e) {
logger.error("failed to create the 481 response", e);
return false;
}
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying to send the response", e);
}
return true;
}
// if we don't understand the content
ContentTypeHeader ctheader = (ContentTypeHeader) request.getHeader(ContentTypeHeader.NAME);
if ((ctheader != null) && !ctheader.getContentSubType().equalsIgnoreCase(contentSubType)) {
// send a 415 response (rfc3261)
Response response;
try {
response =
protocolProvider
.getMessageFactory()
.createResponse(Response.UNSUPPORTED_MEDIA_TYPE, request);
} catch (ParseException e) {
logger.error("failed to create the OK response", e);
return false;
}
// we want PIDF
AcceptHeader acceptHeader;
try {
acceptHeader =
protocolProvider.getHeaderFactory().createAcceptHeader("application", contentSubType);
} catch (ParseException e) {
// should not happen
logger.error("failed to create the accept header", e);
return false;
}
response.setHeader(acceptHeader);
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying" + " to send the response", e);
}
}
// if the presentity doesn't want of us anymore
if (SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
// if we requested this end of subscription, subscription == null
if (subscription != null) {
removeSubscription(callId, subscription);
subscription.processTerminatedRequest(requestEvent, sstateHeader.getReasonCode());
}
}
// send an OK response
Response response;
try {
response = protocolProvider.getMessageFactory().createResponse(Response.OK, request);
} catch (ParseException e) {
logger.error("failed to create the OK response", e);
return false;
}
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying to send the response", e);
}
// transform the presence document in new presence status
if (subscription != null)
subscription.processActiveRequest(requestEvent, request.getRawContent());
return true;
}
