void DviSessionUpnp::Subscribe()
{
LOG(kDvEvent, "Subscription request from ");
iHeaderCallback.Log();
LOG(kDvEvent, "\n");
if (iHeaderSid.Received()) {
Renew();
return;
}
if (!iHeaderCallback.Received() || !iHeaderNt.Received() || !iHeaderTimeout.Received()) {
Error(HttpStatus::kPreconditionFailed);
}
DviDevice* device;
DviService* service;
ParseRequestUri(DviProtocolUpnp::kEventUrlTail, &device, &service);
if (device == NULL || service == NULL) {
Error(HttpStatus::kPreconditionFailed);
}
TUint duration = iHeaderTimeout.Timeout();
Brh sid;
device->CreateSid(sid);
SubscriptionDataUpnp* data = new SubscriptionDataUpnp(iHeaderCallback.Endpoint(), iHeaderCallback.Uri());
DviSubscription* subscription = new DviSubscription(*device, *iPropertyWriterFactory, data, sid, duration);
iPropertyWriterFactory->SubscriptionAdded(*subscription);
DviSubscriptionManager::AddSubscription(*subscription);
if (iHeaderExpect.Continue()) {
iWriterResponse->WriteStatus(HttpStatus::kContinue, Http::eHttp11);
iWriterResponse->WriteFlush();
}
// respond to subscription request
iResponseStarted = true;
iWriterResponse->WriteStatus(HttpStatus::kOk, Http::eHttp11);
WriteServerHeader(*iWriterResponse);
IWriterAscii& writerSid = iWriterResponse->WriteHeaderField(HeaderSid::kHeaderSid);
writerSid.Write(HeaderSid::kFieldSidPrefix);
writerSid.Write(subscription->Sid());
writerSid.WriteFlush();
IWriterAscii& writerTimeout = iWriterResponse->WriteHeaderField(HeaderTimeout::kHeaderTimeout);
writerTimeout.Write(HeaderTimeout::kFieldTimeoutPrefix);
writerTimeout.WriteUint(duration);
writerTimeout.WriteFlush();
iWriterResponse->WriteHeader(Http::kHeaderConnection, Http::kConnectionClose);
iWriterResponse->WriteFlush();
iResponseEnded = true;
LOG(kDvEvent, "Subscription complete for ");
iHeaderCallback.Log();
LOG(kDvEvent, ", sid is ");
LOG(kDvEvent, subscription->Sid());
LOG(kDvEvent, "\n");
// Start subscription, prompting delivery of the first update (covering all state variables)
service->AddSubscription(subscription);
}
void DviProviderSubscriptionLongPoll::Subscribe(IDvInvocation& aInvocation, const Brx& aClientId, const Brx& aUdn, const Brx& aService, TUint aRequestedDuration,
IDvInvocationResponseString& aSid, IDvInvocationResponseUint& aDuration)
{
if (aRequestedDuration > kTimeoutLongPollSecs) {
aRequestedDuration = kTimeoutLongPollSecs;
}
DviDevice* device = iDvStack.DeviceMap().Find(aUdn);
if (device == NULL) {
aInvocation.Error(kErrorCodeBadDevice, kErrorDescBadDevice);
}
DviService* service = NULL;
const TUint serviceCount = device->ServiceCount();
for (TUint i=0; i<serviceCount; i++) {
DviService* s = &device->Service(i);
if (s->ServiceType().PathUpnp() == aService) {
service = s;
break;
}
}
if (service == NULL) {
aInvocation.Error(kErrorCodeBadService, kErrorDescBadService);
}
Brh sid;
device->CreateSid(sid);
TUint timeout = aRequestedDuration;
DviSubscription* subscription = new DviSubscription(iDvStack, *device, iPropertyUpdateCollection, NULL, sid, timeout);
aInvocation.StartResponse();
aSid.Write(subscription->Sid());
aSid.WriteFlush();
aDuration.Write(timeout);
aInvocation.EndResponse();
// Start subscription, prompting availability of the first update (covering all state variables)
iPropertyUpdateCollection.AddSubscription(aClientId, subscription);
iDvStack.SubscriptionManager().AddSubscription(*subscription);
service->AddSubscription(subscription);
}