// note that we cannot call parent implementation because lock might be possible non-multiple
void FCurlHttpManager::AddRequest(TSharedRef<class IHttpRequest> Request)
{
FScopeLock ScopeLock(&RequestLock);
Requests.AddUnique(Request);
FCurlHttpRequest* CurlRequest = static_cast< FCurlHttpRequest* >( &Request.Get() );
HandlesToRequests.Add(CurlRequest->GetEasyHandle(), Request);
}
// note that we cannot call parent implementation because lock might be possible non-multiple
void FCurlHttpManager::RemoveRequest(const TSharedRef<class IHttpRequest>& Request)
{
FScopeLock ScopeLock(&RequestLock);
// Keep track of requests that have been removed to be destroyed later
PendingDestroyRequests.AddUnique(FRequestPendingDestroy(DeferredDestroyDelay,Request));
FCurlHttpRequest* CurlRequest = static_cast< FCurlHttpRequest* >( &Request.Get() );
HandlesToRequests.Remove(CurlRequest->GetEasyHandle());
Requests.Remove(Request);
}
bool FCurlHttpManager::Tick(float DeltaSeconds)
{
check(MultiHandle);
if (Requests.Num() > 0)
{
FScopeLock ScopeLock(&RequestLock);
int RunningRequests = -1;
curl_multi_perform(MultiHandle, &RunningRequests);
// read more info if number of requests changed or if there's zero running
// (note that some requests might have never be "running" from libcurl's point of view)
if (RunningRequests == 0 || RunningRequests != LastRunningRequests)
{
for(;;)
{
int MsgsStillInQueue = 0; // may use that to impose some upper limit we may spend in that loop
CURLMsg * Message = curl_multi_info_read(MultiHandle, &MsgsStillInQueue);
if (Message == NULL)
{
break;
}
// find out which requests have completed
if (Message->msg == CURLMSG_DONE)
{
CURL* CompletedHandle = Message->easy_handle;
TSharedRef<IHttpRequest> * RequestRefPtr = HandlesToRequests.Find(CompletedHandle);
if (RequestRefPtr)
{
FCurlHttpRequest* CurlRequest = static_cast< FCurlHttpRequest* >( &RequestRefPtr->Get() );
CurlRequest->MarkAsCompleted(Message->data.result);
UE_LOG(LogHttp, Verbose, TEXT("Request %p (easy handle:%p) has completed (code:%d) and has been marked as such"), CurlRequest, CompletedHandle, (int32)Message->data.result);
}
else
{
UE_LOG(LogHttp, Warning, TEXT("Could not find mapping for completed request (easy handle: %p)"), CompletedHandle);
}
}
}
}
LastRunningRequests = RunningRequests;
}
// we should be outside scope lock here to be able to call parent!
return FHttpManager::Tick(DeltaSeconds);
}