- unsigned long long const ServerSize = atoll(LookupTag(Message,"Size","0").c_str());
- if (TotalSize != 0 && ServerSize != TotalSize)
+ unsigned long long const ServerSize = strtoull(LookupTag(Message,"Size","0").c_str(), NULL, 10);
+ bool isHit = StringToBool(LookupTag(Message,"IMS-Hit"),false) ||
+ StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false);
+ // Using the https method the server might return 200, but the
+ // If-Modified-Since condition is not satsified, libcurl will
+ // discard the download. In this case, however, TotalSize will be
+ // set to the actual size of the file, while ServerSize will be set
+ // to 0. Therefore, if the item is marked as a hit and the
+ // downloaded size (ServerSize) is 0, we ignore TotalSize.
+ if (TotalSize != 0 && (!isHit || ServerSize != 0) && ServerSize != TotalSize)