private void Initialize()
{
SetBoundary(GenerateBoundary());
StreamsToSend = new List<IStreamForUpload>();
FieldsToSend = new Dictionary<string, string>();
// Note: by default we suppress WindowsPhone compression on these uploads
// - as they are quite often image, audio or video files
Options[MvxKnownOptions.ForceWindowsPhoneToUseCompression] = false;
}