public async Task Start(string baseurl, string guid, Manifest manifest, Media media, CancellationToken token,IProgress<double> progress)
{
this.media = media;
this.guid = guid;
this.baseurl = baseurl;
this.bootstrap = media.Info.Info;
this.manifest = manifest;
await InitFile();
await DoNextFragment();
progress.Report((double)bootstrap.CurrentFragmentWrite * 100D/(double)bootstrap.FragmentCount);
token.ThrowIfCancellationRequested();
await ThreadProcessor(token, progress);
token.ThrowIfCancellationRequested();
}
