private void ContinueDownloadsFromPreviousTimeSlot()
{
//copy and clear out the download sections in progress
Dictionary <User, DownloadingFrom> previousDownloadSectionsInProgress = new Dictionary <User, DownloadingFrom>();
foreach (User user in _downloadSectionsInProgress.Keys)
{
previousDownloadSectionsInProgress[user] = _downloadSectionsInProgress[user];
}
_downloadSectionsInProgress = new Dictionary <User, DownloadingFrom>();
if (previousDownloadSectionsInProgress.Count > 0)
{
for (int i = previousDownloadSectionsInProgress.Count - 1; i >= 0; i--)
{
if (ConsumedDownloadBandwidth < DownloadBandwidth)
{
User user = previousDownloadSectionsInProgress.Keys.ElementAt(i);
DownloadingFrom downloadingFrom = previousDownloadSectionsInProgress[user];
double percentage = DownloadSectionFromContact(
user,
downloadingFrom.FileSection.SectionNumber,
1 - downloadingFrom.PercentageDownloaded
);
if (percentage != 1 - downloadingFrom.PercentageDownloaded)
{
downloadingFrom.PercentageDownloaded += percentage;
_downloadSectionsInProgress[user] = downloadingFrom;
}
}
}
}
}
private double DownloadSectionFromContact(User contactToDownloadFrom, int section, double percentage)
{
DownloadingFrom downloadingFrom = contactToDownloadFrom.RequestSection(this, section, percentage, VideoRate);
if (downloadingFrom == null)
{
return(0);
}
if (downloadingFrom.PercentageDownloaded == percentage)
{
ConsumedDownloadBandwidth += Functions.BandwidthNeededPerSection(VideoRate) * percentage;
_sectionsToInsert.Add(downloadingFrom.FileSection);
return(percentage);
}
else
{
ConsumedDownloadBandwidth += Functions.BandwidthNeededPerSection(VideoRate) * downloadingFrom.PercentageDownloaded;
_downloadSectionsInProgress[contactToDownloadFrom] = downloadingFrom;
return(downloadingFrom.PercentageDownloaded);
}
}