/// <summary>
/// Control if there is the minimum number of uploader peers else get other uploader peers.
/// </summary>
/// <param name="download">The download object.</param>
/// <returns>Return true if there is the minimum number of the uploader peers else return false.</returns>
private static bool CheckMinNumberOfUploaderPeers(Objects.Download download)
{
if(download.ListUploaderPeers.Count < NumPeersForEachDownloads)
{
System.Random random = new Random();
while(download.ListUploaderPeers.Count < NumPeersForEachDownloads)
{
// control if there are peers that have this file
if (download.ListPeers.Count == 0)
{
download.FindPeers();
}
if (download.ListPeers.Count > download.ListUploaderPeers.Count)
{
// get a casual peer
Objects.Peer peer = download.ListPeers[random.Next(download.ListPeers.Count)];
// control if the peer is already an uploader
if (download.SearchUploaderPeer(peer.Key) == null)
{
// add the peer in the list of the uploader peers of the download
download.AddUploaderPeer(peer);
// send a FPR message to the new uploader peer
if (StartDownloadNextFilePart(download, peer) == false)
{
DownloadFirstNotDownloadedFilePack(download, peer);
}
}
}
else
{
return false;
}
}
return true;
}
else
{
return true;
}
}
/// <summary>
/// Adds a download object.
/// </summary>
/// <param name="download">The download object.</param>
public static void AddDownload(Objects.Download download)
{
download.Active = true;
download.FindPeers();
if (List.Count > 0)
{
int n = 0;
int max = List.Count - 1;
int min = 0;
int compare = 0;
while (max >= min)
{
n = (max + min) / 2;
compare = download.SHA1.CompareTo(List[n].SHA1);
if (compare > 0)
{
min = n + 1;
}
else if (compare < 0)
{
max = n - 1;
}
else
{
return;
}
}
if (compare < 0)
{
n--;
}
List.Add(List[List.Count - 1]);
for(int i = List.Count - 1; i > n + 1; i--)
{
List[i] = List[i - 1];
}
List[n + 1] = download;
}
else
{
List.Add(download);
}
NewOrUpdatedDownload = true;
}