Пример #1
0
        /// <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;
            }
        }
Пример #2
0
        /// <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;
        }