Ejemplo n.º 1
0
 /// <summary>
 /// Announces Peer to DHT with AnnounceParameters infomation.
 /// </summary>
 /// <returns>True if successful</returns>
 public void AnnouncePeer(byte[] infoHash, AnnounceParameters pars)
 {
     PeerEntry entry = new PeerEntry(pars);
       Logger.WriteLineIf(LogLevel.Verbose, _log_props,
       string.Format("Peer to be announced to DHT:\n{0}", entry.ToString()));
       AnnouncePeer(infoHash, entry);
 }
        /// <summary>
        /// Announces Peer to DHT with AnnounceParameters infomation.
        /// </summary>
        /// <returns>True if successful</returns>
        public void AnnouncePeer(byte[] infoHash, AnnounceParameters pars)
        {
            PeerEntry entry = new PeerEntry(pars);

            Logger.WriteLineIf(LogLevel.Verbose, _log_props,
                               string.Format("Peer to be announced to DHT:\n{0}", entry.ToString()));
            AnnouncePeer(infoHash, entry);
        }
        /// <summary>
        /// Gets peers from DHT.
        /// </summary>
        /// <param name="infoHash">The infoHash of the torrent, used as the name in Dht</param>
        /// <returns>
        /// A List of PeerEntries which could have duplicated peers with different
        /// states. Empty List if no peers for this infoHash or the network communication
        /// is temporarily down.
        /// </returns>
        public IEnumerable <PeerEntry> GetPeers(byte[] infoHash)
        {
            Logger.WriteLineIf(LogLevel.Verbose, _log_props,
                               string.Format("Getting peers for infoHash: {0}",
                                             ServiceUtil.GetUrlCompatibleString(infoHash)));
            ICollection <PeerEntry> peers = new List <PeerEntry>();
            // Fire DHT Get
            DictionaryServiceData results;

            try {
                byte[] key = ServiceUtil.GetUrlCompatibleBytes(infoHash);
                results = _dictSvc.Get(key);
            } catch (DictionaryServiceException ex) {
                Logger.WriteLineIf(LogLevel.Error, _log_props, string.Format(
                                       "Exception caught when retrieving peers. Returning empty peers collection.\n{0}",
                                       ex));
                // No big deal. We simply wait until the next time to query again.
                // Return empty collection.
                return(peers);
            }

            Logger.WriteLineIf(LogLevel.Info, _log_props,
                               string.Format("{0} peer(s) retrieved from DHT", results.DataEntries.Length));
            int index = 0;

            foreach (var r in results.DataEntries)
            {
                try {
                    PeerEntry entry = (PeerEntry)DictionaryData.CreateDictionaryData(r.Value);
                    Logger.WriteLineIf(LogLevel.Verbose, _log_props,
                                       string.Format("Peer entry #{0} built:\n{1}", index++, entry.ToString()));
                    peers.Add(entry);
                } catch (Exception ex) {
                    Logger.WriteLineIf(LogLevel.Error, _log_props, string.Format(
                                           "Error occurred when deserializing result from DHT. Continue to parse next.\n{0}",
                                           ex));
                    // Ignore this entry and continue to parse others.
                    continue;
                }
            }
            return(peers);
        }