MonoTorrent

h1. Managing Torrents

[[Managing Torrents#Example-1|Example 1]] shows how to add a torrent to the engine and start the download

[[Managing Torrents#Example-2|Example 2]] shows how to hash check a torrent and show a progress indicator

h2. Example 1

<pre><code class="java">

    class MainClass

    {

        ClientEngine engine;

        string savePath;

        // savePath is the directory where downloads will be stored

        public MainClass(string savePath)

        {

            // Create a basic ClientEngine without changing any settings

            this.engine = new ClientEngine(new EngineSettings());

            this.savePath = savePath;

        }

        public void DownloadTorrent(string path)

        {

            // Open the .torrent file

            Torrent torrent = Torrent.Load(path);

            // Create the manager which will download the torrent to savePath

            // using the default settings.

            TorrentManager manager = new TorrentManager(torrent, savePath, new TorrentSettings());

            // Register the manager with the engine

            engine.Register(manager);

            // Begin the download. It is not necessary to call HashCheck on the manager

            // before starting the download. If a hash check has not been performed, the

            // manager will enter the Hashing state and perform a hash check before it

            // begins downloading.

            // If the torrent is fully downloaded already, calling 'Start' will place

            // the manager in the Seeding state.

            manager.Start();

        }

    }

</code></pre>

h2. Example 2

<pre><code class="java">

        public void HashTorrent(TorrentManager manager)

        {

            // Note: The manager must be in the 'Stopped' state in order to perform

            // a hash check. Also, to make the sample easier the event handler

            // is not unregistered. In your application be careful you don't

            // accidentally attach a new event handler every time the torrent is hashed

            manager.PieceHashed += delegate (object o, PieceHashedEventArgs e) {

                int pieceIndex = e.PieceIndex;

                int totalPieces = e.TorrentManager.Torrent.Pieces.Count;

                double progress = (double) pieceIndex / totalPieces * 100.0;

                if (e.HashPassed)

                    Console.WriteLine("Piece {0} of {1} is complete", pieceIndex, totalPieces);

                else

                    Console.WriteLine("Piece {0} of {1} is corrupt or incomplete ", pieceIndex, totalPieces);

                // This shows how complete the hashing is.

                Console.WriteLine("Total progress is: {0}%", progress);

                // This shows the percentage completion of the download. This value

                // is updated as the torrent is hashed or new pieces are downloaded

                Console.WriteLine("{0}% of the torrent is complete");

            };

            // If 'true' is passed, the torrent will automatically go to the 'Downloading' or 'Seeding'

            // state once the hash check is finished. Otherwise it will return to the 'Stopped' state.

            manager.HashCheck(false);

        }

</code></pre>

<pre><code class="java">

ClientEngine engine = new ClientEngine(new EngineSettings(downloadsPath, port));

//DHT

DhtListener dhtListner = new UdpListener (new IPEndPoint (IPAddress.Any, port));

DhtEngine dht = new DhtEngine (dhtListner);

engine.RegisterDht(dht);

dhtListner.Start();

//byte array of dht nodes can be null if you have never connect to DHT before today!

engine.DhtEngine.Start(nodes);

torrent = Torrent.Load("test.torrent");

TorrentManager manager = new TorrentManager(torrent, downloadsPath, torrentDefaults);

//FastResume code need a BencodedDictionnary

//If you jsut start the torrent, you have no fast resume

// but if you have download a part of the torrent you can save fast resume data 

//(manager.SaveFastResume()) and restore it later to do a quicker load

manager.LoadFastResume(new FastResume (BEncDictFastResume));

engine.Register(manager);

manager.Start ();

</code>

</pre>