private static async Task StartEngine()
{
Logger.Factory = (string className) => new TextLogger(Console.Out, className);
int port;
Torrent torrent = null;
// Ask the user what port they want to use for incoming connections
Console.Write($"{Environment.NewLine}Choose a listen port: ");
while (!Int32.TryParse(Console.ReadLine(), out port))
{
}
// Create the settings which the engine will use
// downloadsPath - this is the path where we will save all the files to
// port - this is the port we listen for connections on
EngineSettings engineSettings = new EngineSettings {
SavePath = downloadsPath,
ListenPort = port
};
//engineSettings.GlobalMaxUploadSpeed = 30 * 1024;
//engineSettings.GlobalMaxDownloadSpeed = 100 * 1024;
//engineSettings.MaxReadRate = 1 * 1024 * 1024;
// Create the default settings which a torrent will have.
TorrentSettings torrentDefaults = new TorrentSettings();
// Create an instance of the engine.
engine = new ClientEngine(engineSettings);
byte[] nodes = Array.Empty <byte> ();
try {
if (File.Exists(dhtNodeFile))
{
nodes = File.ReadAllBytes(dhtNodeFile);
}
} catch {
Console.WriteLine("No existing dht nodes could be loaded");
}
DhtEngine dht = new DhtEngine(new IPEndPoint(IPAddress.Any, port));
await engine.RegisterDhtAsync(dht);
// This starts the Dht engine but does not wait for the full initialization to
// complete. This is because it can take up to 2 minutes to bootstrap, depending
// on how many nodes time out when they are contacted.
await engine.DhtEngine.StartAsync(nodes);
// If the SavePath does not exist, we want to create it.
if (!Directory.Exists(engine.Settings.SavePath))
{
Directory.CreateDirectory(engine.Settings.SavePath);
}
// If the torrentsPath does not exist, we want to create it
if (!Directory.Exists(torrentsPath))
{
Directory.CreateDirectory(torrentsPath);
}
BEncodedDictionary fastResume = new BEncodedDictionary();
try {
if (File.Exists(fastResumeFile))
{
fastResume = BEncodedValue.Decode <BEncodedDictionary> (File.ReadAllBytes(fastResumeFile));
}
} catch {
}
// For each file in the torrents path that is a .torrent file, load it into the engine.
foreach (string file in Directory.GetFiles(torrentsPath))
{
if (file.EndsWith(".torrent", StringComparison.OrdinalIgnoreCase))
{
try {
// Load the .torrent from the file into a Torrent instance
// You can use this to do preprocessing should you need to
torrent = await Torrent.LoadAsync(file);
Console.WriteLine(torrent.InfoHash.ToString());
} catch (Exception e) {
Console.Write("Couldn't decode {0}: ", file);
Console.WriteLine(e.Message);
continue;
}
// When any preprocessing has been completed, you create a TorrentManager
// which you then register with the engine.
TorrentManager manager = new TorrentManager(torrent, downloadsPath, torrentDefaults);
if (fastResume.ContainsKey(torrent.InfoHash.ToHex()))
{
manager.LoadFastResume(new FastResume((BEncodedDictionary)fastResume[torrent.InfoHash.ToHex()]));
}
await engine.Register(manager);
// Store the torrent manager in our list so we can access it later
torrents.Add(manager);
manager.PeersFound += Manager_PeersFound;
}
}
// If we loaded no torrents, just exist. The user can put files in the torrents directory and start
// the client again
if (torrents.Count == 0)
{
Console.WriteLine("No torrents found in the Torrents directory");
Console.WriteLine("Exiting...");
engine.Dispose();
return;
}
// For each torrent manager we loaded and stored in our list, hook into the events
// in the torrent manager and start the engine.
foreach (TorrentManager manager in torrents)
{
manager.PeerConnected += (o, e) => {
lock (listener)
listener.WriteLine($"Connection succeeded: {e.Peer.Uri}");
};
manager.ConnectionAttemptFailed += (o, e) => {
lock (listener)
listener.WriteLine(
$"Connection failed: {e.Peer.ConnectionUri} - {e.Reason} - {e.Peer.AllowedEncryption}");
};
// Every time a piece is hashed, this is fired.
manager.PieceHashed += delegate(object o, PieceHashedEventArgs e) {
lock (listener)
listener.WriteLine($"Piece Hashed: {e.PieceIndex} - {(e.HashPassed ? "Pass" : "Fail")}");
};
// Every time the state changes (Stopped -> Seeding -> Downloading -> Hashing) this is fired
manager.TorrentStateChanged += delegate(object o, TorrentStateChangedEventArgs e) {
lock (listener)
listener.WriteLine($"OldState: {e.OldState} NewState: {e.NewState}");
};
// Every time the tracker's state changes, this is fired
manager.TrackerManager.AnnounceComplete += (sender, e) => {
listener.WriteLine($"{e.Successful}: {e.Tracker}");
};
// Start the torrentmanager. The file will then hash (if required) and begin downloading/seeding
await manager.StartAsync();
}
// Enable automatic port forwarding. The engine will use Mono.Nat to search for
// uPnP or NAT-PMP compatible devices and then issue port forwarding requests to it.
await engine.EnablePortForwardingAsync(CancellationToken.None);
// This is how to access the list of port mappings, and to see if they were
// successful, pending or failed. If they failed it could be because the public port
// is already in use by another computer on your network.
foreach (var successfulMapping in engine.PortMappings.Created)
{
}
foreach (var failedMapping in engine.PortMappings.Failed)
{
}
foreach (var failedMapping in engine.PortMappings.Pending)
{
}
// While the torrents are still running, print out some stats to the screen.
// Details for all the loaded torrent managers are shown.
int i = 0;
bool running = true;
StringBuilder sb = new StringBuilder(1024);
while (running)
{
if ((i++) % 10 == 0)
{
sb.Remove(0, sb.Length);
running = torrents.Exists(m => m.State != TorrentState.Stopped);
AppendFormat(sb, "Total Download Rate: {0:0.00}kB/sec", engine.TotalDownloadSpeed / 1024.0);
AppendFormat(sb, "Total Upload Rate: {0:0.00}kB/sec", engine.TotalUploadSpeed / 1024.0);
AppendFormat(sb, "Disk Read Rate: {0:0.00} kB/s", engine.DiskManager.ReadRate / 1024.0);
AppendFormat(sb, "Disk Write Rate: {0:0.00} kB/s", engine.DiskManager.WriteRate / 1024.0);
AppendFormat(sb, "Total Read: {0:0.00} kB", engine.DiskManager.TotalRead / 1024.0);
AppendFormat(sb, "Total Written: {0:0.00} kB", engine.DiskManager.TotalWritten / 1024.0);
AppendFormat(sb, "Open Connections: {0}", engine.ConnectionManager.OpenConnections);
foreach (TorrentManager manager in torrents)
{
AppendSeparator(sb);
AppendFormat(sb, "State: {0}", manager.State);
AppendFormat(sb, "Name: {0}", manager.Torrent == null ? "MetaDataMode" : manager.Torrent.Name);
AppendFormat(sb, "Progress: {0:0.00}", manager.Progress);
AppendFormat(sb, "Download Speed: {0:0.00} kB/s", manager.Monitor.DownloadSpeed / 1024.0);
AppendFormat(sb, "Upload Speed: {0:0.00} kB/s", manager.Monitor.UploadSpeed / 1024.0);
AppendFormat(sb, "Total Downloaded: {0:0.00} MB", manager.Monitor.DataBytesDownloaded / (1024.0 * 1024.0));
AppendFormat(sb, "Total Uploaded: {0:0.00} MB", manager.Monitor.DataBytesUploaded / (1024.0 * 1024.0));
AppendFormat(sb, "Tracker Status");
foreach (var tier in manager.TrackerManager.Tiers)
{
AppendFormat(sb, $"\t{tier.ActiveTracker} : Announce Succeeded: {tier.LastAnnounceSucceeded}. Scrape Succeeded: {tier.LastScrapeSucceeded}.");
}
if (manager.PieceManager != null)
{
AppendFormat(sb, "Current Requests: {0}", await manager.PieceManager.CurrentRequestCountAsync());
}
foreach (PeerId p in await manager.GetPeersAsync())
{
AppendFormat(sb, "\t{2} - {1:0.00}/{3:0.00}kB/sec - {0}", p.Uri,
p.Monitor.DownloadSpeed / 1024.0,
p.AmRequestingPiecesCount,
p.Monitor.UploadSpeed / 1024.0);
}
AppendFormat(sb, "", null);
if (manager.Torrent != null)
{
foreach (var file in manager.Files)
{
AppendFormat(sb, "{1:0.00}% - {0}", file.Path, file.BitField.PercentComplete);
}
}
}
Console.Clear();
Console.WriteLine(sb.ToString());
listener.ExportTo(Console.Out);
}
Thread.Sleep(500);
}
// Stop searching for uPnP or NAT-PMP compatible devices and delete
// all mapppings which had been created.
await engine.DisablePortForwardingAsync(CancellationToken.None);
}
private static async Task StartEngine()
{
int port;
Torrent torrent = null;
// Ask the user what port they want to use for incoming connections
Console.Write(Environment.NewLine + "Choose a listen port: ");
while (!Int32.TryParse(Console.ReadLine(), out port))
{
}
// Create the settings which the engine will use
// downloadsPath - this is the path where we will save all the files to
// port - this is the port we listen for connections on
EngineSettings engineSettings = new EngineSettings(downloadsPath, port);
engineSettings.PreferEncryption = false;
engineSettings.AllowedEncryption = EncryptionTypes.All;
//engineSettings.GlobalMaxUploadSpeed = 30 * 1024;
//engineSettings.GlobalMaxDownloadSpeed = 100 * 1024;
//engineSettings.MaxReadRate = 1 * 1024 * 1024;
// Create the default settings which a torrent will have.
// 4 Upload slots - a good ratio is one slot per 5kB of upload speed
// 50 open connections - should never really need to be changed
// Unlimited download speed - valid range from 0 -> int.Max
// Unlimited upload speed - valid range from 0 -> int.Max
TorrentSettings torrentDefaults = new TorrentSettings(4, 150, 0, 0);
// Create an instance of the engine.
engine = new ClientEngine(engineSettings);
byte[] nodes = Array.Empty <byte> ();
try
{
nodes = File.ReadAllBytes(dhtNodeFile);
}
catch
{
Console.WriteLine("No existing dht nodes could be loaded");
}
DhtEngine dht = new DhtEngine(new IPEndPoint(IPAddress.Any, port));
await engine.RegisterDhtAsync(dht);
// This starts the Dht engine but does not wait for the full initialization to
// complete. This is because it can take up to 2 minutes to bootstrap, depending
// on how many nodes time out when they are contacted.
await engine.DhtEngine.StartAsync(nodes);
// If the SavePath does not exist, we want to create it.
if (!Directory.Exists(engine.Settings.SavePath))
{
Directory.CreateDirectory(engine.Settings.SavePath);
}
// If the torrentsPath does not exist, we want to create it
if (!Directory.Exists(torrentsPath))
{
Directory.CreateDirectory(torrentsPath);
}
BEncodedDictionary fastResume;
try
{
fastResume = BEncodedValue.Decode <BEncodedDictionary>(File.ReadAllBytes(fastResumeFile));
}
catch
{
fastResume = new BEncodedDictionary();
}
// For each file in the torrents path that is a .torrent file, load it into the engine.
foreach (string file in Directory.GetFiles(torrentsPath))
{
if (file.EndsWith(".torrent", StringComparison.OrdinalIgnoreCase))
{
try
{
// Load the .torrent from the file into a Torrent instance
// You can use this to do preprocessing should you need to
torrent = Torrent.Load(file);
Console.WriteLine(torrent.InfoHash.ToString());
}
catch (Exception e)
{
Console.Write("Couldn't decode {0}: ", file);
Console.WriteLine(e.Message);
continue;
}
// When any preprocessing has been completed, you create a TorrentManager
// which you then register with the engine.
TorrentManager manager = new TorrentManager(torrent, downloadsPath, torrentDefaults);
if (fastResume.ContainsKey(torrent.InfoHash.ToHex()))
{
manager.LoadFastResume(new FastResume((BEncodedDictionary)fastResume[torrent.InfoHash.ToHex()]));
}
await engine.Register(manager);
// Store the torrent manager in our list so we can access it later
torrents.Add(manager);
manager.PeersFound += new EventHandler <PeersAddedEventArgs>(manager_PeersFound);
}
}
// If we loaded no torrents, just exist. The user can put files in the torrents directory and start
// the client again
if (torrents.Count == 0)
{
Console.WriteLine("No torrents found in the Torrents directory");
Console.WriteLine("Exiting...");
engine.Dispose();
return;
}
// For each torrent manager we loaded and stored in our list, hook into the events
// in the torrent manager and start the engine.
foreach (TorrentManager manager in torrents)
{
// Every time a piece is hashed, this is fired.
manager.PieceHashed += delegate(object o, PieceHashedEventArgs e) {
lock (listener)
listener.WriteLine(string.Format("Piece Hashed: {0} - {1}", e.PieceIndex, e.HashPassed ? "Pass" : "Fail"));
};
// Every time the state changes (Stopped -> Seeding -> Downloading -> Hashing) this is fired
manager.TorrentStateChanged += delegate(object o, TorrentStateChangedEventArgs e) {
lock (listener)
listener.WriteLine("OldState: " + e.OldState.ToString() + " NewState: " + e.NewState.ToString());
};
// Every time the tracker's state changes, this is fired
manager.TrackerManager.AnnounceComplete += (sender, e) => {
listener.WriteLine(string.Format("{0}: {1}", e.Successful, e.Tracker));
};
// Start the torrentmanager. The file will then hash (if required) and begin downloading/seeding
await manager.StartAsync();
}
// While the torrents are still running, print out some stats to the screen.
// Details for all the loaded torrent managers are shown.
int i = 0;
bool running = true;
StringBuilder sb = new StringBuilder(1024);
while (running)
{
if ((i++) % 10 == 0)
{
sb.Remove(0, sb.Length);
running = torrents.Exists(delegate(TorrentManager m) { return(m.State != TorrentState.Stopped); });
AppendFormat(sb, "Total Download Rate: {0:0.00}kB/sec", engine.TotalDownloadSpeed / 1024.0);
AppendFormat(sb, "Total Upload Rate: {0:0.00}kB/sec", engine.TotalUploadSpeed / 1024.0);
AppendFormat(sb, "Disk Read Rate: {0:0.00} kB/s", engine.DiskManager.ReadRate / 1024.0);
AppendFormat(sb, "Disk Write Rate: {0:0.00} kB/s", engine.DiskManager.WriteRate / 1024.0);
AppendFormat(sb, "Total Read: {0:0.00} kB", engine.DiskManager.TotalRead / 1024.0);
AppendFormat(sb, "Total Written: {0:0.00} kB", engine.DiskManager.TotalWritten / 1024.0);
AppendFormat(sb, "Open Connections: {0}", engine.ConnectionManager.OpenConnections);
foreach (TorrentManager manager in torrents)
{
AppendSeperator(sb);
AppendFormat(sb, "State: {0}", manager.State);
AppendFormat(sb, "Name: {0}", manager.Torrent == null ? "MetaDataMode" : manager.Torrent.Name);
AppendFormat(sb, "Progress: {0:0.00}", manager.Progress);
AppendFormat(sb, "Download Speed: {0:0.00} kB/s", manager.Monitor.DownloadSpeed / 1024.0);
AppendFormat(sb, "Upload Speed: {0:0.00} kB/s", manager.Monitor.UploadSpeed / 1024.0);
AppendFormat(sb, "Total Downloaded: {0:0.00} MB", manager.Monitor.DataBytesDownloaded / (1024.0 * 1024.0));
AppendFormat(sb, "Total Uploaded: {0:0.00} MB", manager.Monitor.DataBytesUploaded / (1024.0 * 1024.0));
MonoTorrent.Client.Tracker.ITracker tracker = manager.TrackerManager.CurrentTracker;
//AppendFormat(sb, "Tracker Status: {0}", tracker == null ? "<no tracker>" : tracker.State.ToString());
AppendFormat(sb, "Warning Message: {0}", tracker == null ? "<no tracker>" : tracker.WarningMessage);
AppendFormat(sb, "Failure Message: {0}", tracker == null ? "<no tracker>" : tracker.FailureMessage);
if (manager.PieceManager != null)
{
AppendFormat(sb, "Current Requests: {0}", await manager.PieceManager.CurrentRequestCountAsync());
}
foreach (PeerId p in await manager.GetPeersAsync())
{
AppendFormat(sb, "\t{2} - {1:0.00}/{3:0.00}kB/sec - {0}", p.Uri,
p.Monitor.DownloadSpeed / 1024.0,
p.AmRequestingPiecesCount,
p.Monitor.UploadSpeed / 1024.0);
}
AppendFormat(sb, "", null);
if (manager.Torrent != null)
{
foreach (TorrentFile file in manager.Torrent.Files)
{
AppendFormat(sb, "{1:0.00}% - {0}", file.Path, file.BitField.PercentComplete);
}
}
}
Console.Clear();
Console.WriteLine(sb.ToString());
listener.ExportTo(Console.Out);
}
System.Threading.Thread.Sleep(500);
}
}
private static async Task StartEngine()
{
#if DEBUG
Logger.Factory = (string className) => new TextLogger(Console.Out, className);
#endif
Torrent torrent = null;
// Create an instance of the engine.
engine = new ClientEngine();
// If the torrentsPath does not exist, we want to create it
if (!Directory.Exists(torrentsPath))
{
Directory.CreateDirectory(torrentsPath);
}
// For each file in the torrents path that is a .torrent file, load it into the engine.
foreach (string file in Directory.GetFiles(torrentsPath))
{
if (file.EndsWith(".torrent", StringComparison.OrdinalIgnoreCase))
{
try {
// Load the .torrent from the file into a Torrent instance
// You can use this to do preprocessing should you need to
torrent = await Torrent.LoadAsync(file);
Console.WriteLine(torrent.InfoHash.ToString());
} catch (Exception e) {
Console.Write("Couldn't decode {0}: ", file);
Console.WriteLine(e.Message);
continue;
}
// EngineSettings.AutoSaveLoadFastResume is enabled, so any cached fast resume
// data will be implicitly loaded. If fast resume data is found, the 'hash check'
// phase of starting a torrent can be skipped.
//
// TorrentSettingsBuilder can be used to modify the settings for this
// torrent.
var manager = await engine.AddAsync(torrent, downloadsPath);
// Store the torrent manager in our list so we can access it later
torrents.Add(manager);
manager.PeersFound += Manager_PeersFound;
}
}
// If we loaded no torrents, just exist. The user can put files in the torrents directory and start
// the client again
if (torrents.Count == 0)
{
Console.WriteLine("No torrents found in the Torrents directory");
Console.WriteLine("Exiting...");
engine.Dispose();
return;
}
// For each torrent manager we loaded and stored in our list, hook into the events
// in the torrent manager and start the engine.
foreach (TorrentManager manager in torrents)
{
manager.PeerConnected += (o, e) => {
lock (listener)
listener.WriteLine($"Connection succeeded: {e.Peer.Uri}");
};
manager.ConnectionAttemptFailed += (o, e) => {
lock (listener)
listener.WriteLine(
$"Connection failed: {e.Peer.ConnectionUri} - {e.Reason}");
};
// Every time a piece is hashed, this is fired.
manager.PieceHashed += delegate(object o, PieceHashedEventArgs e) {
lock (listener)
listener.WriteLine($"Piece Hashed: {e.PieceIndex} - {(e.HashPassed ? "Pass" : "Fail")}");
};
// Every time the state changes (Stopped -> Seeding -> Downloading -> Hashing) this is fired
manager.TorrentStateChanged += delegate(object o, TorrentStateChangedEventArgs e) {
lock (listener)
listener.WriteLine($"OldState: {e.OldState} NewState: {e.NewState}");
};
// Every time the tracker's state changes, this is fired
manager.TrackerManager.AnnounceComplete += (sender, e) => {
listener.WriteLine($"{e.Successful}: {e.Tracker}");
};
// Start the torrentmanager. The file will then hash (if required) and begin downloading/seeding.
// As EngineSettings.AutoSaveLoadDhtCache is enabled, any cached data will be loaded into the
// Dht engine when the first torrent is started, enabling it to bootstrap more rapidly.
await manager.StartAsync();
}
// While the torrents are still running, print out some stats to the screen.
// Details for all the loaded torrent managers are shown.
int i = 0;
bool running = true;
StringBuilder sb = new StringBuilder(1024);
while (running)
{
if ((i++) % 10 == 0)
{
sb.Remove(0, sb.Length);
running = torrents.Exists(m => m.State != TorrentState.Stopped);
AppendFormat(sb, $"Transfer Rate: {engine.TotalDownloadSpeed / 1024.0:0.00}kB/sec down / {engine.TotalUploadSpeed / 1024.0:0.00}kB/sec up");
AppendFormat(sb, $"Memory Cache: {engine.DiskManager.CacheBytesUsed / 1024.0:0.00}/{engine.Settings.DiskCacheBytes / 1024.0:0.00} kB");
AppendFormat(sb, $"Disk IO Rate: {engine.DiskManager.ReadRate / 1024.0:0.00} kB/s read / {engine.DiskManager.WriteRate / 1024.0:0.00} kB/s write");
AppendFormat(sb, $"Disk IO Total: {engine.DiskManager.TotalBytesRead / 1024.0:0.00} kB read / {engine.DiskManager.TotalBytesWritten / 1024.0:0.00} kB written");
AppendFormat(sb, $"Open Connections: {engine.ConnectionManager.OpenConnections}");
// Print out the port mappings
foreach (var mapping in engine.PortMappings.Created)
{
AppendFormat(sb, $"Successful Mapping {mapping.PublicPort}:{mapping.PrivatePort} ({mapping.Protocol})");
}
foreach (var mapping in engine.PortMappings.Failed)
{
AppendFormat(sb, $"Failed mapping: {mapping.PublicPort}:{mapping.PrivatePort} ({mapping.Protocol})");
}
foreach (var mapping in engine.PortMappings.Pending)
{
AppendFormat(sb, $"Pending mapping: {mapping.PublicPort}:{mapping.PrivatePort} ({mapping.Protocol})");
}
foreach (TorrentManager manager in torrents)
{
AppendSeparator(sb);
AppendFormat(sb, $"State: {manager.State}");
AppendFormat(sb, $"Name: {(manager.Torrent == null ? "MetaDataMode" : manager.Torrent.Name)}");
AppendFormat(sb, $"Progress: {manager.Progress:0.00}");
AppendFormat(sb, $"Transfer Rate: {manager.Monitor.DownloadSpeed / 1024.0:0.00}kB/s down / {manager.Monitor.UploadSpeed / 1024.0:0.00} kB/s up");
AppendFormat(sb, $"Total transferred: {manager.Monitor.DataBytesDownloaded / (1024.0 * 1024.0):0.00} MB down / {manager.Monitor.DataBytesUploaded / (1024.0 * 1024.0):0.00} MB up");
AppendFormat(sb, $"Tracker Status");
foreach (var tier in manager.TrackerManager.Tiers)
{
AppendFormat(sb, $"\t{tier.ActiveTracker} : Announce Succeeded: {tier.LastAnnounceSucceeded}. Scrape Succeeded: {tier.LastScrapeSucceeded}.");
}
if (manager.PieceManager != null)
{
AppendFormat(sb, "Current Requests: {0}", await manager.PieceManager.CurrentRequestCountAsync());
}
var peers = await manager.GetPeersAsync();
AppendFormat(sb, "Outgoing:");
foreach (PeerId p in peers.Where(t => t.ConnectionDirection == Direction.Outgoing))
{
AppendFormat(sb, "\t{2} - {1:0.00}/{3:0.00}kB/sec - {0} - {4} ({5})", p.Uri,
p.Monitor.DownloadSpeed / 1024.0,
p.AmRequestingPiecesCount,
p.Monitor.UploadSpeed / 1024.0,
p.EncryptionType,
string.Join("|", p.SupportedEncryptionTypes.Select(t => t.ToString()).ToArray()));
}
AppendFormat(sb, "");
AppendFormat(sb, "Incoming:");
foreach (PeerId p in peers.Where(t => t.ConnectionDirection == Direction.Incoming))
{
AppendFormat(sb, "\t{2} - {1:0.00}/{3:0.00}kB/sec - {0} - {4} ({5})", p.Uri,
p.Monitor.DownloadSpeed / 1024.0,
p.AmRequestingPiecesCount,
p.Monitor.UploadSpeed / 1024.0,
p.EncryptionType,
string.Join("|", p.SupportedEncryptionTypes.Select(t => t.ToString()).ToArray()));
}
AppendFormat(sb, "", null);
if (manager.Torrent != null)
{
foreach (var file in manager.Files)
{
AppendFormat(sb, "{1:0.00}% - {0}", file.Path, file.BitField.PercentComplete);
}
}
}
Console.Clear();
Console.WriteLine(sb.ToString());
listener.ExportTo(Console.Out);
}
Thread.Sleep(500);
}
}
private static async Task StartEngine()
{
int port;
Torrent torrent = null;
// Ask the user what port they want to use for incoming connections
// 询问用户要将使用哪个端口用于连接
Console.Write($"{Environment.NewLine} 选择监听的端口: ");
while (!Int32.TryParse(Console.ReadLine(), out port))
{
}
// 创建一个引擎的默认配置
// downloadsPath - 文件下载的目录
// port - 引擎监听的端口
EngineSettings engineSettings = new EngineSettings {
SavePath = downloadsPath,
ListenPort = port
};
//engineSettings.GlobalMaxUploadSpeed = 30 * 1024;
//engineSettings.GlobalMaxDownloadSpeed = 100 * 1024;
//engineSettings.MaxReadRate = 1 * 1024 * 1024;
// 创建一个 Torrent 默认的配置信息.
TorrentSettings torrentDefaults = new TorrentSettings();
// 创建一个客户端引擎.
engine = new ClientEngine(engineSettings);
byte[] nodes = Array.Empty <byte> ();
try {
if (File.Exists(dhtNodeFile))
{
nodes = File.ReadAllBytes(dhtNodeFile);
}
} catch {
Console.WriteLine("No existing dht nodes could be loaded");
}
DhtEngine dht = new DhtEngine(new IPEndPoint(IPAddress.Any, port));
await engine.RegisterDhtAsync(dht);
// 这将启动Dht引擎,但不会等待完全初始化完成.
// 这是因为根据连接节点时超时的数量,启动最多需要2分钟.
await engine.DhtEngine.StartAsync(nodes);
// 如果下载路径不存在,则创建之.
if (!Directory.Exists(engine.Settings.SavePath))
{
Directory.CreateDirectory(engine.Settings.SavePath);
}
// 如果Torrent存储目录不存在,则创建之.
if (!Directory.Exists(torrentsPath))
{
Directory.CreateDirectory(torrentsPath);
}
BEncodedDictionary fastResume = new BEncodedDictionary();
try {
if (File.Exists(fastResumeFile))
{
fastResume = BEncodedValue.Decode <BEncodedDictionary> (File.ReadAllBytes(fastResumeFile));
}
} catch {
}
// 将Torrents目录中的每个 torrent 文件将其加载到引擎中.
foreach (string file in Directory.GetFiles(torrentsPath))
{
if (file.EndsWith(".torrent", StringComparison.OrdinalIgnoreCase))
{
try {
// 加载torrent文件到Torrent实例中,如果需要的话,可以使用它进行预处理
torrent = await Torrent.LoadAsync(file);
Console.WriteLine(torrent.InfoHash.ToString());
} catch (Exception e) {
Console.Write("Couldn't decode {0}: ", file);
Console.WriteLine(e.Message);
continue;
}
// 当任何预处理完成后,您将创建一个TorrentManager,然后在引擎上创建它.
TorrentManager manager = new TorrentManager(torrent, downloadsPath, torrentDefaults);
if (fastResume.ContainsKey(torrent.InfoHash.ToHex()))
{
manager.LoadFastResume(new FastResume((BEncodedDictionary)fastResume[torrent.InfoHash.ToHex()]));
}
await engine.Register(manager);
// 将 TorrentManager 存储在列表中,方便以后访问它.
torrents.Add(manager);
manager.PeersFound += Manager_PeersFound;
}
}
// If we loaded no torrents, just exist. The user can put files in the torrents directory and start the client again
if (torrents.Count == 0)
{
Console.WriteLine("没有在目录中找到 torrent 文件");
Console.WriteLine("退出...");
engine.Dispose();
return;
}
// 遍历存储在列表中的每个TorrentManager,在TorrentManager中连接到事件并启动引擎。
foreach (TorrentManager manager in torrents)
{
manager.PeerConnected += (o, e) => {
lock (listener)
listener.WriteLine($"连接成功: {e.Peer.Uri}");
};
manager.ConnectionAttemptFailed += (o, e) => {
lock (listener)
listener.WriteLine(
$"连接失败: {e.Peer.ConnectionUri} - {e.Reason} - {e.Peer.AllowedEncryption}");
};
// 每次散列一个片段,就会触发这个.
manager.PieceHashed += delegate(object o, PieceHashedEventArgs e) {
lock (listener)
listener.WriteLine($"散列的片段: {e.PieceIndex} - {(e.HashPassed ? "Pass" : "Fail")}");
};
// 每当状态改变时触发 (Stopped -> Seeding -> Downloading -> Hashing)
manager.TorrentStateChanged += delegate(object o, TorrentStateChangedEventArgs e) {
lock (listener)
listener.WriteLine($"旧状态: {e.OldState} 新状态: {e.NewState}");
};
// 每当跟踪器的状态改变时,就会触发.
manager.TrackerManager.AnnounceComplete += (sender, e) => {
listener.WriteLine($"{e.Successful}: {e.Tracker}");
};
// 开始运行TorrentManager.
// 然后文件将散列(如果需要)并开始下载/发送.
await manager.StartAsync();
}
// Enable automatic port forwarding. The engine will use Mono.Nat to search for
// uPnP or NAT-PMP compatible devices and then issue port forwarding requests to it.
await engine.EnablePortForwardingAsync(CancellationToken.None);
// This is how to access the list of port mappings, and to see if they were
// successful, pending or failed. If they failed it could be because the public port
// is already in use by another computer on your network.
foreach (var successfulMapping in engine.PortMappings.Created)
{
}
foreach (var failedMapping in engine.PortMappings.Failed)
{
}
foreach (var failedMapping in engine.PortMappings.Pending)
{
}
// While the torrents are still running, print out some stats to the screen.
// Details for all the loaded torrent managers are shown.
int i = 0;
bool running = true;
StringBuilder sb = new StringBuilder(1024);
while (running)
{
if ((i++) % 10 == 0)
{
sb.Remove(0, sb.Length);
running = torrents.Exists(m => m.State != TorrentState.Stopped);
AppendFormat(sb, "Total Download Rate: {0:0.00}kB/sec", engine.TotalDownloadSpeed / 1024.0);
AppendFormat(sb, "Total Upload Rate: {0:0.00}kB/sec", engine.TotalUploadSpeed / 1024.0);
AppendFormat(sb, "Disk Read Rate: {0:0.00} kB/s", engine.DiskManager.ReadRate / 1024.0);
AppendFormat(sb, "Disk Write Rate: {0:0.00} kB/s", engine.DiskManager.WriteRate / 1024.0);
AppendFormat(sb, "Total Read: {0:0.00} kB", engine.DiskManager.TotalRead / 1024.0);
AppendFormat(sb, "Total Written: {0:0.00} kB", engine.DiskManager.TotalWritten / 1024.0);
AppendFormat(sb, "Open Connections: {0}", engine.ConnectionManager.OpenConnections);
foreach (TorrentManager manager in torrents)
{
AppendSeparator(sb);
AppendFormat(sb, "State: {0}", manager.State);
AppendFormat(sb, "Name: {0}", manager.Torrent == null ? "MetaDataMode" : manager.Torrent.Name);
AppendFormat(sb, "Progress: {0:0.00}", manager.Progress);
AppendFormat(sb, "Download Speed: {0:0.00} kB/s", manager.Monitor.DownloadSpeed / 1024.0);
AppendFormat(sb, "Upload Speed: {0:0.00} kB/s", manager.Monitor.UploadSpeed / 1024.0);
AppendFormat(sb, "Total Downloaded: {0:0.00} MB", manager.Monitor.DataBytesDownloaded / (1024.0 * 1024.0));
AppendFormat(sb, "Total Uploaded: {0:0.00} MB", manager.Monitor.DataBytesUploaded / (1024.0 * 1024.0));
AppendFormat(sb, "Tracker Status");
foreach (var tier in manager.TrackerManager.Tiers)
{
AppendFormat(sb, $"\t{tier.ActiveTracker} : Announce Succeeded: {tier.LastAnnounceSucceeded}. Scrape Succeeded: {tier.LastScrapSucceeded}.");
}
if (manager.PieceManager != null)
{
AppendFormat(sb, "Current Requests: {0}", await manager.PieceManager.CurrentRequestCountAsync());
}
foreach (PeerId p in await manager.GetPeersAsync())
{
AppendFormat(sb, "\t{2} - {1:0.00}/{3:0.00}kB/sec - {0}", p.Uri,
p.Monitor.DownloadSpeed / 1024.0,
p.AmRequestingPiecesCount,
p.Monitor.UploadSpeed / 1024.0);
}
AppendFormat(sb, "", null);
if (manager.Torrent != null)
{
foreach (TorrentFile file in manager.Torrent.Files)
{
AppendFormat(sb, "{1:0.00}% - {0}", file.Path, file.BitField.PercentComplete);
}
}
}
Console.Clear();
Console.WriteLine(sb.ToString());
listener.ExportTo(Console.Out);
}
Thread.Sleep(500);
}
// 停止搜索与uPnP或NAT-PMP兼容的设备,并删除所有已创建的映射.
await engine.DisablePortForwardingAsync(CancellationToken.None);
}