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@ -1,328 +0,0 @@
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using MediaBrowser.Common;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Events;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Dlna;
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using MediaBrowser.Dlna.Server;
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using MediaBrowser.Model.Logging;
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.Win32;
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namespace MediaBrowser.Dlna.Ssdp
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{
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public class SsdpHandler : IDisposable, ISsdpHandler
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{
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private Socket _multicastSocket;
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private readonly ILogger _logger;
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private readonly IServerConfigurationManager _config;
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const string SSDPAddr = "239.255.255.250";
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const int SSDPPort = 1900;
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private readonly string _serverSignature;
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private readonly IPAddress _ssdpIp = IPAddress.Parse(SSDPAddr);
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private readonly IPEndPoint _ssdpEndp = new IPEndPoint(IPAddress.Parse(SSDPAddr), SSDPPort);
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private Timer _notificationTimer;
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private bool _isDisposed;
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private readonly Dictionary<string, List<UpnpDevice>> _devices = new Dictionary<string, List<UpnpDevice>>();
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private readonly IApplicationHost _appHost;
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private readonly int _unicastPort = 1901;
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private UdpClient _unicastClient;
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public SsdpHandler(ILogger logger, IServerConfigurationManager config, IApplicationHost appHost)
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{
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_logger = logger;
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_config = config;
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_appHost = appHost;
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_config.NamedConfigurationUpdated += _config_ConfigurationUpdated;
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_serverSignature = GenerateServerSignature();
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}
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private string GenerateServerSignature()
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{
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var os = Environment.OSVersion;
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var pstring = os.Platform.ToString();
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switch (os.Platform)
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{
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case PlatformID.Win32NT:
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case PlatformID.Win32S:
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case PlatformID.Win32Windows:
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pstring = "WIN";
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break;
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}
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return String.Format(
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"{0}{1}/{2}.{3} UPnP/1.0 DLNADOC/1.5 Emby/{4}",
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pstring,
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IntPtr.Size * 8,
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os.Version.Major,
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os.Version.Minor,
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_appHost.ApplicationVersion
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);
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}
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void _config_ConfigurationUpdated(object sender, ConfigurationUpdateEventArgs e)
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{
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if (string.Equals(e.Key, "dlna", StringComparison.OrdinalIgnoreCase))
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{
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ReloadAliveNotifier();
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}
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}
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public IEnumerable<UpnpDevice> RegisteredDevices
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{
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get
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{
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lock (_devices)
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{
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var devices = _devices.ToList();
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return devices.SelectMany(i => i.Value).ToList();
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}
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}
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}
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public void Start()
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{
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DisposeSocket();
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StopAliveNotifier();
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RestartSocketListener();
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ReloadAliveNotifier();
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SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged;
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SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
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}
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void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
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{
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if (e.Mode == PowerModes.Resume)
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{
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Start();
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}
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}
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public async void SendDatagram(string msg,
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EndPoint endpoint,
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EndPoint localAddress,
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bool isBroadcast,
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int sendCount = 3)
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{
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var enableDebugLogging = _config.GetDlnaConfiguration().EnableDebugLog;
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for (var i = 0; i < sendCount; i++)
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{
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if (i > 0)
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{
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await Task.Delay(500).ConfigureAwait(false);
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}
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var dgram = new Datagram(endpoint, localAddress, _logger, msg, isBroadcast, enableDebugLogging);
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dgram.Send();
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}
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}
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private void RestartSocketListener()
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{
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if (_isDisposed)
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{
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return;
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}
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try
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{
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_multicastSocket = CreateMulticastSocket();
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_logger.Info("MultiCast socket created");
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error creating MultiCast socket", ex);
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//StartSocketRetryTimer();
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}
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}
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public void Dispose()
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{
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_config.NamedConfigurationUpdated -= _config_ConfigurationUpdated;
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SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged;
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_isDisposed = true;
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DisposeSocket();
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StopAliveNotifier();
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}
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private void DisposeSocket()
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{
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if (_multicastSocket != null)
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{
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_multicastSocket.Close();
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_multicastSocket.Dispose();
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_multicastSocket = null;
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}
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}
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private Socket CreateMulticastSocket()
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{
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var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);
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socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
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socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 4);
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socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(_ssdpIp, 0));
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socket.Bind(new IPEndPoint(IPAddress.Any, SSDPPort));
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return socket;
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}
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private void NotifyAll()
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{
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var enableDebugLogging = _config.GetDlnaConfiguration().EnableDebugLog;
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if (enableDebugLogging)
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{
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_logger.Debug("Sending alive notifications");
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}
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foreach (var d in RegisteredDevices)
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{
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NotifyDevice(d, "alive", enableDebugLogging);
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}
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}
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private void NotifyDevice(UpnpDevice dev, string type, bool logMessage)
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{
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const string header = "NOTIFY * HTTP/1.1";
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var values = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
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// If needed later for non-server devices, these headers will need to be dynamic
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values["HOST"] = "239.255.255.250:1900";
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values["CACHE-CONTROL"] = "max-age = 600";
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values["LOCATION"] = dev.Descriptor.ToString();
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values["SERVER"] = _serverSignature;
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values["NTS"] = "ssdp:" + type;
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values["NT"] = dev.Type;
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values["USN"] = dev.USN;
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if (logMessage)
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{
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_logger.Debug("{0} said {1}", dev.USN, type);
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}
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var msg = new SsdpMessageBuilder().BuildMessage(header, values);
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SendDatagram(msg, _ssdpEndp, new IPEndPoint(dev.Address, 0), true, 2);
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//SendUnicastRequest(msg, 1);
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}
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public void RegisterNotification(string uuid, Uri descriptionUri, IPAddress address, IEnumerable<string> services)
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{
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lock (_devices)
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{
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List<UpnpDevice> list;
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List<UpnpDevice> dl;
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if (_devices.TryGetValue(uuid, out dl))
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{
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list = dl;
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}
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else
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{
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list = new List<UpnpDevice>();
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_devices[uuid] = list;
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}
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list.AddRange(services.Select(i => new UpnpDevice(uuid, i, descriptionUri, address)));
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NotifyAll();
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_logger.Debug("Registered mount {0} at {1}", uuid, descriptionUri);
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}
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}
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public void UnregisterNotification(string uuid)
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{
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lock (_devices)
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{
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List<UpnpDevice> dl;
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if (_devices.TryGetValue(uuid, out dl))
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{
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_devices.Remove(uuid);
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foreach (var d in dl.ToList())
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{
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NotifyDevice(d, "byebye", true);
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}
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_logger.Debug("Unregistered mount {0}", uuid);
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}
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}
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}
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private readonly object _notificationTimerSyncLock = new object();
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private int _aliveNotifierIntervalMs;
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private void ReloadAliveNotifier()
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{
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var config = _config.GetDlnaConfiguration();
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if (!config.BlastAliveMessages)
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{
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StopAliveNotifier();
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return;
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}
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var intervalMs = config.BlastAliveMessageIntervalSeconds * 1000;
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if (_notificationTimer == null || _aliveNotifierIntervalMs != intervalMs)
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{
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lock (_notificationTimerSyncLock)
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{
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if (_notificationTimer == null)
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{
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_logger.Debug("Starting alive notifier");
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const int initialDelayMs = 3000;
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_notificationTimer = new Timer(state => NotifyAll(), null, initialDelayMs, intervalMs);
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}
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else
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{
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_logger.Debug("Updating alive notifier");
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_notificationTimer.Change(intervalMs, intervalMs);
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}
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_aliveNotifierIntervalMs = intervalMs;
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}
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}
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}
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private void StopAliveNotifier()
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{
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lock (_notificationTimerSyncLock)
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{
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if (_notificationTimer != null)
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{
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_logger.Debug("Stopping alive notifier");
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_notificationTimer.Dispose();
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_notificationTimer = null;
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}
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}
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}
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public class UdpState
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{
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public UdpClient UdpClient;
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public IPEndPoint EndPoint;
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}
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}
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}
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Luke
8 years ago
committed by
GitHub