move classes to new server project

Emby.Server.Implementations/Connect/ConnectData.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+
+namespace Emby.Server.Implementations.Connect
+{
+    public class ConnectData
+    {
+        /// <summary>
+        /// Gets or sets the server identifier.
+        /// </summary>
+        /// <value>The server identifier.</value>
+        public string ServerId { get; set; }
+        /// <summary>
+        /// Gets or sets the access key.
+        /// </summary>
+        /// <value>The access key.</value>
+        public string AccessKey { get; set; }
+
+        /// <summary>
+        /// Gets or sets the authorizations.
+        /// </summary>
+        /// <value>The authorizations.</value>
+        public List<ConnectAuthorizationInternal> PendingAuthorizations { get; set; }
+
+        /// <summary>
+        /// Gets or sets the last authorizations refresh.
+        /// </summary>
+        /// <value>The last authorizations refresh.</value>
+        public DateTime LastAuthorizationsRefresh { get; set; }
+
+        public ConnectData()
+        {
+            PendingAuthorizations = new List<ConnectAuthorizationInternal>();
+        }
+    }
+}

Emby.Server.Implementations/Connect/ConnectEntryPoint.cs

@@ -0,0 +1,199 @@
+using MediaBrowser.Common;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller.Connect;
+using MediaBrowser.Controller.Plugins;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Net;
+using System;
+using System.IO;
+using System.Text;
+using System.Threading.Tasks;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Threading;
+
+namespace Emby.Server.Implementations.Connect
+{
+    public class ConnectEntryPoint : IServerEntryPoint
+    {
+        private ITimer _timer;
+        private readonly IHttpClient _httpClient;
+        private readonly IApplicationPaths _appPaths;
+        private readonly ILogger _logger;
+        private readonly IConnectManager _connectManager;
+
+        private readonly INetworkManager _networkManager;
+        private readonly IApplicationHost _appHost;
+        private readonly IFileSystem _fileSystem;
+        private readonly ITimerFactory _timerFactory;
+
+        public ConnectEntryPoint(IHttpClient httpClient, IApplicationPaths appPaths, ILogger logger, INetworkManager networkManager, IConnectManager connectManager, IApplicationHost appHost, IFileSystem fileSystem, ITimerFactory timerFactory)
+        {
+            _httpClient = httpClient;
+            _appPaths = appPaths;
+            _logger = logger;
+            _networkManager = networkManager;
+            _connectManager = connectManager;
+            _appHost = appHost;
+            _fileSystem = fileSystem;
+            _timerFactory = timerFactory;
+        }
+
+        public void Run()
+        {
+            LoadCachedAddress();
+
+            _timer = _timerFactory.Create(TimerCallback, null, TimeSpan.FromSeconds(5), TimeSpan.FromHours(1));
+            ((ConnectManager)_connectManager).Start();
+        }
+
+        private readonly string[] _ipLookups =
+        {
+            "http://bot.whatismyipaddress.com",
+            "https://connect.emby.media/service/ip"
+        };
+
+        private async void TimerCallback(object state)
+        {
+            IpAddressInfo validIpAddress = null;
+
+            foreach (var ipLookupUrl in _ipLookups)
+            {
+                try
+                {
+                    validIpAddress = await GetIpAddress(ipLookupUrl).ConfigureAwait(false);
+
+                    // Try to find the ipv4 address, if present
+                    if (!validIpAddress.IsIpv6)
+                    {
+                        break;
+                    }
+                }
+                catch (HttpException)
+                {
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error getting connection info", ex);
+                }
+            }
+
+            // If this produced an ipv6 address, try again
+            if (validIpAddress != null && validIpAddress.IsIpv6)
+            {
+                foreach (var ipLookupUrl in _ipLookups)
+                {
+                    try
+                    {
+                        var newAddress = await GetIpAddress(ipLookupUrl, true).ConfigureAwait(false);
+
+                        // Try to find the ipv4 address, if present
+                        if (!newAddress.IsIpv6)
+                        {
+                            validIpAddress = newAddress;
+                            break;
+                        }
+                    }
+                    catch (HttpException)
+                    {
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.ErrorException("Error getting connection info", ex);
+                    }
+                }
+            }
+
+            if (validIpAddress != null)
+            {
+                ((ConnectManager)_connectManager).OnWanAddressResolved(validIpAddress);
+                CacheAddress(validIpAddress);
+            }
+        }
+
+        private async Task<IpAddressInfo> GetIpAddress(string lookupUrl, bool preferIpv4 = false)
+        {
+            // Sometimes whatismyipaddress might fail, but it won't do us any good having users raise alarms over it.
+            var logErrors = false;
+
+#if DEBUG
+            logErrors = true;
+#endif
+            using (var stream = await _httpClient.Get(new HttpRequestOptions
+            {
+                Url = lookupUrl,
+                UserAgent = "Emby/" + _appHost.ApplicationVersion,
+                LogErrors = logErrors,
+
+                // Seeing block length errors with our server
+                EnableHttpCompression = false,
+                PreferIpv4 = preferIpv4,
+                BufferContent = false
+
+            }).ConfigureAwait(false))
+            {
+                using (var reader = new StreamReader(stream))
+                {
+                    var addressString = await reader.ReadToEndAsync().ConfigureAwait(false);
+
+                    return _networkManager.ParseIpAddress(addressString);
+                }
+            }
+        }
+
+        private string CacheFilePath
+        {
+            get { return Path.Combine(_appPaths.DataPath, "wan.txt"); }
+        }
+
+        private void CacheAddress(IpAddressInfo address)
+        {
+            var path = CacheFilePath;
+
+            try
+            {
+                _fileSystem.CreateDirectory(Path.GetDirectoryName(path));
+                _fileSystem.WriteAllText(path, address.ToString(), Encoding.UTF8);
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error saving data", ex);
+            }
+        }
+
+        private void LoadCachedAddress()
+        {
+            var path = CacheFilePath;
+
+            _logger.Info("Loading data from {0}", path);
+
+            try
+            {
+                var endpoint = _fileSystem.ReadAllText(path, Encoding.UTF8);
+                IpAddressInfo ipAddress;
+
+                if (_networkManager.TryParseIpAddress(endpoint, out ipAddress))
+                {
+                    ((ConnectManager)_connectManager).OnWanAddressResolved(ipAddress);
+                }
+            }
+            catch (IOException)
+            {
+                // File isn't there. no biggie
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error loading data", ex);
+            }
+        }
+
+        public void Dispose()
+        {
+            if (_timer != null)
+            {
+                _timer.Dispose();
+                _timer = null;
+            }
+        }
+    }
+}

Emby.Server.Implementations/Connect/Responses.cs

@@ -0,0 +1,85 @@
+using MediaBrowser.Model.Configuration;
+using MediaBrowser.Model.Connect;
+
+namespace Emby.Server.Implementations.Connect
+{
+    public class ServerRegistrationResponse
+    {
+        public string Id { get; set; }
+        public string Url { get; set; }
+        public string Name { get; set; }
+        public string AccessKey { get; set; }
+    }
+
+    public class UpdateServerRegistrationResponse
+    {
+        public string Id { get; set; }
+        public string Url { get; set; }
+        public string Name { get; set; }
+    }
+
+    public class GetConnectUserResponse
+    {
+        public string Id { get; set; }
+        public string Name { get; set; }
+        public string DisplayName { get; set; }
+        public string Email { get; set; }
+        public bool IsActive { get; set; }
+        public string ImageUrl { get; set; }
+    }
+
+    public class ServerUserAuthorizationResponse
+    {
+        public string Id { get; set; }
+        public string ServerId { get; set; }
+        public string UserId { get; set; }
+        public string AccessToken { get; set; }
+        public string DateCreated { get; set; }
+        public bool IsActive { get; set; }
+        public string AcceptStatus { get; set; }
+        public string UserType { get; set; }
+        public string UserImageUrl { get; set; }
+        public string UserName { get; set; }
+    }
+
+    public class ConnectUserPreferences
+    {
+        public string[] PreferredAudioLanguages { get; set; }
+        public bool PlayDefaultAudioTrack { get; set; }
+        public string[] PreferredSubtitleLanguages { get; set; }
+        public SubtitlePlaybackMode SubtitleMode { get; set; }
+        public bool GroupMoviesIntoBoxSets { get; set; }
+
+        public ConnectUserPreferences()
+        {
+            PreferredAudioLanguages = new string[] { };
+            PreferredSubtitleLanguages = new string[] { };
+        }
+
+        public static ConnectUserPreferences FromUserConfiguration(UserConfiguration config)
+        {
+            return new ConnectUserPreferences
+            {
+                PlayDefaultAudioTrack = config.PlayDefaultAudioTrack,
+                SubtitleMode = config.SubtitleMode,
+                PreferredAudioLanguages = string.IsNullOrWhiteSpace(config.AudioLanguagePreference) ? new string[] { } : new[] { config.AudioLanguagePreference },
+                PreferredSubtitleLanguages = string.IsNullOrWhiteSpace(config.SubtitleLanguagePreference) ? new string[] { } : new[] { config.SubtitleLanguagePreference }
+            };
+        }
+
+        public void MergeInto(UserConfiguration config)
+        {
+
+        }
+    }
+
+    public class UserPreferencesDto<T>
+    {
+        public T data { get; set; }
+    }
+
+    public class ConnectAuthorizationInternal : ConnectAuthorization
+    {
+        public string AccessToken { get; set; }
+    }
+}

Emby.Server.Implementations/Connect/Validator.cs

@@ -0,0 +1,29 @@
+using System.Text.RegularExpressions;
+
+namespace Emby.Server.Implementations.Connect
+{
+    public static class Validator
+    {
+        static readonly Regex ValidEmailRegex = CreateValidEmailRegex();
+
+        /// <summary>
+        /// Taken from http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx
+        /// </summary>
+        /// <returns></returns>
+        private static Regex CreateValidEmailRegex()
+        {
+            const string validEmailPattern = @"^(?!\.)(""([^""\r\\]|\\[""\r\\])*""|"
+                                             + @"([-a-z0-9!#$%&'*+/=?^_`{|}~]|(?<!\.)\.)*)(?<!\.)"
+                                             + @"@[a-z0-9][\w\.-]*[a-z0-9]\.[a-z][a-z\.]*[a-z]$";
+
+            return new Regex(validEmailPattern, RegexOptions.IgnoreCase);
+        }
+
+        internal static bool EmailIsValid(string emailAddress)
+        {
+            bool isValid = ValidEmailRegex.IsMatch(emailAddress);
+
+            return isValid;
+        }
+    }
+}

Emby.Server.Implementations/Emby.Server.Implementations.csproj

@@ -43,6 +43,11 @@
     <Compile Include="Channels\RefreshChannelsScheduledTask.cs" />
     <Compile Include="Collections\CollectionImageProvider.cs" />
     <Compile Include="Collections\CollectionManager.cs" />
+    <Compile Include="Connect\ConnectData.cs" />
+    <Compile Include="Connect\ConnectEntryPoint.cs" />
+    <Compile Include="Connect\ConnectManager.cs" />
+    <Compile Include="Connect\Responses.cs" />
+    <Compile Include="Connect\Validator.cs" />
     <Compile Include="Devices\DeviceManager.cs" />
     <Compile Include="Dto\DtoService.cs" />
     <Compile Include="EntryPoints\AutomaticRestartEntryPoint.cs" />
@@ -51,6 +56,7 @@
     <Compile Include="EntryPoints\RecordingNotifier.cs" />
     <Compile Include="EntryPoints\RefreshUsersMetadata.cs" />
     <Compile Include="EntryPoints\ServerEventNotifier.cs" />
+    <Compile Include="EntryPoints\UdpServerEntryPoint.cs" />
     <Compile Include="EntryPoints\UsageEntryPoint.cs" />
     <Compile Include="EntryPoints\UsageReporter.cs" />
     <Compile Include="EntryPoints\UserDataChangeNotifier.cs" />
@@ -68,6 +74,7 @@
     <Compile Include="HttpServer\StreamWriter.cs" />
     <Compile Include="Images\BaseDynamicImageProvider.cs" />
     <Compile Include="Intros\DefaultIntroProvider.cs" />
+    <Compile Include="IO\FileRefresher.cs" />
     <Compile Include="IO\ThrottledStream.cs" />
     <Compile Include="Library\CoreResolutionIgnoreRule.cs" />
     <Compile Include="Library\LibraryManager.cs" />
@@ -159,6 +166,7 @@
     <Compile Include="ScheduledTasks\RefreshIntrosTask.cs" />
     <Compile Include="ScheduledTasks\RefreshMediaLibraryTask.cs" />
     <Compile Include="ScheduledTasks\SystemUpdateTask.cs" />
+    <Compile Include="Security\EncryptionManager.cs" />
     <Compile Include="Security\MBLicenseFile.cs" />
     <Compile Include="Security\PluginSecurityManager.cs" />
     <Compile Include="Security\RegRecord.cs" />
@@ -217,6 +225,7 @@
     <Compile Include="Sync\TargetDataProvider.cs" />
     <Compile Include="TV\SeriesPostScanTask.cs" />
     <Compile Include="TV\TVSeriesManager.cs" />
+    <Compile Include="Udp\UdpServer.cs" />
     <Compile Include="Updates\InstallationManager.cs" />
     <Compile Include="UserViews\CollectionFolderImageProvider.cs" />
     <Compile Include="UserViews\DynamicImageProvider.cs" />

Emby.Server.Implementations/EntryPoints/UdpServerEntryPoint.cs

@@ -0,0 +1,85 @@
+using System;
+using MediaBrowser.Controller;
+using MediaBrowser.Controller.Plugins;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Serialization;
+using Emby.Server.Implementations.Udp;
+using MediaBrowser.Model.Net;
+
+namespace Emby.Server.Implementations.EntryPoints
+{
+    /// <summary>
+    /// Class UdpServerEntryPoint
+    /// </summary>
+    public class UdpServerEntryPoint : IServerEntryPoint
+    {
+        /// <summary>
+        /// Gets or sets the UDP server.
+        /// </summary>
+        /// <value>The UDP server.</value>
+        private UdpServer UdpServer { get; set; }
+
+        /// <summary>
+        /// The _logger
+        /// </summary>
+        private readonly ILogger _logger;
+        private readonly ISocketFactory _socketFactory;
+        private readonly IServerApplicationHost _appHost;
+        private readonly IJsonSerializer _json;
+
+        public const int PortNumber = 7359;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="UdpServerEntryPoint" /> class.
+        /// </summary>
+        public UdpServerEntryPoint(ILogger logger, IServerApplicationHost appHost, IJsonSerializer json, ISocketFactory socketFactory)
+        {
+            _logger = logger;
+            _appHost = appHost;
+            _json = json;
+            _socketFactory = socketFactory;
+        }
+
+        /// <summary>
+        /// Runs this instance.
+        /// </summary>
+        public void Run()
+        {
+            var udpServer = new UdpServer(_logger, _appHost, _json, _socketFactory);
+
+            try
+            {
+                udpServer.Start(PortNumber);
+
+                UdpServer = udpServer;
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Failed to start UDP Server", ex);
+            }
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool dispose)
+        {
+            if (dispose)
+            {
+                if (UdpServer != null)
+                {
+                    UdpServer.Dispose();
+                }
+            }
+        }
+    }
+}

Emby.Server.Implementations/IO/FileRefresher.cs

@@ -0,0 +1,323 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Common.Events;
+using MediaBrowser.Common.IO;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.IO;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Extensions;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Tasks;
+using MediaBrowser.Model.Threading;
+
+namespace Emby.Server.Implementations.IO
+{
+    public class FileRefresher : IDisposable
+    {
+        private ILogger Logger { get; set; }
+        private ITaskManager TaskManager { get; set; }
+        private ILibraryManager LibraryManager { get; set; }
+        private IServerConfigurationManager ConfigurationManager { get; set; }
+        private readonly IFileSystem _fileSystem;
+        private readonly List<string> _affectedPaths = new List<string>();
+        private ITimer _timer;
+        private readonly ITimerFactory _timerFactory;
+        private readonly object _timerLock = new object();
+        public string Path { get; private set; }
+
+        public event EventHandler<EventArgs> Completed;
+
+        public FileRefresher(string path, IFileSystem fileSystem, IServerConfigurationManager configurationManager, ILibraryManager libraryManager, ITaskManager taskManager, ILogger logger, ITimerFactory timerFactory)
+        {
+            logger.Debug("New file refresher created for {0}", path);
+            Path = path;
+
+            _fileSystem = fileSystem;
+            ConfigurationManager = configurationManager;
+            LibraryManager = libraryManager;
+            TaskManager = taskManager;
+            Logger = logger;
+            _timerFactory = timerFactory;
+            AddPath(path);
+        }
+
+        private void AddAffectedPath(string path)
+        {
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentNullException("path");
+            }
+
+            if (!_affectedPaths.Contains(path, StringComparer.Ordinal))
+            {
+                _affectedPaths.Add(path);
+            }
+        }
+
+        public void AddPath(string path)
+        {
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentNullException("path");
+            }
+
+            lock (_timerLock)
+            {
+                AddAffectedPath(path);
+            }
+            RestartTimer();
+        }
+
+        public void RestartTimer()
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            lock (_timerLock)
+            {
+                if (_disposed)
+                {
+                    return;
+                }
+
+                if (_timer == null)
+                {
+                    _timer = _timerFactory.Create(OnTimerCallback, null, TimeSpan.FromSeconds(ConfigurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
+                }
+                else
+                {
+                    _timer.Change(TimeSpan.FromSeconds(ConfigurationManager.Configuration.LibraryMonitorDelay), TimeSpan.FromMilliseconds(-1));
+                }
+            }
+        }
+
+        public void ResetPath(string path, string affectedFile)
+        {
+            lock (_timerLock)
+            {
+                Logger.Debug("Resetting file refresher from {0} to {1}", Path, path);
+
+                Path = path;
+                AddAffectedPath(path);
+
+                if (!string.IsNullOrWhiteSpace(affectedFile))
+                {
+                    AddAffectedPath(affectedFile);
+                }
+            }
+            RestartTimer();
+        }
+
+        private async void OnTimerCallback(object state)
+        {
+            List<string> paths;
+
+            lock (_timerLock)
+            {
+                paths = _affectedPaths.ToList();
+            }
+
+            // Extend the timer as long as any of the paths are still being written to.
+            if (paths.Any(IsFileLocked))
+            {
+                Logger.Info("Timer extended.");
+                RestartTimer();
+                return;
+            }
+
+            Logger.Debug("Timer stopped.");
+
+            DisposeTimer();
+            EventHelper.FireEventIfNotNull(Completed, this, EventArgs.Empty, Logger);
+
+            try
+            {
+                await ProcessPathChanges(paths.ToList()).ConfigureAwait(false);
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error processing directory changes", ex);
+            }
+        }
+
+        private async Task ProcessPathChanges(List<string> paths)
+        {
+            var itemsToRefresh = paths
+                .Distinct(StringComparer.OrdinalIgnoreCase)
+                .Select(GetAffectedBaseItem)
+                .Where(item => item != null)
+                .DistinctBy(i => i.Id)
+                .ToList();
+
+            foreach (var p in paths)
+            {
+                Logger.Info(p + " reports change.");
+            }
+
+            // If the root folder changed, run the library task so the user can see it
+            if (itemsToRefresh.Any(i => i is AggregateFolder))
+            {
+                LibraryManager.ValidateMediaLibrary(new Progress<double>(), CancellationToken.None);
+                return;
+            }
+
+            foreach (var item in itemsToRefresh)
+            {
+                Logger.Info(item.Name + " (" + item.Path + ") will be refreshed.");
+
+                try
+                {
+                    await item.ChangedExternally().ConfigureAwait(false);
+                }
+                catch (IOException ex)
+                {
+                    // For now swallow and log. 
+                    // Research item: If an IOException occurs, the item may be in a disconnected state (media unavailable)
+                    // Should we remove it from it's parent?
+                    Logger.ErrorException("Error refreshing {0}", ex, item.Name);
+                }
+                catch (Exception ex)
+                {
+                    Logger.ErrorException("Error refreshing {0}", ex, item.Name);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets the affected base item.
+        /// </summary>
+        /// <param name="path">The path.</param>
+        /// <returns>BaseItem.</returns>
+        private BaseItem GetAffectedBaseItem(string path)
+        {
+            BaseItem item = null;
+
+            while (item == null && !string.IsNullOrEmpty(path))
+            {
+                item = LibraryManager.FindByPath(path, null);
+
+                path = System.IO.Path.GetDirectoryName(path);
+            }
+
+            if (item != null)
+            {
+                // If the item has been deleted find the first valid parent that still exists
+                while (!_fileSystem.DirectoryExists(item.Path) && !_fileSystem.FileExists(item.Path))
+                {
+                    item = item.GetParent();
+
+                    if (item == null)
+                    {
+                        break;
+                    }
+                }
+            }
+
+            return item;
+        }
+
+        private bool IsFileLocked(string path)
+        {
+            //if (Environment.OSVersion.Platform != PlatformID.Win32NT)
+            //{
+            //    // Causing lockups on linux
+            //    return false;
+            //}
+
+            try
+            {
+                var data = _fileSystem.GetFileSystemInfo(path);
+
+                if (!data.Exists
+                    || data.IsDirectory
+
+                    // Opening a writable stream will fail with readonly files
+                    || data.IsReadOnly)
+                {
+                    return false;
+                }
+            }
+            catch (IOException)
+            {
+                return false;
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error getting file system info for: {0}", ex, path);
+                return false;
+            }
+
+            // In order to determine if the file is being written to, we have to request write access
+            // But if the server only has readonly access, this is going to cause this entire algorithm to fail
+            // So we'll take a best guess about our access level
+            var requestedFileAccess = ConfigurationManager.Configuration.SaveLocalMeta
+                ? FileAccessMode.ReadWrite
+                : FileAccessMode.Read;
+
+            try
+            {
+                using (_fileSystem.GetFileStream(path, FileOpenMode.Open, requestedFileAccess, FileShareMode.ReadWrite))
+                {
+                    //file is not locked
+                    return false;
+                }
+            }
+            //catch (DirectoryNotFoundException)
+            //{
+            //    // File may have been deleted
+            //    return false;
+            //}
+            catch (FileNotFoundException)
+            {
+                // File may have been deleted
+                return false;
+            }
+            catch (UnauthorizedAccessException)
+            {
+                Logger.Debug("No write permission for: {0}.", path);
+                return false;
+            }
+            catch (IOException)
+            {
+                //the file is unavailable because it is:
+                //still being written to
+                //or being processed by another thread
+                //or does not exist (has already been processed)
+                Logger.Debug("{0} is locked.", path);
+                return true;
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error determining if file is locked: {0}", ex, path);
+                return false;
+            }
+        }
+
+        private void DisposeTimer()
+        {
+            lock (_timerLock)
+            {
+                if (_timer != null)
+                {
+                    _timer.Dispose();
+                    _timer = null;
+                }
+            }
+        }
+
+        private bool _disposed;
+        public void Dispose()
+        {
+            _disposed = true;
+            DisposeTimer();
+        }
+    }
+}

Emby.Server.Implementations/Security/EncryptionManager.cs

@@ -0,0 +1,51 @@
+using MediaBrowser.Controller.Security;
+using System;
+using System.Text;
+
+namespace Emby.Server.Implementations.Security
+{
+    public class EncryptionManager : IEncryptionManager
+    {
+        /// <summary>
+        /// Encrypts the string.
+        /// </summary>
+        /// <param name="value">The value.</param>
+        /// <returns>System.String.</returns>
+        /// <exception cref="System.ArgumentNullException">value</exception>
+        public string EncryptString(string value)
+        {
+            if (value == null) throw new ArgumentNullException("value");
+
+            return EncryptStringUniversal(value);
+        }
+
+        /// <summary>
+        /// Decrypts the string.
+        /// </summary>
+        /// <param name="value">The value.</param>
+        /// <returns>System.String.</returns>
+        /// <exception cref="System.ArgumentNullException">value</exception>
+        public string DecryptString(string value)
+        {
+            if (value == null) throw new ArgumentNullException("value");
+
+            return DecryptStringUniversal(value);
+        }
+
+        private string EncryptStringUniversal(string value)
+        {
+            // Yes, this isn't good, but ProtectedData in mono is throwing exceptions, so use this for now
+
+            var bytes = Encoding.UTF8.GetBytes(value);
+            return Convert.ToBase64String(bytes);
+        }
+
+        private string DecryptStringUniversal(string value)
+        {
+            // Yes, this isn't good, but ProtectedData in mono is throwing exceptions, so use this for now
+
+            var bytes = Convert.FromBase64String(value);
+            return Encoding.UTF8.GetString(bytes, 0, bytes.Length);
+        }
+    }
+}

Emby.Server.Implementations/Udp/UdpServer.cs

@@ -0,0 +1,247 @@
+using MediaBrowser.Controller;
+using MediaBrowser.Model.ApiClient;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Serialization;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Events;
+using MediaBrowser.Model.Net;
+
+namespace Emby.Server.Implementations.Udp
+{
+    /// <summary>
+    /// Provides a Udp Server
+    /// </summary>
+    public class UdpServer : IDisposable
+    {
+        /// <summary>
+        /// The _logger
+        /// </summary>
+        private readonly ILogger _logger;
+
+        private bool _isDisposed;
+
+        private readonly List<Tuple<string, bool, Func<string, IpEndPointInfo, Encoding, Task>>> _responders = new List<Tuple<string, bool, Func<string, IpEndPointInfo, Encoding, Task>>>();
+
+        private readonly IServerApplicationHost _appHost;
+        private readonly IJsonSerializer _json;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="UdpServer" /> class.
+        /// </summary>
+        public UdpServer(ILogger logger, IServerApplicationHost appHost, IJsonSerializer json, ISocketFactory socketFactory)
+        {
+            _logger = logger;
+            _appHost = appHost;
+            _json = json;
+            _socketFactory = socketFactory;
+
+            AddMessageResponder("who is EmbyServer?", true, RespondToV2Message);
+            AddMessageResponder("who is MediaBrowserServer_v2?", false, RespondToV2Message);
+        }
+
+        private void AddMessageResponder(string message, bool isSubstring, Func<string, IpEndPointInfo, Encoding, Task> responder)
+        {
+            _responders.Add(new Tuple<string, bool, Func<string, IpEndPointInfo, Encoding, Task>>(message, isSubstring, responder));
+        }
+
+        /// <summary>
+        /// Raises the <see cref="E:MessageReceived" /> event.
+        /// </summary>
+        private async void OnMessageReceived(GenericEventArgs<SocketReceiveResult> e)
+        {
+            var message = e.Argument;
+
+            var encoding = Encoding.UTF8;
+            var responder = GetResponder(message.Buffer, message.ReceivedBytes, encoding);
+
+            if (responder == null)
+            {
+                encoding = Encoding.Unicode;
+                responder = GetResponder(message.Buffer, message.ReceivedBytes, encoding);
+            }
+
+            if (responder != null)
+            {
+                try
+                {
+                    await responder.Item2.Item3(responder.Item1, message.RemoteEndPoint, encoding).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error in OnMessageReceived", ex);
+                }
+            }
+        }
+
+        private Tuple<string, Tuple<string, bool, Func<string, IpEndPointInfo, Encoding, Task>>> GetResponder(byte[] buffer, int bytesReceived, Encoding encoding)
+        {
+            var text = encoding.GetString(buffer, 0, bytesReceived);
+            var responder = _responders.FirstOrDefault(i =>
+            {
+                if (i.Item2)
+                {
+                    return text.IndexOf(i.Item1, StringComparison.OrdinalIgnoreCase) != -1;
+                }
+                return string.Equals(i.Item1, text, StringComparison.OrdinalIgnoreCase);
+            });
+
+            if (responder == null)
+            {
+                return null;
+            }
+            return new Tuple<string, Tuple<string, bool, Func<string, IpEndPointInfo, Encoding, Task>>>(text, responder);
+        }
+
+        private async Task RespondToV2Message(string messageText, IpEndPointInfo endpoint, Encoding encoding)
+        {
+            var parts = messageText.Split('|');
+
+            var localUrl = await _appHost.GetLocalApiUrl().ConfigureAwait(false);
+
+            if (!string.IsNullOrEmpty(localUrl))
+            {
+                var response = new ServerDiscoveryInfo
+                {
+                    Address = localUrl,
+                    Id = _appHost.SystemId,
+                    Name = _appHost.FriendlyName
+                };
+
+                await SendAsync(encoding.GetBytes(_json.SerializeToString(response)), endpoint).ConfigureAwait(false);
+
+                if (parts.Length > 1)
+                {
+                    _appHost.EnableLoopback(parts[1]);
+                }
+            }
+            else
+            {
+                _logger.Warn("Unable to respond to udp request because the local ip address could not be determined.");
+            }
+        }
+
+        /// <summary>
+        /// The _udp client
+        /// </summary>
+        private IUdpSocket _udpClient;
+        private readonly ISocketFactory _socketFactory;
+
+        /// <summary>
+        /// Starts the specified port.
+        /// </summary>
+        /// <param name="port">The port.</param>
+        public void Start(int port)
+        {
+            _udpClient = _socketFactory.CreateUdpSocket(port);
+
+            Task.Run(() => StartListening());
+        }
+
+        private async void StartListening()
+        {
+            while (!_isDisposed)
+            {
+                try
+                {
+                    var result = await _udpClient.ReceiveAsync().ConfigureAwait(false);
+
+                    OnMessageReceived(result);
+                }
+                catch (ObjectDisposedException)
+                {
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error receiving udp message", ex);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Called when [message received].
+        /// </summary>
+        /// <param name="message">The message.</param>
+        private void OnMessageReceived(SocketReceiveResult message)
+        {
+            if (message.RemoteEndPoint.Port == 0)
+            {
+                return;
+            }
+
+            try
+            {
+                OnMessageReceived(new GenericEventArgs<SocketReceiveResult>
+                {
+                    Argument = message
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error handling UDP message", ex);
+            }
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Stops this instance.
+        /// </summary>
+        public void Stop()
+        {
+            _isDisposed = true;
+
+            if (_udpClient != null)
+            {
+                _udpClient.Dispose();
+            }
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool dispose)
+        {
+            if (dispose)
+            {
+                Stop();
+            }
+        }
+
+        public async Task SendAsync(byte[] bytes, IpEndPointInfo remoteEndPoint)
+        {
+            if (bytes == null)
+            {
+                throw new ArgumentNullException("bytes");
+            }
+
+            if (remoteEndPoint == null)
+            {
+                throw new ArgumentNullException("remoteEndPoint");
+            }
+
+            try
+            {
+                await _udpClient.SendAsync(bytes, bytes.Length, remoteEndPoint).ConfigureAwait(false);
+
+                _logger.Info("Udp message sent to {0}", remoteEndPoint);
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error sending message to {0}", ex, remoteEndPoint);
+            }
+        }
+    }
+
+}