make dlna project portable

Emby.Common.Implementations/Net/DisposableManagedObjectBase.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Emby.Common.Implementations.Net
+{
+    /// <summary>
+    /// Correclty implements the <see cref="IDisposable"/> interface and pattern for an object containing only managed resources, and adds a few common niceities not on the interface such as an <see cref="IsDisposed"/> property.
+    /// </summary>
+    public abstract class DisposableManagedObjectBase : IDisposable
+    {
+
+        #region Public Methods
+
+        /// <summary>
+        /// Override this method and dispose any objects you own the lifetime of if disposing is true;
+        /// </summary>
+        /// <param name="disposing">True if managed objects should be disposed, if false, only unmanaged resources should be released.</param>
+        protected abstract void Dispose(bool disposing);
+
+        /// <summary>
+        /// Throws and <see cref="System.ObjectDisposedException"/> if the <see cref="IsDisposed"/> property is true.
+        /// </summary>
+        /// <seealso cref="IsDisposed"/>
+        /// <exception cref="System.ObjectDisposedException">Thrown if the <see cref="IsDisposed"/> property is true.</exception>
+        /// <seealso cref="Dispose()"/>
+        protected virtual void ThrowIfDisposed()
+        {
+            if (this.IsDisposed) throw new ObjectDisposedException(this.GetType().FullName);
+        }
+
+        #endregion
+
+        #region Public Properties
+
+        /// <summary>
+        /// Sets or returns a boolean indicating whether or not this instance has been disposed.
+        /// </summary>
+        /// <seealso cref="Dispose()"/>
+        public bool IsDisposed
+        {
+            get;
+            private set;
+        }
+
+        #endregion
+
+        #region IDisposable Members
+
+        /// <summary>
+        /// Disposes this object instance and all internally managed resources.
+        /// </summary>
+        /// <remarks>
+        /// <para>Sets the <see cref="IsDisposed"/> property to true. Does not explicitly throw an exception if called multiple times, but makes no promises about behaviour of derived classes.</para>
+        /// </remarks>
+        /// <seealso cref="IsDisposed"/>
+        public void Dispose()
+        {
+            try
+            {
+                IsDisposed = true;
+
+                Dispose(true);
+            }
+            finally
+            {
+                GC.SuppressFinalize(this);
+            }
+        }
+
+        #endregion
+    }
+}

Emby.Common.Implementations/Net/SocketFactory.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Net;
+
+namespace Emby.Common.Implementations.Net
+{
+    public class SocketFactory : ISocketFactory
+    {
+        // THIS IS A LINKED FILE - SHARED AMONGST MULTIPLE PLATFORMS	
+        // Be careful to check any changes compile and work for all platform projects it is shared in.
+
+        // Not entirely happy with this. Would have liked to have done something more generic/reusable,
+        // but that wasn't really the point so kept to YAGNI principal for now, even if the 
+        // interfaces are a bit ugly, specific and make assumptions.
+
+        /// <summary>
+        /// Used by RSSDP components to create implementations of the <see cref="IUdpSocket"/> interface, to perform platform agnostic socket communications.
+        /// </summary>
+        private IPAddress _LocalIP;
+
+        /// <summary>
+        /// Default constructor.
+        /// </summary>
+        /// <param name="localIP">A string containing the IP address of the local network adapter to bind sockets to. Null or empty string will use <see cref="IPAddress.Any"/>.</param>
+        public SocketFactory(string localIP)
+        {
+            if (String.IsNullOrEmpty(localIP))
+                _LocalIP = IPAddress.Any;
+            else
+                _LocalIP = IPAddress.Parse(localIP);
+        }
+
+        #region ISocketFactory Members
+
+        /// <summary>
+        /// Creates a new UDP socket that is a member of the SSDP multicast local admin group and binds it to the specified local port.
+        /// </summary>
+        /// <param name="localPort">An integer specifying the local port to bind the socket to.</param>
+        /// <returns>An implementation of the <see cref="IUdpSocket"/> interface used by RSSDP components to perform socket operations.</returns>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "The purpose of this method is to create and returns a disposable result, it is up to the caller to dispose it when they are done with it.")]
+        public IUdpSocket CreateUdpSocket(int localPort)
+        {
+            if (localPort < 0) throw new ArgumentException("localPort cannot be less than zero.", "localPort");
+
+            var retVal = new Socket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Dgram, System.Net.Sockets.ProtocolType.Udp);
+            try
+            {
+                retVal.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+                retVal.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 4);
+                retVal.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(IPAddress.Parse("239.255.255.250"), _LocalIP));
+                return new UdpSocket(retVal, localPort, _LocalIP.ToString());
+            }
+            catch
+            {
+                if (retVal != null)
+                    retVal.Dispose();
+
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Creates a new UDP socket that is a member of the specified multicast IP address, and binds it to the specified local port.
+        /// </summary>
+        /// <param name="ipAddress">The multicast IP address to make the socket a member of.</param>
+        /// <param name="multicastTimeToLive">The multicast time to live value for the socket.</param>
+        /// <param name="localPort">The number of the local port to bind to.</param>
+        /// <returns></returns>
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "ip"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "The purpose of this method is to create and returns a disposable result, it is up to the caller to dispose it when they are done with it.")]
+        public IUdpSocket CreateUdpMulticastSocket(string ipAddress, int multicastTimeToLive, int localPort)
+        {
+            if (ipAddress == null) throw new ArgumentNullException("ipAddress");
+            if (ipAddress.Length == 0) throw new ArgumentException("ipAddress cannot be an empty string.", "ipAddress");
+            if (multicastTimeToLive <= 0) throw new ArgumentException("multicastTimeToLive cannot be zero or less.", "multicastTimeToLive");
+            if (localPort < 0) throw new ArgumentException("localPort cannot be less than zero.", "localPort");
+
+            var retVal = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+
+            try
+            {
+#if NETSTANDARD1_3
+				// The ExclusiveAddressUse socket option is a Windows-specific option that, when set to "true," tells Windows not to allow another socket to use the same local address as this socket
+				// See https://github.com/dotnet/corefx/pull/11509 for more details
+				if (System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Windows))
+				{
+					retVal.ExclusiveAddressUse = false;
+				}
+#else
+                retVal.ExclusiveAddressUse = false;
+#endif
+                retVal.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+                retVal.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, multicastTimeToLive);
+                retVal.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(IPAddress.Parse(ipAddress), _LocalIP));
+                retVal.MulticastLoopback = true;
+
+                return new UdpSocket(retVal, localPort, _LocalIP.ToString());
+            }
+            catch
+            {
+                if (retVal != null)
+                    retVal.Dispose();
+
+                throw;
+            }
+        }
+
+        #endregion
+    }
+}

Emby.Common.Implementations/Net/UdpSocket.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Security;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Net;
+
+namespace Emby.Common.Implementations.Net
+{
+    // THIS IS A LINKED FILE - SHARED AMONGST MULTIPLE PLATFORMS	
+    // Be careful to check any changes compile and work for all platform projects it is shared in.
+
+    internal sealed class UdpSocket : DisposableManagedObjectBase, IUdpSocket
+    {
+
+        #region Fields
+
+        private System.Net.Sockets.Socket _Socket;
+        private int _LocalPort;
+
+        #endregion
+
+        #region Constructors
+
+        public UdpSocket(System.Net.Sockets.Socket socket, int localPort, string ipAddress)
+        {
+            if (socket == null) throw new ArgumentNullException("socket");
+
+            _Socket = socket;
+            _LocalPort = localPort;
+
+            IPAddress ip = null;
+            if (String.IsNullOrEmpty(ipAddress))
+                ip = IPAddress.Any;
+            else
+                ip = IPAddress.Parse(ipAddress);
+
+            _Socket.Bind(new IPEndPoint(ip, _LocalPort));
+            if (_LocalPort == 0)
+                _LocalPort = (_Socket.LocalEndPoint as IPEndPoint).Port;
+        }
+
+        #endregion
+
+        #region IUdpSocket Members
+
+        public Task<ReceivedUdpData> ReceiveAsync()
+        {
+            ThrowIfDisposed();
+
+            var tcs = new TaskCompletionSource<ReceivedUdpData>();
+
+            System.Net.EndPoint receivedFromEndPoint = new IPEndPoint(IPAddress.Any, 0);
+            var state = new AsyncReceiveState(_Socket, receivedFromEndPoint);
+            state.TaskCompletionSource = tcs;
+
+#if NETSTANDARD1_6
+            _Socket.ReceiveFromAsync(new System.ArraySegment<Byte>(state.Buffer), System.Net.Sockets.SocketFlags.None, state.EndPoint)
+                .ContinueWith((task, asyncState) =>
+                {
+                    if (task.Status != TaskStatus.Faulted)
+                    {
+                        var receiveState = asyncState as AsyncReceiveState;
+                        receiveState.EndPoint = task.Result.RemoteEndPoint;
+                        ProcessResponse(receiveState, () => task.Result.ReceivedBytes);
+                    }
+                }, state);
+#else
+            _Socket.BeginReceiveFrom(state.Buffer, 0, state.Buffer.Length, System.Net.Sockets.SocketFlags.None, ref state.EndPoint, new AsyncCallback(this.ProcessResponse), state);
+#endif
+
+            return tcs.Task;
+        }
+
+        public Task SendTo(byte[] messageData, IpEndPointInfo endPoint)
+        {
+            ThrowIfDisposed();
+
+            if (messageData == null) throw new ArgumentNullException("messageData");
+            if (endPoint == null) throw new ArgumentNullException("endPoint");
+
+#if NETSTANDARD1_6
+            _Socket.SendTo(messageData, new System.Net.IPEndPoint(IPAddress.Parse(endPoint.IpAddress.ToString()), endPoint.Port));
+            return Task.FromResult(true);
+#else
+            var taskSource = new TaskCompletionSource<bool>();
+
+            try
+            {
+                _Socket.BeginSendTo(messageData, 0, messageData.Length, SocketFlags.None, new System.Net.IPEndPoint(IPAddress.Parse(endPoint.IpAddress.ToString()), endPoint.Port), result =>
+                {
+                    try
+                    {
+                        _Socket.EndSend(result);
+                        taskSource.TrySetResult(true);
+                    }
+                    catch (SocketException ex)
+                    {
+                        taskSource.TrySetException(ex);
+                    }
+                    catch (ObjectDisposedException ex)
+                    {
+                        taskSource.TrySetException(ex);
+                    }
+                    catch (InvalidOperationException ex)
+                    {
+                        taskSource.TrySetException(ex);
+                    }
+                    catch (SecurityException ex)
+                    {
+                        taskSource.TrySetException(ex);
+                    }
+                }, null);
+            }
+            catch (SocketException ex)
+            {
+                taskSource.TrySetException(ex);
+            }
+            catch (ObjectDisposedException ex)
+            {
+                taskSource.TrySetException(ex);
+            }
+            catch (SecurityException ex)
+            {
+                taskSource.TrySetException(ex);
+            }
+
+            //_Socket.SendTo(messageData, new System.Net.IPEndPoint(IPAddress.Parse(endPoint.IPAddress), endPoint.Port));
+
+            return taskSource.Task;
+#endif
+        }
+
+        #endregion
+
+        #region Overrides
+
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                var socket = _Socket;
+                if (socket != null)
+                    socket.Dispose();
+            }
+        }
+
+        #endregion
+
+        #region Private Methods
+
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Exceptions via task methods should be reported by task completion source, so this should be ok.")]
+        private static void ProcessResponse(AsyncReceiveState state, Func<int> receiveData)
+        {
+            try
+            {
+                var bytesRead = receiveData();
+
+                var ipEndPoint = state.EndPoint as IPEndPoint;
+                state.TaskCompletionSource.SetResult(
+                    new ReceivedUdpData()
+                    {
+                        Buffer = state.Buffer,
+                        ReceivedBytes = bytesRead,
+                        ReceivedFrom = ToIpEndPointInfo(ipEndPoint)
+                    }
+                );
+            }
+            catch (ObjectDisposedException)
+            {
+                state.TaskCompletionSource.SetCanceled();
+            }
+            catch (SocketException se)
+            {
+                if (se.SocketErrorCode != SocketError.Interrupted && se.SocketErrorCode != SocketError.OperationAborted && se.SocketErrorCode != SocketError.Shutdown)
+                    state.TaskCompletionSource.SetException(se);
+                else
+                    state.TaskCompletionSource.SetCanceled();
+            }
+            catch (Exception ex)
+            {
+                state.TaskCompletionSource.SetException(ex);
+            }
+        }
+
+        private static IpEndPointInfo ToIpEndPointInfo(IPEndPoint endpoint)
+        {
+            if (endpoint == null)
+            {
+                return null;
+            }
+
+            return new IpEndPointInfo
+            {
+                IpAddress = new IpAddressInfo
+                {
+                    Address = endpoint.Address.ToString(),
+                    IsIpv6 = endpoint.AddressFamily == AddressFamily.InterNetworkV6
+                },
+
+                Port = endpoint.Port
+            };
+        }
+
+        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Exceptions via task methods should be reported by task completion source, so this should be ok.")]
+        private void ProcessResponse(IAsyncResult asyncResult)
+        {
+#if NET46
+            var state = asyncResult.AsyncState as AsyncReceiveState;
+            try
+            {
+                var bytesRead = state.Socket.EndReceiveFrom(asyncResult, ref state.EndPoint);
+
+                var ipEndPoint = state.EndPoint as IPEndPoint;
+                state.TaskCompletionSource.SetResult(
+                    new ReceivedUdpData()
+                    {
+                        Buffer = state.Buffer,
+                        ReceivedBytes = bytesRead,
+                        ReceivedFrom = ToIpEndPointInfo(ipEndPoint)
+                    }
+                );
+            }
+            catch (ObjectDisposedException)
+            {
+                state.TaskCompletionSource.SetCanceled();
+            }
+            catch (SocketException se)
+            {
+                if (se.SocketErrorCode != SocketError.Interrupted && se.SocketErrorCode != SocketError.OperationAborted && se.SocketErrorCode != SocketError.Shutdown)
+                    state.TaskCompletionSource.SetException(se);
+                else
+                    state.TaskCompletionSource.SetCanceled();
+            }
+            catch (Exception ex)
+            {
+                state.TaskCompletionSource.SetException(ex);
+            }
+#endif
+        }
+
+        #endregion
+
+        #region Private Classes
+
+        private class AsyncReceiveState
+        {
+            public AsyncReceiveState(System.Net.Sockets.Socket socket, EndPoint endPoint)
+            {
+                this.Socket = socket;
+                this.EndPoint = endPoint;
+            }
+
+            public EndPoint EndPoint;
+            public byte[] Buffer = new byte[8192];
+
+            public System.Net.Sockets.Socket Socket { get; private set; }
+
+            public TaskCompletionSource<ReceivedUdpData> TaskCompletionSource { get; set; }
+
+        }
+
+        #endregion
+
+    }
+}