Shadowghost
2 years ago
parent
3a91c37283
commit
42498194d9
@ -1,267 +0,0 @@
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#nullable disable
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#pragma warning disable CS1591
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using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Model.Net;
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namespace Emby.Server.Implementations.Net
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{
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// THIS IS A LINKED FILE - SHARED AMONGST MULTIPLE PLATFORMS
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// Be careful to check any changes compile and work for all platform projects it is shared in.
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public sealed class UdpSocket : ISocket, IDisposable
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{
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private readonly int _localPort;
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private readonly SocketAsyncEventArgs _receiveSocketAsyncEventArgs = new SocketAsyncEventArgs()
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{
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SocketFlags = SocketFlags.None
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};
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private readonly SocketAsyncEventArgs _sendSocketAsyncEventArgs = new SocketAsyncEventArgs()
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{
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SocketFlags = SocketFlags.None
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};
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private Socket _socket;
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private bool _disposed = false;
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private TaskCompletionSource<SocketReceiveResult> _currentReceiveTaskCompletionSource;
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private TaskCompletionSource<int> _currentSendTaskCompletionSource;
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public UdpSocket(Socket socket, int localPort, IPAddress ip)
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{
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ArgumentNullException.ThrowIfNull(socket);
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_socket = socket;
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_localPort = localPort;
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LocalIPAddress = ip;
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_socket.Bind(new IPEndPoint(ip, _localPort));
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InitReceiveSocketAsyncEventArgs();
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}
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public UdpSocket(Socket socket, IPEndPoint endPoint)
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{
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ArgumentNullException.ThrowIfNull(socket);
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_socket = socket;
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_socket.Connect(endPoint);
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InitReceiveSocketAsyncEventArgs();
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}
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public Socket Socket => _socket;
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public IPAddress LocalIPAddress { get; }
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private void InitReceiveSocketAsyncEventArgs()
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{
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var receiveBuffer = new byte[8192];
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_receiveSocketAsyncEventArgs.SetBuffer(receiveBuffer, 0, receiveBuffer.Length);
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_receiveSocketAsyncEventArgs.Completed += OnReceiveSocketAsyncEventArgsCompleted;
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var sendBuffer = new byte[8192];
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_sendSocketAsyncEventArgs.SetBuffer(sendBuffer, 0, sendBuffer.Length);
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_sendSocketAsyncEventArgs.Completed += OnSendSocketAsyncEventArgsCompleted;
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}
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private void OnReceiveSocketAsyncEventArgsCompleted(object sender, SocketAsyncEventArgs e)
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{
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var tcs = _currentReceiveTaskCompletionSource;
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if (tcs is not null)
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{
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_currentReceiveTaskCompletionSource = null;
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if (e.SocketError == SocketError.Success)
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{
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tcs.TrySetResult(new SocketReceiveResult
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{
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Buffer = e.Buffer,
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ReceivedBytes = e.BytesTransferred,
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RemoteEndPoint = e.RemoteEndPoint as IPEndPoint,
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LocalIPAddress = LocalIPAddress
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});
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}
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else
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{
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tcs.TrySetException(new SocketException((int)e.SocketError));
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}
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}
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}
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private void OnSendSocketAsyncEventArgsCompleted(object sender, SocketAsyncEventArgs e)
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{
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var tcs = _currentSendTaskCompletionSource;
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if (tcs is not null)
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{
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_currentSendTaskCompletionSource = null;
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if (e.SocketError == SocketError.Success)
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{
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tcs.TrySetResult(e.BytesTransferred);
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}
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else
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{
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tcs.TrySetException(new SocketException((int)e.SocketError));
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}
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}
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}
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public IAsyncResult BeginReceive(byte[] buffer, int offset, int count, AsyncCallback callback)
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{
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ThrowIfDisposed();
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EndPoint receivedFromEndPoint = new IPEndPoint(IPAddress.Any, 0);
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return _socket.BeginReceiveFrom(buffer, offset, count, SocketFlags.None, ref receivedFromEndPoint, callback, buffer);
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}
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public int Receive(byte[] buffer, int offset, int count)
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{
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ThrowIfDisposed();
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return _socket.Receive(buffer, 0, buffer.Length, SocketFlags.None);
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}
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public SocketReceiveResult EndReceive(IAsyncResult result)
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{
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ThrowIfDisposed();
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var sender = new IPEndPoint(IPAddress.Any, 0);
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var remoteEndPoint = (EndPoint)sender;
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var receivedBytes = _socket.EndReceiveFrom(result, ref remoteEndPoint);
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var buffer = (byte[])result.AsyncState;
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return new SocketReceiveResult
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{
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ReceivedBytes = receivedBytes,
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RemoteEndPoint = (IPEndPoint)remoteEndPoint,
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Buffer = buffer,
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LocalIPAddress = LocalIPAddress
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};
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}
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public Task<SocketReceiveResult> ReceiveAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
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{
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ThrowIfDisposed();
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var taskCompletion = new TaskCompletionSource<SocketReceiveResult>(TaskCreationOptions.RunContinuationsAsynchronously);
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bool isResultSet = false;
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Action<IAsyncResult> callback = callbackResult =>
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{
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try
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{
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if (!isResultSet)
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{
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isResultSet = true;
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taskCompletion.TrySetResult(EndReceive(callbackResult));
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}
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}
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catch (Exception ex)
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{
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taskCompletion.TrySetException(ex);
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}
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};
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var result = BeginReceive(buffer, offset, count, new AsyncCallback(callback));
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if (result.CompletedSynchronously)
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{
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callback(result);
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return taskCompletion.Task;
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}
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cancellationToken.Register(() => taskCompletion.TrySetCanceled());
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return taskCompletion.Task;
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}
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public Task SendToAsync(byte[] buffer, int offset, int bytes, IPEndPoint endPoint, CancellationToken cancellationToken)
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{
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ThrowIfDisposed();
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var taskCompletion = new TaskCompletionSource<int>(TaskCreationOptions.RunContinuationsAsynchronously);
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bool isResultSet = false;
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Action<IAsyncResult> callback = callbackResult =>
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{
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try
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{
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if (!isResultSet)
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{
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isResultSet = true;
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taskCompletion.TrySetResult(EndSendTo(callbackResult));
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}
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}
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catch (Exception ex)
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{
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taskCompletion.TrySetException(ex);
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}
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};
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var result = BeginSendTo(buffer, offset, bytes, endPoint, new AsyncCallback(callback), null);
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if (result.CompletedSynchronously)
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{
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callback(result);
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return taskCompletion.Task;
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}
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cancellationToken.Register(() => taskCompletion.TrySetCanceled());
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return taskCompletion.Task;
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}
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public IAsyncResult BeginSendTo(byte[] buffer, int offset, int size, IPEndPoint endPoint, AsyncCallback callback, object state)
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{
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ThrowIfDisposed();
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return _socket.BeginSendTo(buffer, offset, size, SocketFlags.None, endPoint, callback, state);
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}
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public int EndSendTo(IAsyncResult result)
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{
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ThrowIfDisposed();
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return _socket.EndSendTo(result);
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}
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private void ThrowIfDisposed()
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{
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if (_disposed)
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{
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throw new ObjectDisposedException(nameof(UdpSocket));
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}
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}
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/// <inheritdoc />
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public void Dispose()
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{
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if (_disposed)
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{
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return;
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}
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_socket?.Dispose();
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_receiveSocketAsyncEventArgs.Dispose();
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_sendSocketAsyncEventArgs.Dispose();
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_currentReceiveTaskCompletionSource?.TrySetCanceled();
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_currentSendTaskCompletionSource?.TrySetCanceled();
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_socket = null;
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_currentReceiveTaskCompletionSource = null;
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_currentSendTaskCompletionSource = null;
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_disposed = true;
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}
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}
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}
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@ -1,34 +0,0 @@
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#pragma warning disable CS1591
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using System;
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using System.Net;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Model.Net
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{
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/// <summary>
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/// Provides a common interface across platforms for UDP sockets used by this SSDP implementation.
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/// </summary>
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public interface ISocket : IDisposable
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{
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IPAddress LocalIPAddress { get; }
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Task<SocketReceiveResult> ReceiveAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken);
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IAsyncResult BeginReceive(byte[] buffer, int offset, int count, AsyncCallback callback);
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SocketReceiveResult EndReceive(IAsyncResult result);
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/// <summary>
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/// Sends a UDP message to a particular end point (uni or multicast).
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/// </summary>
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/// <param name="buffer">An array of type <see cref="byte" /> that contains the data to send.</param>
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/// <param name="offset">The zero-based position in buffer at which to begin sending data.</param>
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/// <param name="bytes">The number of bytes to send.</param>
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/// <param name="endPoint">An <see cref="IPEndPoint" /> that represents the remote device.</param>
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/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
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/// <returns>The task object representing the asynchronous operation.</returns>
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Task SendToAsync(byte[] buffer, int offset, int bytes, IPEndPoint endPoint, CancellationToken cancellationToken);
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}
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}
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@ -1,32 +1,36 @@
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#pragma warning disable CS1591
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using System.Net;
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using System.Net.Sockets;
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namespace MediaBrowser.Model.Net
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{
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/// <summary>
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/// Implemented by components that can create a platform specific UDP socket implementation, and wrap it in the cross platform <see cref="ISocket"/> interface.
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/// Implemented by components that can create specific socket configurations.
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/// </summary>
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public interface ISocketFactory
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{
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ISocket CreateUdpBroadcastSocket(int localPort);
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/// <summary>
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/// Creates a new unicast socket using the specified local port number.
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/// </summary>
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/// <param name="localPort">The local port to bind to.</param>
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/// <returns>A new unicast socket using the specified local port number.</returns>
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Socket CreateUdpBroadcastSocket(int localPort);
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/// <summary>
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/// Creates a new unicast socket using the specified local port number.
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/// </summary>
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/// <param name="localIp">The local IP address to bind to.</param>
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/// <param name="bindInterface">The bind interface.</param>
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/// <param name="localPort">The local port to bind to.</param>
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/// <returns>A new unicast socket using the specified local port number.</returns>
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ISocket CreateSsdpUdpSocket(IPAddress localIp, int localPort);
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Socket CreateSsdpUdpSocket(IPData bindInterface, int localPort);
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/// <summary>
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/// Creates a new multicast socket using the specified multicast IP address, multicast time to live and local port.
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/// </summary>
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/// <param name="ipAddress">The multicast IP address to bind to.</param>
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/// <param name="bindIpAddress">The bind IP address.</param>
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/// <param name="multicastAddress">The multicast IP address to bind to.</param>
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/// <param name="bindInterface">The bind interface.</param>
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/// <param name="multicastTimeToLive">The multicast time to live value. Actually a maximum number of network hops for UDP packets.</param>
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/// <param name="localPort">The local port to bind to.</param>
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/// <returns>A <see cref="ISocket"/> implementation.</returns>
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ISocket CreateUdpMulticastSocket(IPAddress ipAddress, IPAddress bindIpAddress, int multicastTimeToLive, int localPort);
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/// <returns>A new multicast socket using the specfied bind interface, multicast address, multicast time to live and port.</returns>
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Socket CreateUdpMulticastSocket(IPAddress multicastAddress, IPData bindInterface, int multicastTimeToLive, int localPort);
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}
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}
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