mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-09-06 11:34:57 +02:00
284 lines
8.9 KiB
C#
284 lines
8.9 KiB
C#
using System;
|
|
using System.Net.WebSockets;
|
|
using System.Text;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using Emby.Server.Implementations.Net;
|
|
using MediaBrowser.Controller.Net;
|
|
using MediaBrowser.Model.Net;
|
|
using MediaBrowser.Model.Serialization;
|
|
using MediaBrowser.Model.Services;
|
|
using Microsoft.Extensions.Logging;
|
|
using UtfUnknown;
|
|
|
|
namespace Emby.Server.Implementations.HttpServer
|
|
{
|
|
/// <summary>
|
|
/// Class WebSocketConnection
|
|
/// </summary>
|
|
public class WebSocketConnection : IWebSocketConnection
|
|
{
|
|
public event EventHandler<EventArgs> Closed;
|
|
|
|
/// <summary>
|
|
/// The _socket
|
|
/// </summary>
|
|
private readonly IWebSocket _socket;
|
|
|
|
/// <summary>
|
|
/// The _remote end point
|
|
/// </summary>
|
|
public string RemoteEndPoint { get; private set; }
|
|
|
|
/// <summary>
|
|
/// The logger
|
|
/// </summary>
|
|
private readonly ILogger _logger;
|
|
|
|
/// <summary>
|
|
/// The _json serializer
|
|
/// </summary>
|
|
private readonly IJsonSerializer _jsonSerializer;
|
|
|
|
/// <summary>
|
|
/// Gets or sets the receive action.
|
|
/// </summary>
|
|
/// <value>The receive action.</value>
|
|
public Func<WebSocketMessageInfo, Task> OnReceive { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets the last activity date.
|
|
/// </summary>
|
|
/// <value>The last activity date.</value>
|
|
public DateTime LastActivityDate { get; private set; }
|
|
|
|
/// <summary>
|
|
/// Gets the id.
|
|
/// </summary>
|
|
/// <value>The id.</value>
|
|
public Guid Id { get; private set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the URL.
|
|
/// </summary>
|
|
/// <value>The URL.</value>
|
|
public string Url { get; set; }
|
|
/// <summary>
|
|
/// Gets or sets the query string.
|
|
/// </summary>
|
|
/// <value>The query string.</value>
|
|
public QueryParamCollection QueryString { get; set; }
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="WebSocketConnection" /> class.
|
|
/// </summary>
|
|
/// <param name="socket">The socket.</param>
|
|
/// <param name="remoteEndPoint">The remote end point.</param>
|
|
/// <param name="jsonSerializer">The json serializer.</param>
|
|
/// <param name="logger">The logger.</param>
|
|
/// <exception cref="ArgumentNullException">socket</exception>
|
|
public WebSocketConnection(IWebSocket socket, string remoteEndPoint, IJsonSerializer jsonSerializer, ILogger logger)
|
|
{
|
|
if (socket == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(socket));
|
|
}
|
|
if (string.IsNullOrEmpty(remoteEndPoint))
|
|
{
|
|
throw new ArgumentNullException(nameof(remoteEndPoint));
|
|
}
|
|
if (jsonSerializer == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(jsonSerializer));
|
|
}
|
|
if (logger == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(logger));
|
|
}
|
|
|
|
Id = Guid.NewGuid();
|
|
_jsonSerializer = jsonSerializer;
|
|
_socket = socket;
|
|
_socket.OnReceiveBytes = OnReceiveInternal;
|
|
|
|
var memorySocket = socket as IMemoryWebSocket;
|
|
if (memorySocket != null)
|
|
{
|
|
memorySocket.OnReceiveMemoryBytes = OnReceiveInternal;
|
|
}
|
|
|
|
RemoteEndPoint = remoteEndPoint;
|
|
_logger = logger;
|
|
|
|
socket.Closed += socket_Closed;
|
|
}
|
|
|
|
void socket_Closed(object sender, EventArgs e)
|
|
{
|
|
Closed?.Invoke(this, EventArgs.Empty);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when [receive].
|
|
/// </summary>
|
|
/// <param name="bytes">The bytes.</param>
|
|
private void OnReceiveInternal(byte[] bytes)
|
|
{
|
|
LastActivityDate = DateTime.UtcNow;
|
|
|
|
if (OnReceive == null)
|
|
{
|
|
return;
|
|
}
|
|
var charset = CharsetDetector.DetectFromBytes(bytes).Detected?.EncodingName;
|
|
|
|
if (string.Equals(charset, "utf-8", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
OnReceiveInternal(Encoding.UTF8.GetString(bytes, 0, bytes.Length));
|
|
}
|
|
else
|
|
{
|
|
OnReceiveInternal(Encoding.ASCII.GetString(bytes, 0, bytes.Length));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Called when [receive].
|
|
/// </summary>
|
|
/// <param name="memory">The memory block.</param>
|
|
/// <param name="length">The length of the memory block.</param>
|
|
private void OnReceiveInternal(Memory<byte> memory, int length)
|
|
{
|
|
LastActivityDate = DateTime.UtcNow;
|
|
|
|
if (OnReceive == null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var bytes = memory.Slice(0, length).ToArray();
|
|
|
|
var charset = CharsetDetector.DetectFromBytes(bytes).Detected?.EncodingName;
|
|
|
|
if (string.Equals(charset, "utf-8", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
OnReceiveInternal(Encoding.UTF8.GetString(bytes, 0, bytes.Length));
|
|
}
|
|
else
|
|
{
|
|
OnReceiveInternal(Encoding.ASCII.GetString(bytes, 0, bytes.Length));
|
|
}
|
|
}
|
|
|
|
private void OnReceiveInternal(string message)
|
|
{
|
|
LastActivityDate = DateTime.UtcNow;
|
|
|
|
if (!message.StartsWith("{", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
// This info is useful sometimes but also clogs up the log
|
|
_logger.LogDebug("Received web socket message that is not a json structure: {message}", message);
|
|
return;
|
|
}
|
|
|
|
if (OnReceive == null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
try
|
|
{
|
|
var stub = (WebSocketMessage<object>)_jsonSerializer.DeserializeFromString(message, typeof(WebSocketMessage<object>));
|
|
|
|
var info = new WebSocketMessageInfo
|
|
{
|
|
MessageType = stub.MessageType,
|
|
Data = stub.Data == null ? null : stub.Data.ToString(),
|
|
Connection = this
|
|
};
|
|
|
|
OnReceive(info);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Error processing web socket message");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a message asynchronously.
|
|
/// </summary>
|
|
/// <typeparam name="T"></typeparam>
|
|
/// <param name="message">The message.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
/// <exception cref="ArgumentNullException">message</exception>
|
|
public Task SendAsync<T>(WebSocketMessage<T> message, CancellationToken cancellationToken)
|
|
{
|
|
if (message == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(message));
|
|
}
|
|
|
|
var json = _jsonSerializer.SerializeToString(message);
|
|
|
|
return SendAsync(json, cancellationToken);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a message asynchronously.
|
|
/// </summary>
|
|
/// <param name="buffer">The buffer.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
public Task SendAsync(byte[] buffer, CancellationToken cancellationToken)
|
|
{
|
|
if (buffer == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(buffer));
|
|
}
|
|
|
|
cancellationToken.ThrowIfCancellationRequested();
|
|
|
|
return _socket.SendAsync(buffer, true, cancellationToken);
|
|
}
|
|
|
|
public Task SendAsync(string text, CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(text))
|
|
{
|
|
throw new ArgumentNullException(nameof(text));
|
|
}
|
|
|
|
cancellationToken.ThrowIfCancellationRequested();
|
|
|
|
return _socket.SendAsync(text, true, cancellationToken);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the state.
|
|
/// </summary>
|
|
/// <value>The state.</value>
|
|
public WebSocketState State => _socket.State;
|
|
|
|
/// <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)
|
|
{
|
|
_socket.Dispose();
|
|
}
|
|
}
|
|
}
|
|
}
|