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#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.WebSockets;
using System.Threading.Tasks;
using Jellyfin.Data.Events;
using MediaBrowser.Controller.Net;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.HttpServer
{
public class WebSocketManager : IWebSocketManager
{
private readonly ILogger<WebSocketManager> _logger;
private readonly ILoggerFactory _loggerFactory;
private IWebSocketListener[] _webSocketListeners = Array.Empty<IWebSocketListener>();
private bool _disposed = false;
public WebSocketManager(
ILogger<WebSocketManager> logger,
ILoggerFactory loggerFactory)
{
_logger = logger;
_loggerFactory = loggerFactory;
}
public event EventHandler<GenericEventArgs<IWebSocketConnection>> WebSocketConnected;
/// <inheritdoc />
public async Task WebSocketRequestHandler(HttpContext context)
{
if (_disposed)
{
return;
}
try
{
_logger.LogInformation("WS {IP} request", context.Connection.RemoteIpAddress);
WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync().ConfigureAwait(false);
using var connection = new WebSocketConnection(
_loggerFactory.CreateLogger<WebSocketConnection>(),
webSocket,
context.Connection.RemoteIpAddress,
context.Request.Query)
{
OnReceive = ProcessWebSocketMessageReceived
};
WebSocketConnected?.Invoke(this, new GenericEventArgs<IWebSocketConnection>(connection));
await connection.ProcessAsync().ConfigureAwait(false);
_logger.LogInformation("WS {IP} closed", context.Connection.RemoteIpAddress);
}
catch (Exception ex) // Otherwise ASP.Net will ignore the exception
{
_logger.LogError(ex, "WS {IP} WebSocketRequestHandler error", context.Connection.RemoteIpAddress);
if (!context.Response.HasStarted)
{
context.Response.StatusCode = 500;
}
}
}
/// <summary>
/// Adds the rest handlers.
/// </summary>
/// <param name="listeners">The web socket listeners.</param>
public void Init(IEnumerable<IWebSocketListener> listeners)
{
_webSocketListeners = listeners.ToArray();
}
/// <summary>
/// Processes the web socket message received.
/// </summary>
/// <param name="result">The result.</param>
private Task ProcessWebSocketMessageReceived(WebSocketMessageInfo result)
{
if (_disposed)
{
return Task.CompletedTask;
}
IEnumerable<Task> GetTasks()
{
foreach (var x in _webSocketListeners)
{
yield return x.ProcessMessageAsync(result);
}
}
return Task.WhenAll(GetTasks());
}
}
}
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