jellyfin/Jellyfin.Server/Middleware/WebSocketHandlerMiddleware.cs

using System.Threading.Tasks;
using MediaBrowser.Controller.Net;
using Microsoft.AspNetCore.Http;

namespace Jellyfin.Server.Middleware
{
    /// <summary>
    /// Handles WebSocket requests.
    /// </summary>
    public class WebSocketHandlerMiddleware
    {
        private readonly RequestDelegate _next;

        /// <summary>
        /// Initializes a new instance of the <see cref="WebSocketHandlerMiddleware"/> class.
        /// </summary>
        /// <param name="next">The next delegate in the pipeline.</param>
        public WebSocketHandlerMiddleware(RequestDelegate next)
        {
            _next = next;
        }

        /// <summary>
        /// Executes the middleware action.
        /// </summary>
        /// <param name="httpContext">The current HTTP context.</param>
        /// <param name="webSocketManager">The WebSocket connection manager.</param>
        /// <returns>The async task.</returns>
        public async Task Invoke(HttpContext httpContext, IWebSocketManager webSocketManager)
        {
            if (!httpContext.WebSockets.IsWebSocketRequest)
            {
                await _next(httpContext).ConfigureAwait(false);
                return;
            }

            await webSocketManager.WebSocketRequestHandler(httpContext).ConfigureAwait(false);
        }
    }
}