Remove no longer relevant changes

osu.Game/Online/DevelopmentEndpointConfiguration.cs

@@ -13,7 +13,6 @@ namespace osu.Game.Online
             SpectatorEndpointUrl = $@"{APIEndpointUrl}/signalr/spectator";
             MultiplayerEndpointUrl = $@"{APIEndpointUrl}/signalr/multiplayer";
             MetadataEndpointUrl = $@"{APIEndpointUrl}/signalr/metadata";
-            NotificationsWebSocketEndpointUrl = "wss://dev.ppy.sh/home/notifications/feed";
         }
     }
 }

osu.Game/Online/EndpointConfiguration.cs

@@ -44,10 +44,5 @@ namespace osu.Game.Online
         /// The endpoint for the SignalR metadata server.
         /// </summary>
         public string MetadataEndpointUrl { get; set; }
-
-        /// <summary>
-        /// The endpoint for the notifications websocket.
-        /// </summary>
-        public string NotificationsWebSocketEndpointUrl { get; set; }
     }
 }

osu.Game/Online/ExperimentalEndpointConfiguration.cs

@@ -14,7 +14,6 @@ namespace osu.Game.Online
             SpectatorEndpointUrl = "https://spectator.ppy.sh/spectator";
             MultiplayerEndpointUrl = "https://spectator.ppy.sh/multiplayer";
             MetadataEndpointUrl = "https://spectator.ppy.sh/metadata";
-            NotificationsWebSocketEndpointUrl = "wss://notify.ppy.sh";
         }
     }
 }

osu.Game/Online/Notifications/WebSocket/OsuClientWebSocket.cs

@@ -1,154 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using System;
-using System.Diagnostics;
-using System.Net;
-using System.Net.WebSockets;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
-using Newtonsoft.Json;
-using osu.Framework.Extensions.TypeExtensions;
-using osu.Framework.Logging;
-using osu.Game.Online.API;
-
-namespace osu.Game.Online.Notifications.WebSocket
-{
-    public class OsuClientWebSocket : IAsyncDisposable
-    {
-        public event Func<SocketMessage, Task>? MessageReceived;
-        public event Func<Exception, Task>? Closed;
-
-        private readonly string endpoint;
-        private readonly ClientWebSocket socket;
-
-        private CancellationTokenSource? linkedTokenSource = null;
-
-        public OsuClientWebSocket(IAPIProvider api, string endpoint)
-        {
-            socket = new ClientWebSocket();
-            socket.Options.SetRequestHeader(@"Authorization", @$"Bearer {api.AccessToken}");
-            socket.Options.Proxy = WebRequest.DefaultWebProxy;
-            if (socket.Options.Proxy != null)
-                socket.Options.Proxy.Credentials = CredentialCache.DefaultCredentials;
-
-            this.endpoint = endpoint;
-        }
-
-        public async Task ConnectAsync(CancellationToken cancellationToken)
-        {
-            if (socket.State == WebSocketState.Connecting || socket.State == WebSocketState.Open)
-                throw new InvalidOperationException("Connection is already opened");
-
-            Debug.Assert(linkedTokenSource == null);
-            linkedTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
-
-            await socket.ConnectAsync(new Uri(endpoint), linkedTokenSource.Token).ConfigureAwait(false);
-            runReadLoop(linkedTokenSource.Token);
-        }
-
-        private void runReadLoop(CancellationToken cancellationToken) => Task.Factory.StartNew(async () =>
-        {
-            byte[] buffer = new byte[1024];
-            StringBuilder messageResult = new StringBuilder();
-
-            while (!cancellationToken.IsCancellationRequested)
-            {
-                try
-                {
-                    WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, cancellationToken).ConfigureAwait(false);
-
-                    switch (result.MessageType)
-                    {
-                        case WebSocketMessageType.Text:
-                            messageResult.Append(Encoding.UTF8.GetString(buffer[..result.Count]));
-
-                            if (result.EndOfMessage)
-                            {
-                                SocketMessage? message = JsonConvert.DeserializeObject<SocketMessage>(messageResult.ToString());
-                                messageResult.Clear();
-
-                                Debug.Assert(message != null);
-
-                                if (message.Error != null)
-                                {
-                                    Logger.Log($"{GetType().ReadableName()} error: {message.Error}", LoggingTarget.Network);
-                                    break;
-                                }
-
-                                await invokeMessageReceived(message).ConfigureAwait(false);
-                            }
-
-                            break;
-
-                        case WebSocketMessageType.Binary:
-                            throw new NotImplementedException("Binary message type not supported.");
-
-                        case WebSocketMessageType.Close:
-                            throw new WebException("Connection closed by remote host.");
-                    }
-                }
-                catch (Exception ex)
-                {
-                    await invokeClosed(ex).ConfigureAwait(false);
-                    return;
-                }
-            }
-        }, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Default);
-
-        private async Task invokeMessageReceived(SocketMessage message)
-        {
-            if (MessageReceived == null)
-                return;
-
-            var invocationList = MessageReceived.GetInvocationList();
-
-            // ReSharper disable once PossibleInvalidCastExceptionInForeachLoop
-            foreach (Func<SocketMessage, Task> handler in invocationList)
-                await handler.Invoke(message).ConfigureAwait(false);
-        }
-
-        private async Task invokeClosed(Exception ex)
-        {
-            if (Closed == null)
-                return;
-
-            var invocationList = Closed.GetInvocationList();
-
-            // ReSharper disable once PossibleInvalidCastExceptionInForeachLoop
-            foreach (Func<Exception, Task> handler in invocationList)
-                await handler.Invoke(ex).ConfigureAwait(false);
-        }
-
-        public Task SendMessage(SocketMessage message, CancellationToken cancellationToken)
-        {
-            if (socket.State != WebSocketState.Open)
-                return Task.CompletedTask;
-
-            return socket.SendAsync(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(message)), WebSocketMessageType.Text, true, cancellationToken);
-        }
-
-        public async Task DisconnectAsync()
-        {
-            linkedTokenSource?.Cancel();
-            await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, @"Disconnecting", CancellationToken.None).ConfigureAwait(false);
-            linkedTokenSource?.Dispose();
-            linkedTokenSource = null;
-        }
-
-        public async ValueTask DisposeAsync()
-        {
-            try
-            {
-                await DisconnectAsync().ConfigureAwait(false);
-            }
-            catch
-            {
-                // Closure can fail if the connection is aborted. Don't really care since it's disposed anyway.
-            }
-
-            socket.Dispose();
-        }
-    }
-}

osu.Game/Online/ProductionEndpointConfiguration.cs

@@ -13,7 +13,6 @@ namespace osu.Game.Online
             SpectatorEndpointUrl = "https://spectator.ppy.sh/spectator";
             MultiplayerEndpointUrl = "https://spectator.ppy.sh/multiplayer";
             MetadataEndpointUrl = "https://spectator.ppy.sh/metadata";
-            NotificationsWebSocketEndpointUrl = "wss://notify.ppy.sh";
         }
     }
 }