mirror of
https://github.com/ppy/osu.git
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172 lines
6.2 KiB
C#
172 lines
6.2 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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#nullable enable
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.SignalR.Client;
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using Microsoft.Extensions.DependencyInjection;
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using Newtonsoft.Json;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Logging;
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using osu.Game.Online.API;
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namespace osu.Game.Online.RealtimeMultiplayer
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{
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public class RealtimeMultiplayerClient : StatefulMultiplayerClient
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{
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private const string endpoint = "https://spectator.ppy.sh/multiplayer";
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public override IBindable<bool> IsConnected => isConnected;
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private readonly Bindable<bool> isConnected = new Bindable<bool>();
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private readonly IBindable<APIState> apiState = new Bindable<APIState>();
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[Resolved]
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private IAPIProvider api { get; set; } = null!;
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private HubConnection? connection;
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[BackgroundDependencyLoader]
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private void load()
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{
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apiState.BindTo(api.State);
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apiState.BindValueChanged(apiStateChanged, true);
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}
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private void apiStateChanged(ValueChangedEvent<APIState> state)
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{
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switch (state.NewValue)
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{
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case APIState.Failing:
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case APIState.Offline:
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connection?.StopAsync();
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connection = null;
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break;
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case APIState.Online:
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Task.Run(Connect);
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break;
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}
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}
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protected virtual async Task Connect()
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{
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if (connection != null)
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return;
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connection = new HubConnectionBuilder()
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.WithUrl(endpoint, options =>
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{
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options.Headers.Add("Authorization", $"Bearer {api.AccessToken}");
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})
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.AddNewtonsoftJsonProtocol(options => { options.PayloadSerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; })
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.Build();
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// this is kind of SILLY
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// https://github.com/dotnet/aspnetcore/issues/15198
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connection.On<MultiplayerRoomState>(nameof(IMultiplayerClient.RoomStateChanged), ((IMultiplayerClient)this).RoomStateChanged);
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connection.On<MultiplayerRoomUser>(nameof(IMultiplayerClient.UserJoined), ((IMultiplayerClient)this).UserJoined);
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connection.On<MultiplayerRoomUser>(nameof(IMultiplayerClient.UserLeft), ((IMultiplayerClient)this).UserLeft);
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connection.On<int>(nameof(IMultiplayerClient.HostChanged), ((IMultiplayerClient)this).HostChanged);
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connection.On<MultiplayerRoomSettings>(nameof(IMultiplayerClient.SettingsChanged), ((IMultiplayerClient)this).SettingsChanged);
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connection.On<int, MultiplayerUserState>(nameof(IMultiplayerClient.UserStateChanged), ((IMultiplayerClient)this).UserStateChanged);
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connection.On(nameof(IMultiplayerClient.LoadRequested), ((IMultiplayerClient)this).LoadRequested);
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connection.On(nameof(IMultiplayerClient.MatchStarted), ((IMultiplayerClient)this).MatchStarted);
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connection.On(nameof(IMultiplayerClient.ResultsReady), ((IMultiplayerClient)this).ResultsReady);
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connection.Closed += async ex =>
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{
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isConnected.Value = false;
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if (ex != null)
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{
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Logger.Log($"Multiplayer client lost connection: {ex}", LoggingTarget.Network);
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await tryUntilConnected();
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}
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};
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await tryUntilConnected();
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async Task tryUntilConnected()
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{
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Logger.Log("Multiplayer client connecting...", LoggingTarget.Network);
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while (api.State.Value == APIState.Online)
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{
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try
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{
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// reconnect on any failure
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await connection.StartAsync();
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Logger.Log("Multiplayer client connected!", LoggingTarget.Network);
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// Success.
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isConnected.Value = true;
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break;
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}
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catch (Exception e)
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{
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Logger.Log($"Multiplayer client connection error: {e}", LoggingTarget.Network);
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await Task.Delay(5000);
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}
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}
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}
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}
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protected override Task<MultiplayerRoom> JoinRoom(long roomId)
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{
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if (!isConnected.Value)
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return Task.FromCanceled<MultiplayerRoom>(CancellationToken.None);
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return connection.InvokeAsync<MultiplayerRoom>(nameof(IMultiplayerServer.JoinRoom), roomId);
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}
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public override async Task LeaveRoom()
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{
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if (!isConnected.Value)
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return;
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if (Room == null)
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return;
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await base.LeaveRoom();
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await connection.InvokeAsync(nameof(IMultiplayerServer.LeaveRoom));
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}
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public override Task TransferHost(int userId)
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{
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if (!isConnected.Value)
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return Task.CompletedTask;
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return connection.InvokeAsync(nameof(IMultiplayerServer.TransferHost), userId);
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}
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public override Task ChangeSettings(MultiplayerRoomSettings settings)
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{
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if (!isConnected.Value)
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return Task.CompletedTask;
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return connection.InvokeAsync(nameof(IMultiplayerServer.ChangeSettings), settings);
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}
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public override Task ChangeState(MultiplayerUserState newState)
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{
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if (!isConnected.Value)
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return Task.CompletedTask;
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return connection.InvokeAsync(nameof(IMultiplayerServer.ChangeState), newState);
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}
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public override Task StartMatch()
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{
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if (!isConnected.Value)
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return Task.CompletedTask;
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return connection.InvokeAsync(nameof(IMultiplayerServer.StartMatch));
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}
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}
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}
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