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https://gitlab.com/Kwoth/nadekobot.git
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More restructuring
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@@ -1,218 +0,0 @@
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#nullable disable
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using Ayu.Discord.Voice;
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using System.Reflection;
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namespace NadekoBot.Modules.Music.Services;
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public sealed class AyuVoiceStateService : INService
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{
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// public delegate Task VoiceProxyUpdatedDelegate(ulong guildId, IVoiceProxy proxy);
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// public event VoiceProxyUpdatedDelegate OnVoiceProxyUpdate = delegate { return Task.CompletedTask; };
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private readonly ConcurrentDictionary<ulong, IVoiceProxy> _voiceProxies = new();
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private readonly ConcurrentDictionary<ulong, SemaphoreSlim> _voiceGatewayLocks = new();
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private readonly DiscordSocketClient _client;
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private readonly MethodInfo _sendVoiceStateUpdateMethodInfo;
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private readonly object _dnetApiClient;
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private readonly ulong _currentUserId;
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public AyuVoiceStateService(DiscordSocketClient client)
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{
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_client = client;
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_currentUserId = _client.CurrentUser.Id;
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var prop = _client.GetType()
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.GetProperties(BindingFlags.NonPublic | BindingFlags.Instance)
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.First(x => x.Name == "ApiClient" && x.PropertyType.Name == "DiscordSocketApiClient");
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_dnetApiClient = prop.GetValue(_client, null);
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_sendVoiceStateUpdateMethodInfo = _dnetApiClient.GetType()
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.GetMethod("SendVoiceStateUpdateAsync",
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new[]
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{
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typeof(ulong), typeof(ulong?), typeof(bool),
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typeof(bool), typeof(RequestOptions)
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});
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_client.LeftGuild += ClientOnLeftGuild;
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}
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private Task ClientOnLeftGuild(SocketGuild guild)
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{
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if (_voiceProxies.TryRemove(guild.Id, out var proxy))
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{
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proxy.StopGateway();
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proxy.SetGateway(null);
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}
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return Task.CompletedTask;
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}
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private Task InvokeSendVoiceStateUpdateAsync(
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ulong guildId,
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ulong? channelId = null,
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bool isDeafened = false,
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bool isMuted = false)
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// return _voiceStateUpdate(guildId, channelId, isDeafened, isMuted);
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=> (Task)_sendVoiceStateUpdateMethodInfo.Invoke(_dnetApiClient,
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new object[] { guildId, channelId, isMuted, isDeafened, null });
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private Task SendLeaveVoiceChannelInternalAsync(ulong guildId)
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=> InvokeSendVoiceStateUpdateAsync(guildId);
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private Task SendJoinVoiceChannelInternalAsync(ulong guildId, ulong channelId)
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=> InvokeSendVoiceStateUpdateAsync(guildId, channelId);
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private SemaphoreSlim GetVoiceGatewayLock(ulong guildId)
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=> _voiceGatewayLocks.GetOrAdd(guildId, new SemaphoreSlim(1, 1));
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private async Task LeaveVoiceChannelInternalAsync(ulong guildId)
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{
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var complete = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
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Task OnUserVoiceStateUpdated(SocketUser user, SocketVoiceState oldState, SocketVoiceState newState)
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{
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if (user is SocketGuildUser guildUser && guildUser.Guild.Id == guildId && newState.VoiceChannel?.Id is null)
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complete.TrySetResult(true);
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return Task.CompletedTask;
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}
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try
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{
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_client.UserVoiceStateUpdated += OnUserVoiceStateUpdated;
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if (_voiceProxies.TryGetValue(guildId, out var proxy))
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{
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_ = proxy.StopGateway();
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proxy.SetGateway(null);
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}
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await SendLeaveVoiceChannelInternalAsync(guildId);
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await Task.WhenAny(Task.Delay(1500), complete.Task);
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}
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finally
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{
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_client.UserVoiceStateUpdated -= OnUserVoiceStateUpdated;
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}
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}
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public async Task LeaveVoiceChannel(ulong guildId)
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{
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var gwLock = GetVoiceGatewayLock(guildId);
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await gwLock.WaitAsync();
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try
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{
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await LeaveVoiceChannelInternalAsync(guildId);
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}
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finally
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{
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gwLock.Release();
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}
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}
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private async Task<IVoiceProxy> InternalConnectToVcAsync(ulong guildId, ulong channelId)
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{
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var voiceStateUpdatedSource =
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new TaskCompletionSource<string>(TaskCreationOptions.RunContinuationsAsynchronously);
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var voiceServerUpdatedSource =
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new TaskCompletionSource<SocketVoiceServer>(TaskCreationOptions.RunContinuationsAsynchronously);
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Task OnUserVoiceStateUpdated(SocketUser user, SocketVoiceState oldState, SocketVoiceState newState)
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{
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if (user is SocketGuildUser guildUser && guildUser.Guild.Id == guildId)
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{
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if (newState.VoiceChannel?.Id == channelId)
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voiceStateUpdatedSource.TrySetResult(newState.VoiceSessionId);
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voiceStateUpdatedSource.TrySetResult(null);
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}
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return Task.CompletedTask;
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}
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Task OnVoiceServerUpdated(SocketVoiceServer data)
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{
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if (data.Guild.Id == guildId)
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voiceServerUpdatedSource.TrySetResult(data);
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return Task.CompletedTask;
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}
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try
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{
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_client.VoiceServerUpdated += OnVoiceServerUpdated;
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_client.UserVoiceStateUpdated += OnUserVoiceStateUpdated;
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await SendJoinVoiceChannelInternalAsync(guildId, channelId);
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// create a delay task, how much to wait for gateway response
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using var cts = new CancellationTokenSource();
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var delayTask = Task.Delay(2500, cts.Token);
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// either delay or successful voiceStateUpdate
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var maybeUpdateTask = Task.WhenAny(delayTask, voiceStateUpdatedSource.Task);
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// either delay or successful voiceServerUpdate
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var maybeServerTask = Task.WhenAny(delayTask, voiceServerUpdatedSource.Task);
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// wait for both to end (max 1s) and check if either of them is a delay task
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var results = await Task.WhenAll(maybeUpdateTask, maybeServerTask);
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if (results[0] == delayTask || results[1] == delayTask)
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// if either is delay, return null - connection unsuccessful
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return null;
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else
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cts.Cancel();
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// if both are succesful, that means we can safely get
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// the values from completion sources
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var session = await voiceStateUpdatedSource.Task;
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// session can be null. Means we disconnected, or connected to the wrong channel (?!)
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if (session is null)
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return null;
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var voiceServerData = await voiceServerUpdatedSource.Task;
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VoiceGateway CreateVoiceGatewayLocal()
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{
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return new(guildId, _currentUserId, session, voiceServerData.Token, voiceServerData.Endpoint);
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}
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var current = _voiceProxies.AddOrUpdate(guildId,
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_ => new VoiceProxy(CreateVoiceGatewayLocal()),
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(gid, currentProxy) =>
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{
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_ = currentProxy.StopGateway();
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currentProxy.SetGateway(CreateVoiceGatewayLocal());
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return currentProxy;
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});
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_ = current.StartGateway(); // don't await, this blocks until gateway is closed
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return current;
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}
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finally
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{
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_client.VoiceServerUpdated -= OnVoiceServerUpdated;
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_client.UserVoiceStateUpdated -= OnUserVoiceStateUpdated;
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}
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}
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public async Task<IVoiceProxy> JoinVoiceChannel(ulong guildId, ulong channelId, bool forceReconnect = true)
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{
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var gwLock = GetVoiceGatewayLock(guildId);
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await gwLock.WaitAsync();
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try
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{
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await LeaveVoiceChannelInternalAsync(guildId);
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return await InternalConnectToVcAsync(guildId, channelId);
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}
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finally
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{
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gwLock.Release();
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}
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}
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public bool TryGetProxy(ulong guildId, out IVoiceProxy proxy)
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=> _voiceProxies.TryGetValue(guildId, out proxy);
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}
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