Merged Discord.Net.Audio into the main project, starting adding IVoiceChannel.ConnectAsync()

src/Discord.Net.Audio/AudioConfig.cs

@@ -1,17 +0,0 @@
-using Discord.Net.WebSockets;
-
-namespace Discord.Audio
-{
-    public class AudioConfig
-    {
-        /// <summary> Gets or sets the time (in milliseconds) to wait for the websocket to connect and initialize. </summary>
-        public int ConnectionTimeout { get; set; } = 30000;
-        /// <summary> Gets or sets the time (in milliseconds) to wait after an unexpected disconnect before reconnecting. </summary>
-        public int ReconnectDelay { get; set; } = 1000;
-        /// <summary> Gets or sets the time (in milliseconds) to wait after an reconnect fails before retrying. </summary>
-        public int FailedReconnectDelay { get; set; } = 15000;
-
-        /// <summary> Gets or sets the provider used to generate new websocket connections. </summary>
-        public WebSocketProvider WebSocketProvider { get; set; } = () => new DefaultWebSocketClient();
-    }
-}

src/Discord.Net.Audio/Discord.Net.Audio.xproj

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0.25123" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0.25123</VisualStudioVersion>
-    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
-  </PropertyGroup>
-  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.Props" Condition="'$(VSToolsPath)' != ''" />
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>ddfcc44f-934e-478a-978c-69cdda2a1c5b</ProjectGuid>
-    <RootNamespace>Discord.Audio</RootNamespace>
-    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">.\obj</BaseIntermediateOutputPath>
-    <OutputPath Condition="'$(OutputPath)'=='' ">.\bin\</OutputPath>
-  </PropertyGroup>
-  <PropertyGroup>
-    <SchemaVersion>2.0</SchemaVersion>
-  </PropertyGroup>
-  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.targets" Condition="'$(VSToolsPath)' != ''" />
-</Project>

src/Discord.Net.Audio/Logger.cs

@@ -1,6 +0,0 @@
-namespace Discord.Audio
-{
-    internal class Logger
-    {
-    }
-}

src/Discord.Net.Audio/Utilities/AsyncEvent.cs

@@ -1,74 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Threading.Tasks;
-
-namespace Discord
-{
-    public class AsyncEvent<T>
-    {
-        private readonly object _subLock = new object();
-        internal ImmutableArray<T> _subscriptions;
-
-        public IReadOnlyList<T> Subscriptions => _subscriptions;
-
-        public AsyncEvent()
-        {
-            _subscriptions = ImmutableArray.Create<T>();
-        }
-
-        public void Add(T subscriber)
-        {
-            lock (_subLock)
-                _subscriptions = _subscriptions.Add(subscriber);
-        }
-        public void Remove(T subscriber)
-        {
-            lock (_subLock)
-                _subscriptions = _subscriptions.Remove(subscriber);
-        }
-    }
-
-    public static class EventExtensions
-    { 
-        public static async Task InvokeAsync(this AsyncEvent<Func<Task>> eventHandler)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            if (subscribers.Count > 0)
-            {
-                for (int i = 0; i < subscribers.Count; i++)
-                    await subscribers[i].Invoke().ConfigureAwait(false);
-            }
-        }
-        public static async Task InvokeAsync<T>(this AsyncEvent<Func<T, Task>> eventHandler, T arg)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            for (int i = 0; i < subscribers.Count; i++)
-                await subscribers[i].Invoke(arg).ConfigureAwait(false);
-        }
-        public static async Task InvokeAsync<T1, T2>(this AsyncEvent<Func<T1, T2, Task>> eventHandler, T1 arg1, T2 arg2)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            for (int i = 0; i < subscribers.Count; i++)
-                await subscribers[i].Invoke(arg1, arg2).ConfigureAwait(false);
-        }
-        public static async Task InvokeAsync<T1, T2, T3>(this AsyncEvent<Func<T1, T2, T3, Task>> eventHandler, T1 arg1, T2 arg2, T3 arg3)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            for (int i = 0; i < subscribers.Count; i++)
-                await subscribers[i].Invoke(arg1, arg2, arg3).ConfigureAwait(false);
-        }
-        public static async Task InvokeAsync<T1, T2, T3, T4>(this AsyncEvent<Func<T1, T2, T3, T4, Task>> eventHandler, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            for (int i = 0; i < subscribers.Count; i++)
-                await subscribers[i].Invoke(arg1, arg2, arg3, arg4).ConfigureAwait(false);
-        }
-        public static async Task InvokeAsync<T1, T2, T3, T4, T5>(this AsyncEvent<Func<T1, T2, T3, T4, T5, Task>> eventHandler, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5)
-        {
-            var subscribers = eventHandler.Subscriptions;
-            for (int i = 0; i < subscribers.Count; i++)
-                await subscribers[i].Invoke(arg1, arg2, arg3, arg4, arg5).ConfigureAwait(false);
-        }
-    }
-}

src/Discord.Net.Audio/project.json

@@ -1,35 +0,0 @@
-{
-  "version": "1.0.0-dev",
-  "description": "A Discord.Net extension adding audio support.",
-  "authors": [ "RogueException" ],
-
-  "packOptions": {
-    "tags": [ "discord", "discordapp" ],
-    "licenseUrl": "http://opensource.org/licenses/MIT",
-    "projectUrl": "https://github.com/RogueException/Discord.Net",
-    "repository": {
-      "type": "git",
-      "url": "git://github.com/RogueException/Discord.Net"
-    }
-  },
-
-  "buildOptions": {
-    "allowUnsafe": true,
-    "warningsAsErrors": false
-  },
-
-  "dependencies": {
-    "Discord.Net": "1.0.0-dev",
-    "System.Runtime.InteropServices": "4.1.0"
-  },
-
-  "frameworks": {
-    "netstandard1.3": {
-      "imports": [
-        "dotnet5.4",
-        "dnxcore50",
-        "portable-net45+win8"
-      ]
-    }
-  }
-}

src/Discord.Net/API/DiscordAPIClient.cs

@@ -398,6 +398,17 @@ namespace Discord.API
         {
             await SendGatewayAsync(GatewayOpCode.RequestGuildMembers, new RequestMembersParams { GuildIds = guildIds, Query = "", Limit = 0 }, options: options).ConfigureAwait(false);
         }
+        public async Task SendVoiceStateUpdateAsync(ulong guildId, ulong? channelId, bool selfDeaf, bool selfMute, RequestOptions options = null)
+        {
+            var payload = new VoiceStateUpdateParams
+            {
+                GuildId = guildId,
+                ChannelId = channelId,
+                SelfDeaf = selfDeaf,
+                SelfMute = selfMute
+            };
+            await SendGatewayAsync(GatewayOpCode.VoiceStateUpdate, payload, options: options).ConfigureAwait(false);
+        }
 
         //Channels
         public async Task<Channel> GetChannelAsync(ulong channelId, RequestOptions options = null)

src/Discord.Net/API/DiscordVoiceAPIClient.cs

@@ -14,7 +14,7 @@ using System.Threading.Tasks;
 
 namespace Discord.Audio
 {
-    public class AudioAPIClient
+    public class DiscordVoiceAPIClient
     {
         public const int MaxBitrate = 128;
         private const string Mode = "xsalsa20_poly1305";
@@ -40,7 +40,7 @@ namespace Discord.Audio
         public string SessionId { get; }
         public ConnectionState ConnectionState { get; private set; }
 
-        internal AudioAPIClient(ulong guildId, ulong userId, string sessionId, string token, WebSocketProvider webSocketProvider, JsonSerializer serializer = null)
+        internal DiscordVoiceAPIClient(ulong guildId, ulong userId, string sessionId, string token, WebSocketProvider webSocketProvider, JsonSerializer serializer = null)
         {
             GuildId = guildId;
             _userId = userId;

src/Discord.Net/API/Gateway/GuildEmojiUpdateEvent.cs

@@ -0,0 +1,12 @@
+using Newtonsoft.Json;
+
+namespace Discord.API.Gateway
+{
+    public class GuildEmojiUpdateEvent
+    {
+        [JsonProperty("guild_id")]
+        public ulong GuildId;
+        [JsonProperty("emojis")]
+        public Emoji[] Emojis;
+    }
+}

src/Discord.Net/API/Gateway/RequestMembersParams.cs

@@ -1,15 +1,19 @@
 using Newtonsoft.Json;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace Discord.API.Gateway
 {
     public class RequestMembersParams
     {
-        [JsonProperty("guild_id")]
-        public IEnumerable<ulong> GuildIds { get; set; }
         [JsonProperty("query")]
         public string Query { get; set; }
         [JsonProperty("limit")]
         public int Limit { get; set; }
+
+        [JsonProperty("guild_id")]
+        public IEnumerable<ulong> GuildIds { get; set; }
+        [JsonIgnore]
+        public IEnumerable<IGuild> Guilds { set { GuildIds = value.Select(x => x.Id); } }
     }
 }

src/Discord.Net/API/Gateway/UpdateVoiceParams.cs

@@ -1,16 +0,0 @@
-using Newtonsoft.Json;
-
-namespace Discord.API.Gateway
-{
-    public class UpdateVoiceParams
-    {
-        [JsonProperty("guild_id")]
-        public ulong? GuildId { get; set; }
-        [JsonProperty("channel_id")]
-        public ulong? ChannelId { get; set; }
-        [JsonProperty("self_mute")]
-        public bool IsSelfMuted { get; set; }
-        [JsonProperty("self_deaf")]
-        public bool IsSelfDeafened { get; set; }
-    }
-}

src/Discord.Net/API/Gateway/VoiceStateUpdateParams.cs

@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+
+namespace Discord.API.Gateway
+{
+    public class VoiceStateUpdateParams
+    {
+        [JsonProperty("self_mute")]
+        public bool SelfMute { get; set; }
+        [JsonProperty("self_deaf")]
+        public bool SelfDeaf { get; set; }
+
+        [JsonProperty("guild_id")]
+        public ulong GuildId { get; set; }
+        [JsonIgnore]
+        public IGuild Guild { set { GuildId = value.Id; } }
+        [JsonProperty("channel_id")]
+        public ulong? ChannelId { get; set; }
+        [JsonIgnore]
+        public IChannel Channel { set { ChannelId = value?.Id; } }
+    }
+}

src/Discord.Net/Audio/AudioClient.cs

@@ -1,15 +1,15 @@
 using Discord.API.Voice;
 using Discord.Logging;
 using Discord.Net.Converters;
+using Discord.Net.WebSockets;
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 using System;
 using System.Threading;
 using System.Threading.Tasks;
 
 namespace Discord.Audio
 {
-    public class AudioClient
+    internal class AudioClient : IAudioClient
     {
         public event Func<Task> Connected
         {
@@ -30,12 +30,11 @@ namespace Discord.Audio
         }
         private readonly AsyncEvent<Func<int, int, Task>> _latencyUpdatedEvent = new AsyncEvent<Func<int, int, Task>>();
 
-        private readonly ILogger _webSocketLogger;
+        private readonly ILogger _webSocketLogger, _udpLogger;
 #if BENCHMARK
         private readonly ILogger _benchmarkLogger;
 #endif
         private readonly JsonSerializer _serializer;
-        private readonly int _connectionTimeout, _reconnectDelay, _failedReconnectDelay;
         internal readonly SemaphoreSlim _connectionLock;
 
         private TaskCompletionSource<bool> _connectTask;
@@ -45,20 +44,18 @@ namespace Discord.Audio
         private bool _isReconnecting;
         private string _url;
 
-        public AudioAPIClient ApiClient { get; private set; }
+        private DiscordSocketClient Discord { get; }
-        /// <summary> Gets the current connection state of this client. </summary>
+        public DiscordVoiceAPIClient ApiClient { get; private set; }
         public ConnectionState ConnectionState { get; private set; }
-        /// <summary> Gets the estimated round-trip latency, in milliseconds, to the gateway server. </summary>
         public int Latency { get; private set; }
 
         /// <summary> Creates a new REST/WebSocket discord client. </summary>
-        internal AudioClient(ulong guildId, ulong userId, string sessionId, string token, AudioConfig config, ILogManager logManager)
+        internal AudioClient(DiscordSocketClient discord, ulong guildId, ulong userId, string sessionId, string token, WebSocketProvider webSocketProvider, ILogManager logManager)
         {
-            _connectionTimeout = config.ConnectionTimeout;
+            Discord = discord;
-            _reconnectDelay = config.ReconnectDelay;
-            _failedReconnectDelay = config.FailedReconnectDelay;
 
-            _webSocketLogger = logManager.CreateLogger("AudioWS");
+            _webSocketLogger = logManager.CreateLogger("Audio");
+            _udpLogger = logManager.CreateLogger("AudioUDP");
 #if BENCHMARK
             _benchmarkLogger = logManager.CreateLogger("Benchmark");
 #endif
@@ -72,8 +69,7 @@ namespace Discord.Audio
                 e.ErrorContext.Handled = true;
             };
             
-            var webSocketProvider = config.WebSocketProvider; //TODO: Clean this check
+            ApiClient = new DiscordVoiceAPIClient(guildId, userId, sessionId, token, webSocketProvider);
-            ApiClient = new AudioAPIClient(guildId, userId, sessionId, token, config.WebSocketProvider);
 
             ApiClient.SentGatewayMessage += async opCode => await _webSocketLogger.DebugAsync($"Sent {(VoiceOpCode)opCode}").ConfigureAwait(false);
             ApiClient.ReceivedEvent += ProcessMessageAsync;

src/Discord.Net/Audio/AudioMode.cs

@@ -1,7 +1,11 @@
-namespace Discord.Audio
+using System;
+
+namespace Discord.Audio
 {
+    [Flags]
     public enum AudioMode : byte
     {
+        Disabled = 0,
         Outgoing = 1,
         Incoming = 2,
         Both = Outgoing | Incoming

src/Discord.Net/Audio/IAudioClient.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Threading.Tasks;
+
+namespace Discord.Audio
+{
+    public interface IAudioClient
+    {
+        event Func<Task> Connected;
+        event Func<Task> Disconnected;
+        event Func<int, int, Task> LatencyUpdated;
+
+        DiscordVoiceAPIClient ApiClient { get; }
+        /// <summary> Gets the current connection state of this client. </summary>
+        ConnectionState ConnectionState { get; }
+        /// <summary> Gets the estimated round-trip latency, in milliseconds, to the gateway server. </summary>
+        int Latency { get; }
+
+        Task DisconnectAsync();
+    }
+}

src/Discord.Net/Audio/Opus/OpusEncoder.cs

@@ -36,7 +36,7 @@ namespace Discord.Audio.Opus
         {
             if (channels != 1 && channels != 2)
                 throw new ArgumentOutOfRangeException(nameof(channels));
-            if (bitrate != null && (bitrate < 1 || bitrate > AudioAPIClient.MaxBitrate))
+            if (bitrate != null && (bitrate < 1 || bitrate > DiscordVoiceAPIClient.MaxBitrate))
                 throw new ArgumentOutOfRangeException(nameof(bitrate));
 
             OpusError error;

src/Discord.Net/Audio/Sodium/SecretBox.cs

@@ -1,8 +1,8 @@
 using System.Runtime.InteropServices;
 
-namespace Discord.Net.Audio
+namespace Discord.Net.Audio.Sodium
 {
-    public unsafe static class LibSodium
+    public unsafe static class SecretBox
     {
         [DllImport("libsodium", EntryPoint = "crypto_secretbox_easy", CallingConvention = CallingConvention.Cdecl)]
         private static extern int SecretBoxEasy(byte* output, byte[] input, long inputLength, byte[] nonce, byte[] secret);

src/Discord.Net/DiscordSocketClient.Events.cs

@@ -3,6 +3,7 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
+    //TODO: Add event docstrings
     public partial class DiscordSocketClient
     {
         //General

src/Discord.Net/DiscordSocketClient.cs

@@ -1,7 +1,9 @@
 using Discord.API.Gateway;
+using Discord.Audio;
 using Discord.Extensions;
 using Discord.Logging;
 using Discord.Net.Converters;
+using Discord.Net.WebSockets;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System;
@@ -14,9 +16,6 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-    //TODO: Add event docstrings
-    //TODO: Add reconnect logic (+ensure the heartbeat task to shut down)
-    //TODO: Add resume logic
     public partial class DiscordSocketClient : DiscordClient, IDiscordClient
     {
         private readonly ConcurrentQueue<ulong> _largeGuilds;
@@ -25,9 +24,6 @@ namespace Discord
         private readonly ILogger _benchmarkLogger;
 #endif
         private readonly JsonSerializer _serializer;
-        private readonly int _connectionTimeout, _reconnectDelay, _failedReconnectDelay;
-        private readonly int _largeThreshold;
-        private readonly int _totalShards;
 
         private string _sessionId;
         private int _lastSeq;
@@ -46,9 +42,17 @@ namespace Discord
         public ConnectionState ConnectionState { get; private set; }
         /// <summary> Gets the estimated round-trip latency, in milliseconds, to the gateway server. </summary>
         public int Latency { get; private set; }
-        
+
+        //From DiscordConfig
+        internal int TotalShards { get; private set; }
+        internal int ConnectionTimeout { get; private set; }
+        internal int ReconnectDelay { get; private set; }
+        internal int FailedReconnectDelay { get; private set; }
         internal int MessageCacheSize { get; private set; }
+        internal int LargeThreshold { get; private set; }
+        internal AudioMode AudioMode { get; private set; }
         internal DataStore DataStore { get; private set; }
+        internal WebSocketProvider WebSocketProvider { get; private set; }
 
         internal CachedSelfUser CurrentUser => _currentUser as CachedSelfUser;
         internal IReadOnlyCollection<CachedGuild> Guilds => DataStore.Guilds;
@@ -62,15 +66,15 @@ namespace Discord
             : base(config)
         {
             ShardId = config.ShardId;
-            _totalShards = config.TotalShards;
+            TotalShards = config.TotalShards;
-
+            ConnectionTimeout = config.ConnectionTimeout;
-            _connectionTimeout = config.ConnectionTimeout;
+            ReconnectDelay = config.ReconnectDelay;
-            _reconnectDelay = config.ReconnectDelay;
+            FailedReconnectDelay = config.FailedReconnectDelay;
-            _failedReconnectDelay = config.FailedReconnectDelay;
-
             MessageCacheSize = config.MessageCacheSize;
-            _largeThreshold = config.LargeThreshold;
+            LargeThreshold = config.LargeThreshold;
-            
+            AudioMode = config.AudioMode;
+            WebSocketProvider = config.WebSocketProvider;
+
             _gatewayLogger = _log.CreateLogger("Gateway");
 #if BENCHMARK
             _benchmarkLogger = _log.CreateLogger("Benchmark");
@@ -471,7 +475,7 @@ namespace Discord
                     case GatewayOpCode.Dispatch:
                         switch (type)
                         {
-                            //Global
+                            //Connection
                             case "READY":
                                 {
                                     await _gatewayLogger.DebugAsync("Received Dispatch (READY)").ConfigureAwait(false);
@@ -507,6 +511,11 @@ namespace Discord
                                     await _gatewayLogger.InfoAsync("Ready").ConfigureAwait(false);
                                 }
                                 break;
+                            case "RESUMED":
+                                await _gatewayLogger.DebugAsync("Received Dispatch (RESUMED)").ConfigureAwait(false);
+
+                                await _gatewayLogger.InfoAsync("Resume").ConfigureAwait(false);
+                                return;
 
                             //Guilds
                             case "GUILD_CREATE":
@@ -569,6 +578,28 @@ namespace Discord
                                     }
                                 }
                                 break;
+                            case "GUILD_EMOJI_UPDATE": //TODO: Add
+                                {
+                                    await _gatewayLogger.DebugAsync("Received Dispatch (GUILD_EMOJI_UPDATE)").ConfigureAwait(false);
+
+                                    var data = (payload as JToken).ToObject<API.Gateway.GuildEmojiUpdateEvent>(_serializer);
+                                    var guild = DataStore.GetGuild(data.GuildId);
+                                    if (guild != null)
+                                    {
+                                        var before = guild.Clone();
+                                        guild.Update(data, UpdateSource.WebSocket);
+                                        await _guildUpdatedEvent.InvokeAsync(before, guild).ConfigureAwait(false);
+                                    }
+                                    else
+                                    {
+                                        await _gatewayLogger.WarningAsync("GUILD_EMOJI_UPDATE referenced an unknown guild.").ConfigureAwait(false);
+                                        return;
+                                    }
+                                }
+                                return;
+                            case "GUILD_INTEGRATIONS_UPDATE":
+                                await _gatewayLogger.DebugAsync("Ignored Dispatch (GUILD_INTEGRATIONS_UPDATE)").ConfigureAwait(false);
+                                return;
                             case "GUILD_DELETE":
                                 {
                                     var data = (payload as JToken).ToObject<ExtendedGuild>(_serializer);
@@ -1099,26 +1130,17 @@ namespace Discord
                                     }
                                 }
                                 break;
+                            case "VOICE_SERVER_UPDATE":
+                                await _gatewayLogger.DebugAsync("Ignored Dispatch (VOICE_SERVER_UPDATE)").ConfigureAwait(false);
+                                return;
 
-                            //Ignored
+                            //Ignored (User only)
                             case "USER_SETTINGS_UPDATE":
                                 await _gatewayLogger.DebugAsync("Ignored Dispatch (USER_SETTINGS_UPDATE)").ConfigureAwait(false);
                                 return;
-                            case "MESSAGE_ACK": //TODO: Add (User only)
+                            case "MESSAGE_ACK":
                                 await _gatewayLogger.DebugAsync("Ignored Dispatch (MESSAGE_ACK)").ConfigureAwait(false);
                                 return;
-                            case "GUILD_EMOJIS_UPDATE": //TODO: Add
-                                await _gatewayLogger.DebugAsync("Ignored Dispatch (GUILD_EMOJIS_UPDATE)").ConfigureAwait(false);
-                                return;
-                            case "GUILD_INTEGRATIONS_UPDATE": //TODO: Add
-                                await _gatewayLogger.DebugAsync("Ignored Dispatch (GUILD_INTEGRATIONS_UPDATE)").ConfigureAwait(false);
-                                return;
-                            case "VOICE_SERVER_UPDATE": //TODO: Add
-                                await _gatewayLogger.DebugAsync("Ignored Dispatch (VOICE_SERVER_UPDATE)").ConfigureAwait(false);
-                                return;
-                            case "RESUMED": //TODO: Add
-                                await _gatewayLogger.DebugAsync("Ignored Dispatch (RESUMED)").ConfigureAwait(false);
-                                return;
 
                             //Others
                             default:

src/Discord.Net/DiscordSocketConfig.cs

@@ -1,4 +1,5 @@
-using Discord.Net.WebSockets;
+using Discord.Audio;
+using Discord.Net.WebSockets;
 
 namespace Discord
 {
@@ -28,7 +29,10 @@ namespace Discord
         /// Decreasing this may reduce CPU usage while increasing login time and network usage. 
         /// </summary>
         public int LargeThreshold { get; set; } = 250;
-        
+
+        /// <summary> Gets or sets the type of audio this DiscordClient supports. </summary>
+        public AudioMode AudioMode { get; set; } = AudioMode.Disabled;
+
         /// <summary> Gets or sets the provider used to generate new websocket connections. </summary>
         public WebSocketProvider WebSocketProvider { get; set; } = () => new DefaultWebSocketClient();
     }

src/Discord.Net/Entities/Channels/IVoiceChannel.cs

@@ -1,4 +1,5 @@
 using Discord.API.Rest;
+using Discord.Audio;
 using System;
 using System.Threading.Tasks;
 
@@ -13,5 +14,7 @@ namespace Discord
 
         /// <summary> Modifies this voice channel. </summary>
         Task ModifyAsync(Action<ModifyVoiceChannelParams> func);
+        /// <summary> Connects to this voice channel. </summary>
+        Task<IAudioClient> ConnectAsync();
     }
 }

src/Discord.Net/Entities/Channels/VoiceChannel.cs

@@ -4,6 +4,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Threading.Tasks;
 using Model = Discord.API.Channel;
+using Discord.Audio;
 
 namespace Discord
 {
@@ -49,6 +50,8 @@ namespace Discord
             throw new NotSupportedException();
         }
 
+        public virtual Task<IAudioClient> ConnectAsync() { throw new NotSupportedException(); }
+
         private string DebuggerDisplay => $"{Name} ({Id}, Voice)";
     }
 }

src/Discord.Net/Entities/Guilds/Guild.cs

@@ -1,4 +1,5 @@
 using Discord.API.Rest;
+using Discord.Audio;
 using Discord.Extensions;
 using System;
 using System.Collections.Concurrent;
@@ -311,6 +312,7 @@ namespace Discord
         IReadOnlyCollection<Emoji> IGuild.Emojis => Emojis;
         IReadOnlyCollection<string> IGuild.Features => Features;
         Task IGuild.DownloadUsersAsync() { throw new NotSupportedException(); }
+        IAudioClient IGuild.AudioClient => null;
 
         IRole IGuild.GetRole(ulong id) => GetRole(id);
     }

src/Discord.Net/Entities/Guilds/IGuild.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Discord.API.Rest;
+using Discord.Audio;
 
 namespace Discord
 {
@@ -37,6 +38,8 @@ namespace Discord
         /// <summary> Gets the id of the region hosting this guild's voice channels. </summary>
         string VoiceRegionId { get; }
 
+        /// <summary> Gets the IAudioClient currently associated with this guild. </summary>
+        IAudioClient AudioClient { get; }
         /// <summary> Gets the built-in role containing all users in this guild. </summary>
         IRole EveryoneRole { get; }
         /// <summary> Gets a collection of all custom emojis for this guild. </summary>

src/Discord.Net/Entities/WebSocket/CachedGuild.cs

@@ -1,4 +1,5 @@
-using Discord.Extensions;
+using Discord.Audio;
+using Discord.Extensions;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -6,6 +7,7 @@ using System.Collections.Immutable;
 using System.Linq;
 using System.Threading.Tasks;
 using ChannelModel = Discord.API.Channel;
+using EmojiUpdateModel = Discord.API.Gateway.GuildEmojiUpdateEvent;
 using ExtendedModel = Discord.API.Gateway.ExtendedGuild;
 using MemberModel = Discord.API.GuildMember;
 using Model = Discord.API.Guild;
@@ -25,6 +27,7 @@ namespace Discord
         public bool Available { get; private set; }
         public int MemberCount { get; private set; }
         public int DownloadedMemberCount { get; private set; }
+        public IAudioClient AudioClient { get; private set; }
 
         public bool HasAllMembers => _downloaderPromise.Task.IsCompleted;
         public Task DownloaderPromise => _downloaderPromise.Task;
@@ -102,6 +105,16 @@ namespace Discord
             _voiceStates = voiceStates;
         }
 
+        public void Update(EmojiUpdateModel model, UpdateSource source)
+        {
+            if (source == UpdateSource.Rest && IsAttached) return;
+            
+            var emojis = ImmutableArray.CreateBuilder<Emoji>(model.Emojis.Length);
+            for (int i = 0; i < model.Emojis.Length; i++)
+                emojis.Add(new Emoji(model.Emojis[i]));
+            Emojis = emojis.ToImmutableArray();
+        }
+
         public override Task<IGuildChannel> GetChannelAsync(ulong id) => Task.FromResult<IGuildChannel>(GetChannel(id));
         public override Task<IReadOnlyCollection<IGuildChannel>> GetChannelsAsync() => Task.FromResult<IReadOnlyCollection<IGuildChannel>>(Channels);
         public void AddChannel(ChannelModel model, DataStore dataStore, ConcurrentHashSet<ulong> channels = null)

src/Discord.Net/Entities/WebSocket/CachedVoiceChannel.cs

@@ -1,4 +1,6 @@
-using System.Collections.Generic;
+using Discord.Audio;
+using System;
+using System.Collections.Generic;
 using System.Collections.Immutable;
 using System.Linq;
 using System.Threading.Tasks;
@@ -33,6 +35,19 @@ namespace Discord
             return null;
         }
 
+        public override async Task<IAudioClient> ConnectAsync()
+        {
+            var audioMode = Discord.AudioMode;
+            if (audioMode == AudioMode.Disabled)
+                throw new InvalidOperationException($"Audio is not enabled on this client, {nameof(DiscordSocketConfig.AudioMode)} in {nameof(DiscordSocketConfig)} must be set.");
+
+            await Discord.ApiClient.SendVoiceStateUpdateAsync(Guild.Id, Id,
+                (audioMode & AudioMode.Incoming) == 0, 
+                (audioMode & AudioMode.Outgoing) == 0).ConfigureAwait(false);
+            return null;
+            //TODO: Block and return
+        }
+
         public CachedVoiceChannel Clone() => MemberwiseClone() as CachedVoiceChannel;
 
         ICachedChannel ICachedChannel.Clone() => Clone();

src/Discord.Net/project.json

@@ -28,6 +28,7 @@
     "System.Net.Http": "4.1.0",
     "System.Net.WebSockets.Client": "4.0.0",
     "System.Reflection.Extensions": "4.0.1",
+    "System.Runtime.InteropServices": "4.1.0",
     "System.Runtime.Serialization.Primitives": "4.1.1",
     "System.Text.RegularExpressions": "4.1.0"
   },