Switched ids to use int64 rather than strings

src/Discord.Net.Commands/Permissions/Userlist/BlacklistService.cs

@@ -4,7 +4,7 @@ namespace Discord.Commands.Permissions.Userlist
 {
     public class BlacklistService : UserlistService
 	{
-		public BlacklistService(IEnumerable<string> initialList = null)
+		public BlacklistService(IEnumerable<long> initialList = null)
 			: base(initialList)
 		{
 		}

src/Discord.Net.Commands/Permissions/Userlist/UserlistService.cs

@@ -7,18 +7,18 @@ namespace Discord.Commands.Permissions.Userlist
 {
     public class UserlistService : IService
 	{
-		protected readonly ConcurrentDictionary<string, bool> _userList;
+		protected readonly ConcurrentDictionary<long, bool> _userList;
 		private DiscordClient _client;
 
 		public DiscordClient Client => _client;
-		public IEnumerable<string> UserIds => _userList.Select(x => x.Key);
+		public IEnumerable<long> UserIds => _userList.Select(x => x.Key);
 
-		public UserlistService(IEnumerable<string> initialList = null)
+		public UserlistService(IEnumerable<long> initialList = null)
 		{
 			if (initialList != null)
-				_userList = new ConcurrentDictionary<string, bool>(initialList.Select(x => new KeyValuePair<string, bool>(x, true)));
+				_userList = new ConcurrentDictionary<long, bool>(initialList.Select(x => new KeyValuePair<long, bool>(x, true)));
 			else
-				_userList = new ConcurrentDictionary<string, bool>();
+				_userList = new ConcurrentDictionary<long, bool>();
 		}
 
 		public void Add(User user)
@@ -26,9 +26,9 @@ namespace Discord.Commands.Permissions.Userlist
 			if (user == null) throw new ArgumentNullException(nameof(user));
 			_userList[user.Id] = true;
 		}
-		public void Add(string userId)
+		public void Add(long userId)
 		{
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 			_userList[userId] = true;
 		}
 		public bool Remove(User user)
@@ -37,9 +37,9 @@ namespace Discord.Commands.Permissions.Userlist
 			bool ignored;
 			return _userList.TryRemove(user.Id, out ignored);
 		}
-		public bool Remove(string userId)
+		public bool Remove(long userId)
 		{
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 			bool ignored;
 			return _userList.TryRemove(userId, out ignored);
 		}

src/Discord.Net.Commands/Permissions/Userlist/WhitelistService.cs

@@ -4,7 +4,7 @@ namespace Discord.Commands.Permissions.Userlist
 {
 	public class WhitelistService : UserlistService
 	{
-		public WhitelistService(IEnumerable<string> initialList = null)
+		public WhitelistService(IEnumerable<long> initialList = null)
 			: base(initialList)
 		{
 		}

src/Discord.Net.Modules/ModuleManager.cs

@@ -47,9 +47,9 @@ namespace Discord.Modules
 		private readonly string _name, _id;
 		private readonly FilterType _filterType;
 		private readonly bool _useServerWhitelist, _useChannelWhitelist, _allowAll, _allowPrivate;
-		private readonly ConcurrentDictionary<string, Server> _enabledServers;
-		private readonly ConcurrentDictionary<string, Channel> _enabledChannels;
-		private readonly ConcurrentDictionary<string, int> _indirectServers;
+		private readonly ConcurrentDictionary<long, Server> _enabledServers;
+		private readonly ConcurrentDictionary<long, Channel> _enabledChannels;
+		private readonly ConcurrentDictionary<long, int> _indirectServers;
 
 		public DiscordClient Client => _client;
 		public string Name => _name;
@@ -70,9 +70,9 @@ namespace Discord.Modules
 			_useChannelWhitelist = filterType.HasFlag(FilterType.ChannelWhitelist);
 			_allowPrivate = filterType.HasFlag(FilterType.AllowPrivate);
 
-			_enabledServers = new ConcurrentDictionary<string, Server>();
-			_enabledChannels = new ConcurrentDictionary<string, Channel>();
-			_indirectServers = new ConcurrentDictionary<string, int>();
+			_enabledServers = new ConcurrentDictionary<long, Server>();
+			_enabledChannels = new ConcurrentDictionary<long, Channel>();
+			_indirectServers = new ConcurrentDictionary<long, int>();
 
 			if (_allowAll || _useServerWhitelist) //Server-only events
 			{

src/Discord.Net.Net45/Discord.Net.csproj

@@ -76,6 +76,15 @@
     <Compile Include="..\Discord.Net\API\Channels.cs">
       <Link>API\Channels.cs</Link>
     </Compile>
+    <Compile Include="..\Discord.Net\API\Converters\LongCollectionConverter.cs">
+      <Link>API\Converters\LongCollectionConverter.cs</Link>
+    </Compile>
+    <Compile Include="..\Discord.Net\API\Converters\LongStringConverter.cs">
+      <Link>API\Converters\LongStringConverter.cs</Link>
+    </Compile>
+    <Compile Include="..\Discord.Net\API\Converters\ShortStringConverter.cs">
+      <Link>API\Converters\ShortStringConverter.cs</Link>
+    </Compile>
     <Compile Include="..\Discord.Net\API\Endpoints.cs">
       <Link>API\Endpoints.cs</Link>
     </Compile>
@@ -220,6 +229,9 @@
     <Compile Include="..\Discord.Net\Helpers\Format.cs">
       <Link>Helpers\Format.cs</Link>
     </Compile>
+    <Compile Include="..\Discord.Net\Helpers\IdConvert.cs">
+      <Link>Helpers\IdConvert.cs</Link>
+    </Compile>
     <Compile Include="..\Discord.Net\Helpers\Mention.cs">
       <Link>Helpers\Mention.cs</Link>
     </Compile>

src/Discord.Net/API/Channels.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System.Collections;
 using System.Collections.Generic;
@@ -12,9 +13,11 @@ namespace Discord.API
 	public class ChannelReference
 	{
 		[JsonProperty("id")]
-		public string Id;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long GuildId;
 		[JsonProperty("name")]
 		public string Name;
 		[JsonProperty("type")]
@@ -27,7 +30,8 @@ namespace Discord.API
 			[JsonProperty("type")]
 			public string Type;
 			[JsonProperty("id")]
-			public string Id;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long Id;
 			[JsonProperty("deny")]
 			public uint Deny;
 			[JsonProperty("allow")]
@@ -35,7 +39,8 @@ namespace Discord.API
 		}
 
 		[JsonProperty("last_message_id")]
-		public string LastMessageId;
+		[JsonConverter(typeof(NullableLongStringConverter))]
+		public long? LastMessageId;
 		[JsonProperty("is_private")]
 		public bool IsPrivate;
 		[JsonProperty("position")]
@@ -59,7 +64,8 @@ namespace Discord.API
 	public class CreatePMChannelRequest
 	{
 		[JsonProperty("recipient_id")]
-		public string RecipientId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long RecipientId;
 	}
 	public class CreateChannelResponse : ChannelInfo { }
 
@@ -82,7 +88,8 @@ namespace Discord.API
 		public sealed class Channel
 		{
 			[JsonProperty("id")]
-			public string Id;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long Id;
 			[JsonProperty("position")]
 			public uint Position;
 		}

src/Discord.Net/API/Converters/LongCollectionConverter.cs

@@ -0,0 +1,75 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+
+namespace Discord.API.Converters
+{
+	internal class EnumerableLongStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(IEnumerable<long>);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			List<long> result = new List<long>();
+			if (reader.TokenType == JsonToken.StartArray)
+			{
+				reader.Read();
+				while (reader.TokenType != JsonToken.EndArray)
+				{
+					result.Add(IdConvert.ToLong((string)reader.Value));
+					reader.Read();
+				}
+			}
+			return result;
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			if (value == null)
+				writer.WriteNull();
+			else
+			{
+				writer.WriteStartArray();
+				foreach (var v in (IEnumerable<long>)value)
+					writer.WriteValue(IdConvert.ToString(v));
+				writer.WriteEndArray();
+			}
+		}
+	}
+
+	internal class LongArrayStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(IEnumerable<long[]>);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			List<long> result = new List<long>();
+			if (reader.TokenType == JsonToken.StartArray)
+			{
+				reader.Read();
+				while (reader.TokenType != JsonToken.EndArray)
+				{
+					result.Add(IdConvert.ToLong((string)reader.Value));
+					reader.Read();
+                }
+			}
+			return result.ToArray();
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			if (value == null)
+				writer.WriteNull();
+			else
+			{
+				writer.WriteStartArray();
+				var a = (long[])value;
+				for (int i = 0; i < a.Length; i++)
+					writer.WriteValue(IdConvert.ToString(a[i]));
+				writer.WriteEndArray();
+			}
+		}
+	}
+}

src/Discord.Net/API/Converters/LongStringConverter.cs

@@ -0,0 +1,37 @@
+using System;
+using Newtonsoft.Json;
+
+namespace Discord.API.Converters
+{
+    internal class LongStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(long);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			return IdConvert.ToLong((string)reader.Value);
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			writer.WriteValue(IdConvert.ToString((long)value));
+		}
+	}
+
+	internal class NullableLongStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(long?);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			return IdConvert.ToNullableLong((string)reader.Value);
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			writer.WriteValue(IdConvert.ToString((long?)value));
+		}
+	}
+}

src/Discord.Net/API/Converters/ShortStringConverter.cs

@@ -0,0 +1,37 @@
+using Newtonsoft.Json;
+using System;
+
+namespace Discord.API.Converters
+{
+	/*internal class ShortStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(short);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			return IdConvert.ToShort((string)reader.Value);
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			writer.WriteValue(IdConvert.ToString((short)value));
+		}
+	}
+
+	internal class NullableShortStringConverter : JsonConverter
+	{
+		public override bool CanConvert(Type objectType)
+		{
+			return objectType == typeof(short?);
+		}
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			return IdConvert.ToNullableShort((string)reader.Value);
+		}
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			writer.WriteValue(IdConvert.ToString((short?)value));
+		}
+	}*/
+}

src/Discord.Net/API/Endpoints.cs

@@ -12,33 +12,35 @@
 		public const string AuthLogout = "auth/logout";
 		
 		public const string Channels = "channels";
-		public static string Channel(string channelId) => $"channels/{channelId}";
-		public static string ChannelInvites(string channelId) => $"channels/{channelId}/invites";
-		public static string ChannelMessages(string channelId) => $"channels/{channelId}/messages";
-		public static string ChannelMessages(string channelId, int limit) => $"channels/{channelId}/messages?limit={limit}";
-		public static string ChannelMessages(string channelId, int limit, string relativeId, string relativeDir) => $"channels/{channelId}/messages?limit={limit}&{relativeDir}={relativeId}";
-        public static string ChannelMessage(string channelId, string msgId) => $"channels/{channelId}/messages/{msgId}";
-		public static string ChannelMessageAck(string channelId, string msgId) => $"channels/{channelId}/messages/{msgId}/ack";
-        public static string ChannelPermission(string channelId, string userOrRoleId) => $"channels/{channelId}/permissions/{userOrRoleId}";
-		public static string ChannelTyping(string channelId) => $"channels/{channelId}/typing";
+		public static string Channel(long channelId) => $"channels/{channelId}";
+		public static string ChannelInvites(long channelId) => $"channels/{channelId}/invites";
+		public static string ChannelMessages(long channelId) => $"channels/{channelId}/messages";
+		public static string ChannelMessages(long channelId, int limit) => $"channels/{channelId}/messages?limit={limit}";
+		public static string ChannelMessages(long channelId, int limit, long relativeId, string relativeDir) => $"channels/{channelId}/messages?limit={limit}&{relativeDir}={relativeId}";
+        public static string ChannelMessage(long channelId, long msgId) => $"channels/{channelId}/messages/{msgId}";
+		public static string ChannelMessageAck(long channelId, long msgId) => $"channels/{channelId}/messages/{msgId}/ack";
+        public static string ChannelPermission(long channelId, long userOrRoleId) => $"channels/{channelId}/permissions/{userOrRoleId}";
+		public static string ChannelTyping(long channelId) => $"channels/{channelId}/typing";
 
 		public const string Servers = "guilds";
-		public static string Server(string serverId) => $"guilds/{serverId}";
-		public static string ServerBan(string serverId, string userId) => $"guilds/{serverId}/bans/{userId}";
-		public static string ServerChannels(string serverId) => $"guilds/{serverId}/channels";
-		public static string ServerInvites(string serverId) => $"guilds/{serverId}/invites";
-		public static string ServerMember(string serverId, string userId) => $"guilds/{serverId}/members/{userId}";
-		public static string ServerPrune(string serverId, int days) => $"guilds/{serverId}/prune?days={days}";
-		public static string ServerRoles(string serverId) => $"guilds/{serverId}/roles";
-		public static string ServerRole(string serverId, string roleId) => $"guilds/{serverId}/roles/{roleId}";
+		public static string Server(long serverId) => $"guilds/{serverId}";
+		public static string ServerBan(long serverId, long userId) => $"guilds/{serverId}/bans/{userId}";
+		public static string ServerChannels(long serverId) => $"guilds/{serverId}/channels";
+		public static string ServerInvites(long serverId) => $"guilds/{serverId}/invites";
+		public static string ServerMember(long serverId, long userId) => $"guilds/{serverId}/members/{userId}";
+		public static string ServerPrune(long serverId, int days) => $"guilds/{serverId}/prune?days={days}";
+		public static string ServerRoles(long serverId) => $"guilds/{serverId}/roles";
+		public static string ServerRole(long serverId, long roleId) => $"guilds/{serverId}/roles/{roleId}";
 
 		public const string Invites = "invite";
-		public static string Invite(string inviteId) => $"invite/{inviteId}";
-		public static string InviteUrl(string inviteId) => $"https://discord.gg/{inviteId}";
+		public static string Invite(long inviteId) => $"invite/{inviteId}";
+		public static string Invite(string inviteIdOrXkcd) => $"invite/{inviteIdOrXkcd}";
+		public static string InviteUrl(long inviteId) => $"https://discord.gg/{inviteId}";
+		public static string InviteUrl(string inviteIdOrXkcd) => $"https://discord.gg/{inviteIdOrXkcd}";
 
 		public const string Users = "users";
-		public static string UserAvatar(string userId, string avatarId) => $"users/{userId}/avatars/{avatarId}.jpg";
-        public static string UserChannels(string userId) => $"users/{userId}/channels";
+		public static string UserAvatar(long userId, string avatarId) => $"users/{userId}/avatars/{avatarId}.jpg";
+        public static string UserChannels(long userId) => $"users/{userId}/channels";
 		public static string UserMe => $"users/@me";
 
 		public const string Voice = "voice";

src/Discord.Net/API/Maintenance.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System;
 
@@ -17,7 +18,8 @@ namespace Discord.API
 		public sealed class PageData
 		{
 			[JsonProperty("id")]
-			public string Id;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long Id;
 			[JsonProperty("name")]
 			public string Name;
 			[JsonProperty("url")]

src/Discord.Net/API/Members.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
@@ -12,9 +13,11 @@ namespace Discord.API
 	public class MemberReference
 	{
 		[JsonProperty("user_id")]
-		public string UserId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long UserId;
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long GuildId;
 
 		[JsonProperty("user")]
 		private UserReference _user;
@@ -33,7 +36,8 @@ namespace Discord.API
 		[JsonProperty("joined_at")]
 		public DateTime? JoinedAt;
 		[JsonProperty("roles")]
-		public string[] Roles;
+		[JsonConverter(typeof(LongArrayStringConverter))]
+		public long[] Roles;
 	}
 	public class ExtendedMemberInfo : MemberInfo
 	{
@@ -49,12 +53,14 @@ namespace Discord.API
 		[JsonProperty("status")]
 		public string Status;
 		[JsonProperty("roles")] //TODO: Might be temporary
-		public string[] Roles;
+		[JsonConverter(typeof(LongArrayStringConverter))]
+		public long[] Roles;
 	}
 	public class VoiceMemberInfo : MemberReference
 	{
 		[JsonProperty("channel_id")]
-		public string ChannelId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long ChannelId;
 		[JsonProperty("session_id")]
 		public string SessionId;
 		[JsonProperty("token")]
@@ -79,7 +85,8 @@ namespace Discord.API
 		[JsonProperty("deaf", NullValueHandling = NullValueHandling.Ignore)]
 		public bool? Deaf;
 		[JsonProperty("roles", NullValueHandling = NullValueHandling.Ignore)]
-		public IEnumerable<string> Roles;
+		[JsonConverter(typeof(EnumerableLongStringConverter))]
+		public IEnumerable<long> Roles;
 	}
 
 	public class PruneUsersResponse

src/Discord.Net/API/Messages.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
@@ -12,11 +13,14 @@ namespace Discord.API
 	public class MessageReference
 	{
 		[JsonProperty("id")]
-		public string Id;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("channel_id")]
-		public string ChannelId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long ChannelId;
 		[JsonProperty("message_id")]
-		public string MessageId { get { return Id; } set { Id = value; } }
+		[JsonConverter(typeof(LongStringConverter))]
+		public long MessageId { get { return Id; } set { Id = value; } }
 	}
 	public class MessageInfo : MessageReference
 	{
@@ -104,7 +108,8 @@ namespace Discord.API
 		[JsonProperty("content")]
 		public string Content;
 		[JsonProperty("mentions")]
-		public IEnumerable<string> Mentions;
+		[JsonConverter(typeof(EnumerableLongStringConverter))]
+		public IEnumerable<long> Mentions;
 		[JsonProperty("nonce", NullValueHandling = NullValueHandling.Ignore)]
 		public string Nonce;
 		[JsonProperty("tts", NullValueHandling = NullValueHandling.Ignore)]
@@ -118,7 +123,8 @@ namespace Discord.API
 		[JsonProperty("content", NullValueHandling = NullValueHandling.Ignore)]
 		public string Content;
 		[JsonProperty("mentions", NullValueHandling = NullValueHandling.Ignore)]
-		public IEnumerable<string> Mentions;
+		[JsonConverter(typeof(EnumerableLongStringConverter))]
+		public IEnumerable<long> Mentions;
 	}
 	public sealed class EditMessageResponse : MessageInfo { }
 
@@ -132,7 +138,8 @@ namespace Discord.API
 		public class Data
 		{
 			[JsonProperty("guild_id")]
-			public string ServerId;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long ServerId;
 			[JsonProperty("query")]
 			public string Query;
 			[JsonProperty("limit")]

src/Discord.Net/API/Permissions.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 
 namespace Discord.API
@@ -10,7 +11,8 @@ namespace Discord.API
 	internal sealed class SetChannelPermissionsRequest
 	{
 		[JsonProperty("id")]
-		public string Id;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("type")]
 		public string Type;
 		[JsonProperty("allow")]

src/Discord.Net/API/Presence.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 
 namespace Discord.API
@@ -23,9 +24,11 @@ namespace Discord.API
 	internal sealed class TypingStartEvent
 	{
 		[JsonProperty("user_id")]
-		public string UserId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long UserId;
 		[JsonProperty("channel_id")]
-		public string ChannelId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long ChannelId;
 		[JsonProperty("timestamp")]
 		public int Timestamp;
 	}

src/Discord.Net/API/Roles.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System.Collections;
 using System.Collections.Generic;
@@ -12,12 +13,17 @@ namespace Discord.API
 	public class RoleReference
 	{
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long GuildId;
 		[JsonProperty("role_id")]
-		public string RoleId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long RoleId;
 	}
 	public class RoleInfo
 	{
+		[JsonProperty("id")]
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("permissions")]
 		public uint? Permissions;
 		[JsonProperty("name")]
@@ -28,8 +34,6 @@ namespace Discord.API
 		public bool? Hoist;
 		[JsonProperty("color")]
 		public uint? Color;
-		[JsonProperty("id")]
-		public string Id;
 		[JsonProperty("managed")]
 		public bool? Managed;
 	}
@@ -57,7 +61,8 @@ namespace Discord.API
 		public sealed class Role
 		{
 			[JsonProperty("id")]
-			public string Id;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long Id;
 			[JsonProperty("position")]
 			public uint Position;
 		}
@@ -72,14 +77,16 @@ namespace Discord.API
 	internal sealed class RoleCreateEvent
 	{
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long GuildId;
 		[JsonProperty("role")]
 		public RoleInfo Data;
 	}
 	internal sealed class RoleUpdateEvent
 	{
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long GuildId;
 		[JsonProperty("role")]
 		public RoleInfo Data;
 	}

src/Discord.Net/API/Servers.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System;
 
@@ -11,18 +12,21 @@ namespace Discord.API
 	public class GuildReference
 	{
 		[JsonProperty("id")]
-		public string Id;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("name")]
 		public string Name;
 	}
 	public class GuildInfo : GuildReference
 	{
 		[JsonProperty("afk_channel_id")]
-		public string AFKChannelId;
+		[JsonConverter(typeof(NullableLongStringConverter))]
+		public long? AFKChannelId;
 		[JsonProperty("afk_timeout")]
 		public int? AFKTimeout;
 		[JsonProperty("embed_channel_id")]
-		public string EmbedChannelId;
+		[JsonConverter(typeof(NullableLongStringConverter))]
+		public long? EmbedChannelId;
 		[JsonProperty("embed_enabled")]
 		public bool EmbedEnabled;
 		[JsonProperty("icon")]
@@ -30,7 +34,8 @@ namespace Discord.API
 		[JsonProperty("joined_at")]
 		public DateTime? JoinedAt;
 		[JsonProperty("owner_id")]
-		public string OwnerId;
+		[JsonConverter(typeof(NullableLongStringConverter))]
+		public long? OwnerId;
 		[JsonProperty("region")]
 		public string Region;
 		[JsonProperty("roles")]
@@ -70,7 +75,8 @@ namespace Discord.API
 		[JsonProperty("icon", NullValueHandling = NullValueHandling.Ignore)]
 		public string Icon;
 		[JsonProperty("afk_channel_id", NullValueHandling = NullValueHandling.Ignore)]
-		public string AFKChannelId;
+		[JsonConverter(typeof(NullableLongStringConverter))]
+		public long? AFKChannelId;
 		[JsonProperty("afk_timeout", NullValueHandling = NullValueHandling.Ignore)]
 		public int AFKTimeout;
 	}

src/Discord.Net/API/Users.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 
 namespace Discord.API
@@ -12,9 +13,10 @@ namespace Discord.API
 		[JsonProperty("username")]
 		public string Username;
 		[JsonProperty("id")]
-		public string Id;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long Id;
 		[JsonProperty("discriminator")]
-		public string Discriminator;
+		public short? Discriminator;
 		[JsonProperty("avatar")]
 		public string Avatar;
 	}

src/Discord.Net/API/Voice.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS0649
 #pragma warning disable CS0169
 
+using Discord.API.Converters;
 using Newtonsoft.Json;
 using System.Collections.Generic;
 
@@ -22,7 +23,7 @@ namespace Discord.API
 		}
 	}
 
-	public class GetIceResponse
+	/*public class GetIceResponse
 	{
 		[JsonProperty("ttl")]
 		public string TTL;
@@ -38,7 +39,7 @@ namespace Discord.API
 			[JsonProperty("credential")]
 			public string Credential;
 		}
-	}
+	}*/
 
 	//Commands
 	internal sealed class JoinVoiceCommand : WebSocketMessage<JoinVoiceCommand.Data>
@@ -47,9 +48,11 @@ namespace Discord.API
 		public class Data
 		{
 			[JsonProperty("guild_id")]
-			public string ServerId;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long ServerId;
 			[JsonProperty("channel_id")]
-			public string ChannelId;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long ChannelId;
 			[JsonProperty("self_mute")]
 			public string SelfMute;
 			[JsonProperty("self_deaf")]
@@ -61,7 +64,8 @@ namespace Discord.API
 	internal sealed class VoiceServerUpdateEvent
 	{
 		[JsonProperty("guild_id")]
-		public string GuildId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long ServerId;
 		[JsonProperty("endpoint")]
 		public string Endpoint;
 		[JsonProperty("token")]
@@ -75,50 +79,52 @@ namespace Discord.API
 		public class Data
 		{
 			[JsonProperty("server_id")]
-			public string ServerId;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long ServerId;
 			[JsonProperty("user_id")]
-			public string UserId;
+			[JsonConverter(typeof(LongStringConverter))]
+			public long UserId;
 			[JsonProperty("session_id")]
 			public string SessionId;
 			[JsonProperty("token")]
 			public string Token;
 		}
 	}
-	internal sealed class VoiceLogin2Command : WebSocketMessage<VoiceLogin2Command.Data>
+internal sealed class VoiceLogin2Command : WebSocketMessage<VoiceLogin2Command.Data>
+{
+	public VoiceLogin2Command() : base(1) { }
+	public class Data
 	{
-		public VoiceLogin2Command() : base(1) { }
-		public class Data
+		public class SocketInfo
 		{
-			public class SocketInfo
-			{
-				[JsonProperty("address")]
-				public string Address;
-				[JsonProperty("port")]
-				public int Port;
-				[JsonProperty("mode")]
-				public string Mode = "xsalsa20_poly1305";
-			}
-			[JsonProperty("protocol")]
-			public string Protocol = "udp";
-			[JsonProperty("data")]
-			public SocketInfo SocketData = new SocketInfo();
+			[JsonProperty("address")]
+			public string Address;
+			[JsonProperty("port")]
+			public int Port;
+			[JsonProperty("mode")]
+			public string Mode = "xsalsa20_poly1305";
 		}
+		[JsonProperty("protocol")]
+		public string Protocol = "udp";
+		[JsonProperty("data")]
+		public SocketInfo SocketData = new SocketInfo();
 	}
-	internal sealed class VoiceKeepAliveCommand : WebSocketMessage<object>
-	{
-		public VoiceKeepAliveCommand() : base(3, null) { }
-	}
-	internal sealed class IsTalkingCommand : WebSocketMessage<IsTalkingCommand.Data>
+}
+internal sealed class VoiceKeepAliveCommand : WebSocketMessage<object>
+{
+	public VoiceKeepAliveCommand() : base(3, null) { }
+}
+internal sealed class IsTalkingCommand : WebSocketMessage<IsTalkingCommand.Data>
+{
+	public IsTalkingCommand() : base(5) { }
+	public class Data
 	{
-		public IsTalkingCommand() : base(5) { }
-		public class Data
-		{
-			[JsonProperty("delay")]
-			public int Delay;
-			[JsonProperty("speaking")]
-			public bool IsSpeaking;
-		}
+		[JsonProperty("delay")]
+		public int Delay;
+		[JsonProperty("speaking")]
+		public bool IsSpeaking;
 	}
+}
 
 	//Events (Voice)
 	public class VoiceReadyEvent
@@ -144,7 +150,8 @@ namespace Discord.API
 	public class IsTalkingEvent
 	{
 		[JsonProperty("user_id")]
-		public string UserId;
+		[JsonConverter(typeof(LongStringConverter))]
+		public long UserId;
 		[JsonProperty("ssrc")]
 		public uint SSRC;
 		[JsonProperty("speaking")]

src/Discord.Net/Audio/IDiscordVoiceClient.cs

@@ -6,7 +6,7 @@ namespace Discord.Audio
 	{
 		IDiscordVoiceBuffer OutputBuffer { get; }
 
-		Task JoinChannel(string channelId);
+		Task JoinChannel(long channelId);
 
 		void SendVoicePCM(byte[] data, int count);
 		void ClearVoicePCM();

src/Discord.Net/DiscordAPIClient.cs

@@ -52,39 +52,39 @@ namespace Discord
 			=> _rest.Post(Endpoints.AuthLogout);
 
 		//Channels
-        public Task<CreateChannelResponse> CreateChannel(string serverId, string name, string channelType)
+        public Task<CreateChannelResponse> CreateChannel(long serverId, string name, string channelType)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 			if (name == null) throw new ArgumentNullException(nameof(name));
 			if (channelType == null) throw new ArgumentNullException(nameof(channelType));
 
 			var request = new CreateChannelRequest { Name = name, Type = channelType };
 			return _rest.Post<CreateChannelResponse>(Endpoints.ServerChannels(serverId), request);
 		}
-		public Task<CreateChannelResponse> CreatePMChannel(string myId, string recipientId)
+		public Task<CreateChannelResponse> CreatePMChannel(long myId, long recipientId)
 		{
-			if (myId == null) throw new ArgumentNullException(nameof(myId));
-			if (recipientId == null) throw new ArgumentNullException(nameof(recipientId));
+			if (myId <= 0) throw new ArgumentOutOfRangeException(nameof(myId));
+			if (recipientId <= 0) throw new ArgumentOutOfRangeException(nameof(recipientId));
 
 			var request = new CreatePMChannelRequest { RecipientId = recipientId };
 			return _rest.Post<CreateChannelResponse>(Endpoints.UserChannels(myId), request);
 		}
-		public Task<DestroyChannelResponse> DestroyChannel(string channelId)
+		public Task<DestroyChannelResponse> DestroyChannel(long channelId)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			return _rest.Delete<DestroyChannelResponse>(Endpoints.Channel(channelId));
 		}
-		public Task<EditChannelResponse> EditChannel(string channelId, string name = null, string topic = null)
+		public Task<EditChannelResponse> EditChannel(long channelId, string name = null, string topic = null)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			var request = new EditChannelRequest { Name = name, Topic = topic };
 			return _rest.Patch<EditChannelResponse>(Endpoints.Channel(channelId), request);
 		}
-		public Task ReorderChannels(string serverId, IEnumerable<string> channelIds, int startPos = 0)
+		public Task ReorderChannels(long serverId, IEnumerable<long> channelIds, int startPos = 0)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 			if (channelIds == null) throw new ArgumentNullException(nameof(channelIds));
 			if (startPos < 0) throw new ArgumentOutOfRangeException(nameof(startPos), "startPos must be a positive integer.");
 
@@ -93,12 +93,12 @@ namespace Discord
 			var request = new ReorderChannelsRequest(channels);
 			return _rest.Patch(Endpoints.ServerChannels(serverId), request);
 		}
-		public Task<GetMessagesResponse> GetMessages(string channelId, int count, string relativeMessageId = null, RelativeDirection relativeDir = RelativeDirection.Before)
+		public Task<GetMessagesResponse> GetMessages(long channelId, int count, long? relativeMessageId = null, RelativeDirection relativeDir = RelativeDirection.Before)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			if (relativeMessageId != null)
-				return _rest.Get<GetMessagesResponse>(Endpoints.ChannelMessages(channelId, count, relativeMessageId, relativeDir == RelativeDirection.Before ? "before" : "after"));
+				return _rest.Get<GetMessagesResponse>(Endpoints.ChannelMessages(channelId, count, relativeMessageId.Value, relativeDir == RelativeDirection.Before ? "before" : "after"));
 			else
 				return _rest.Get<GetMessagesResponse>(Endpoints.ChannelMessages(channelId, count));
 		}
@@ -114,9 +114,9 @@ namespace Discord
 		}
 
 		//Invites
-		public Task<CreateInviteResponse> CreateInvite(string channelId, int maxAge, int maxUses, bool tempMembership, bool hasXkcd)
+		public Task<CreateInviteResponse> CreateInvite(long channelId, int maxAge, int maxUses, bool tempMembership, bool hasXkcd)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			var request = new CreateInviteRequest { MaxAge = maxAge, MaxUses = maxUses, IsTemporary = tempMembership, WithXkcdPass = hasXkcd };
 			return _rest.Post<CreateInviteResponse>(Endpoints.ChannelInvites(channelId), request);
@@ -127,9 +127,9 @@ namespace Discord
 
 			return _rest.Get<GetInviteResponse>(Endpoints.Invite(inviteIdOrXkcd));
 		}
-		public Task<GetInvitesResponse> GetInvites(string serverId)
+		public Task<GetInvitesResponse> GetInvites(long serverId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 
 			return _rest.Get<GetInvitesResponse>(Endpoints.ServerInvites(serverId));
 		}
@@ -147,38 +147,38 @@ namespace Discord
 		}
 
 		//Users
-		public Task EditUser(string serverId, string userId, bool? mute = null, bool? deaf = null, IEnumerable<string> roles = null)
+		public Task EditUser(long serverId, long userId, bool? mute = null, bool? deaf = null, IEnumerable<long> roleIds = null)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 
-			var request = new EditMemberRequest { Mute = mute, Deaf = deaf, Roles = roles };
+			var request = new EditMemberRequest { Mute = mute, Deaf = deaf, Roles = roleIds };
 			return _rest.Patch(Endpoints.ServerMember(serverId, userId), request);
 		}
-		public Task KickUser(string serverId, string userId)
+		public Task KickUser(long serverId, long userId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 
 			return _rest.Delete(Endpoints.ServerMember(serverId, userId));
 		}
-		public Task BanUser(string serverId, string userId)
+		public Task BanUser(long serverId, long userId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 
 			return _rest.Put(Endpoints.ServerBan(serverId, userId));
 		}
-		public Task UnbanUser(string serverId, string userId)
+		public Task UnbanUser(long serverId, long userId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 
 			return _rest.Delete(Endpoints.ServerBan(serverId, userId));
 		}
-		public Task<PruneUsersResponse> PruneUsers(string serverId, int days, bool simulate)
+		public Task<PruneUsersResponse> PruneUsers(long serverId, int days, bool simulate)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 			if (days <= 0) throw new ArgumentOutOfRangeException(nameof(days));
 			
             if (simulate)
@@ -188,93 +188,93 @@ namespace Discord
         }
 
 		//Messages
-		public Task<SendMessageResponse> SendMessage(string channelId, string message, IEnumerable<string> mentionedUserIds = null, string nonce = null, bool isTTS = false)
+		public Task<SendMessageResponse> SendMessage(long channelId, string message, IEnumerable<long> mentionedUserIds = null, string nonce = null, bool isTTS = false)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 			if (message == null) throw new ArgumentNullException(nameof(message));
 
-			var request = new SendMessageRequest { Content = message, Mentions = mentionedUserIds ?? new string[0], Nonce = nonce, IsTTS = isTTS ? true : false };
+			var request = new SendMessageRequest { Content = message, Mentions = mentionedUserIds ?? new long[0], Nonce = nonce, IsTTS = isTTS ? true : false };
 			return _rest.Post<SendMessageResponse>(Endpoints.ChannelMessages(channelId), request);
 		}
-		public Task<SendMessageResponse> SendFile(string channelId, string filePath)
+		public Task<SendMessageResponse> SendFile(long channelId, string filePath)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 			if (filePath == null) throw new ArgumentNullException(nameof(filePath));
 
 			return _rest.PostFile<SendMessageResponse>(Endpoints.ChannelMessages(channelId), filePath);
 		}
-		public Task DeleteMessage(string messageId, string channelId)
+		public Task DeleteMessage(long messageId, long channelId)
 		{
-			if (messageId == null) throw new ArgumentNullException(nameof(messageId));
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (messageId <= 0) throw new ArgumentOutOfRangeException(nameof(messageId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			return _rest.Delete(Endpoints.ChannelMessage(channelId, messageId));
 		}
-		public Task<EditMessageResponse> EditMessage(string messageId, string channelId, string message = null, IEnumerable<string> mentionedUserIds = null)
+		public Task<EditMessageResponse> EditMessage(long messageId, long channelId, string message = null, IEnumerable<long> mentionedUserIds = null)
 		{
-			if (messageId == null) throw new ArgumentNullException(nameof(messageId));
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (messageId <= 0) throw new ArgumentOutOfRangeException(nameof(messageId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			var request = new EditMessageRequest { Content = message, Mentions = mentionedUserIds };
 			return _rest.Patch<EditMessageResponse>(Endpoints.ChannelMessage(channelId, messageId), request);
 		}
-		public Task AckMessage(string messageId, string channelId)
+		public Task AckMessage(long messageId, long channelId)
 		{
-			if (messageId == null) throw new ArgumentNullException(nameof(messageId));
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (messageId <= 0) throw new ArgumentOutOfRangeException(nameof(messageId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			return _rest.Post(Endpoints.ChannelMessageAck(channelId, messageId));
 		}
-        public Task SendIsTyping(string channelId)
+        public Task SendIsTyping(long channelId)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 
 			return _rest.Post(Endpoints.ChannelTyping(channelId));
 		}
 
 		//Permissions
-		public Task SetChannelPermissions(string channelId, string userOrRoleId, string idType, uint allow = 0, uint deny = 0)
+		public Task SetChannelPermissions(long channelId, long userOrRoleId, string idType, uint allow = 0, uint deny = 0)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
-			if (userOrRoleId == null) throw new ArgumentNullException(nameof(userOrRoleId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
+			if (userOrRoleId <= 0) throw new ArgumentOutOfRangeException(nameof(userOrRoleId));
 			if (idType == null) throw new ArgumentNullException(nameof(idType));
 
 			var request = new SetChannelPermissionsRequest { Id = userOrRoleId, Type = idType, Allow = allow, Deny = deny };
 			return _rest.Put(Endpoints.ChannelPermission(channelId, userOrRoleId), request);
 		}
-		public Task DeleteChannelPermissions(string channelId, string userOrRoleId)
+		public Task DeleteChannelPermissions(long channelId, long userOrRoleId)
 		{
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
-			if (userOrRoleId == null) throw new ArgumentNullException(nameof(userOrRoleId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
+			if (userOrRoleId <= 0) throw new ArgumentOutOfRangeException(nameof(userOrRoleId));
 
 			return _rest.Delete(Endpoints.ChannelPermission(channelId, userOrRoleId), null);
 		}
 
 		//Roles
-		public Task<RoleInfo> CreateRole(string serverId)
+		public Task<RoleInfo> CreateRole(long serverId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 			
 			return _rest.Post<RoleInfo>(Endpoints.ServerRoles(serverId));
 		}
-		public Task DeleteRole(string serverId, string roleId)
+		public Task DeleteRole(long serverId, long roleId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (roleId == null) throw new ArgumentNullException(nameof(roleId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (roleId <= 0) throw new ArgumentOutOfRangeException(nameof(roleId));
 
 			return _rest.Delete(Endpoints.ServerRole(serverId, roleId));
 		}
-		public Task<RoleInfo> EditRole(string serverId, string roleId, string name = null, uint? permissions = null, uint? color = null, bool? hoist = null)
+		public Task<RoleInfo> EditRole(long serverId, long roleId, string name = null, uint? permissions = null, uint? color = null, bool? hoist = null)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
-			if (roleId == null) throw new ArgumentNullException(nameof(roleId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
+			if (roleId <= 0) throw new ArgumentOutOfRangeException(nameof(roleId));
 
 			var request = new EditRoleRequest { Name = name, Permissions = permissions, Hoist = hoist, Color = color };
 			return _rest.Patch<RoleInfo>(Endpoints.ServerRole(serverId, roleId), request);
 		}
-		public Task ReorderRoles(string serverId, IEnumerable<string> roleIds, int startPos = 0)
+		public Task ReorderRoles(long serverId, IEnumerable<long> roleIds, int startPos = 0)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 			if (roleIds == null) throw new ArgumentNullException(nameof(roleIds));
 			if (startPos < 0) throw new ArgumentOutOfRangeException(nameof(startPos), "startPos must be a positive integer.");
 
@@ -293,15 +293,15 @@ namespace Discord
 			var request = new CreateServerRequest { Name = name, Region = region };
 			return _rest.Post<CreateServerResponse>(Endpoints.Servers, request);
 		}
-		public Task LeaveServer(string serverId)
+		public Task LeaveServer(long serverId)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 
 			return _rest.Delete<DeleteServerResponse>(Endpoints.Server(serverId));
 		}
-		public Task<EditServerResponse> EditServer(string serverId, string name = null, string region = null, ImageType iconType = ImageType.Png, byte[] icon = null)
+		public Task<EditServerResponse> EditServer(long serverId, string name = null, string region = null, ImageType iconType = ImageType.Png, byte[] icon = null)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (serverId <= 0) throw new ArgumentOutOfRangeException(nameof(serverId));
 
 			var request = new EditServerRequest { Name = name, Region = region, Icon = Base64Picture(iconType, icon) };
 			return _rest.Patch<EditServerResponse>(Endpoints.Server(serverId), request);

src/Discord.Net/DiscordClient.Bans.cs

@@ -6,10 +6,10 @@ namespace Discord
 {
 	public class BanEventArgs : EventArgs
 	{
-		public string UserId { get; }
+		public long UserId { get; }
 		public Server Server { get; }
 
-		public BanEventArgs(string userId, Server server)
+		public BanEventArgs(long userId, Server server)
 		{
 			UserId = userId;
 			Server = server;
@@ -19,13 +19,13 @@ namespace Discord
 	public partial class DiscordClient
 	{
 		public event EventHandler<BanEventArgs> UserBanned;
-		private void RaiseUserBanned(string userId, Server server)
+		private void RaiseUserBanned(long userId, Server server)
 		{
 			if (UserBanned != null)
 				RaiseEvent(nameof(UserBanned), () => UserBanned(this, new BanEventArgs(userId, server)));
 		}
 		public event EventHandler<BanEventArgs> UserUnbanned;
-		private void RaiseUserUnbanned(string userId, Server server)
+		private void RaiseUserUnbanned(long userId, Server server)
 		{
 			if (UserUnbanned != null)
 				RaiseEvent(nameof(UserUnbanned), () => UserUnbanned(this, new BanEventArgs(userId, server)));
@@ -42,10 +42,10 @@ namespace Discord
 		}
 
 		/// <summary> Unbans a user from the provided server. </summary>
-		public async Task Unban(Server server, string userId)
+		public async Task Unban(Server server, long userId)
 		{
 			if (server == null) throw new ArgumentNullException(nameof(server));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 			CheckReady();
 
 			try { await _api.UnbanUser(server.Id, userId).ConfigureAwait(false); }

src/Discord.Net/DiscordClient.Channels.cs

@@ -7,15 +7,15 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-	internal sealed class Channels : AsyncCollection<Channel>
+	internal sealed class Channels : AsyncCollection<long, Channel>
 	{
 		public IEnumerable<Channel> PrivateChannels => _privateChannels.Select(x => x.Value);
-		private ConcurrentDictionary<string, Channel> _privateChannels;
+		private ConcurrentDictionary<long, Channel> _privateChannels;
 
 		public Channels(DiscordClient client, object writerLock)
 			: base(client, writerLock)
 		{
-			_privateChannels = new ConcurrentDictionary<string, Channel>();
+			_privateChannels = new ConcurrentDictionary<long, Channel>();
 			ItemCreated += (s, e) =>
 			{
 				if (e.Item.IsPrivate)
@@ -31,8 +31,8 @@ namespace Discord
 			};
 			Cleared += (s, e) => _privateChannels.Clear();
         }
-
-		public Channel GetOrAdd(string id, string serverId, string recipientId = null)
+		
+		public Channel GetOrAdd(long id, long? serverId, long? recipientId = null)
 			=> GetOrAdd(id, () => new Channel(_client, id, serverId, recipientId));
 	}
 
@@ -71,9 +71,9 @@ namespace Discord
 		private readonly Channels _channels;
 
 		/// <summary> Returns the channel with the specified id, or null if none was found. </summary>
-		public Channel GetChannel(string id)
+		public Channel GetChannel(long id)
 		{
-			if (id == null) throw new ArgumentNullException(nameof(id));
+			if (id <= 0) throw new ArgumentOutOfRangeException(nameof(id));
 			CheckReady();
 
 			return _channels[id];
@@ -93,7 +93,7 @@ namespace Discord
 			{
 				if (name[0] == '<' && name[1] == '#' && name[name.Length - 1] == '>') //Parse mention
 				{					
-					string id = name.Substring(2, name.Length - 3);
+					long id = IdConvert.ToLong(name.Substring(2, name.Length - 3));
 					var channel = _channels[id];
 					if (channel != null)
 						query = query.Concat(new Channel[] { channel });
@@ -135,10 +135,10 @@ namespace Discord
 				channel = user.GlobalUser.PrivateChannel;
 			if (channel == null)
 			{
-				var response = await _api.CreatePMChannel(_userId, user.Id).ConfigureAwait(false);
-				var recipient = _users.GetOrAdd(response.Recipient?.Id, null);
+				var response = await _api.CreatePMChannel(_userId.Value, user.Id).ConfigureAwait(false);
+				var recipient = _users.GetOrAdd(response.Recipient.Id, null);
 				recipient.Update(response.Recipient);
-				channel = _channels.GetOrAdd(response.Id, response.GuildId, response.Recipient?.Id);
+				channel = _channels.GetOrAdd(response.Id, response.GuildId, response.Recipient.Id);
 				channel.Update(response);
 			}
 			return channel;

src/Discord.Net/DiscordClient.Invites.cs

@@ -23,7 +23,7 @@ namespace Discord
 				inviteIdOrXkcd = inviteIdOrXkcd.Substring(index + 1);
 
 			var response = await _api.GetInvite(inviteIdOrXkcd).ConfigureAwait(false);
-			var invite = new Invite(this, response.Code, response.XkcdPass, response.Guild.Id, response.Inviter?.Id, response.Channel?.Id);
+			var invite = new Invite(this, response.Code, response.XkcdPass);
 			invite.Cache(); //Builds references
 			invite.Update(response);
             return invite;
@@ -38,7 +38,7 @@ namespace Discord
 			var response = await _api.GetInvites(server.Id).ConfigureAwait(false);
 			return response.Select(x =>
 			{
-				var invite = new Invite(this, x.Code, x.XkcdPass, x.Guild.Id, x.Inviter?.Id, x.Channel?.Id);
+				var invite = new Invite(this, x.Code, x.XkcdPass);
 				invite.Cache(); //Builds references
 				invite.Update(x);
 				return invite;
@@ -71,7 +71,7 @@ namespace Discord
 
 			var response = await _api.CreateInvite(channel.Id, maxAge: maxAge, maxUses: maxUses, 
 				tempMembership: tempMembership, hasXkcd: hasXkcd).ConfigureAwait(false);
-			var invite = new Invite(this, response.Code, response.XkcdPass, response.Guild.Id, response.Inviter?.Id, response.Channel?.Id);
+			var invite = new Invite(this, response.Code, response.XkcdPass);
 			invite.Cache(); //Builds references
 			return invite;
 		}

src/Discord.Net/DiscordClient.Messages.cs

@@ -1,5 +1,4 @@
 using Discord.API;
-using Discord.Net;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -8,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-	internal sealed class Messages : AsyncCollection<Message>
+	internal sealed class Messages : AsyncCollection<long, Message>
 	{
 		private bool _isEnabled;
 
@@ -17,8 +16,8 @@ namespace Discord
 		{
 			_isEnabled = isEnabled;
         }
-
-		public Message GetOrAdd(string id, string channelId, string userId)
+		
+		public Message GetOrAdd(long id, long channelId, long userId)
 		{
 			if (_isEnabled)
 				return GetOrAdd(id, () => new Message(_client, id, channelId, userId));
@@ -80,9 +79,9 @@ namespace Discord
 		private readonly Messages _messages;
 
 		/// <summary> Returns the message with the specified id, or null if none was found. </summary>
-		public Message GetMessage(string id)
+		public Message GetMessage(long id)
 		{
-			if (id == null) throw new ArgumentNullException(nameof(id));
+			if (id <= 0) throw new ArgumentOutOfRangeException(nameof(id));
 			CheckReady();
 
 			return _messages[id];
@@ -124,17 +123,16 @@ namespace Discord
 			if (Config.UseMessageQueue)
 			{
 				var nonce = GenerateNonce();
-				msg = _messages.GetOrAdd("nonce_" + nonce, channel.Id, _userId);
+				msg = _messages.GetOrAdd(nonce, channel.Id, _userId.Value);
                 var currentUser = msg.User;
 				msg.Update(new MessageInfo
 				{
 					Content = text,
                     Timestamp = DateTime.UtcNow,
-					Author = new UserReference { Avatar = currentUser.AvatarId, Discriminator = currentUser.Discriminator, Id = _userId, Username = currentUser.Name },
+					Author = new UserReference { Avatar = currentUser.AvatarId, Discriminator = currentUser.Discriminator, Id = _userId.Value, Username = currentUser.Name },
 					ChannelId = channel.Id,
 					IsTextToSpeech = isTextToSpeech
 				});
-				msg.Nonce = nonce;
 				msg.IsQueued = true;
 
 				if (text.Length > MaxMessageSize)
@@ -217,7 +215,7 @@ namespace Discord
 
 
 		/// <summary> Downloads last count messages from the server, returning all messages before or after relativeMessageId, if it's provided. </summary>
-		public async Task<Message[]> DownloadMessages(Channel channel, int count, string relativeMessageId = null, RelativeDirection relativeDir = RelativeDirection.Before, bool useCache = true)
+		public async Task<Message[]> DownloadMessages(Channel channel, int count, long? relativeMessageId = null, RelativeDirection relativeDir = RelativeDirection.Before, bool useCache = true)
 		{
 			if (channel == null) throw new ArgumentNullException(nameof(channel));
 			if (count < 0) throw new ArgumentNullException(nameof(count));
@@ -274,7 +272,7 @@ namespace Discord
 						SendMessageResponse response = null;
 						try
 						{
-							response = await _api.SendMessage(msg.Channel.Id, msg.RawText, msg.MentionedUsers.Select(x => x.Id), msg.Nonce, msg.IsTTS).ConfigureAwait(false);
+							response = await _api.SendMessage(msg.Channel.Id, msg.RawText, msg.MentionedUsers.Select(x => x.Id), IdConvert.ToString(msg.Id), msg.IsTTS).ConfigureAwait(false);
 						}
 						catch (WebException) { break; }
 						catch (HttpException) { hasFailed = true; }
@@ -293,10 +291,10 @@ namespace Discord
 				}
 			});
 		}
-		private string GenerateNonce()
+		private long GenerateNonce()
 		{
 			lock (_rand)
-				return _rand.Next().ToString();
+				return -_rand.Next(1, int.MaxValue - 1);
 		}
 	}
 }

src/Discord.Net/DiscordClient.Permissions.cs

@@ -36,7 +36,7 @@ namespace Discord
 			if (user == null) throw new ArgumentNullException(nameof(user));
 			CheckReady();
 
-			return SetChannelPermissions(channel, user?.Id, PermissionTarget.User, allow, deny);
+			return SetChannelPermissions(channel, user.Id, PermissionTarget.User, allow, deny);
 		}
 		public Task SetChannelPermissions(Channel channel, User user, DualChannelPermissions permissions = null)
 		{
@@ -44,7 +44,7 @@ namespace Discord
 			if (user == null) throw new ArgumentNullException(nameof(user));
 			CheckReady();
 
-			return SetChannelPermissions(channel, user?.Id, PermissionTarget.User, permissions?.Allow, permissions?.Deny);
+			return SetChannelPermissions(channel, user.Id, PermissionTarget.User, permissions?.Allow, permissions?.Deny);
 		}
 		public Task SetChannelPermissions(Channel channel, Role role, ChannelPermissions allow = null, ChannelPermissions deny = null)
 		{
@@ -52,7 +52,7 @@ namespace Discord
 			if (role == null) throw new ArgumentNullException(nameof(role));
 			CheckReady();
 
-			return SetChannelPermissions(channel, role?.Id, PermissionTarget.Role, allow, deny);
+			return SetChannelPermissions(channel, role.Id, PermissionTarget.Role, allow, deny);
 		}
 		public Task SetChannelPermissions(Channel channel, Role role, DualChannelPermissions permissions = null)
 		{
@@ -60,9 +60,9 @@ namespace Discord
 			if (role == null) throw new ArgumentNullException(nameof(role));
 			CheckReady();
 
-			return SetChannelPermissions(channel, role?.Id, PermissionTarget.Role, permissions?.Allow, permissions?.Deny);
+			return SetChannelPermissions(channel, role.Id, PermissionTarget.Role, permissions?.Allow, permissions?.Deny);
 		}
-		private Task SetChannelPermissions(Channel channel, string targetId, PermissionTarget targetType, ChannelPermissions allow = null, ChannelPermissions deny = null)
+		private Task SetChannelPermissions(Channel channel, long targetId, PermissionTarget targetType, ChannelPermissions allow = null, ChannelPermissions deny = null)
 			=> _api.SetChannelPermissions(channel.Id, targetId, targetType.Value, allow?.RawValue ?? 0, deny?.RawValue ?? 0);
 
 		public Task RemoveChannelPermissions(Channel channel, User user)
@@ -71,7 +71,7 @@ namespace Discord
 			if (user == null) throw new ArgumentNullException(nameof(user));
 			CheckReady();
 
-			return RemoveChannelPermissions(channel, user?.Id, PermissionTarget.User);
+			return RemoveChannelPermissions(channel, user.Id, PermissionTarget.User);
 		}
 		public Task RemoveChannelPermissions(Channel channel, Role role)
 		{
@@ -79,9 +79,9 @@ namespace Discord
 			if (role == null) throw new ArgumentNullException(nameof(role));
 			CheckReady();
 
-			return RemoveChannelPermissions(channel, role?.Id, PermissionTarget.Role);
+			return RemoveChannelPermissions(channel, role.Id, PermissionTarget.Role);
 		}
-		private async Task RemoveChannelPermissions(Channel channel, string userOrRoleId, PermissionTarget targetType)
+		private async Task RemoveChannelPermissions(Channel channel, long userOrRoleId, PermissionTarget targetType)
 		{
 			try
 			{

src/Discord.Net/DiscordClient.Roles.cs

@@ -6,12 +6,12 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-	internal sealed class Roles : AsyncCollection<Role>
+	internal sealed class Roles : AsyncCollection<long, Role>
 	{
 		public Roles(DiscordClient client, object writerLock)
 			: base(client, writerLock) { }
 		
-		public Role GetOrAdd(string id, string serverId)
+		public Role GetOrAdd(long id, long serverId)
 			=> GetOrAdd(id, () => new Role(_client, id, serverId));
 	}
 
@@ -48,9 +48,9 @@ namespace Discord
 		private readonly Roles _roles;
 
 		/// <summary> Returns the role with the specified id, or null if none was found. </summary>
-		public Role GetRole(string id)
+		public Role GetRole(long id)
 		{
-			if (id == null) throw new ArgumentNullException(nameof(id));
+			if (id <= 0) throw new ArgumentOutOfRangeException(nameof(id));
 			CheckReady();
 
 			return _roles[id];

src/Discord.Net/DiscordClient.Servers.cs

@@ -6,19 +6,18 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-	internal sealed class Servers : AsyncCollection<Server>
+	internal sealed class Servers : AsyncCollection<long, Server>
 	{
 		public Servers(DiscordClient client, object writerLock)
 			: base(client, writerLock) { }
-
-		public Server GetOrAdd(string id)
+		
+		public Server GetOrAdd(long id)
 			=> GetOrAdd(id, () => new Server(_client, id));
 	}
 
 	public class ServerEventArgs : EventArgs
 	{
 		public Server Server { get; }
-		public string ServerId => Server.Id;
 
 		public ServerEventArgs(Server server) { Server = server; }
 	}
@@ -62,9 +61,9 @@ namespace Discord
 		private readonly Servers _servers;
 
 		/// <summary> Returns the server with the specified id, or null if none was found. </summary>
-		public Server GetServer(string id)
+		public Server GetServer(long id)
 		{
-			if (id == null) throw new ArgumentNullException(nameof(id));
+			if (id <= 0) throw new ArgumentOutOfRangeException(nameof(id));
 			CheckReady();
 
 			return _servers[id];

src/Discord.Net/DiscordClient.Users.cs

@@ -5,27 +5,25 @@ using System.Threading.Tasks;
 
 namespace Discord
 {
-	internal sealed class GlobalUsers : AsyncCollection<GlobalUser>
+	internal sealed class GlobalUsers : AsyncCollection<long, GlobalUser>
 	{
 		public GlobalUsers(DiscordClient client, object writerLock)
 			: base(client, writerLock) { }
 
-		public GlobalUser GetOrAdd(string id) => GetOrAdd(id, () => new GlobalUser(_client, id));
+		public GlobalUser GetOrAdd(long id) => GetOrAdd(id, () => new GlobalUser(_client, id));
 	}
-	internal sealed class Users : AsyncCollection<User>
+	internal sealed class Users : AsyncCollection<User.CompositeKey, User>
 	{
 		public Users(DiscordClient client, object writerLock)
 			: base(client, writerLock)
 		{ }
-		private string GetKey(string userId, string serverId)
-			=> User.GetId(userId, serverId);
-
-		public User this[string userId, string serverId]
-			=> this[GetKey(userId, serverId)];
-		public User GetOrAdd(string userId, string serverId)
-			=> GetOrAdd(GetKey(userId, serverId), () => new User(_client, userId, serverId));
-		public User TryRemove(string userId, string serverId)
-			=> TryRemove(GetKey(userId, serverId));
+
+		public User this[long userId, long? serverId]
+			=> base[new User.CompositeKey(userId, serverId)];
+		public User GetOrAdd(long userId, long? serverId)
+			=> GetOrAdd(new User.CompositeKey(userId, serverId), () => new User(_client, userId, serverId));
+		public User TryRemove(long userId, long? serverId)
+			=> TryRemove(new User.CompositeKey(userId, serverId));
 	}
 
 	public class UserEventArgs : EventArgs
@@ -38,7 +36,6 @@ namespace Discord
 	public class UserChannelEventArgs : UserEventArgs
 	{
 		public Channel Channel { get; }
-		public string ChannelId => Channel.Id;
 
 		public UserChannelEventArgs(User user, Channel channel)
 			: base(user)
@@ -123,30 +120,29 @@ namespace Discord
 		private readonly Users _users;
 
 		/// <summary> Returns the user with the specified id, along with their server-specific data, or null if none was found. </summary>
-		public User GetUser(Server server, string userId)
+		public User GetUser(Server server, long userId)
 		{
 			if (server == null) throw new ArgumentNullException(nameof(server));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 			CheckReady();
 
 			return _users[userId, server.Id];
 		}
 		/// <summary> Returns the user with the specified name and discriminator, along withtheir server-specific data, or null if they couldn't be found. </summary>
 		/// <remarks> Name formats supported: Name and @Name. Search is case-insensitive. </remarks>
-		public User GetUser(Server server, string username, string discriminator)
+		public User GetUser(Server server, string username, short discriminator)
 		{
 			if (server == null) throw new ArgumentNullException(nameof(server));
 			if (username == null) throw new ArgumentNullException(nameof(username));
-			if (discriminator == null) throw new ArgumentNullException(nameof(discriminator));
+			if (discriminator <= 0) throw new ArgumentOutOfRangeException(nameof(discriminator));
 			CheckReady();
 
-			User user = FindUsers(server, username, discriminator, true).FirstOrDefault();
-			return _users[user?.Id, server.Id];
+			return FindUsers(server, username, discriminator, true).FirstOrDefault();
 		}
 
 		/// <summary> Returns all users with the specified server and name, along with their server-specific data. </summary>
 		/// <remarks> Name formats supported: Name and @Name. Search is case-insensitive.</remarks>
-		public IEnumerable<User> FindUsers(Server server, string name, string discriminator = null, bool exactMatch = false)
+		public IEnumerable<User> FindUsers(Server server, string name, short? discriminator = null, bool exactMatch = false)
 		{
 			if (server == null) throw new ArgumentNullException(nameof(server));
 			if (name == null) throw new ArgumentNullException(nameof(name));
@@ -156,16 +152,16 @@ namespace Discord
 		}
 		/// <summary> Returns all users with the specified channel and name, along with their server-specific data. </summary>
 		/// <remarks> Name formats supported: Name and @Name. Search is case-insensitive.</remarks>
-		public IEnumerable<User> FindUsers(Channel channel, string name, string discriminator = null, bool exactMatch = false)
+		public IEnumerable<User> FindUsers(Channel channel, string name, short? discriminator = null, bool exactMatch = false)
 		{
 			if (channel == null) throw new ArgumentNullException(nameof(channel));
 			if (name == null) throw new ArgumentNullException(nameof(name));
 			CheckReady();
 
-			return FindUsers(channel.Members, channel.IsPrivate ? null : channel.Server.Id, name, discriminator, exactMatch);
+			return FindUsers(channel.Members, channel.IsPrivate ? (long?)null : channel.Server.Id, name, discriminator, exactMatch);
         }
 
-		private IEnumerable<User> FindUsers(IEnumerable<User> users, string serverId, string name, string discriminator = null, bool exactMatch = false)
+		private IEnumerable<User> FindUsers(IEnumerable<User> users, long? serverId, string name, short? discriminator = null, bool exactMatch = false)
 		{
 			var query = users.Where(x => string.Equals(x.Name, name, StringComparison.OrdinalIgnoreCase));
 
@@ -173,7 +169,7 @@ namespace Discord
 			{
 				if (name[0] == '<' && name[1] == '@' && name[name.Length - 1] == '>') //Parse mention
 				{
-					string id = name.Substring(2, name.Length - 3);
+					long id = IdConvert.ToLong(name.Substring(2, name.Length - 3));
 					var channel = _users[id, serverId];
 					if (channel != null)
 						query = query.Concat(new User[] { channel });
@@ -186,57 +182,60 @@ namespace Discord
 			}
 
 			if (discriminator != null)
-				query = query.Where(x => x.Discriminator == discriminator);
+				query = query.Where(x => x.Discriminator == discriminator.Value);
 			return query;
 		}
 
 		public Task EditUser(User user, bool? mute = null, bool? deaf = null, IEnumerable<Role> roles = null)
 		{
 			if (user == null) throw new ArgumentNullException(nameof(user));
+			if (user.IsPrivate) throw new InvalidOperationException("Unable to edit users in a private channel");
 			CheckReady();
 
-			var serverId = user.Server?.Id;
+			var serverId = user.Server.Id;
             return _api.EditUser(serverId, user.Id, 
 				mute: mute, deaf: deaf, 
-				roles: roles.Select(x => x.Id).Where(x  => x != serverId));
+				roleIds: roles.Select(x => x.Id).Where(x  => x != serverId));
 		}
 
 		public Task KickUser(User user)
 		{
 			if (user == null) throw new ArgumentNullException(nameof(user));
+			if (user.IsPrivate) throw new InvalidOperationException("Unable to kick users from a private channel");
 
-			return _api.KickUser(user.Server?.Id, user.Id);
+			return _api.KickUser(user.Server.Id, user.Id);
 		}
 		public Task BanUser(User user)
 		{
 			if (user == null) throw new ArgumentNullException(nameof(user));
+			if (user.IsPrivate) throw new InvalidOperationException("Unable to ban users from a private channel");
 
-			return _api.BanUser(user.Server?.Id, user.Id);
+			return _api.BanUser(user.Server.Id, user.Id);
 		}
-		public Task UnbanUser(Server server, string userId)
+		public Task UnbanUser(Server server, long userId)
 		{
 			if (server == null) throw new ArgumentNullException(nameof(server));
-			if (userId == null) throw new ArgumentNullException(nameof(userId));
+			if (userId <= 0) throw new ArgumentOutOfRangeException(nameof(userId));
 
 			return _api.UnbanUser(server.Id, userId);
 		}
 
-		public async Task<int> PruneUsers(string serverId, int days, bool simulate = false)
+		public async Task<int> PruneUsers(Server server, int days, bool simulate = false)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (server == null) throw new ArgumentNullException(nameof(server));
 			if (days <= 0) throw new ArgumentOutOfRangeException(nameof(days));
 			CheckReady();
 
-			var response = await _api.PruneUsers(serverId, days, simulate);
+			var response = await _api.PruneUsers(server.Id, days, simulate);
 			return response.Pruned ?? 0;
 		}
 
 		/// <summary>When Config.UseLargeThreshold is enabled, running this command will request the Discord server to provide you with all offline users for a particular server.</summary>
-		public void RequestOfflineUsers(string serverId)
+		public void RequestOfflineUsers(Server server)
 		{
-			if (serverId == null) throw new ArgumentNullException(nameof(serverId));
+			if (server == null) throw new ArgumentNullException(nameof(server));
 
-			_dataSocket.SendGetUsers(serverId);
+			_dataSocket.SendGetUsers(server.Id);
 		}
 
 		public Task EditProfile(string currentPassword = "",

src/Discord.Net/DiscordClient.Voice.cs

@@ -8,7 +8,7 @@ namespace Discord
 	{
 		public IDiscordVoiceClient GetVoiceClient(Server server)
 		{
-			if (server.Id == null) throw new ArgumentNullException(nameof(server.Id));
+			if (server.Id <= 0) throw new ArgumentOutOfRangeException(nameof(server.Id));
 
 			if (!Config.EnableVoiceMultiserver)
 			{
@@ -16,7 +16,7 @@ namespace Discord
 					return this;
 				else
 					return null;
-			}
+            }
 
 			DiscordWSClient client;
 			if (_voiceClients.TryGetValue(server.Id, out client))

src/Discord.Net/DiscordClient.cs

@@ -16,7 +16,7 @@ namespace Discord
 		private readonly Random _rand;
 		private readonly JsonSerializer _serializer;
 		private readonly ConcurrentQueue<Message> _pendingMessages;
-		private readonly ConcurrentDictionary<string, DiscordWSClient> _voiceClients;
+		private readonly ConcurrentDictionary<long, DiscordWSClient> _voiceClients;
 		private readonly Dictionary<Type, IService> _services;
 		private bool _sentInitialLog;
 		private uint _nextVoiceClientId;
@@ -38,7 +38,7 @@ namespace Discord
 			if (Config.UseMessageQueue)
 				_pendingMessages = new ConcurrentQueue<Message>();
 			if (Config.EnableVoiceMultiserver)
-				_voiceClients = new ConcurrentDictionary<string, DiscordWSClient>();
+				_voiceClients = new ConcurrentDictionary<long, DiscordWSClient>();
 
 			object cacheLock = new object();
 			_channels = new Channels(this, cacheLock);
@@ -139,18 +139,18 @@ namespace Discord
 			}
 			if (_config.LogLevel >= LogMessageSeverity.Debug)
 			{
-				_channels.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Channel {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
-				_channels.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Channel {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
+                _channels.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Channel {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
+				_channels.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Channel {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
 				_channels.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Channels");
-				_users.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created User {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
-				_users.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed User {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
+				_users.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created User {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
+				_users.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed User {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
 				_users.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Users");
-				_messages.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Message {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Channel.Id}/{e.Item.Id}");
-				_messages.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Message {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Channel.Id}/{e.Item.Id}");
-				_messages.ItemRemapped += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Remapped Message {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Channel.Id}/[{e.OldId} -> {e.NewId}]");
+				_messages.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Message {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Channel.Id}/{e.Item.Id}");
+				_messages.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Message {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Channel.Id}/{e.Item.Id}");
+				_messages.ItemRemapped += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Remapped Message {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Channel.Id}/[{e.OldId} -> {e.NewId}]");
 				_messages.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Messages");
-				_roles.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Role {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
-				_roles.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Role {e.Item.Server?.Id ?? "[Private]"}/{e.Item.Id}");
+				_roles.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Role {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
+				_roles.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Role {IdConvert.ToString(e.Item.Server?.Id) ?? "[Private]"}/{e.Item.Id}");
 				_roles.Cleared += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Cleared Roles");
 				_servers.ItemCreated += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Created Server {e.Item.Id}");
 				_servers.ItemDestroyed += (s, e) => RaiseOnLog(LogMessageSeverity.Debug, LogMessageSource.Cache, $"Destroyed Server {e.Item.Id}");
@@ -498,8 +498,9 @@ namespace Discord
 							var server = _servers[data.GuildId];
 							if (server != null)
 							{
-								server.AddBan(data.User?.Id);
-								RaiseUserBanned(data.User?.Id, server);
+								var id = data.User?.Id ?? data.UserId;
+                                server.AddBan(id);
+								RaiseUserBanned(id, server);
 							}
 						}
 						break;
@@ -507,8 +508,12 @@ namespace Discord
 						{
 							var data = e.Payload.ToObject<BanRemoveEvent>(_serializer);
 							var server = _servers[data.GuildId];
-							if (server != null && server.RemoveBan(data.User?.Id))
-								RaiseUserUnbanned(data.User?.Id, server);
+							if (server != null)
+							{
+								var id = data.User?.Id ?? data.UserId;
+								if (server.RemoveBan(id))
+									RaiseUserUnbanned(id, server);
+							}
 						}
 						break;
 

src/Discord.Net/DiscordWSClient.Events.cs

@@ -34,9 +34,9 @@ namespace Discord
 	}
 	public class VoiceDisconnectedEventArgs : DisconnectedEventArgs
 	{
-		public readonly string ServerId;
+		public readonly long ServerId;
 
-		internal VoiceDisconnectedEventArgs(string serverId, DisconnectedEventArgs e)
+		internal VoiceDisconnectedEventArgs(long serverId, DisconnectedEventArgs e)
 			: base(e.WasUnexpected, e.Error)
 		{
 			ServerId = serverId;
@@ -60,13 +60,13 @@ namespace Discord
 
 	public sealed class VoicePacketEventArgs
 	{
-		public string UserId { get; }
-		public string ChannelId { get; }
+		public long UserId { get; }
+		public long ChannelId { get; }
 		public byte[] Buffer { get; }
 		public int Offset { get; }
 		public int Count { get; }
 
-		internal VoicePacketEventArgs(string userId, string channelId, byte[] buffer, int offset, int count)
+		internal VoicePacketEventArgs(long userId, long channelId, byte[] buffer, int offset, int count)
 		{
 			UserId = userId;
 			Buffer = buffer;
@@ -103,7 +103,7 @@ namespace Discord
 				RaiseEvent(nameof(VoiceConnected), () => VoiceConnected(this, EventArgs.Empty));
 		}
 		public event EventHandler<VoiceDisconnectedEventArgs> VoiceDisconnected;
-		private void RaiseVoiceDisconnected(string serverId, DisconnectedEventArgs e)
+		private void RaiseVoiceDisconnected(long serverId, DisconnectedEventArgs e)
 		{
 			if (VoiceDisconnected != null)
 				RaiseEvent(nameof(VoiceDisconnected), () => VoiceDisconnected(this, new VoiceDisconnectedEventArgs(serverId, e)));

src/Discord.Net/DiscordWSClient.Voice.cs

@@ -8,15 +8,15 @@ namespace Discord
 	{
 		IDiscordVoiceBuffer IDiscordVoiceClient.OutputBuffer => _voiceSocket.OutputBuffer;
 
-		async Task IDiscordVoiceClient.JoinChannel(string channelId)
+		async Task IDiscordVoiceClient.JoinChannel(long channelId)
 		{
 			CheckReady(checkVoice: true);
-			if (channelId == null) throw new ArgumentNullException(nameof(channelId));
+			if (channelId <= 0) throw new ArgumentOutOfRangeException(nameof(channelId));
 			
 			await _voiceSocket.Disconnect().ConfigureAwait(false);
 			
-			await _voiceSocket.SetChannel(_voiceServerId, channelId).ConfigureAwait(false);
-			_dataSocket.SendJoinVoice(_voiceServerId, channelId);
+			await _voiceSocket.SetChannel(_voiceServerId.Value, channelId).ConfigureAwait(false);
+			_dataSocket.SendJoinVoice(_voiceServerId.Value, channelId);
 			await _voiceSocket.WaitForConnection(_config.ConnectionTimeout).ConfigureAwait(false);
 		}
 

src/Discord.Net/DiscordWSClient.cs

@@ -27,11 +27,11 @@ namespace Discord
 		internal readonly VoiceWebSocket _voiceSocket;
 		protected ExceptionDispatchInfo _disconnectReason;
 		protected string _gateway, _token;
-		protected string _userId, _voiceServerId;
+		protected long? _userId, _voiceServerId;
 		private Task _runTask;
 		private bool _wasDisconnectUnexpected;
 
-		public string CurrentUserId => _userId;
+		public long CurrentUserId => _userId.Value;
 
 		/// <summary> Returns the configuration object used to make this client. Note that this object cannot be edited directly - to change the configuration of this client, use the DiscordClient(DiscordClientConfig config) constructor. </summary>
 		public DiscordWSClientConfig Config => _config;		
@@ -59,7 +59,7 @@ namespace Discord
 			if (_config.EnableVoice)
 				_voiceSocket = CreateVoiceSocket();
 		}
-		internal DiscordWSClient(DiscordWSClientConfig config = null, string voiceServerId = null)
+		internal DiscordWSClient(DiscordWSClientConfig config = null, long? voiceServerId = null)
 			: this(config)
 		{
 			_voiceServerId = voiceServerId;
@@ -100,7 +100,7 @@ namespace Discord
 			socket.Connected += (s, e) => RaiseVoiceConnected();
 			socket.Disconnected += async (s, e) =>
 			{
-				RaiseVoiceDisconnected(socket.CurrentServerId, e);				
+				RaiseVoiceDisconnected(socket.CurrentServerId.Value, e);				
 				if (e.WasUnexpected)
 					await socket.Reconnect().ConfigureAwait(false);
 			};
@@ -241,9 +241,9 @@ namespace Discord
 		{
 			if (_config.EnableVoice)
 			{
-				string voiceServerId = _voiceSocket.CurrentServerId;
+				var voiceServerId = _voiceSocket.CurrentServerId;
                 if (voiceServerId != null)
-					_dataSocket.SendLeaveVoice(voiceServerId);
+					_dataSocket.SendLeaveVoice(voiceServerId.Value);
 				await _voiceSocket.Disconnect().ConfigureAwait(false);
 			}
 			await _dataSocket.Disconnect().ConfigureAwait(false);
@@ -303,17 +303,17 @@ namespace Discord
 				switch (e.Type)
 				{
 					case "READY":
-						_userId = e.Payload["user"].Value<string>("id");
+						_userId = IdConvert.ToLong(e.Payload["user"].Value<string>("id"));
 						break;
 					case "VOICE_SERVER_UPDATE":
 						{
-							string guildId = e.Payload.Value<string>("guild_id");
+							long guildId = IdConvert.ToLong(e.Payload.Value<string>("guild_id"));
 
 							if (_config.EnableVoice && guildId == _voiceSocket.CurrentServerId)
 							{
 								string token = e.Payload.Value<string>("token");
 								_voiceSocket.Host = "wss://" + e.Payload.Value<string>("endpoint").Split(':')[0];
-								await _voiceSocket.Login(_userId, _dataSocket.SessionId, token, _cancelToken).ConfigureAwait(false);
+								await _voiceSocket.Login(_userId.Value, _dataSocket.SessionId, token, _cancelToken).ConfigureAwait(false);
 							}
 						}
 						break;

src/Discord.Net/Helpers/AsyncCollection.cs

@@ -6,7 +6,8 @@ using System.Linq;
 
 namespace Discord
 {
-	internal abstract class AsyncCollection<TValue> : IEnumerable<TValue>
+	internal abstract class AsyncCollection<TKey, TValue> : IEnumerable<TValue>
+		where TKey : struct, IEquatable<TKey>
 		where TValue : CachedObject
 	{
 		private readonly object _writerLock;
@@ -19,9 +20,9 @@ namespace Discord
 		public class CollectionItemRemappedEventArgs : EventArgs
 		{
 			public TValue Item { get; }
-			public string OldId { get; }
-			public string NewId { get; }
-			public CollectionItemRemappedEventArgs(TValue item, string oldId, string newId) { Item = item; OldId = oldId; NewId = newId; }
+			public TKey OldId { get; }
+			public TKey NewId { get; }
+			public CollectionItemRemappedEventArgs(TValue item, TKey oldId, TKey newId) { Item = item; OldId = oldId; NewId = newId; }
 		}
 
 		public EventHandler<CollectionItemEventArgs> ItemCreated;
@@ -37,7 +38,7 @@ namespace Discord
 				ItemDestroyed(this, new CollectionItemEventArgs(item));
 		}
 		public EventHandler<CollectionItemRemappedEventArgs> ItemRemapped;
-		private void RaiseItemRemapped(TValue item, string oldId, string newId)
+		private void RaiseItemRemapped(TValue item, TKey oldId, TKey newId)
 		{
 			if (ItemRemapped != null)
 				ItemRemapped(this, new CollectionItemRemappedEventArgs(item, oldId, newId));
@@ -51,20 +52,22 @@ namespace Discord
 		}
 
 		protected readonly DiscordClient _client;
-		protected readonly ConcurrentDictionary<string, TValue> _dictionary;
+		protected readonly ConcurrentDictionary<TKey, TValue> _dictionary;
 
 		protected AsyncCollection(DiscordClient client, object writerLock)
 		{
 			_client = client;
 			_writerLock = writerLock;
-			_dictionary = new ConcurrentDictionary<string, TValue>();
+			_dictionary = new ConcurrentDictionary<TKey, TValue>();
         }
 
-		public TValue this[string key]
+		public TValue this[TKey? key]
+			=> key == null ? null : this[key.Value];
+        public TValue this[TKey key]
 		{
 			get
 			{
-				if (key == null)
+				if (key.Equals(default(TKey)))
 					return null;
 
 				TValue result;
@@ -73,7 +76,7 @@ namespace Discord
 				return result;
 			}
 		}
-		protected TValue GetOrAdd(string key, Func<TValue> createFunc)
+		protected TValue GetOrAdd(TKey key, Func<TValue> createFunc)
 		{
 			TValue result;
 			if (_dictionary.TryGetValue(key, out result))
@@ -91,7 +94,7 @@ namespace Discord
 			}
 			return result;
 		}
-		public TValue TryRemove(string key)
+		public TValue TryRemove(TKey key)
 		{
 			if (_dictionary.ContainsKey(key))
 			{
@@ -107,7 +110,7 @@ namespace Discord
 			}
 			return null;
 		}
-		public TValue Remap(string oldKey, string newKey)
+		public TValue Remap(TKey oldKey, TKey newKey)
 		{
 			if (_dictionary.ContainsKey(oldKey))
 			{

src/Discord.Net/Helpers/CachedObject.cs

@@ -1,23 +1,35 @@
-namespace Discord
+using System.Globalization;
+
+namespace Discord
 {
-    public abstract class CachedObject
+	public abstract class CachedObject<TKey> : CachedObject
+	{
+		private TKey _id;
+
+		internal CachedObject(DiscordClient client, TKey id)
+			: base(client)
+		{
+			_id = id;
+		}
+
+		/// <summary> Returns the unique identifier for this object. </summary>
+		public TKey Id { get { return _id; } internal set { _id = value; } }
+
+		public override string ToString() => $"{this.GetType().Name} {Id}";
+	}
+
+	public abstract class CachedObject
 	{
 		protected readonly DiscordClient _client;
 		private bool _isCached;
 
 		internal bool IsCached => _isCached;
 
-		internal CachedObject(DiscordClient client, string id)
+        internal CachedObject(DiscordClient client)
 		{
 			_client = client;
-			Id = id;
 		}
 
-		/// <summary> Returns the unique identifier for this object. </summary>
-		public string Id { get; internal set; }
-
-		public override string ToString() => $"{this.GetType().Name} {Id}";
-
 		internal void Cache()
 		{
 			LoadReferences();

src/Discord.Net/Helpers/IdConvert.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Globalization;
+
+namespace Discord
+{
+    internal static class IdConvert
+	{
+		internal static readonly IFormatProvider _format = CultureInfo.InvariantCulture;
+
+		public static short ToShort(string value)
+			=> short.Parse(value, NumberStyles.None, _format);
+		public static short? ToNullableShort(string value)
+			=> value == null ? (short?)null : short.Parse(value, NumberStyles.None, _format);
+		public static long ToLong(string value)
+			=> long.Parse(value, NumberStyles.None, _format);
+		public static long? ToNullableLong(string value)
+			=> value == null ? (long?)null : long.Parse(value, NumberStyles.None, _format);
+
+		public static string ToString(short value)
+			=> value.ToString(_format);
+		public static string ToString(short? value)
+			=> value?.ToString(_format);
+		public static string ToString(long value)
+			=> value.ToString(_format);
+		public static string ToString(long? value)
+			=> value?.ToString(_format);
+	}
+}

src/Discord.Net/Helpers/Mention.cs

@@ -24,7 +24,7 @@ namespace Discord
 		{
 			return _userRegex.Replace(text, new MatchEvaluator(e =>
 			{
-				string id = e.Value.Substring(2, e.Value.Length - 3);
+				long id = IdConvert.ToLong(e.Value.Substring(2, e.Value.Length - 3));
 				var user = client.Users[id, server?.Id];
 				if (user != null)
 				{
@@ -40,7 +40,7 @@ namespace Discord
 		{
 			return _channelRegex.Replace(text, new MatchEvaluator(e =>
 			{
-				string id = e.Value.Substring(2, e.Value.Length - 3);
+				long id = IdConvert.ToLong(e.Value.Substring(2, e.Value.Length - 3));
 				var channel = client.Channels[id];
 				if (channel != null && channel.Server.Id == server.Id)
 				{
@@ -52,7 +52,7 @@ namespace Discord
 					return '#' + e.Value;
 			}));
 		}
-		internal static string CleanRoleMentions(DiscordClient client, User user, Channel channel, string text, List<Role> roles = null)
+		/*internal static string CleanRoleMentions(DiscordClient client, User user, Channel channel, string text, List<Role> roles = null)
 		{
 			return _roleRegex.Replace(text, new MatchEvaluator(e =>
 			{
@@ -60,6 +60,6 @@ namespace Discord
 					roles.Add(channel.Server.EveryoneRole);
 				return e.Value;
 			}));
-		}
+		}*/
 	}
 }

src/Discord.Net/Helpers/Reference.cs

@@ -3,12 +3,12 @@
 namespace Discord
 {
     internal struct Reference<T>
-		where T : CachedObject
-    {
+		where T : CachedObject<long>
+	{
 		private Action<T> _onCache, _onUncache;
-		private Func<string, T> _getItem;
-        private string _id;
-		public string Id
+		private Func<long, T> _getItem;
+        private long? _id;
+		public long? Id
 		{
 			get { return _id; }
 			set
@@ -24,14 +24,15 @@ namespace Discord
 			get
 			{
 				var v = _value; //A little trickery to make this threadsafe
+				var id = _id;
 				if (v != null && !_value.IsCached)
 				{
 					v = null;
 					_value = null;
 				}
-				if (v == null && _id != null)
+				if (v == null && id != null)
 				{
-					v = _getItem(_id);
+					v = _getItem(id.Value);
 					if (v != null && _onCache != null)
 						_onCache(v);
 					_value = v;
@@ -55,9 +56,9 @@ namespace Discord
 			}
 		}
 
-		public Reference(Func<string, T> onUpdate, Action<T> onCache = null, Action<T> onUncache = null)
+		public Reference(Func<long, T> onUpdate, Action<T> onCache = null, Action<T> onUncache = null)
 			: this(null, onUpdate, onCache, onUncache) { }
-		public Reference(string id, Func<string, T> getItem, Action<T> onCache = null, Action<T> onUncache = null)
+		public Reference(long? id, Func<long, T> getItem, Action<T> onCache = null, Action<T> onUncache = null)
 		{
 			_id = id;
 			_getItem = getItem;

src/Discord.Net/Models/Channel.cs

@@ -6,15 +6,15 @@ using System.Linq;
 
 namespace Discord
 {
-	public sealed class Channel : CachedObject
+	public sealed class Channel : CachedObject<long>
 	{
 		public sealed class PermissionOverwrite
 		{
 			public PermissionTarget TargetType { get; }
-			public string TargetId { get; }
+			public long TargetId { get; }
 			public DualChannelPermissions Permissions { get; }
 
-			internal PermissionOverwrite(PermissionTarget targetType, string targetId, uint allow, uint deny)
+			internal PermissionOverwrite(PermissionTarget targetType, long targetId, uint allow, uint deny)
 			{
 				TargetType = targetType;
 				TargetId = targetId;
@@ -55,20 +55,20 @@ namespace Discord
 				return _members.Select(x => x.Value);
             }
 		}
-		private Dictionary<string, User> _members;
+		private Dictionary<long, User> _members;
 		private bool _areMembersStale;
 
 		/// <summary> Returns a collection of all messages the client has seen posted in this channel. This collection does not guarantee any ordering. </summary>
 		[JsonIgnore]
-		public IEnumerable<Message> Messages => _messages.Values;
-		private readonly ConcurrentDictionary<string, Message> _messages;
+		public IEnumerable<Message> Messages => _messages?.Values ?? Enumerable.Empty<Message>();
+		private readonly ConcurrentDictionary<long, Message> _messages;
 
 		/// <summary> Returns a collection of all custom permissions used for this channel. </summary>
 		private static readonly PermissionOverwrite[] _initialPermissionsOverwrites = new PermissionOverwrite[0];
 		private PermissionOverwrite[] _permissionOverwrites;
 		public IEnumerable<PermissionOverwrite> PermissionOverwrites { get { return _permissionOverwrites; } internal set { _permissionOverwrites = value.ToArray(); } }
 
-		internal Channel(DiscordClient client, string id, string serverId, string recipientId)
+		internal Channel(DiscordClient client, long id, long? serverId, long? recipientId)
 			: base(client, id)
 		{
 			_server = new Reference<Server>(serverId, 
@@ -92,7 +92,8 @@ namespace Discord
 			_areMembersStale = true;
 
 			//Local Cache
-			_messages = new ConcurrentDictionary<string, Message>();
+			if (client.Config.MessageCacheLength > 0)
+				_messages = new ConcurrentDictionary<long, Message>();
 		}
 		internal override void LoadReferences()
 		{
@@ -164,10 +165,10 @@ namespace Discord
 		{
 			if (IsPrivate)
 			{
-				_members = new Dictionary<string, User>()
+				_members = new Dictionary<long, User>()
 				{
 					{ _client.CurrentUserId, _client.PrivateUser },
-					{ _recipient.Id, _recipient.Value }
+					{ _recipient.Id.Value, _recipient.Value }
 				};
 			}
 			else if (Type == ChannelType.Text)
@@ -205,6 +206,6 @@ namespace Discord
 
 		public override bool Equals(object obj) => obj is Channel && (obj as Channel).Id == Id;
 		public override int GetHashCode() => unchecked(Id.GetHashCode() + 5658);
-		public override string ToString() => Name ?? Id;
+		public override string ToString() => Name ?? IdConvert.ToString(Id);
 	}
 }

src/Discord.Net/Models/GlobalUser.cs

@@ -6,9 +6,9 @@ using System.Linq;
 
 namespace Discord
 {
-	public sealed class GlobalUser : CachedObject
+	public sealed class GlobalUser : CachedObject<long>
 	{
-		private readonly ConcurrentDictionary<string, User> _users;
+		private readonly ConcurrentDictionary<long, User> _users;
 
 		/// <summary> Returns the email for this user. </summary>
 		/// <remarks> This field is only ever populated for the current logged in user. </remarks>
@@ -35,12 +35,12 @@ namespace Discord
 
 		/// <summary> Returns a collection of all server-specific data for every server this user is a member of. </summary>
 		[JsonIgnore]
-		internal IEnumerable<User> Memberships => _users.Select(x => _client.Users[Id, x.Key]);
+		internal IEnumerable<User> Memberships => _users.Select(x => x.Value);
 
-		internal GlobalUser(DiscordClient client, string id)
+		internal GlobalUser(DiscordClient client, long id)
 			: base(client, id)
 		{
-			_users = new ConcurrentDictionary<string, User>();
+			_users = new ConcurrentDictionary<long, User>();
 		}
 		internal override void LoadReferences() { }
 		internal override void UnloadReferences()
@@ -56,10 +56,10 @@ namespace Discord
 				IsVerified = model.IsVerified;
 		}
 
-		internal void AddUser(User user) => _users.TryAdd(user.UniqueId, user);
+		internal void AddUser(User user) => _users.TryAdd(user.Server?.Id ?? 0, user);
 		internal void RemoveUser(User user)
 		{
-			if (_users.TryRemove(user.UniqueId, out user))
+			if (_users.TryRemove(user.Server?.Id ?? 0, out user))
 				CheckUser();
         }
 		internal void CheckUser()
@@ -70,6 +70,6 @@ namespace Discord
 
 		public override bool Equals(object obj) => obj is GlobalUser && (obj as GlobalUser).Id == Id;
 		public override int GetHashCode() => unchecked(Id.GetHashCode() + 7891);
-		public override string ToString() => Id;
+		public override string ToString() => IdConvert.ToString(Id);
 	}
 }

src/Discord.Net/Models/Invite.cs

@@ -1,19 +1,18 @@
 using System;
 using Discord.API;
-using Newtonsoft.Json;
 
 namespace Discord
 {
-	public sealed class Invite : CachedObject
+	public sealed class Invite : CachedObject<string>
 	{
 		public sealed class ServerInfo
 		{
 			/// <summary> Returns the unique identifier of this server. </summary>
-			public string Id { get; }
+			public long Id { get; }
 			/// <summary> Returns the name of this server. </summary>
 			public string Name { get; }
 
-			internal ServerInfo(string id, string name)
+			internal ServerInfo(long id, string name)
 			{
 				Id = id;
 				Name = name;
@@ -22,11 +21,11 @@ namespace Discord
 		public sealed class ChannelInfo
 		{
 			/// <summary> Returns the unique identifier of this channel. </summary>
-			public string Id { get; }
+			public long Id { get; }
 			/// <summary> Returns the name of this channel. </summary>
 			public string Name { get; }
 
-			internal ChannelInfo(string id, string name)
+			internal ChannelInfo(long id, string name)
 			{
 				Id = id;
 				Name = name;
@@ -35,17 +34,17 @@ namespace Discord
 		public sealed class InviterInfo
 		{
 			/// <summary> Returns the unique identifier for this user. </summary>
-			public string Id { get; }
+			public long Id { get; }
 			/// <summary> Returns the name of this user. </summary>
 			public string Name { get; }
 			/// <summary> Returns the by-name unique identifier for this user. </summary>
-			public string Discriminator { get; }
+			public int Discriminator { get; }
 			/// <summary> Returns the unique identifier for this user's avatar. </summary>
 			public string AvatarId { get; }
 			/// <summary> Returns the full path to this user's avatar. </summary>
 			public string AvatarUrl => User.GetAvatarUrl(Id, AvatarId);
 
-			internal InviterInfo(string id, string name, string discriminator, string avatarId)
+			internal InviterInfo(long id, string name, int discriminator, string avatarId)
 			{
 				Id = id;
 				Name = name;
@@ -76,9 +75,9 @@ namespace Discord
 		public DateTime CreatedAt { get; private set; }
 
 		/// <summary> Returns a URL for this invite using XkcdCode if available or Id if not. </summary>
-		public string Url => API.Endpoints.InviteUrl(XkcdCode ?? Id);
+		public string Url => API.Endpoints.InviteUrl(XkcdCode ?? Id.ToString());
 
-		internal Invite(DiscordClient client, string code, string xkcdPass, string serverId, string inviterId, string channelId)
+		internal Invite(DiscordClient client, string code, string xkcdPass)
 			: base(client, code)
 		{
 			XkcdCode = xkcdPass;
@@ -93,7 +92,7 @@ namespace Discord
 			if (model.Channel != null)
 				Channel = new ChannelInfo(model.Channel.Id, model.Channel.Name);
 			if (model.Inviter != null)
-				Inviter = new InviterInfo(model.Inviter.Id, model.Inviter.Username, model.Inviter.Discriminator, model.Inviter.Avatar);
+				Inviter = new InviterInfo(model.Inviter.Id, model.Inviter.Username, model.Inviter.Discriminator.Value, model.Inviter.Avatar);
         }
         internal void Update(InviteInfo model)
 		{

src/Discord.Net/Models/Message.cs

@@ -6,7 +6,7 @@ using System.Linq;
 
 namespace Discord
 {
-	public sealed class Message : CachedObject
+	public sealed class Message : CachedObject<long>
 	{
 		public sealed class Attachment : File
 		{
@@ -90,9 +90,6 @@ namespace Discord
 				Height = height;
 			}
 		}
-				
-		/// <summary> Returns the local unique identifier for this message. </summary>
-		public string Nonce { get; internal set; }
 
 		/// <summary> Returns true if the logged-in user was mentioned. </summary>
 		/// <remarks> This is not set to true if the user was mentioned with @everyone (see IsMentioningEverone). </remarks>
@@ -145,7 +142,7 @@ namespace Discord
 		public User User => _user.Value;
 		private readonly Reference<User> _user;
 
-		internal Message(DiscordClient client, string id, string channelId, string userId)
+		internal Message(DiscordClient client, long id, long channelId, long userId)
 			: base(client, id)
 		{
 			_channel = new Reference<Channel>(channelId,

src/Discord.Net/Models/Role.cs

@@ -5,7 +5,7 @@ using System.Linq;
 
 namespace Discord
 {
-	public sealed class Role : CachedObject
+	public sealed class Role : CachedObject<long>
 	{		
 		/// <summary> Returns the name of this role. </summary>
 		public string Name { get; private set; }
@@ -33,7 +33,7 @@ namespace Discord
 		public IEnumerable<User> Members => _server.Id != null ? (IsEveryone ? Server.Members : Server.Members.Where(x => x.HasRole(this))) : new User[0];
 		//TODO: Add local members cache
 
-		internal Role(DiscordClient client, string id, string serverId)
+		internal Role(DiscordClient client, long id, long serverId)
 			: base(client, id)
 		{
 			_server = new Reference<Server>(serverId, x => _client.Servers[x], x => x.AddRole(this), x => x.RemoveRole(this));
@@ -72,6 +72,6 @@ namespace Discord
 
 		public override bool Equals(object obj) => obj is Role && (obj as Role).Id == Id;
 		public override int GetHashCode() => unchecked(Id.GetHashCode() + 6653);
-		public override string ToString() => Name ?? Id;
+		public override string ToString() => Name ?? IdConvert.ToString(Id);
 	}
 }

src/Discord.Net/Models/Server.cs

@@ -7,7 +7,7 @@ using System.Linq;
 
 namespace Discord
 {
-	public sealed class Server : CachedObject
+	public sealed class Server : CachedObject<long>
 	{		
 		/// <summary> Returns the name of this channel. </summary>
 		public string Name { get; private set; }
@@ -28,7 +28,7 @@ namespace Discord
 		/// <summary> Returns the user that first created this server. </summary>
 		[JsonIgnore]
 		public User Owner { get; private set; }
-		private string _ownerId;
+		private long _ownerId;
 
 		/// <summary> Returns the AFK voice channel for this server (see AFKTimeout). </summary>
 		[JsonIgnore]
@@ -41,8 +41,8 @@ namespace Discord
 
 		/// <summary> Returns a collection of the ids of all users banned on this server. </summary>
 		[JsonIgnore]
-		public IEnumerable<string> Bans => _bans.Select(x => x.Key);
-		private ConcurrentDictionary<string, bool> _bans;
+		public IEnumerable<long> Bans => _bans.Select(x => x.Key);
+		private ConcurrentDictionary<long, bool> _bans;
 		
 		/// <summary> Returns a collection of all channels within this server. </summary>
 		[JsonIgnore]
@@ -53,12 +53,12 @@ namespace Discord
 		/// <summary> Returns a collection of all channels within this server. </summary>
 		[JsonIgnore]
 		public IEnumerable<Channel> VoiceChannels => _channels.Select(x => x.Value).Where(x => x.Type == ChannelType.Voice);
-		private ConcurrentDictionary<string, Channel> _channels;
+		private ConcurrentDictionary<long, Channel> _channels;
 
 		/// <summary> Returns a collection of all users within this server with their server-specific data. </summary>
 		[JsonIgnore]
 		public IEnumerable<User> Members => _members.Select(x => x.Value);
-		private ConcurrentDictionary<string, User> _members;
+		private ConcurrentDictionary<long, User> _members;
 
 		/// <summary> Return the the role representing all users in a server. </summary>
 		[JsonIgnore]
@@ -66,20 +66,20 @@ namespace Discord
 		/// <summary> Returns a collection of all roles within this server. </summary>
 		[JsonIgnore]
 		public IEnumerable<Role> Roles => _roles.Select(x => x.Value);
-		private ConcurrentDictionary<string, Role> _roles;
+		private ConcurrentDictionary<long, Role> _roles;
 
-		internal Server(DiscordClient client, string id)
+		internal Server(DiscordClient client, long id)
 			: base(client, id)
 		{
 			_afkChannel = new Reference<Channel>(x => _client.Channels[x]);
 
 			//Global Cache
-			_channels = new ConcurrentDictionary<string, Channel>();
-			_members = new ConcurrentDictionary<string, User>();
-			_roles = new ConcurrentDictionary<string, Role>();
+			_channels = new ConcurrentDictionary<long, Channel>();
+			_members = new ConcurrentDictionary<long, User>();
+			_roles = new ConcurrentDictionary<long, Role>();
 
 			//Local Cache
-			_bans = new ConcurrentDictionary<string, bool>();
+			_bans = new ConcurrentDictionary<long, bool>();
         }
 		internal override void LoadReferences()
 		{
@@ -129,7 +129,7 @@ namespace Discord
 				JoinedAt = model.JoinedAt.Value;
 			if (model.OwnerId != null && _ownerId != model.OwnerId)
 			{
-				_ownerId = model.OwnerId;
+				_ownerId = model.OwnerId.Value;
 				Owner = _client.Users[_ownerId, Id];
 			}
 			if (model.Region != null)
@@ -178,11 +178,11 @@ namespace Discord
 			}
 		}
 
-		internal void AddBan(string banId)
+		internal void AddBan(long banId)
 		{
 			_bans.TryAdd(banId, true);
 		}
-		internal bool RemoveBan(string banId)
+		internal bool RemoveBan(long banId)
 		{
 			bool ignored;
 			return _bans.TryRemove(banId, out ignored);
@@ -254,6 +254,6 @@ namespace Discord
 
 		public override bool Equals(object obj) => obj is Server && (obj as Server).Id == Id;
 		public override int GetHashCode() => unchecked(Id.GetHashCode() + 5175);
-		public override string ToString() => Name ?? Id;
+		public override string ToString() => Name ?? IdConvert.ToString(Id);
 	}
 }

src/Discord.Net/Models/User.cs

@@ -20,20 +20,34 @@ namespace Discord
         }
 	}
 
-	public class User : CachedObject
+	public class User : CachedObject<long>
 	{
-		internal static string GetId(string userId, string serverId) => (serverId ?? "Private") + '_' + userId;
-		internal static string GetAvatarUrl(string userId, string avatarId) => avatarId != null ? Endpoints.UserAvatar(userId, avatarId) : null;
+		internal struct CompositeKey : IEquatable<CompositeKey>
+		{
+			public long ServerId, UserId;
+			public CompositeKey(long userId, long? serverId)
+			{
+				ServerId = serverId ?? 0;
+				UserId = userId;
+			}
+
+			public bool Equals(CompositeKey other)
+				=> UserId == other.UserId && ServerId == other.ServerId;
+			public override int GetHashCode()
+				=> unchecked(ServerId.GetHashCode() + UserId.GetHashCode() + 23);
+		}
+
+		internal static string GetAvatarUrl(long userId, string avatarId) => avatarId != null ? Endpoints.UserAvatar(userId, avatarId) : null;
 		
-		private ConcurrentDictionary<string, ChannelPermissionsPair> _permissions;
+		private ConcurrentDictionary<long, ChannelPermissionsPair> _permissions;
 		private ServerPermissions _serverPermissions;
 
 		/// <summary> Returns a unique identifier combining this user's id with its server's. </summary>
-		internal string UniqueId => GetId(Id, _server.Id);
+		internal CompositeKey UniqueId => new CompositeKey(_server.Id ?? 0, Id);
 		/// <summary> Returns the name of this user on this server. </summary>
 		public string Name { get; private set; }
 		/// <summary> Returns a by-name unique identifier separating this user from others with the same name. </summary>
-		public string Discriminator { get; private set; }
+		public short Discriminator { get; private set; }
 		/// <summary> Returns the unique identifier for this user's current avatar. </summary>
 		public string AvatarId { get; private set; }
 		/// <summary> Returns the URL to this user's current avatar. </summary>
@@ -47,6 +61,7 @@ namespace Discord
 		public bool IsServerDeafened { get; private set; }
 		public bool IsServerSuppressed { get; private set; }
 		public bool IsSpeaking { get; internal set; }
+		public bool IsPrivate => _server.Id == null;
 
 		public string SessionId { get; private set; }
 		public string Token { get; private set; }
@@ -79,7 +94,7 @@ namespace Discord
 
 		[JsonIgnore]
 		public IEnumerable<Role> Roles => _roles.Select(x => x.Value);
-		private Dictionary<string, Role> _roles;
+		private Dictionary<long, Role> _roles;
 
 		/// <summary> Returns a collection of all messages this user has sent on this server that are still in cache. </summary>
 		[JsonIgnore]
@@ -118,7 +133,7 @@ namespace Discord
 			}
 		}
 
-		internal User(DiscordClient client, string id, string serverId)
+		internal User(DiscordClient client, long id, long? serverId)
 			: base(client, id)
 		{
 			_globalUser = new Reference<GlobalUser>(id, 
@@ -140,13 +155,13 @@ namespace Discord
 						x.CurrentUser = null;
 				});
 			_voiceChannel = new Reference<Channel>(x => _client.Channels[x]);
-			_roles = new Dictionary<string, Role>();
+			_roles = new Dictionary<long, Role>();
 
 			Status = UserStatus.Offline;
 			//_channels = new ConcurrentDictionary<string, Channel>();
 			if (serverId != null)
 			{
-				_permissions = new ConcurrentDictionary<string, ChannelPermissionsPair>();
+				_permissions = new ConcurrentDictionary<long, ChannelPermissionsPair>();
 				_serverPermissions = new ServerPermissions();
 			}
 
@@ -169,7 +184,7 @@ namespace Discord
 			if (model.Avatar != null)
 				AvatarId = model.Avatar;
 			if (model.Discriminator != null)
-				Discriminator = model.Discriminator;
+				Discriminator = model.Discriminator.Value;
 			if (model.Username != null)
 				Name = model.Username;
 		}
@@ -243,11 +258,11 @@ namespace Discord
         }
 		private void UpdateRoles(IEnumerable<Role> roles)
 		{
-			Dictionary<string, Role> newRoles;
+			Dictionary<long, Role> newRoles;
 			if (roles != null)
 				newRoles = roles.ToDictionary(x => x.Id, x => x);
 			else
-				newRoles = new Dictionary<string, Role>();
+				newRoles = new Dictionary<long, Role>();
 
 			if (_server.Id != null)
 			{
@@ -378,6 +393,6 @@ namespace Discord
 
 		public override bool Equals(object obj) => obj is User && (obj as User).Id == Id;
 		public override int GetHashCode() => unchecked(Id.GetHashCode() + 7230);
-		public override string ToString() => Name ?? Id;
+		public override string ToString() => Name ?? IdConvert.ToString(Id);
 	}
 }

src/Discord.Net/Net/WebSockets/DataWebSocket.cs

@@ -128,20 +128,20 @@ namespace Discord.Net.WebSockets
             QueueMessage(updateStatus);
 		}
 
-		public void SendJoinVoice(string serverId, string channelId)
+		public void SendJoinVoice(long serverId, long channelId)
 		{
 			var joinVoice = new JoinVoiceCommand();
 			joinVoice.Payload.ServerId = serverId;
 			joinVoice.Payload.ChannelId = channelId;
 			QueueMessage(joinVoice);
 		}
-		public void SendLeaveVoice(string serverId)
+		public void SendLeaveVoice(long serverId)
 		{
 			var leaveVoice = new JoinVoiceCommand();
 			leaveVoice.Payload.ServerId = serverId;
 			QueueMessage(leaveVoice);
 		}
-		public void SendGetUsers(string serverId, string query = "", int limit = 0)
+		public void SendGetUsers(long serverId, string query = "", int limit = 0)
 		{
 			var getOfflineUsers = new GetUsersCommand();
 			getOfflineUsers.Payload.ServerId = serverId;

src/Discord.Net/Net/WebSockets/VoiceWebSocket.Events.cs

@@ -4,9 +4,9 @@ namespace Discord.Net.WebSockets
 {
 	internal sealed class IsTalkingEventArgs : EventArgs
 	{
-		public readonly string UserId;
+		public readonly long UserId;
 		public readonly bool IsSpeaking;
-		internal IsTalkingEventArgs(string userId, bool isTalking)
+		internal IsTalkingEventArgs(long userId, bool isTalking)
 		{
 			UserId = userId;
 			IsSpeaking = isTalking;
@@ -16,14 +16,14 @@ namespace Discord.Net.WebSockets
 	internal partial class VoiceWebSocket
 	{
 		public event EventHandler<IsTalkingEventArgs> IsSpeaking;
-		private void RaiseIsSpeaking(string userId, bool isSpeaking)
+		private void RaiseIsSpeaking(long userId, bool isSpeaking)
 		{
 			if (IsSpeaking != null)
 				IsSpeaking(this, new IsTalkingEventArgs(userId, isSpeaking));
 		}
 
 		public event EventHandler<VoicePacketEventArgs> OnPacket;
-		internal void RaiseOnPacket(string userId, string channelId, byte[] buffer, int offset, int count)
+		internal void RaiseOnPacket(long userId, long channelId, byte[] buffer, int offset, int count)
 		{
 			if (OnPacket != null)
 				OnPacket(this, new VoicePacketEventArgs(userId, channelId, buffer, offset, count));

src/Discord.Net/Net/WebSockets/VoiceWebSocket.cs

@@ -26,7 +26,7 @@ namespace Discord.Net.WebSockets
 		private OpusEncoder _encoder;
 		private readonly ConcurrentDictionary<uint, OpusDecoder> _decoders;
 		private uint _ssrc;
-		private ConcurrentDictionary<uint, string> _ssrcMapping;
+		private ConcurrentDictionary<uint, long> _ssrcMapping;
 
 		private VoiceBuffer _sendBuffer;
 		private UdpClient _udp;
@@ -34,12 +34,13 @@ namespace Discord.Net.WebSockets
 		private bool _isEncrypted;
 		private byte[] _secretKey, _encodingBuffer;
 		private ushort _sequence;
-		private string _serverId, _channelId, _userId, _sessionId, _token, _encryptionMode;
+		private long? _serverId, _channelId, _userId;
+		private string _sessionId, _token, _encryptionMode;
 		
 		private Thread _sendThread, _receiveThread;
 
-		public string CurrentServerId => _serverId;
-		public string CurrentChannelId => _channelId;
+		public long? CurrentServerId => _serverId;
+		public long? CurrentChannelId => _channelId;
 		public VoiceBuffer OutputBuffer => _sendBuffer;
 
 		public VoiceWebSocket(DiscordWSClient client)
@@ -49,19 +50,19 @@ namespace Discord.Net.WebSockets
 			_decoders = new ConcurrentDictionary<uint, OpusDecoder>();
 			_targetAudioBufferLength = client.Config.VoiceBufferLength / 20; //20 ms frames
 			_encodingBuffer = new byte[MaxOpusSize];
-			_ssrcMapping = new ConcurrentDictionary<uint, string>();
+			_ssrcMapping = new ConcurrentDictionary<uint, long>();
 			_encoder = new OpusEncoder(48000, 1, 20, Opus.Application.Audio);
 			_sendBuffer = new VoiceBuffer((int)Math.Ceiling(client.Config.VoiceBufferLength / (double)_encoder.FrameLength), _encoder.FrameSize);
         }
 
-		public Task SetChannel(string serverId, string channelId)
+		public Task SetChannel(long serverId, long channelId)
 		{
 			_serverId = serverId;
 			_channelId = channelId;
 
 			return base.BeginConnect();
         }
-		public async Task Login(string userId, string sessionId, string token, CancellationToken cancelToken)
+		public async Task Login(long userId, string sessionId, string token, CancellationToken cancelToken)
 		{
 			if ((WebSocketState)_state == WebSocketState.Connected)
 			{
@@ -108,10 +109,10 @@ namespace Discord.Net.WebSockets
 			_udp = new UdpClient(new IPEndPoint(IPAddress.Any, 0));
 
 			VoiceLoginCommand msg = new VoiceLoginCommand();
-			msg.Payload.ServerId = _serverId;
+			msg.Payload.ServerId = _serverId.Value;
 			msg.Payload.SessionId = _sessionId;
 			msg.Payload.Token = _token;
-			msg.Payload.UserId = _userId;
+			msg.Payload.UserId = _userId.Value;
 			QueueMessage(msg);
 
 			List<Task> tasks = new List<Task>();
@@ -232,16 +233,9 @@ namespace Discord.Net.WebSockets
 							else
 							{
 								//Parse RTP Data
-								if (packetLength < 12)
-									return;
-
-								byte flags = packet[0];
-								if (flags != 0x80)
-									return;
-
-								byte payloadType = packet[1];
-								if (payloadType != 0x78)
-									return;
+								if (packetLength < 12) return;
+								if (packet[0] != 0x80) return; //Flags
+								if (packet[1] != 0x78) return; //Payload Type
 
 								ushort sequenceNumber = (ushort)((packet[2] << 8) |
 																  packet[3] << 0);
@@ -278,9 +272,9 @@ namespace Discord.Net.WebSockets
 								/*if (_logLevel >= LogMessageSeverity.Debug)
 									RaiseOnLog(LogMessageSeverity.Debug, $"Received {buffer.Length - 12} bytes.");*/
 
-								string userId;
+								long userId;
 								if (_ssrcMapping.TryGetValue(ssrc, out userId))
-									RaiseOnPacket(userId, _channelId, result, resultOffset, resultLength);
+									RaiseOnPacket(userId, _channelId.Value, result, resultOffset, resultLength);
 							}
 						}
 					}
@@ -302,9 +296,9 @@ namespace Discord.Net.WebSockets
 
 				byte[] frame = new byte[_encoder.FrameSize];
 				byte[] encodedFrame = new byte[MaxOpusSize];
-				byte[] udpPacket, nonce = null;
+				byte[] voicePacket, pingPacket, nonce = null;
 				uint timestamp = 0;
-				double nextTicks = 0.0;
+				double nextTicks = 0.0, nextPingTicks = 0.0;
 				double ticksPerMillisecond = Stopwatch.Frequency / 1000.0;
 				double ticksPerFrame = ticksPerMillisecond * _encoder.FrameLength;
 				double spinLockThreshold = 3 * ticksPerMillisecond;
@@ -314,38 +308,58 @@ namespace Discord.Net.WebSockets
 				if (_isEncrypted)
 				{
 					nonce = new byte[24];
-					udpPacket = new byte[MaxOpusSize + 12 + 16];
+					voicePacket = new byte[MaxOpusSize + 12 + 16];
 				}
 				else
-					udpPacket = new byte[MaxOpusSize + 12];
+					voicePacket = new byte[MaxOpusSize + 12];
+				
+				pingPacket = new byte[8];
+				pingPacket[0] = 0x80; //Flags;
+				pingPacket[1] = 0x78; //Payload Type
+				pingPacket[3] = 0x00; //Length
+				pingPacket[4] = 0x01; //Length (1*8 bytes)
+				pingPacket[5] = (byte)((_ssrc >> 24) & 0xFF);
+				pingPacket[6] = (byte)((_ssrc >> 16) & 0xFF);
+				pingPacket[7] = (byte)((_ssrc >> 8) & 0xFF);
+				pingPacket[8] = (byte)((_ssrc >> 0) & 0xFF);
+				if (_isEncrypted)
+				{
+					Buffer.BlockCopy(pingPacket, 0, nonce, 0, 8);
+					int ret = Sodium.Encrypt(pingPacket, 8, encodedFrame, 0, nonce, _secretKey);
+					if (ret != 0)
+						throw new InvalidOperationException("Failed to encrypt ping packet");
+					pingPacket = new byte[ret];
+					Buffer.BlockCopy(encodedFrame, 0, pingPacket, 0, ret);
+                }
 
 				int rtpPacketLength = 0;
-				udpPacket[0] = 0x80; //Flags;
-				udpPacket[1] = 0x78; //Payload Type
-				udpPacket[8] = (byte)((_ssrc >> 24) & 0xFF);
-				udpPacket[9] = (byte)((_ssrc >> 16) & 0xFF);
-				udpPacket[10] = (byte)((_ssrc >> 8) & 0xFF);
-				udpPacket[11] = (byte)((_ssrc >> 0) & 0xFF);
+				voicePacket[0] = 0x80; //Flags;
+				voicePacket[1] = 0xC9; //Payload Type
+				voicePacket[8] = (byte)((_ssrc >> 24) & 0xFF);
+				voicePacket[9] = (byte)((_ssrc >> 16) & 0xFF);
+				voicePacket[10] = (byte)((_ssrc >> 8) & 0xFF);
+				voicePacket[11] = (byte)((_ssrc >> 0) & 0xFF);
 
 				if  (_isEncrypted)
-					Buffer.BlockCopy(udpPacket, 0, nonce, 0, 12);
+					Buffer.BlockCopy(voicePacket, 0, nonce, 0, 12);
 
 				while (!cancelToken.IsCancellationRequested)
 				{
 					double ticksToNextFrame = nextTicks - sw.ElapsedTicks;
 					if (ticksToNextFrame <= 0.0)
 					{
-						while (sw.ElapsedTicks > nextTicks)
+						long currentTicks = sw.ElapsedTicks;
+						while (currentTicks > nextTicks)
 						{
 							if (_sendBuffer.Pop(frame))
 							{
 								ushort sequence = unchecked(_sequence++);
-								udpPacket[2] = (byte)((sequence >> 8) & 0xFF);
-								udpPacket[3] = (byte)((sequence >> 0) & 0xFF);
-								udpPacket[4] = (byte)((timestamp >> 24) & 0xFF);
-								udpPacket[5] = (byte)((timestamp >> 16) & 0xFF);
-								udpPacket[6] = (byte)((timestamp >> 8) & 0xFF);
-								udpPacket[7] = (byte)((timestamp >> 0) & 0xFF);
+								voicePacket[2] = (byte)((sequence >> 8) & 0xFF);
+								voicePacket[3] = (byte)((sequence >> 0) & 0xFF);
+								voicePacket[4] = (byte)((timestamp >> 24) & 0xFF);
+								voicePacket[5] = (byte)((timestamp >> 16) & 0xFF);
+								voicePacket[6] = (byte)((timestamp >> 8) & 0xFF);
+								voicePacket[7] = (byte)((timestamp >> 0) & 0xFF);
 
 								//Encode
 								int encodedLength = _encoder.EncodeFrame(frame, 0, encodedFrame);
@@ -353,23 +367,28 @@ namespace Discord.Net.WebSockets
 								//Encrypt
 								if (_isEncrypted)
 								{
-									Buffer.BlockCopy(udpPacket, 2, nonce, 2, 6); //Update nonce
-									int ret = Sodium.Encrypt(encodedFrame, encodedLength, udpPacket, 12, nonce, _secretKey);
+									Buffer.BlockCopy(voicePacket, 2, nonce, 2, 6); //Update nonce
+									int ret = Sodium.Encrypt(encodedFrame, encodedLength, voicePacket, 12, nonce, _secretKey);
 									if (ret != 0)
 										continue;
 									rtpPacketLength = encodedLength + 12 + 16;
 								}
 								else
 								{
-									Buffer.BlockCopy(encodedFrame, 0, udpPacket, 12, encodedLength);
+									Buffer.BlockCopy(encodedFrame, 0, voicePacket, 12, encodedLength);
 									rtpPacketLength = encodedLength + 12;
 								}
-								_udp.Send(udpPacket, rtpPacketLength);
+								_udp.Send(voicePacket, rtpPacketLength);
 							}
 							timestamp = unchecked(timestamp + samplesPerFrame);
 							nextTicks += ticksPerFrame;
 						}
-					}
+						if (currentTicks > nextPingTicks)
+						{
+							_udp.Send(pingPacket, pingPacket.Length);
+							nextPingTicks = currentTicks + 5 * Stopwatch.Frequency;
+                        }
+                    }
 					//Dont sleep if we need to output audio in the next spinLockThreshold
 					else if (ticksToNextFrame > spinLockThreshold)
 					{