using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Security;
using System.Security.Authentication;
using System.Security.Permissions;
using BaboonAPI.Hooks.Initializer;
using BepInEx;
using Microsoft.CodeAnalysis;
using UnityEngine;
using WebSocketSharp;
using WebSocketSharp.Net;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.Default | DebuggableAttribute.DebuggingModes.DisableOptimizations | DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints | DebuggableAttribute.DebuggingModes.EnableEditAndContinue)]
[assembly: TargetFramework(".NETFramework,Version=v4.7.2", FrameworkDisplayName = ".NET Framework 4.7.2")]
[assembly: AssemblyCompany("TootTallyWebsocketLibs")]
[assembly: AssemblyConfiguration("Debug")]
[assembly: AssemblyDescription("Websocket management for TootTally modules")]
[assembly: AssemblyFileVersion("1.0.1.0")]
[assembly: AssemblyInformationalVersion("1.0.1")]
[assembly: AssemblyProduct("TootTallyWebsocketLibs")]
[assembly: AssemblyTitle("TootTallyWebsocketLibs")]
[assembly: SecurityPermission(SecurityAction.RequestMinimum, SkipVerification = true)]
[assembly: AssemblyVersion("1.0.1.0")]
[module: UnverifiableCode]
[module: RefSafetyRules(11)]
namespace Microsoft.CodeAnalysis
{
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	internal sealed class EmbeddedAttribute : Attribute
	{
	}
}
namespace System.Runtime.CompilerServices
{
	[CompilerGenerated]
	[Microsoft.CodeAnalysis.Embedded]
	[AttributeUsage(AttributeTargets.Module, AllowMultiple = false, Inherited = false)]
	internal sealed class RefSafetyRulesAttribute : Attribute
	{
		public readonly int Version;

		public RefSafetyRulesAttribute(int P_0)
		{
			Version = P_0;
		}
	}
}
namespace TootTallyWebsocketLibs
{
	[BepInPlugin("TootTallyWebsocketLibs", "TootTallyWebsocketLibs", "1.0.1")]
	public class Plugin : BaseUnityPlugin
	{
		public static Plugin Instance;

		public static void LogInfo(string message)
		{
			((BaseUnityPlugin)Instance).Logger.LogInfo((object)message);
		}

		public static void LogError(string message)
		{
			((BaseUnityPlugin)Instance).Logger.LogError((object)message);
		}

		private void Awake()
		{
			if (!((Object)(object)Instance != (Object)null))
			{
				Instance = this;
				GameInitializationEvent.Register(((BaseUnityPlugin)this).Info, (Action)delegate
				{
				});
			}
		}
	}
	public class WebsocketManager
	{
		private WebSocket _websocket;

		public bool IsHost { get; private set; }

		public bool IsConnected { get; private set; }

		public bool ConnectionPending { get; protected set; }

		protected string _id { get; private set; }

		protected string _url { get; private set; }

		protected string _version { get; private set; }

		public WebsocketManager(string id, string url, string version)
		{
			_url = url;
			_id = id;
			_version = version;
		}

		public void SendToSocket(byte[] data)
		{
			WebSocket websocket = _websocket;
			if (websocket != null)
			{
				websocket.SendAsync(data, (Action<bool>)null);
			}
		}

		public void SendToSocket(string data)
		{
			WebSocket websocket = _websocket;
			if (websocket != null)
			{
				websocket.SendAsync(data, (Action<bool>)null);
			}
		}

		protected virtual void OnDataReceived(object sender, MessageEventArgs e)
		{
		}

		protected virtual void CloseWebsocket()
		{
			_websocket.CloseAsync();
			Plugin.LogInfo("Disconnecting from " + _websocket.Url);
			_websocket = null;
		}

		protected virtual void OnWebSocketOpen(object sender, EventArgs e)
		{
			IsConnected = true;
			ConnectionPending = false;
			Plugin.LogInfo($"Connected to WebSocket server {_websocket.Url}");
		}

		protected virtual void OnWebSocketClose(object sender, EventArgs e)
		{
			IsConnected = false;
			IsHost = false;
			ConnectionPending = false;
			Plugin.LogInfo("Disconnected from websocket");
		}

		public void ConnectToWebSocketServer(string url, string apiKey, bool isHost)
		{
			_websocket = CreateNewWebSocket(url);
			_websocket.CustomHeaders = new Dictionary<string, string>
			{
				{
					"Authorization",
					"APIKey " + apiKey
				},
				{ "Version", _version }
			};
			Plugin.LogInfo("Connecting to WebSocket server...");
			IsHost = isHost;
			_websocket.ConnectAsync();
		}

		private WebSocket CreateNewWebSocket(string url)
		{
			//IL_0007: Unknown result type (might be due to invalid IL or missing references)
			//IL_000d: Expected O, but got Unknown
			WebSocket val = new WebSocket(url, Array.Empty<string>());
			val.OnError += delegate(object sender, ErrorEventArgs e)
			{
				Plugin.LogError(e.Message);
			};
			val.OnOpen += OnWebSocketOpen;
			val.OnClose += OnWebSocketClose;
			val.OnMessage += OnDataReceived;
			((SslConfiguration)val.SslConfiguration).EnabledSslProtocols = SslProtocols.Tls12;
			return val;
		}
	}
	public static class PluginInfo
	{
		public const string PLUGIN_GUID = "TootTallyWebsocketLibs";

		public const string PLUGIN_NAME = "TootTallyWebsocketLibs";

		public const string PLUGIN_VERSION = "1.0.1";
	}
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.IO.Compression;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.Security.Authentication;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Security.Permissions;
using System.Security.Principal;
using System.Text;
using System.Threading;
using System.Timers;
using WebSocketSharp.Net;
using WebSocketSharp.Net.WebSockets;
using WebSocketSharp.Server;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.Default | DebuggableAttribute.DebuggingModes.DisableOptimizations | DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints | DebuggableAttribute.DebuggingModes.EnableEditAndContinue)]
[assembly: AssemblyTitle("websocket-sharp-customheaders")]
[assembly: AssemblyDescription("A C# implementation of the WebSocket protocol client and server with custom headers")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("websocket-sharp-customheaders.dll")]
[assembly: AssemblyCopyright("sta.blockhead")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyVersion("1.0.2.31869")]
namespace WebSocketSharp
{
	public static class Ext
	{
		private static readonly byte[] _last = new byte[1];

		private static readonly int _retry = 5;

		private const string _tspecials = "()<>@,;:\\\"/[]?={} \t";

		private static byte[] compress(this byte[] data)
		{
			if (data.LongLength == 0)
			{
				return data;
			}
			using MemoryStream stream = new MemoryStream(data);
			return stream.compressToArray();
		}

		private static MemoryStream compress(this Stream stream)
		{
			MemoryStream memoryStream = new MemoryStream();
			if (stream.Length == 0)
			{
				return memoryStream;
			}
			stream.Position = 0L;
			using DeflateStream deflateStream = new DeflateStream(memoryStream, CompressionMode.Compress, leaveOpen: true);
			CopyTo(stream, deflateStream, 1024);
			deflateStream.Close();
			memoryStream.Write(_last, 0, 1);
			memoryStream.Position = 0L;
			return memoryStream;
		}

		private static byte[] compressToArray(this Stream stream)
		{
			using MemoryStream memoryStream = stream.compress();
			memoryStream.Close();
			return memoryStream.ToArray();
		}

		private static byte[] decompress(this byte[] data)
		{
			if (data.LongLength == 0)
			{
				return data;
			}
			using MemoryStream stream = new MemoryStream(data);
			return stream.decompressToArray();
		}

		private static MemoryStream decompress(this Stream stream)
		{
			MemoryStream memoryStream = new MemoryStream();
			if (stream.Length == 0)
			{
				return memoryStream;
			}
			stream.Position = 0L;
			using DeflateStream source = new DeflateStream(stream, CompressionMode.Decompress, leaveOpen: true);
			CopyTo(source, memoryStream, 1024);
			memoryStream.Position = 0L;
			return memoryStream;
		}

		private static byte[] decompressToArray(this Stream stream)
		{
			using MemoryStream memoryStream = stream.decompress();
			memoryStream.Close();
			return memoryStream.ToArray();
		}

		private static void times(this ulong n, Action action)
		{
			for (ulong num = 0uL; num < n; num++)
			{
				action();
			}
		}

		internal static byte[] Append(this ushort code, string reason)
		{
			byte[] array = code.InternalToByteArray(ByteOrder.Big);
			if (reason != null && reason.Length > 0)
			{
				List<byte> list = new List<byte>(array);
				list.AddRange(Encoding.UTF8.GetBytes(reason));
				array = list.ToArray();
			}
			return array;
		}

		internal static string CheckIfAvailable(this ServerState state, bool ready, bool start, bool shutting)
		{
			return ((!ready && (state == ServerState.Ready || state == ServerState.Stop)) || (!start && state == ServerState.Start) || (!shutting && state == ServerState.ShuttingDown)) ? ("This operation isn't available in: " + state.ToString().ToLower()) : null;
		}

		internal static string CheckIfAvailable(this WebSocketState state, bool connecting, bool open, bool closing, bool closed)
		{
			return ((!connecting && state == WebSocketState.Connecting) || (!open && state == WebSocketState.Open) || (!closing && state == WebSocketState.Closing) || (!closed && state == WebSocketState.Closed)) ? ("This operation isn't available in: " + state.ToString().ToLower()) : null;
		}

		internal static string CheckIfValidProtocols(this string[] protocols)
		{
			return protocols.Contains((string protocol) => protocol == null || protocol.Length == 0 || !protocol.IsToken()) ? "Contains an invalid value." : (protocols.ContainsTwice() ? "Contains a value twice." : null);
		}

		internal static string CheckIfValidServicePath(this string path)
		{
			return (path == null || path.Length == 0) ? "'path' is null or empty." : ((path[0] != '/') ? "'path' isn't an absolute path." : ((path.IndexOfAny(new char[2] { '?', '#' }) > -1) ? "'path' includes either or both query and fragment components." : null));
		}

		internal static string CheckIfValidSessionID(this string id)
		{
			return (id == null || id.Length == 0) ? "'id' is null or empty." : null;
		}

		internal static string CheckIfValidWaitTime(this TimeSpan time)
		{
			return (time <= TimeSpan.Zero) ? "A wait time is zero or less." : null;
		}

		internal static bool CheckWaitTime(this TimeSpan time, out string message)
		{
			message = null;
			if (time <= TimeSpan.Zero)
			{
				message = "A wait time is zero or less.";
				return false;
			}
			return true;
		}

		internal static void Close(this WebSocketSharp.Net.HttpListenerResponse response, WebSocketSharp.Net.HttpStatusCode code)
		{
			response.StatusCode = (int)code;
			response.OutputStream.Close();
		}

		internal static void CloseWithAuthChallenge(this WebSocketSharp.Net.HttpListenerResponse response, string challenge)
		{
			response.Headers.InternalSet("WWW-Authenticate", challenge, response: true);
			response.Close(WebSocketSharp.Net.HttpStatusCode.Unauthorized);
		}

		internal static byte[] Compress(this byte[] data, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? data.compress() : data;
		}

		internal static Stream Compress(this Stream stream, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? stream.compress() : stream;
		}

		internal static byte[] CompressToArray(this Stream stream, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? stream.compressToArray() : stream.ToByteArray();
		}

		internal static bool Contains<T>(this IEnumerable<T> source, Func<T, bool> condition)
		{
			foreach (T item in source)
			{
				if (condition(item))
				{
					return true;
				}
			}
			return false;
		}

		internal static bool ContainsTwice(this string[] values)
		{
			int len = values.Length;
			Func<int, bool> contains = null;
			contains = delegate(int idx)
			{
				if (idx < len - 1)
				{
					for (int i = idx + 1; i < len; i++)
					{
						if (values[i] == values[idx])
						{
							return true;
						}
					}
					return contains(++idx);
				}
				return false;
			};
			return contains(0);
		}

		internal static T[] Copy<T>(this T[] source, int length)
		{
			T[] array = new T[length];
			Array.Copy(source, 0, array, 0, length);
			return array;
		}

		internal static T[] Copy<T>(this T[] source, long length)
		{
			T[] array = new T[length];
			Array.Copy(source, 0L, array, 0L, length);
			return array;
		}

		internal static void CopyTo(this Stream source, Stream destination, int bufferLength)
		{
			byte[] buffer = new byte[bufferLength];
			int num = 0;
			while ((num = source.Read(buffer, 0, bufferLength)) > 0)
			{
				destination.Write(buffer, 0, num);
			}
		}

		internal static void CopyToAsync(this Stream source, Stream destination, int bufferLength, Action completed, Action<Exception> error)
		{
			byte[] buff = new byte[bufferLength];
			AsyncCallback callback = null;
			callback = delegate(IAsyncResult ar)
			{
				try
				{
					int num = source.EndRead(ar);
					if (num <= 0)
					{
						if (completed != null)
						{
							completed();
						}
					}
					else
					{
						destination.Write(buff, 0, num);
						source.BeginRead(buff, 0, bufferLength, callback, null);
					}
				}
				catch (Exception obj2)
				{
					if (error != null)
					{
						error(obj2);
					}
				}
			};
			try
			{
				source.BeginRead(buff, 0, bufferLength, callback, null);
			}
			catch (Exception obj)
			{
				if (error != null)
				{
					error(obj);
				}
			}
		}

		internal static byte[] Decompress(this byte[] data, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? data.decompress() : data;
		}

		internal static Stream Decompress(this Stream stream, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? stream.decompress() : stream;
		}

		internal static byte[] DecompressToArray(this Stream stream, CompressionMethod method)
		{
			return (method == CompressionMethod.Deflate) ? stream.decompressToArray() : stream.ToByteArray();
		}

		internal static bool EqualsWith(this int value, char c, Action<int> action)
		{
			action(value);
			return value == c;
		}

		internal static string GetAbsolutePath(this Uri uri)
		{
			if (uri.IsAbsoluteUri)
			{
				return uri.AbsolutePath;
			}
			string originalString = uri.OriginalString;
			if (originalString[0] != '/')
			{
				return null;
			}
			int num = originalString.IndexOfAny(new char[2] { '?', '#' });
			return (num > 0) ? originalString.Substring(0, num) : originalString;
		}

		internal static string GetMessage(this CloseStatusCode code)
		{
			return code switch
			{
				CloseStatusCode.TlsHandshakeFailure => "An error has occurred during a TLS handshake.", 
				CloseStatusCode.ServerError => "WebSocket server got an internal error.", 
				CloseStatusCode.MandatoryExtension => "WebSocket client didn't receive expected extension(s).", 
				CloseStatusCode.TooBig => "A too big message has been received.", 
				CloseStatusCode.PolicyViolation => "A policy violation has occurred.", 
				CloseStatusCode.InvalidData => "Invalid data has been received.", 
				CloseStatusCode.Abnormal => "An exception has occurred.", 
				CloseStatusCode.UnsupportedData => "Unsupported data has been received.", 
				CloseStatusCode.ProtocolError => "A WebSocket protocol error has occurred.", 
				_ => string.Empty, 
			};
		}

		internal static string GetName(this string nameAndValue, char separator)
		{
			int num = nameAndValue.IndexOf(separator);
			return (num > 0) ? nameAndValue.Substring(0, num).Trim() : null;
		}

		internal static string GetValue(this string nameAndValue, char separator)
		{
			int num = nameAndValue.IndexOf(separator);
			return (num > -1 && num < nameAndValue.Length - 1) ? nameAndValue.Substring(num + 1).Trim() : null;
		}

		internal static string GetValue(this string nameAndValue, char separator, bool unquote)
		{
			int num = nameAndValue.IndexOf(separator);
			if (num < 0 || num == nameAndValue.Length - 1)
			{
				return null;
			}
			string text = nameAndValue.Substring(num + 1).Trim();
			return unquote ? text.Unquote() : text;
		}

		internal static TcpListenerWebSocketContext GetWebSocketContext(this TcpClient tcpClient, string protocol, bool secure, ServerSslConfiguration sslConfig, Logger logger)
		{
			return new TcpListenerWebSocketContext(tcpClient, protocol, secure, sslConfig, logger);
		}

		internal static byte[] InternalToByteArray(this ushort value, ByteOrder order)
		{
			byte[] bytes = BitConverter.GetBytes(value);
			if (!order.IsHostOrder())
			{
				Array.Reverse((Array)bytes);
			}
			return bytes;
		}

		internal static byte[] InternalToByteArray(this ulong value, ByteOrder order)
		{
			byte[] bytes = BitConverter.GetBytes(value);
			if (!order.IsHostOrder())
			{
				Array.Reverse((Array)bytes);
			}
			return bytes;
		}

		internal static bool IsCompressionExtension(this string value, CompressionMethod method)
		{
			return value.StartsWith(method.ToExtensionString());
		}

		internal static bool IsControl(this byte opcode)
		{
			return opcode > 7 && opcode < 16;
		}

		internal static bool IsControl(this Opcode opcode)
		{
			return (int)opcode >= 8;
		}

		internal static bool IsData(this byte opcode)
		{
			return opcode == 1 || opcode == 2;
		}

		internal static bool IsData(this Opcode opcode)
		{
			return opcode == Opcode.Text || opcode == Opcode.Binary;
		}

		internal static bool IsPortNumber(this int value)
		{
			return value > 0 && value < 65536;
		}

		internal static bool IsReserved(this ushort code)
		{
			return code == 1004 || code == 1005 || code == 1006 || code == 1015;
		}

		internal static bool IsReserved(this CloseStatusCode code)
		{
			return code == CloseStatusCode.Undefined || code == CloseStatusCode.NoStatus || code == CloseStatusCode.Abnormal || code == CloseStatusCode.TlsHandshakeFailure;
		}

		internal static bool IsSupported(this byte opcode)
		{
			return Enum.IsDefined(typeof(Opcode), opcode);
		}

		internal static bool IsText(this string value)
		{
			int length = value.Length;
			for (int i = 0; i < length; i++)
			{
				char c = value[i];
				if (c < ' ' && !Contains("\r\n\t", c))
				{
					return false;
				}
				switch (c)
				{
				case '\u007f':
					return false;
				case '\n':
					if (++i < length)
					{
						c = value[i];
						if (!Contains(" \t", c))
						{
							return false;
						}
					}
					break;
				}
			}
			return true;
		}

		internal static bool IsToken(this string value)
		{
			foreach (char c in value)
			{
				if (c < ' ' || c >= '\u007f' || Contains("()<>@,;:\\\"/[]?={} \t", c))
				{
					return false;
				}
			}
			return true;
		}

		internal static string Quote(this string value)
		{
			return string.Format("\"{0}\"", value.Replace("\"", "\\\""));
		}

		internal static byte[] ReadBytes(this Stream stream, int length)
		{
			byte[] array = new byte[length];
			int num = 0;
			try
			{
				int num2 = 0;
				while (length > 0)
				{
					num2 = stream.Read(array, num, length);
					if (num2 == 0)
					{
						break;
					}
					num += num2;
					length -= num2;
				}
			}
			catch
			{
			}
			return array.SubArray(0, num);
		}

		internal static byte[] ReadBytes(this Stream stream, long length, int bufferLength)
		{
			using MemoryStream memoryStream = new MemoryStream();
			try
			{
				byte[] buffer = new byte[bufferLength];
				int num = 0;
				while (length > 0)
				{
					if (length < bufferLength)
					{
						bufferLength = (int)length;
					}
					num = stream.Read(buffer, 0, bufferLength);
					if (num == 0)
					{
						break;
					}
					memoryStream.Write(buffer, 0, num);
					length -= num;
				}
			}
			catch
			{
			}
			memoryStream.Close();
			return memoryStream.ToArray();
		}

		internal static void ReadBytesAsync(this Stream stream, int length, Action<byte[]> completed, Action<Exception> error)
		{
			byte[] buff = new byte[length];
			int offset = 0;
			int retry = 0;
			AsyncCallback callback = null;
			callback = delegate(IAsyncResult ar)
			{
				try
				{
					int num = stream.EndRead(ar);
					if (num == 0 && retry < _retry)
					{
						retry++;
						stream.BeginRead(buff, offset, length, callback, null);
					}
					else if (num == 0 || num == length)
					{
						if (completed != null)
						{
							completed(buff.SubArray(0, offset + num));
						}
					}
					else
					{
						retry = 0;
						offset += num;
						length -= num;
						stream.BeginRead(buff, offset, length, callback, null);
					}
				}
				catch (Exception obj2)
				{
					if (error != null)
					{
						error(obj2);
					}
				}
			};
			try
			{
				stream.BeginRead(buff, offset, length, callback, null);
			}
			catch (Exception obj)
			{
				if (error != null)
				{
					error(obj);
				}
			}
		}

		internal static void ReadBytesAsync(this Stream stream, long length, int bufferLength, Action<byte[]> completed, Action<Exception> error)
		{
			MemoryStream dest = new MemoryStream();
			byte[] buff = new byte[bufferLength];
			int retry = 0;
			Action<long> read = null;
			read = delegate(long len)
			{
				if (len < bufferLength)
				{
					bufferLength = (int)len;
				}
				stream.BeginRead(buff, 0, bufferLength, delegate(IAsyncResult ar)
				{
					try
					{
						int num = stream.EndRead(ar);
						if (num > 0)
						{
							dest.Write(buff, 0, num);
						}
						if (num == 0 && retry < _retry)
						{
							int num2 = retry;
							retry = num2 + 1;
							read(len);
						}
						else if (num == 0 || num == len)
						{
							if (completed != null)
							{
								dest.Close();
								completed(dest.ToArray());
							}
							dest.Dispose();
						}
						else
						{
							retry = 0;
							read(len - num);
						}
					}
					catch (Exception obj2)
					{
						dest.Dispose();
						if (error != null)
						{
							error(obj2);
						}
					}
				}, null);
			};
			try
			{
				read(length);
			}
			catch (Exception obj)
			{
				dest.Dispose();
				if (error != null)
				{
					error(obj);
				}
			}
		}

		internal static string RemovePrefix(this string value, params string[] prefixes)
		{
			int num = 0;
			foreach (string text in prefixes)
			{
				if (value.StartsWith(text))
				{
					num = text.Length;
					break;
				}
			}
			return (num > 0) ? value.Substring(num) : value;
		}

		internal static T[] Reverse<T>(this T[] array)
		{
			int num = array.Length;
			T[] array2 = new T[num];
			int num2 = num - 1;
			for (int i = 0; i <= num2; i++)
			{
				array2[i] = array[num2 - i];
			}
			return array2;
		}

		internal static IEnumerable<string> SplitHeaderValue(this string value, params char[] separators)
		{
			int len = value.Length;
			string seps = new string(separators);
			StringBuilder buff = new StringBuilder(32);
			bool escaped = false;
			bool quoted = false;
			for (int i = 0; i < len; i++)
			{
				char c = value[i];
				switch (c)
				{
				case '"':
					if (escaped)
					{
						escaped = !escaped;
					}
					else
					{
						quoted = !quoted;
					}
					break;
				case '\\':
					if (i < len - 1 && value[i + 1] == '"')
					{
						escaped = true;
					}
					break;
				default:
					if (Contains(seps, c) && !quoted)
					{
						yield return buff.ToString();
						buff.Length = 0;
						continue;
					}
					break;
				}
				buff.Append(c);
			}
			if (buff.Length > 0)
			{
				yield return buff.ToString();
			}
		}

		internal static byte[] ToByteArray(this Stream stream)
		{
			using MemoryStream memoryStream = new MemoryStream();
			stream.Position = 0L;
			CopyTo(stream, memoryStream, 1024);
			memoryStream.Close();
			return memoryStream.ToArray();
		}

		internal static CompressionMethod ToCompressionMethod(this string value)
		{
			foreach (CompressionMethod value2 in Enum.GetValues(typeof(CompressionMethod)))
			{
				if (value2.ToExtensionString() == value)
				{
					return value2;
				}
			}
			return CompressionMethod.None;
		}

		internal static string ToExtensionString(this CompressionMethod method, params string[] parameters)
		{
			if (method == CompressionMethod.None)
			{
				return string.Empty;
			}
			string text = $"permessage-{method.ToString().ToLower()}";
			if (parameters == null || parameters.Length == 0)
			{
				return text;
			}
			return string.Format("{0}; {1}", text, parameters.ToString("; "));
		}

		internal static IPAddress ToIPAddress(this string value)
		{
			if (value == null || value.Length == 0)
			{
				return null;
			}
			if (IPAddress.TryParse(value, out IPAddress address))
			{
				return address;
			}
			try
			{
				IPAddress[] hostAddresses = Dns.GetHostAddresses(value);
				return hostAddresses[0];
			}
			catch
			{
				return null;
			}
		}

		internal static List<TSource> ToList<TSource>(this IEnumerable<TSource> source)
		{
			return new List<TSource>(source);
		}

		internal static ushort ToUInt16(this byte[] source, ByteOrder sourceOrder)
		{
			return BitConverter.ToUInt16(source.ToHostOrder(sourceOrder), 0);
		}

		internal static ulong ToUInt64(this byte[] source, ByteOrder sourceOrder)
		{
			return BitConverter.ToUInt64(source.ToHostOrder(sourceOrder), 0);
		}

		internal static string TrimSlashFromEnd(this string value)
		{
			string text = value.TrimEnd(new char[1] { '/' });
			return (text.Length > 0) ? text : "/";
		}

		internal static bool TryCreateWebSocketUri(this string uriString, out Uri result, out string message)
		{
			result = null;
			message = null;
			Uri uri = uriString.ToUri();
			if (uri == null)
			{
				message = "An invalid URI string.";
				return false;
			}
			if (!uri.IsAbsoluteUri)
			{
				message = "A relative URI.";
				return false;
			}
			string scheme = uri.Scheme;
			if (!(scheme == "ws") && !(scheme == "wss"))
			{
				message = "The scheme part is not 'ws' or 'wss'.";
				return false;
			}
			int port = uri.Port;
			if (port == 0)
			{
				message = "The port part is zero.";
				return false;
			}
			if (uri.Fragment.Length > 0)
			{
				message = "It includes the fragment component.";
				return false;
			}
			result = ((port != -1) ? uri : new Uri(string.Format("{0}://{1}:{2}{3}", scheme, uri.Host, (scheme == "ws") ? 80 : 443, uri.PathAndQuery)));
			return true;
		}

		internal static bool TryGetUTF8DecodedString(this byte[] bytes, out string s)
		{
			s = null;
			try
			{
				s = Encoding.UTF8.GetString(bytes);
			}
			catch
			{
				return false;
			}
			return true;
		}

		internal static bool TryGetUTF8EncodedBytes(this string s, out byte[] bytes)
		{
			bytes = null;
			try
			{
				bytes = Encoding.UTF8.GetBytes(s);
			}
			catch
			{
				return false;
			}
			return true;
		}

		internal static bool TryOpenRead(this FileInfo fileInfo, out FileStream fileStream)
		{
			fileStream = null;
			try
			{
				fileStream = fileInfo.OpenRead();
			}
			catch
			{
				return false;
			}
			return true;
		}

		internal static string Unquote(this string value)
		{
			int num = value.IndexOf('"');
			if (num < 0)
			{
				return value;
			}
			int num2 = value.LastIndexOf('"');
			int num3 = num2 - num - 1;
			return (num3 < 0) ? value : ((num3 == 0) ? string.Empty : value.Substring(num + 1, num3).Replace("\\\"", "\""));
		}

		internal static string UTF8Decode(this byte[] bytes)
		{
			try
			{
				return Encoding.UTF8.GetString(bytes);
			}
			catch
			{
				return null;
			}
		}

		internal static byte[] UTF8Encode(this string s)
		{
			return Encoding.UTF8.GetBytes(s);
		}

		internal static void WriteBytes(this Stream stream, byte[] bytes, int bufferLength)
		{
			using MemoryStream source = new MemoryStream(bytes);
			CopyTo(source, stream, bufferLength);
		}

		internal static void WriteBytesAsync(this Stream stream, byte[] bytes, int bufferLength, Action completed, Action<Exception> error)
		{
			MemoryStream input = new MemoryStream(bytes);
			input.CopyToAsync(stream, bufferLength, delegate
			{
				if (completed != null)
				{
					completed();
				}
				input.Dispose();
			}, delegate(Exception ex)
			{
				input.Dispose();
				if (error != null)
				{
					error(ex);
				}
			});
		}

		public static bool Contains(this string value, params char[] chars)
		{
			return chars == null || chars.Length == 0 || (value != null && value.Length != 0 && value.IndexOfAny(chars) > -1);
		}

		public static bool Contains(this NameValueCollection collection, string name)
		{
			return collection != null && collection.Count > 0 && collection[name] != null;
		}

		public static bool Contains(this NameValueCollection collection, string name, string value)
		{
			if (collection == null || collection.Count == 0)
			{
				return false;
			}
			string text = collection[name];
			if (text == null)
			{
				return false;
			}
			string[] array = text.Split(new char[1] { ',' });
			foreach (string text2 in array)
			{
				if (text2.Trim().Equals(value, StringComparison.OrdinalIgnoreCase))
				{
					return true;
				}
			}
			return false;
		}

		public static void Emit(this EventHandler eventHandler, object sender, EventArgs e)
		{
			eventHandler?.Invoke(sender, e);
		}

		public static void Emit<TEventArgs>(this EventHandler<TEventArgs> eventHandler, object sender, TEventArgs e) where TEventArgs : EventArgs
		{
			eventHandler?.Invoke(sender, e);
		}

		public static WebSocketSharp.Net.CookieCollection GetCookies(this NameValueCollection headers, bool response)
		{
			string name = (response ? "Set-Cookie" : "Cookie");
			return (headers != null && headers.Contains(name)) ? WebSocketSharp.Net.CookieCollection.Parse(headers[name], response) : new WebSocketSharp.Net.CookieCollection();
		}

		public static string GetDescription(this WebSocketSharp.Net.HttpStatusCode code)
		{
			return ((int)code).GetStatusDescription();
		}

		public static string GetStatusDescription(this int code)
		{
			return code switch
			{
				100 => "Continue", 
				101 => "Switching Protocols", 
				102 => "Processing", 
				200 => "OK", 
				201 => "Created", 
				202 => "Accepted", 
				203 => "Non-Authoritative Information", 
				204 => "No Content", 
				205 => "Reset Content", 
				206 => "Partial Content", 
				207 => "Multi-Status", 
				300 => "Multiple Choices", 
				301 => "Moved Permanently", 
				302 => "Found", 
				303 => "See Other", 
				304 => "Not Modified", 
				305 => "Use Proxy", 
				307 => "Temporary Redirect", 
				400 => "Bad Request", 
				401 => "Unauthorized", 
				402 => "Payment Required", 
				403 => "Forbidden", 
				404 => "Not Found", 
				405 => "Method Not Allowed", 
				406 => "Not Acceptable", 
				407 => "Proxy Authentication Required", 
				408 => "Request Timeout", 
				409 => "Conflict", 
				410 => "Gone", 
				411 => "Length Required", 
				412 => "Precondition Failed", 
				413 => "Request Entity Too Large", 
				414 => "Request-Uri Too Long", 
				415 => "Unsupported Media Type", 
				416 => "Requested Range Not Satisfiable", 
				417 => "Expectation Failed", 
				422 => "Unprocessable Entity", 
				423 => "Locked", 
				424 => "Failed Dependency", 
				500 => "Internal Server Error", 
				501 => "Not Implemented", 
				502 => "Bad Gateway", 
				503 => "Service Unavailable", 
				504 => "Gateway Timeout", 
				505 => "Http Version Not Supported", 
				507 => "Insufficient Storage", 
				_ => string.Empty, 
			};
		}

		public static bool IsCloseStatusCode(this ushort value)
		{
			return value > 999 && value < 5000;
		}

		public static bool IsEnclosedIn(this string value, char c)
		{
			return value != null && value.Length > 1 && value[0] == c && value[value.Length - 1] == c;
		}

		public static bool IsHostOrder(this ByteOrder order)
		{
			return BitConverter.IsLittleEndian == (order == ByteOrder.Little);
		}

		public static bool IsLocal(this IPAddress address)
		{
			if (address == null)
			{
				return false;
			}
			if (address.Equals(IPAddress.Any))
			{
				return true;
			}
			if (address.Equals(IPAddress.Loopback))
			{
				return true;
			}
			if (Socket.OSSupportsIPv6)
			{
				if (address.Equals(IPAddress.IPv6Any))
				{
					return true;
				}
				if (address.Equals(IPAddress.IPv6Loopback))
				{
					return true;
				}
			}
			string hostName = Dns.GetHostName();
			IPAddress[] hostAddresses = Dns.GetHostAddresses(hostName);
			IPAddress[] array = hostAddresses;
			foreach (IPAddress obj in array)
			{
				if (address.Equals(obj))
				{
					return true;
				}
			}
			return false;
		}

		public static bool IsNullOrEmpty(this string value)
		{
			return value == null || value.Length == 0;
		}

		public static bool IsPredefinedScheme(this string value)
		{
			if (value == null || value.Length < 2)
			{
				return false;
			}
			switch (value[0])
			{
			case 'h':
				return value == "http" || value == "https";
			case 'w':
				return value == "ws" || value == "wss";
			case 'f':
				return value == "file" || value == "ftp";
			case 'g':
				return value == "gopher";
			case 'm':
				return value == "mailto";
			case 'n':
			{
				char c = value[1];
				return (c != 'e') ? (value == "nntp") : (value == "news" || value == "net.pipe" || value == "net.tcp");
			}
			default:
				return false;
			}
		}

		public static bool IsUpgradeTo(this WebSocketSharp.Net.HttpListenerRequest request, string protocol)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			if (protocol == null)
			{
				throw new ArgumentNullException("protocol");
			}
			if (protocol.Length == 0)
			{
				throw new ArgumentException("An empty string.", "protocol");
			}
			return request.Headers.Contains("Upgrade", protocol) && request.Headers.Contains("Connection", "Upgrade");
		}

		public static bool MaybeUri(this string value)
		{
			if (value == null || value.Length == 0)
			{
				return false;
			}
			int num = value.IndexOf(':');
			if (num == -1)
			{
				return false;
			}
			if (num >= 10)
			{
				return false;
			}
			string value2 = value.Substring(0, num);
			return value2.IsPredefinedScheme();
		}

		public static T[] SubArray<T>(this T[] array, int startIndex, int length)
		{
			int num;
			if (array == null || (num = array.Length) == 0)
			{
				return new T[0];
			}
			if (startIndex < 0 || length <= 0 || startIndex + length > num)
			{
				return new T[0];
			}
			if (startIndex == 0 && length == num)
			{
				return array;
			}
			T[] array2 = new T[length];
			Array.Copy(array, startIndex, array2, 0, length);
			return array2;
		}

		public static T[] SubArray<T>(this T[] array, long startIndex, long length)
		{
			long num;
			if (array == null || (num = array.LongLength) == 0)
			{
				return new T[0];
			}
			if (startIndex < 0 || length <= 0 || startIndex + length > num)
			{
				return new T[0];
			}
			if (startIndex == 0L && length == num)
			{
				return array;
			}
			T[] array2 = new T[length];
			Array.Copy(array, startIndex, array2, 0L, length);
			return array2;
		}

		public static void Times(this int n, Action action)
		{
			if (n > 0 && action != null)
			{
				((ulong)n).times(action);
			}
		}

		public static void Times(this long n, Action action)
		{
			if (n > 0 && action != null)
			{
				((ulong)n).times(action);
			}
		}

		public static void Times(this uint n, Action action)
		{
			if (n != 0 && action != null)
			{
				times(n, action);
			}
		}

		public static void Times(this ulong n, Action action)
		{
			if (n != 0 && action != null)
			{
				n.times(action);
			}
		}

		public static void Times(this int n, Action<int> action)
		{
			if (n > 0 && action != null)
			{
				for (int i = 0; i < n; i++)
				{
					action(i);
				}
			}
		}

		public static void Times(this long n, Action<long> action)
		{
			if (n > 0 && action != null)
			{
				for (long num = 0L; num < n; num++)
				{
					action(num);
				}
			}
		}

		public static void Times(this uint n, Action<uint> action)
		{
			if (n != 0 && action != null)
			{
				for (uint num = 0u; num < n; num++)
				{
					action(num);
				}
			}
		}

		public static void Times(this ulong n, Action<ulong> action)
		{
			if (n != 0 && action != null)
			{
				for (ulong num = 0uL; num < n; num++)
				{
					action(num);
				}
			}
		}

		public static T To<T>(this byte[] source, ByteOrder sourceOrder) where T : struct
		{
			if (source == null)
			{
				throw new ArgumentNullException("source");
			}
			if (source.Length == 0)
			{
				return default(T);
			}
			Type typeFromHandle = typeof(T);
			byte[] value = source.ToHostOrder(sourceOrder);
			return ((object)typeFromHandle == typeof(bool)) ? ((T)(object)BitConverter.ToBoolean(value, 0)) : (((object)typeFromHandle == typeof(char)) ? ((T)(object)BitConverter.ToChar(value, 0)) : (((object)typeFromHandle == typeof(double)) ? ((T)(object)BitConverter.ToDouble(value, 0)) : (((object)typeFromHandle == typeof(short)) ? ((T)(object)BitConverter.ToInt16(value, 0)) : (((object)typeFromHandle == typeof(int)) ? ((T)(object)BitConverter.ToInt32(value, 0)) : (((object)typeFromHandle == typeof(long)) ? ((T)(object)BitConverter.ToInt64(value, 0)) : (((object)typeFromHandle == typeof(float)) ? ((T)(object)BitConverter.ToSingle(value, 0)) : (((object)typeFromHandle == typeof(ushort)) ? ((T)(object)BitConverter.ToUInt16(value, 0)) : (((object)typeFromHandle == typeof(uint)) ? ((T)(object)BitConverter.ToUInt32(value, 0)) : (((object)typeFromHandle == typeof(ulong)) ? ((T)(object)BitConverter.ToUInt64(value, 0)) : default(T))))))))));
		}

		public static byte[] ToByteArray<T>(this T value, ByteOrder order) where T : struct
		{
			Type typeFromHandle = typeof(T);
			byte[] array = (((object)typeFromHandle == typeof(bool)) ? BitConverter.GetBytes((bool)(object)value) : (((object)typeFromHandle != typeof(byte)) ? (((object)typeFromHandle == typeof(char)) ? BitConverter.GetBytes((char)(object)value) : (((object)typeFromHandle == typeof(double)) ? BitConverter.GetBytes((double)(object)value) : (((object)typeFromHandle == typeof(short)) ? BitConverter.GetBytes((short)(object)value) : (((object)typeFromHandle == typeof(int)) ? BitConverter.GetBytes((int)(object)value) : (((object)typeFromHandle == typeof(long)) ? BitConverter.GetBytes((long)(object)value) : (((object)typeFromHandle == typeof(float)) ? BitConverter.GetBytes((float)(object)value) : (((object)typeFromHandle == typeof(ushort)) ? BitConverter.GetBytes((ushort)(object)value) : (((object)typeFromHandle == typeof(uint)) ? BitConverter.GetBytes((uint)(object)value) : (((object)typeFromHandle == typeof(ulong)) ? BitConverter.GetBytes((ulong)(object)value) : WebSocket.EmptyBytes))))))))) : new byte[1] { (byte)(object)value }));
			if (array.Length > 1 && !order.IsHostOrder())
			{
				Array.Reverse((Array)array);
			}
			return array;
		}

		public static byte[] ToHostOrder(this byte[] source, ByteOrder sourceOrder)
		{
			if (source == null)
			{
				throw new ArgumentNullException("source");
			}
			return (source.Length > 1 && !sourceOrder.IsHostOrder()) ? source.Reverse() : source;
		}

		public static string ToString<T>(this T[] array, string separator)
		{
			if (array == null)
			{
				throw new ArgumentNullException("array");
			}
			int num = array.Length;
			if (num == 0)
			{
				return string.Empty;
			}
			if (separator == null)
			{
				separator = string.Empty;
			}
			StringBuilder buff = new StringBuilder(64);
			(num - 1).Times(delegate(int i)
			{
				buff.AppendFormat("{0}{1}", array[i].ToString(), separator);
			});
			buff.Append(array[num - 1].ToString());
			return buff.ToString();
		}

		public static Uri ToUri(this string value)
		{
			Uri.TryCreate(value, value.MaybeUri() ? UriKind.Absolute : UriKind.Relative, out Uri result);
			return result;
		}

		public static string UrlDecode(this string value)
		{
			return (value != null && value.Length > 0) ? HttpUtility.UrlDecode(value) : value;
		}

		public static string UrlEncode(this string value)
		{
			return (value != null && value.Length > 0) ? HttpUtility.UrlEncode(value) : value;
		}

		public static void WriteContent(this WebSocketSharp.Net.HttpListenerResponse response, byte[] content)
		{
			if (response == null)
			{
				throw new ArgumentNullException("response");
			}
			if (content == null)
			{
				throw new ArgumentNullException("content");
			}
			long num = content.LongLength;
			if (num == 0)
			{
				response.Close();
				return;
			}
			response.ContentLength64 = num;
			Stream outputStream = response.OutputStream;
			if (num <= int.MaxValue)
			{
				outputStream.Write(content, 0, (int)num);
			}
			else
			{
				outputStream.WriteBytes(content, 1024);
			}
			outputStream.Close();
		}
	}
	public class MessageEventArgs : EventArgs
	{
		private string _data;

		private bool _dataSet;

		private Opcode _opcode;

		private byte[] _rawData;

		internal Opcode Opcode => _opcode;

		public string Data
		{
			get
			{
				setData();
				return _data;
			}
		}

		public bool IsBinary => _opcode == Opcode.Binary;

		public bool IsPing => _opcode == Opcode.Ping;

		public bool IsText => _opcode == Opcode.Text;

		public byte[] RawData
		{
			get
			{
				setData();
				return _rawData;
			}
		}

		internal MessageEventArgs(WebSocketFrame frame)
		{
			_opcode = frame.Opcode;
			_rawData = frame.PayloadData.ApplicationData;
		}

		internal MessageEventArgs(Opcode opcode, byte[] rawData)
		{
			if ((ulong)rawData.LongLength > PayloadData.MaxLength)
			{
				throw new WebSocketException(CloseStatusCode.TooBig);
			}
			_opcode = opcode;
			_rawData = rawData;
		}

		private void setData()
		{
			if (!_dataSet)
			{
				if (_opcode == Opcode.Binary)
				{
					_dataSet = true;
					return;
				}
				_data = _rawData.UTF8Decode();
				_dataSet = true;
			}
		}
	}
	public class CloseEventArgs : EventArgs
	{
		private bool _clean;

		private PayloadData _payloadData;

		internal PayloadData PayloadData => _payloadData;

		public ushort Code => _payloadData.Code;

		public string Reason => _payloadData.Reason ?? string.Empty;

		public bool WasClean
		{
			get
			{
				return _clean;
			}
			internal set
			{
				_clean = value;
			}
		}

		internal CloseEventArgs()
		{
			_payloadData = PayloadData.Empty;
		}

		internal CloseEventArgs(ushort code)
			: this(code, null)
		{
		}

		internal CloseEventArgs(CloseStatusCode code)
			: this((ushort)code, null)
		{
		}

		internal CloseEventArgs(PayloadData payloadData)
		{
			_payloadData = payloadData;
		}

		internal CloseEventArgs(ushort code, string reason)
		{
			_payloadData = new PayloadData(code, reason);
		}

		internal CloseEventArgs(CloseStatusCode code, string reason)
			: this((ushort)code, reason)
		{
		}
	}
	public enum ByteOrder
	{
		Little,
		Big
	}
	public class ErrorEventArgs : EventArgs
	{
		private Exception _exception;

		private string _message;

		public Exception Exception => _exception;

		public string Message => _message;

		internal ErrorEventArgs(string message)
			: this(message, null)
		{
		}

		internal ErrorEventArgs(string message, Exception exception)
		{
			_message = message;
			_exception = exception;
		}
	}
	public class WebSocket : IDisposable
	{
		private AuthenticationChallenge _authChallenge;

		private string _base64Key;

		private bool _client;

		private Action _closeContext;

		private CompressionMethod _compression;

		private WebSocketContext _context;

		private WebSocketSharp.Net.CookieCollection _cookies;

		private WebSocketSharp.Net.NetworkCredential _credentials;

		private bool _emitOnPing;

		private bool _enableRedirection;

		private string _extensions;

		private bool _extensionsRequested;

		private object _forMessageEventQueue;

		private object _forPing;

		private object _forSend;

		private object _forState;

		private MemoryStream _fragmentsBuffer;

		private bool _fragmentsCompressed;

		private Opcode _fragmentsOpcode;

		private const string _guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";

		private Func<WebSocketContext, string> _handshakeRequestChecker;

		private bool _ignoreExtensions;

		private bool _inContinuation;

		private volatile bool _inMessage;

		private volatile Logger _logger;

		private static readonly int _maxRetryCountForConnect;

		private Action<MessageEventArgs> _message;

		private Queue<MessageEventArgs> _messageEventQueue;

		private uint _nonceCount;

		private string _origin;

		private ManualResetEvent _pongReceived;

		private bool _preAuth;

		private string _protocol;

		private string[] _protocols;

		private bool _protocolsRequested;

		private WebSocketSharp.Net.NetworkCredential _proxyCredentials;

		private Uri _proxyUri;

		private volatile WebSocketState _readyState;

		private ManualResetEvent _receivingExited;

		private int _retryCountForConnect;

		private bool _secure;

		private ClientSslConfiguration _sslConfig;

		private Stream _stream;

		private TcpClient _tcpClient;

		private Uri _uri;

		private const string _version = "13";

		private TimeSpan _waitTime;

		internal static readonly byte[] EmptyBytes;

		internal static readonly int FragmentLength;

		internal static readonly RandomNumberGenerator RandomNumber;

		internal WebSocketSharp.Net.CookieCollection CookieCollection => _cookies;

		internal Func<WebSocketContext, string> CustomHandshakeRequestChecker
		{
			get
			{
				return _handshakeRequestChecker;
			}
			set
			{
				_handshakeRequestChecker = value;
			}
		}

		internal bool HasMessage
		{
			get
			{
				lock (_forMessageEventQueue)
				{
					return _messageEventQueue.Count > 0;
				}
			}
		}

		internal bool IgnoreExtensions
		{
			get
			{
				return _ignoreExtensions;
			}
			set
			{
				_ignoreExtensions = value;
			}
		}

		internal bool IsConnected => _readyState == WebSocketState.Open || _readyState == WebSocketState.Closing;

		public IEnumerable<KeyValuePair<string, string>> CustomHeaders { get; set; }

		public CompressionMethod Compression
		{
			get
			{
				return _compression;
			}
			set
			{
				if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
				{
					_logger.Error(text);
					error("An error has occurred in setting the compression.", null);
					return;
				}
				lock (_forState)
				{
					if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: true, out text))
					{
						_logger.Error(text);
						error("An error has occurred in setting the compression.", null);
					}
					else
					{
						_compression = value;
					}
				}
			}
		}

		public IEnumerable<WebSocketSharp.Net.Cookie> Cookies
		{
			get
			{
				lock (_cookies.SyncRoot)
				{
					foreach (WebSocketSharp.Net.Cookie cookie in _cookies)
					{
						yield return cookie;
					}
				}
			}
		}

		public WebSocketSharp.Net.NetworkCredential Credentials => _credentials;

		public bool EmitOnPing
		{
			get
			{
				return _emitOnPing;
			}
			set
			{
				_emitOnPing = value;
			}
		}

		public bool EnableRedirection
		{
			get
			{
				return _enableRedirection;
			}
			set
			{
				lock (_forState)
				{
					if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
					{
						_logger.Error(text);
						error("An error has occurred in setting the enable redirection.", null);
					}
					else
					{
						_enableRedirection = value;
					}
				}
			}
		}

		public string Extensions => _extensions ?? string.Empty;

		public bool IsAlive => ping(EmptyBytes);

		public bool IsSecure => _secure;

		public Logger Log
		{
			get
			{
				return _logger;
			}
			internal set
			{
				_logger = value;
			}
		}

		public string Origin
		{
			get
			{
				return _origin;
			}
			set
			{
				lock (_forState)
				{
					Uri result;
					if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
					{
						_logger.Error(text);
						error("An error has occurred in setting the origin.", null);
					}
					else if (value.IsNullOrEmpty())
					{
						_origin = value;
					}
					else if (!Uri.TryCreate(value, UriKind.Absolute, out result) || result.Segments.Length > 1)
					{
						_logger.Error("The syntax of an origin must be '<scheme>://<host>[:<port>]'.");
						error("An error has occurred in setting the origin.", null);
					}
					else
					{
						_origin = value.TrimEnd(new char[1] { '/' });
					}
				}
			}
		}

		public string Protocol
		{
			get
			{
				return _protocol ?? string.Empty;
			}
			internal set
			{
				_protocol = value;
			}
		}

		public WebSocketState ReadyState => _readyState;

		public ClientSslConfiguration SslConfiguration
		{
			get
			{
				return _client ? (_sslConfig ?? (_sslConfig = new ClientSslConfiguration(_uri.DnsSafeHost))) : null;
			}
			set
			{
				lock (_forState)
				{
					if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
					{
						_logger.Error(text);
						error("An error has occurred in setting the ssl configuration.", null);
					}
					else
					{
						_sslConfig = value;
					}
				}
			}
		}

		public Uri Url => _client ? _uri : _context.RequestUri;

		public TimeSpan WaitTime
		{
			get
			{
				return _waitTime;
			}
			set
			{
				lock (_forState)
				{
					if (!checkIfAvailable(client: true, server: true, connecting: true, open: false, closing: false, closed: true, out var text) || !value.CheckWaitTime(out text))
					{
						_logger.Error(text);
						error("An error has occurred in setting the wait time.", null);
					}
					else
					{
						_waitTime = value;
					}
				}
			}
		}

		public event EventHandler<CloseEventArgs> OnClose;

		public event EventHandler<ErrorEventArgs> OnError;

		public event EventHandler<MessageEventArgs> OnMessage;

		public event EventHandler OnOpen;

		static WebSocket()
		{
			_maxRetryCountForConnect = 10;
			EmptyBytes = new byte[0];
			FragmentLength = 1016;
			RandomNumber = new RNGCryptoServiceProvider();
		}

		internal WebSocket(HttpListenerWebSocketContext context, string protocol)
		{
			_context = context;
			_protocol = protocol;
			_closeContext = context.Close;
			_logger = context.Log;
			_message = messages;
			_secure = context.IsSecureConnection;
			_stream = context.Stream;
			_waitTime = TimeSpan.FromSeconds(1.0);
			init();
		}

		internal WebSocket(TcpListenerWebSocketContext context, string protocol)
		{
			_context = context;
			_protocol = protocol;
			_closeContext = context.Close;
			_logger = context.Log;
			_message = messages;
			_secure = context.IsSecureConnection;
			_stream = context.Stream;
			_waitTime = TimeSpan.FromSeconds(1.0);
			init();
		}

		public WebSocket(string url, params string[] protocols)
		{
			if (url == null)
			{
				throw new ArgumentNullException("url");
			}
			if (url.Length == 0)
			{
				throw new ArgumentException("An empty string.", "url");
			}
			if (!url.TryCreateWebSocketUri(out _uri, out var text))
			{
				throw new ArgumentException(text, "url");
			}
			if (protocols != null && protocols.Length != 0)
			{
				text = protocols.CheckIfValidProtocols();
				if (text != null)
				{
					throw new ArgumentException(text, "protocols");
				}
				_protocols = protocols;
			}
			_base64Key = CreateBase64Key();
			_client = true;
			_logger = new Logger();
			_message = messagec;
			_secure = _uri.Scheme == "wss";
			_waitTime = TimeSpan.FromSeconds(5.0);
			init();
		}

		private bool accept()
		{
			lock (_forState)
			{
				if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: false, out var text))
				{
					_logger.Error(text);
					error("An error has occurred in accepting.", null);
					return false;
				}
				try
				{
					if (!acceptHandshake())
					{
						return false;
					}
					_readyState = WebSocketState.Open;
				}
				catch (Exception ex)
				{
					_logger.Fatal(ex.ToString());
					fatal("An exception has occurred while accepting.", ex);
					return false;
				}
				return true;
			}
		}

		private bool acceptHandshake()
		{
			_logger.Debug($"A request from {_context.UserEndPoint}:\n{_context}");
			if (!checkHandshakeRequest(_context, out var text))
			{
				sendHttpResponse(createHandshakeFailureResponse(WebSocketSharp.Net.HttpStatusCode.BadRequest));
				_logger.Fatal(text);
				fatal("An error has occurred while accepting.", CloseStatusCode.ProtocolError);
				return false;
			}
			if (!customCheckHandshakeRequest(_context, out text))
			{
				sendHttpResponse(createHandshakeFailureResponse(WebSocketSharp.Net.HttpStatusCode.BadRequest));
				_logger.Fatal(text);
				fatal("An error has occurred while accepting.", CloseStatusCode.PolicyViolation);
				return false;
			}
			_base64Key = _context.Headers["Sec-WebSocket-Key"];
			if (_protocol != null)
			{
				processSecWebSocketProtocolHeader(_context.SecWebSocketProtocols);
			}
			if (!_ignoreExtensions)
			{
				processSecWebSocketExtensionsClientHeader(_context.Headers["Sec-WebSocket-Extensions"]);
			}
			return sendHttpResponse(createHandshakeResponse());
		}

		private bool checkHandshakeRequest(WebSocketContext context, out string message)
		{
			message = null;
			if (context.RequestUri == null)
			{
				message = "Specifies an invalid Request-URI.";
				return false;
			}
			if (!context.IsWebSocketRequest)
			{
				message = "Not a WebSocket handshake request.";
				return false;
			}
			NameValueCollection headers = context.Headers;
			if (!validateSecWebSocketKeyHeader(headers["Sec-WebSocket-Key"]))
			{
				message = "Includes no Sec-WebSocket-Key header, or it has an invalid value.";
				return false;
			}
			if (!validateSecWebSocketVersionClientHeader(headers["Sec-WebSocket-Version"]))
			{
				message = "Includes no Sec-WebSocket-Version header, or it has an invalid value.";
				return false;
			}
			if (!validateSecWebSocketProtocolClientHeader(headers["Sec-WebSocket-Protocol"]))
			{
				message = "Includes an invalid Sec-WebSocket-Protocol header.";
				return false;
			}
			if (!_ignoreExtensions && !validateSecWebSocketExtensionsClientHeader(headers["Sec-WebSocket-Extensions"]))
			{
				message = "Includes an invalid Sec-WebSocket-Extensions header.";
				return false;
			}
			return true;
		}

		private bool checkHandshakeResponse(HttpResponse response, out string message)
		{
			message = null;
			if (response.IsRedirect)
			{
				message = "Indicates the redirection.";
				return false;
			}
			if (response.IsUnauthorized)
			{
				message = "Requires the authentication.";
				return false;
			}
			if (!response.IsWebSocketResponse)
			{
				message = "Not a WebSocket handshake response.";
				return false;
			}
			NameValueCollection headers = response.Headers;
			if (!validateSecWebSocketAcceptHeader(headers["Sec-WebSocket-Accept"]))
			{
				message = "Includes no Sec-WebSocket-Accept header, or it has an invalid value.";
				return false;
			}
			if (!validateSecWebSocketProtocolServerHeader(headers["Sec-WebSocket-Protocol"]))
			{
				message = "Includes no Sec-WebSocket-Protocol header, or it has an invalid value.";
				return false;
			}
			if (!validateSecWebSocketExtensionsServerHeader(headers["Sec-WebSocket-Extensions"]))
			{
				message = "Includes an invalid Sec-WebSocket-Extensions header.";
				return false;
			}
			if (!validateSecWebSocketVersionServerHeader(headers["Sec-WebSocket-Version"]))
			{
				message = "Includes an invalid Sec-WebSocket-Version header.";
				return false;
			}
			return true;
		}

		private bool checkIfAvailable(bool connecting, bool open, bool closing, bool closed, out string message)
		{
			message = null;
			if (!connecting && _readyState == WebSocketState.Connecting)
			{
				message = "This operation is not available in: connecting";
				return false;
			}
			if (!open && _readyState == WebSocketState.Open)
			{
				message = "This operation is not available in: open";
				return false;
			}
			if (!closing && _readyState == WebSocketState.Closing)
			{
				message = "This operation is not available in: closing";
				return false;
			}
			if (!closed && _readyState == WebSocketState.Closed)
			{
				message = "This operation is not available in: closed";
				return false;
			}
			return true;
		}

		private bool checkIfAvailable(bool client, bool server, bool connecting, bool open, bool closing, bool closed, out string message)
		{
			message = null;
			if (!client && _client)
			{
				message = "This operation is not available in: client";
				return false;
			}
			if (!server && !_client)
			{
				message = "This operation is not available in: server";
				return false;
			}
			return checkIfAvailable(connecting, open, closing, closed, out message);
		}

		private static bool checkParametersForSetCredentials(string username, string password, out string message)
		{
			message = null;
			if (username.IsNullOrEmpty())
			{
				return true;
			}
			if (Ext.Contains(username, ':') || !username.IsText())
			{
				message = "'username' contains an invalid character.";
				return false;
			}
			if (password.IsNullOrEmpty())
			{
				return true;
			}
			if (!password.IsText())
			{
				message = "'password' contains an invalid character.";
				return false;
			}
			return true;
		}

		private static bool checkParametersForSetProxy(string url, string username, string password, out string message)
		{
			message = null;
			if (url.IsNullOrEmpty())
			{
				return true;
			}
			if (!Uri.TryCreate(url, UriKind.Absolute, out Uri result) || result.Scheme != "http" || result.Segments.Length > 1)
			{
				message = "'url' is an invalid URL.";
				return false;
			}
			if (username.IsNullOrEmpty())
			{
				return true;
			}
			if (Ext.Contains(username, ':') || !username.IsText())
			{
				message = "'username' contains an invalid character.";
				return false;
			}
			if (password.IsNullOrEmpty())
			{
				return true;
			}
			if (!password.IsText())
			{
				message = "'password' contains an invalid character.";
				return false;
			}
			return true;
		}

		private bool checkReceivedFrame(WebSocketFrame frame, out string message)
		{
			message = null;
			bool isMasked = frame.IsMasked;
			if (_client && isMasked)
			{
				message = "A frame from the server is masked.";
				return false;
			}
			if (!_client && !isMasked)
			{
				message = "A frame from a client is not masked.";
				return false;
			}
			if (_inContinuation && frame.IsData)
			{
				message = "A data frame has been received while receiving continuation frames.";
				return false;
			}
			if (frame.IsCompressed && _compression == CompressionMethod.None)
			{
				message = "A compressed frame has been received without any agreement for it.";
				return false;
			}
			if (frame.Rsv2 == Rsv.On)
			{
				message = "The RSV2 of a frame is non-zero without any negotiation for it.";
				return false;
			}
			if (frame.Rsv3 == Rsv.On)
			{
				message = "The RSV3 of a frame is non-zero without any negotiation for it.";
				return false;
			}
			return true;
		}

		private void close(ushort code, string reason)
		{
			if (_readyState == WebSocketState.Closing)
			{
				_logger.Info("The closing is already in progress.");
				return;
			}
			if (_readyState == WebSocketState.Closed)
			{
				_logger.Info("The connection has already been closed.");
				return;
			}
			if (code == 1005)
			{
				close(PayloadData.Empty, send: true, receive: true, received: false);
				return;
			}
			bool receive = !code.IsReserved();
			close(new PayloadData(code, reason), receive, receive, received: false);
		}

		private void close(PayloadData payloadData, bool send, bool receive, bool received)
		{
			lock (_forState)
			{
				if (_readyState == WebSocketState.Closing)
				{
					_logger.Info("The closing is already in progress.");
					return;
				}
				if (_readyState == WebSocketState.Closed)
				{
					_logger.Info("The connection has already been closed.");
					return;
				}
				send = send && _readyState == WebSocketState.Open;
				receive = send && receive;
				_readyState = WebSocketState.Closing;
			}
			_logger.Trace("Begin closing the connection.");
			bool wasClean = closeHandshake(payloadData, send, receive, received);
			releaseResources();
			_logger.Trace("End closing the connection.");
			_readyState = WebSocketState.Closed;
			CloseEventArgs closeEventArgs = new CloseEventArgs(payloadData);
			closeEventArgs.WasClean = wasClean;
			try
			{
				this.OnClose.Emit(this, closeEventArgs);
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
				error("An error has occurred during the OnClose event.", ex);
			}
		}

		private void closeAsync(ushort code, string reason)
		{
			if (_readyState == WebSocketState.Closing)
			{
				_logger.Info("The closing is already in progress.");
				return;
			}
			if (_readyState == WebSocketState.Closed)
			{
				_logger.Info("The connection has already been closed.");
				return;
			}
			if (code == 1005)
			{
				closeAsync(PayloadData.Empty, send: true, receive: true, received: false);
				return;
			}
			bool receive = !code.IsReserved();
			closeAsync(new PayloadData(code, reason), receive, receive, received: false);
		}

		private void closeAsync(PayloadData payloadData, bool send, bool receive, bool received)
		{
			Action<PayloadData, bool, bool, bool> closer = close;
			closer.BeginInvoke(payloadData, send, receive, received, delegate(IAsyncResult ar)
			{
				closer.EndInvoke(ar);
			}, null);
		}

		private bool closeHandshake(byte[] frameAsBytes, bool receive, bool received)
		{
			bool flag = frameAsBytes != null && sendBytes(frameAsBytes);
			if (!received && flag && receive && _receivingExited != null)
			{
				received = _receivingExited.WaitOne(_waitTime);
			}
			bool flag2 = flag && received;
			_logger.Debug($"Was clean?: {flag2}\n  sent: {flag}\n  received: {received}");
			return flag2;
		}

		private bool closeHandshake(PayloadData payloadData, bool send, bool receive, bool received)
		{
			bool flag = false;
			if (send)
			{
				WebSocketFrame webSocketFrame = WebSocketFrame.CreateCloseFrame(payloadData, _client);
				flag = sendBytes(webSocketFrame.ToArray());
				if (_client)
				{
					webSocketFrame.Unmask();
				}
			}
			if (!received && flag && receive && _receivingExited != null)
			{
				received = _receivingExited.WaitOne(_waitTime);
			}
			bool flag2 = flag && received;
			_logger.Debug($"Was clean?: {flag2}\n  sent: {flag}\n  received: {received}");
			return flag2;
		}

		private bool connect()
		{
			lock (_forState)
			{
				if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: true, out var text))
				{
					_logger.Error(text);
					error("An error has occurred in connecting.", null);
					return false;
				}
				if (_retryCountForConnect > _maxRetryCountForConnect)
				{
					_retryCountForConnect = 0;
					_logger.Fatal("A series of reconnecting has failed.");
					return false;
				}
				_readyState = WebSocketState.Connecting;
				try
				{
					doHandshake();
				}
				catch (Exception ex)
				{
					_retryCountForConnect++;
					_logger.Fatal(ex.ToString());
					fatal("An exception has occurred while connecting.", ex);
					return false;
				}
				_retryCountForConnect = 1;
				_readyState = WebSocketState.Open;
				return true;
			}
		}

		private string createExtensions()
		{
			StringBuilder stringBuilder = new StringBuilder(80);
			if (_compression != 0)
			{
				string arg = _compression.ToExtensionString("server_no_context_takeover", "client_no_context_takeover");
				stringBuilder.AppendFormat("{0}, ", arg);
			}
			int length = stringBuilder.Length;
			if (length > 2)
			{
				stringBuilder.Length = length - 2;
				return stringBuilder.ToString();
			}
			return null;
		}

		private HttpResponse createHandshakeFailureResponse(WebSocketSharp.Net.HttpStatusCode code)
		{
			HttpResponse httpResponse = HttpResponse.CreateCloseResponse(code);
			httpResponse.Headers["Sec-WebSocket-Version"] = "13";
			return httpResponse;
		}

		private HttpRequest createHandshakeRequest()
		{
			HttpRequest httpRequest = HttpRequest.CreateWebSocketRequest(_uri);
			NameValueCollection headers = httpRequest.Headers;
			if (!_origin.IsNullOrEmpty())
			{
				headers["Origin"] = _origin;
			}
			headers["Sec-WebSocket-Key"] = _base64Key;
			_protocolsRequested = _protocols != null;
			if (_protocolsRequested)
			{
				headers["Sec-WebSocket-Protocol"] = _protocols.ToString(", ");
			}
			_extensionsRequested = _compression != CompressionMethod.None;
			if (_extensionsRequested)
			{
				headers["Sec-WebSocket-Extensions"] = createExtensions();
			}
			headers["Sec-WebSocket-Version"] = "13";
			AuthenticationResponse authenticationResponse = null;
			if (_authChallenge != null && _credentials != null)
			{
				authenticationResponse = new AuthenticationResponse(_authChallenge, _credentials, _nonceCount);
				_nonceCount = authenticationResponse.NonceCount;
			}
			else if (_preAuth)
			{
				authenticationResponse = new AuthenticationResponse(_credentials);
			}
			if (authenticationResponse != null)
			{
				headers["Authorization"] = authenticationResponse.ToString();
			}
			if (_cookies.Count > 0)
			{
				httpRequest.SetCookies(_cookies);
			}
			return httpRequest;
		}

		private HttpResponse createHandshakeResponse()
		{
			HttpResponse httpResponse = HttpResponse.CreateWebSocketResponse();
			NameValueCollection headers = httpResponse.Headers;
			headers["Sec-WebSocket-Accept"] = CreateResponseKey(_base64Key);
			if (_protocol != null)
			{
				headers["Sec-WebSocket-Protocol"] = _protocol;
			}
			if (_extensions != null)
			{
				headers["Sec-WebSocket-Extensions"] = _extensions;
			}
			if (_cookies.Count > 0)
			{
				httpResponse.SetCookies(_cookies);
			}
			return httpResponse;
		}

		private bool customCheckHandshakeRequest(WebSocketContext context, out string message)
		{
			message = null;
			return _handshakeRequestChecker == null || (message = _handshakeRequestChecker(context)) == null;
		}

		private MessageEventArgs dequeueFromMessageEventQueue()
		{
			lock (_forMessageEventQueue)
			{
				return (_messageEventQueue.Count > 0) ? _messageEventQueue.Dequeue() : null;
			}
		}

		private void doHandshake()
		{
			setClientStream();
			HttpResponse httpResponse = sendHandshakeRequest();
			if (!checkHandshakeResponse(httpResponse, out var text))
			{
				throw new WebSocketException(CloseStatusCode.ProtocolError, text);
			}
			if (_protocolsRequested)
			{
				_protocol = httpResponse.Headers["Sec-WebSocket-Protocol"];
			}
			if (_extensionsRequested)
			{
				processSecWebSocketExtensionsServerHeader(httpResponse.Headers["Sec-WebSocket-Extensions"]);
			}
			processCookies(httpResponse.Cookies);
		}

		private void enqueueToMessageEventQueue(MessageEventArgs e)
		{
			lock (_forMessageEventQueue)
			{
				_messageEventQueue.Enqueue(e);
			}
		}

		private void error(string message, Exception exception)
		{
			try
			{
				this.OnError.Emit(this, new ErrorEventArgs(message, exception));
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
			}
		}

		private void fatal(string message, Exception exception)
		{
			CloseStatusCode code = ((exception is WebSocketException) ? ((WebSocketException)exception).Code : CloseStatusCode.Abnormal);
			fatal(message, (ushort)code);
		}

		private void fatal(string message, ushort code)
		{
			PayloadData payloadData = new PayloadData(code, message);
			close(payloadData, !code.IsReserved(), receive: false, received: false);
		}

		private void fatal(string message, CloseStatusCode code)
		{
			fatal(message, (ushort)code);
		}

		private void init()
		{
			_compression = CompressionMethod.None;
			_cookies = new WebSocketSharp.Net.CookieCollection();
			_forPing = new object();
			_forSend = new object();
			_forState = new object();
			_messageEventQueue = new Queue<MessageEventArgs>();
			_forMessageEventQueue = ((ICollection)_messageEventQueue).SyncRoot;
			_readyState = WebSocketState.Connecting;
		}

		private void message()
		{
			MessageEventArgs obj = null;
			lock (_forMessageEventQueue)
			{
				if (_inMessage || _messageEventQueue.Count == 0 || _readyState != WebSocketState.Open)
				{
					return;
				}
				_inMessage = true;
				obj = _messageEventQueue.Dequeue();
			}
			_message(obj);
		}

		private void messagec(MessageEventArgs e)
		{
			while (true)
			{
				try
				{
					this.OnMessage.Emit(this, e);
				}
				catch (Exception ex)
				{
					_logger.Error(ex.ToString());
					error("An error has occurred during an OnMessage event.", ex);
				}
				lock (_forMessageEventQueue)
				{
					if (_messageEventQueue.Count == 0 || _readyState != WebSocketState.Open)
					{
						_inMessage = false;
						break;
					}
					e = _messageEventQueue.Dequeue();
				}
				bool flag = true;
			}
		}

		private void messages(MessageEventArgs e)
		{
			try
			{
				this.OnMessage.Emit(this, e);
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
				error("An error has occurred during an OnMessage event.", ex);
			}
			lock (_forMessageEventQueue)
			{
				if (_messageEventQueue.Count == 0 || _readyState != WebSocketState.Open)
				{
					_inMessage = false;
					return;
				}
				e = _messageEventQueue.Dequeue();
			}
			ThreadPool.QueueUserWorkItem(delegate
			{
				messages(e);
			});
		}

		private void open()
		{
			_inMessage = true;
			startReceiving();
			try
			{
				this.OnOpen.Emit(this, EventArgs.Empty);
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
				error("An error has occurred during the OnOpen event.", ex);
			}
			MessageEventArgs obj = null;
			lock (_forMessageEventQueue)
			{
				if (_messageEventQueue.Count == 0 || _readyState != WebSocketState.Open)
				{
					_inMessage = false;
					return;
				}
				obj = _messageEventQueue.Dequeue();
			}
			_message.BeginInvoke(obj, delegate(IAsyncResult ar)
			{
				_message.EndInvoke(ar);
			}, null);
		}

		private bool ping(byte[] data)
		{
			if (_readyState != WebSocketState.Open)
			{
				return false;
			}
			ManualResetEvent pongReceived = _pongReceived;
			if (pongReceived == null)
			{
				return false;
			}
			lock (_forPing)
			{
				try
				{
					pongReceived.Reset();
					if (!send(Fin.Final, Opcode.Ping, data, compressed: false))
					{
						return false;
					}
					return pongReceived.WaitOne(_waitTime);
				}
				catch (ObjectDisposedException)
				{
					return false;
				}
			}
		}

		private bool processCloseFrame(WebSocketFrame frame)
		{
			PayloadData payloadData = frame.PayloadData;
			close(payloadData, !payloadData.HasReservedCode, receive: false, received: true);
			return false;
		}

		private void processCookies(WebSocketSharp.Net.CookieCollection cookies)
		{
			if (cookies.Count != 0)
			{
				_cookies.SetOrRemove(cookies);
			}
		}

		private bool processDataFrame(WebSocketFrame frame)
		{
			enqueueToMessageEventQueue(frame.IsCompressed ? new MessageEventArgs(frame.Opcode, frame.PayloadData.ApplicationData.Decompress(_compression)) : new MessageEventArgs(frame));
			return true;
		}

		private bool processFragmentFrame(WebSocketFrame frame)
		{
			if (!_inContinuation)
			{
				if (frame.IsContinuation)
				{
					return true;
				}
				_fragmentsOpcode = frame.Opcode;
				_fragmentsCompressed = frame.IsCompressed;
				_fragmentsBuffer = new MemoryStream();
				_inContinuation = true;
			}
			_fragmentsBuffer.WriteBytes(frame.PayloadData.ApplicationData, 1024);
			if (frame.IsFinal)
			{
				using (_fragmentsBuffer)
				{
					byte[] rawData = (_fragmentsCompressed ? _fragmentsBuffer.DecompressToArray(_compression) : _fragmentsBuffer.ToArray());
					enqueueToMessageEventQueue(new MessageEventArgs(_fragmentsOpcode, rawData));
				}
				_fragmentsBuffer = null;
				_inContinuation = false;
			}
			return true;
		}

		private bool processPingFrame(WebSocketFrame frame)
		{
			WebSocketFrame webSocketFrame = WebSocketFrame.CreatePongFrame(frame.PayloadData, _client);
			lock (_forState)
			{
				if (_readyState != WebSocketState.Open)
				{
					_logger.Error("The state of the connection has been changed.");
					return true;
				}
				if (!sendBytes(webSocketFrame.ToArray()))
				{
					return false;
				}
			}
			_logger.Trace("A pong has been sent to respond to this ping.");
			if (_emitOnPing)
			{
				if (_client)
				{
					webSocketFrame.Unmask();
				}
				enqueueToMessageEventQueue(new MessageEventArgs(frame));
			}
			return true;
		}

		private bool processPongFrame(WebSocketFrame frame)
		{
			try
			{
				_pongReceived.Set();
			}
			catch (NullReferenceException)
			{
				return false;
			}
			catch (ObjectDisposedException)
			{
				return false;
			}
			_logger.Trace("It has been signaled that a pong was received.");
			return true;
		}

		private bool processReceivedFrame(WebSocketFrame frame)
		{
			if (!checkReceivedFrame(frame, out var text))
			{
				throw new WebSocketException(CloseStatusCode.ProtocolError, text);
			}
			frame.Unmask();
			return frame.IsFragment ? processFragmentFrame(frame) : (frame.IsData ? processDataFrame(frame) : (frame.IsPing ? processPingFrame(frame) : (frame.IsPong ? processPongFrame(frame) : (frame.IsClose ? processCloseFrame(frame) : processUnsupportedFrame(frame)))));
		}

		private void processSecWebSocketExtensionsClientHeader(string value)
		{
			if (value == null)
			{
				return;
			}
			StringBuilder stringBuilder = new StringBuilder(80);
			bool flag = false;
			foreach (string item in value.SplitHeaderValue(','))
			{
				string value2 = item.Trim();
				if (!flag && value2.IsCompressionExtension(CompressionMethod.Deflate))
				{
					_compression = CompressionMethod.Deflate;
					stringBuilder.AppendFormat("{0}, ", _compression.ToExtensionString("client_no_context_takeover", "server_no_context_takeover"));
					flag = true;
				}
			}
			int length = stringBuilder.Length;
			if (length > 2)
			{
				stringBuilder.Length = length - 2;
				_extensions = stringBuilder.ToString();
			}
		}

		private void processSecWebSocketExtensionsServerHeader(string value)
		{
			if (value == null)
			{
				_compression = CompressionMethod.None;
			}
			else
			{
				_extensions = value;
			}
		}

		private void processSecWebSocketProtocolHeader(IEnumerable<string> values)
		{
			if (!values.Contains((string p) => p == _protocol))
			{
				_protocol = null;
			}
		}

		private bool processUnsupportedFrame(WebSocketFrame frame)
		{
			_logger.Fatal("An unsupported frame:" + frame.PrintToString(dumped: false));
			fatal("There is no way to handle it.", CloseStatusCode.PolicyViolation);
			return false;
		}

		private void releaseClientResources()
		{
			if (_stream != null)
			{
				_stream.Dispose();
				_stream = null;
			}
			if (_tcpClient != null)
			{
				_tcpClient.Close();
				_tcpClient = null;
			}
		}

		private void releaseCommonResources()
		{
			if (_fragmentsBuffer != null)
			{
				_fragmentsBuffer.Dispose();
				_fragmentsBuffer = null;
				_inContinuation = false;
			}
			if (_pongReceived != null)
			{
				_pongReceived.Close();
				_pongReceived = null;
			}
			if (_receivingExited != null)
			{
				_receivingExited.Close();
				_receivingExited = null;
			}
		}

		private void releaseResources()
		{
			if (_client)
			{
				releaseClientResources();
			}
			else
			{
				releaseServerResources();
			}
			releaseCommonResources();
		}

		private void releaseServerResources()
		{
			if (_closeContext != null)
			{
				_closeContext();
				_closeContext = null;
				_stream = null;
				_context = null;
			}
		}

		private bool send(Opcode opcode, Stream stream)
		{
			lock (_forSend)
			{
				Stream stream2 = stream;
				bool flag = false;
				bool flag2 = false;
				try
				{
					if (_compression != 0)
					{
						stream = stream.Compress(_compression);
						flag = true;
					}
					flag2 = send(opcode, stream, flag);
					if (!flag2)
					{
						error("A send has been interrupted.", null);
					}
				}
				catch (Exception ex)
				{
					_logger.Error(ex.ToString());
					error("An error has occurred during a send.", ex);
				}
				finally
				{
					if (flag)
					{
						stream.Dispose();
					}
					stream2.Dispose();
				}
				return flag2;
			}
		}

		private bool send(Opcode opcode, Stream stream, bool compressed)
		{
			long length = stream.Length;
			if (length == 0)
			{
				return send(Fin.Final, opcode, EmptyBytes, compressed: false);
			}
			long num = length / FragmentLength;
			int num2 = (int)(length % FragmentLength);
			byte[] array = null;
			switch (num)
			{
			case 0L:
				array = new byte[num2];
				return stream.Read(array, 0, num2) == num2 && send(Fin.Final, opcode, array, compressed);
			case 1L:
				if (num2 == 0)
				{
					array = new byte[FragmentLength];
					return stream.Read(array, 0, FragmentLength) == FragmentLength && send(Fin.Final, opcode, array, compressed);
				}
				break;
			}
			array = new byte[FragmentLength];
			if (stream.Read(array, 0, FragmentLength) != FragmentLength || !send(Fin.More, opcode, array, compressed))
			{
				return false;
			}
			long num3 = ((num2 == 0) ? (num - 2) : (num - 1));
			for (long num4 = 0L; num4 < num3; num4++)
			{
				if (stream.Read(array, 0, FragmentLength) != FragmentLength || !send(Fin.More, Opcode.Cont, array, compressed: false))
				{
					return false;
				}
			}
			if (num2 == 0)
			{
				num2 = FragmentLength;
			}
			else
			{
				array = new byte[num2];
			}
			return stream.Read(array, 0, num2) == num2 && send(Fin.Final, Opcode.Cont, array, compressed: false);
		}

		private bool send(Fin fin, Opcode opcode, byte[] data, bool compressed)
		{
			lock (_forState)
			{
				if (_readyState != WebSocketState.Open)
				{
					_logger.Error("The state of the connection has been changed.");
					return false;
				}
				WebSocketFrame webSocketFrame = new WebSocketFrame(fin, opcode, data, compressed, _client);
				return sendBytes(webSocketFrame.ToArray());
			}
		}

		private void sendAsync(Opcode opcode, Stream stream, Action<bool> completed)
		{
			Func<Opcode, Stream, bool> sender = send;
			sender.BeginInvoke(opcode, stream, delegate(IAsyncResult ar)
			{
				try
				{
					bool obj = sender.EndInvoke(ar);
					if (completed != null)
					{
						completed(obj);
					}
				}
				catch (Exception ex)
				{
					_logger.Error(ex.ToString());
					error("An error has occurred during the callback for an async send.", ex);
				}
			}, null);
		}

		private bool sendBytes(byte[] bytes)
		{
			try
			{
				_stream.Write(bytes, 0, bytes.Length);
				return true;
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
				return false;
			}
		}

		private HttpResponse sendHandshakeRequest()
		{
			HttpRequest httpRequest = createHandshakeRequest();
			if (CustomHeaders != null)
			{
				foreach (KeyValuePair<string, string> customHeader in CustomHeaders)
				{
					if (customHeader.Key == "Sec-WebSocket-Key")
					{
						_logger.Error("Sec-WebSocket-Key is automatically generated and your override will not work.");
					}
					else
					{
						httpRequest.Headers.Set(customHeader.Key, customHeader.Value);
					}
				}
			}
			HttpResponse httpResponse = sendHttpRequest(httpRequest, 90000);
			if (httpResponse.IsUnauthorized)
			{
				string text = httpResponse.Headers["WWW-Authenticate"];
				_logger.Warn($"Received an authentication requirement for '{text}'.");
				if (text.IsNullOrEmpty())
				{
					_logger.Error("No authentication challenge is specified.");
					return httpResponse;
				}
				_authChallenge = AuthenticationChallenge.Parse(text);
				if (_authChallenge == null)
				{
					_logger.Error("An invalid authentication challenge is specified.");
					return httpResponse;
				}
				if (_credentials != null && (!_preAuth || _authChallenge.Scheme == WebSocketSharp.Net.AuthenticationSchemes.Digest))
				{
					if (httpResponse.HasConnectionClose)
					{
						releaseClientResources();
						setClientStream();
					}
					AuthenticationResponse authenticationResponse = new AuthenticationResponse(_authChallenge, _credentials, _nonceCount);
					_nonceCount = authenticationResponse.NonceCount;
					httpRequest.Headers["Authorization"] = authenticationResponse.ToString();
					httpResponse = sendHttpRequest(httpRequest, 15000);
				}
			}
			if (httpResponse.IsRedirect)
			{
				string text2 = httpResponse.Headers["Location"];
				_logger.Warn($"Received a redirection to '{text2}'.");
				if (_enableRedirection)
				{
					if (text2.IsNullOrEmpty())
					{
						_logger.Error("No url to redirect is located.");
						return httpResponse;
					}
					if (!text2.TryCreateWebSocketUri(out var result, out var text3))
					{
						_logger.Error("An invalid url to redirect is located: " + text3);
						return httpResponse;
					}
					releaseClientResources();
					_uri = result;
					_secure = result.Scheme == "wss";
					setClientStream();
					return sendHandshakeRequest();
				}
			}
			return httpResponse;
		}

		private HttpResponse sendHttpRequest(HttpRequest request, int millisecondsTimeout)
		{
			_logger.Debug("A request to the server:\n" + request.ToString());
			HttpResponse response = request.GetResponse(_stream, millisecondsTimeout);
			_logger.Debug("A response to this request:\n" + response.ToString());
			return response;
		}

		private bool sendHttpResponse(HttpResponse response)
		{
			_logger.Debug("A response to this request:\n" + response.ToString());
			return sendBytes(response.ToByteArray());
		}

		private void sendProxyConnectRequest()
		{
			HttpRequest httpRequest = HttpRequest.CreateConnectRequest(_uri);
			HttpResponse httpResponse = sendHttpRequest(httpRequest, 90000);
			if (httpResponse.IsProxyAuthenticationRequired)
			{
				string text = httpResponse.Headers["Proxy-Authenticate"];
				_logger.Warn($"Received a proxy authentication requirement for '{text}'.");
				if (text.IsNullOrEmpty())
				{
					throw new WebSocketException("No proxy authentication challenge is specified.");
				}
				AuthenticationChallenge authenticationChallenge = AuthenticationChallenge.Parse(text);
				if (authenticationChallenge == null)
				{
					throw new WebSocketException("An invalid proxy authentication challenge is specified.");
				}
				if (_proxyCredentials != null)
				{
					if (httpResponse.HasConnectionClose)
					{
						releaseClientResources();
						_tcpClient = new TcpClient(_proxyUri.DnsSafeHost, _proxyUri.Port);
						_stream = _tcpClient.GetStream();
					}
					AuthenticationResponse authenticationResponse = new AuthenticationResponse(authenticationChallenge, _proxyCredentials, 0u);
					httpRequest.Headers["Proxy-Authorization"] = authenticationResponse.ToString();
					httpResponse = sendHttpRequest(httpRequest, 15000);
				}
				if (httpResponse.IsProxyAuthenticationRequired)
				{
					throw new WebSocketException("A proxy authentication is required.");
				}
			}
			if (httpResponse.StatusCode[0] != '2')
			{
				throw new WebSocketException("The proxy has failed a connection to the requested host and port.");
			}
		}

		private void setClientStream()
		{
			if (_proxyUri != null)
			{
				_tcpClient = new TcpClient(_proxyUri.DnsSafeHost, _proxyUri.Port);
				_stream = _tcpClient.GetStream();
				sendProxyConnectRequest();
			}
			else
			{
				_tcpClient = new TcpClient(_uri.DnsSafeHost, _uri.Port);
				_stream = _tcpClient.GetStream();
			}
			if (_secure)
			{
				ClientSslConfiguration sslConfiguration = SslConfiguration;
				string targetHost = sslConfiguration.TargetHost;
				if (targetHost != _uri.DnsSafeHost)
				{
					throw new WebSocketException(CloseStatusCode.TlsHandshakeFailure, "An invalid host name is specified.");
				}
				try
				{
					SslStream sslStream = new SslStream(_stream, leaveInnerStreamOpen: false, sslConfiguration.ServerCertificateValidationCallback, sslConfiguration.ClientCertificateSelectionCallback);
					sslStream.AuthenticateAsClient(targetHost, sslConfiguration.ClientCertificates, sslConfiguration.EnabledSslProtocols, sslConfiguration.CheckCertificateRevocation);
					_stream = sslStream;
				}
				catch (Exception innerException)
				{
					throw new WebSocketException(CloseStatusCode.TlsHandshakeFailure, innerException);
				}
			}
		}

		private void startReceiving()
		{
			if (_messageEventQueue.Count > 0)
			{
				_messageEventQueue.Clear();
			}
			_pongReceived = new ManualResetEvent(initialState: false);
			_receivingExited = new ManualResetEvent(initialState: false);
			Action receive = null;
			receive = delegate
			{
				WebSocketFrame.ReadFrameAsync(_stream, unmask: false, delegate(WebSocketFrame frame)
				{
					if (!processReceivedFrame(frame) || _readyState == WebSocketState.Closed)
					{
						_receivingExited?.Set();
					}
					else
					{
						receive();
						if (!_inMessage && HasMessage && _readyState == WebSocketState.Open)
						{
							message();
						}
					}
				}, delegate(Exception ex)
				{
					_logger.Fatal(ex.ToString());
					fatal("An exception has occurred while receiving.", ex);
				});
			};
			receive();
		}

		private bool validateSecWebSocketAcceptHeader(string value)
		{
			return value != null && value == CreateResponseKey(_base64Key);
		}

		private bool validateSecWebSocketExtensionsClientHeader(string value)
		{
			return value == null || value.Length > 0;
		}

		private bool validateSecWebSocketExtensionsServerHeader(string value)
		{
			if (value == null)
			{
				return true;
			}
			if (value.Length == 0)
			{
				return false;
			}
			if (!_extensionsRequested)
			{
				return false;
			}
			bool flag = _compression != CompressionMethod.None;
			foreach (string item in value.SplitHeaderValue(','))
			{
				string text = item.Trim();
				if (flag && text.IsCompressionExtension(_compression))
				{
					if (!text.Contains("server_no_context_takeover"))
					{
						_logger.Error("The server hasn't sent back 'server_no_context_takeover'.");
						return false;
					}
					if (!text.Contains("client_no_context_takeover"))
					{
						_logger.Warn("The server hasn't sent back 'client_no_context_takeover'.");
					}
					string method = _compression.ToExtensionString();
					if (text.SplitHeaderValue(';').Contains(delegate(string t)
					{
						t = t.Trim();
						return t != method && t != "server_no_context_takeover" && t != "client_no_context_takeover";
					}))
					{
						return false;
					}
					continue;
				}
				return false;
			}
			return true;
		}

		private bool validateSecWebSocketKeyHeader(string value)
		{
			return value != null && value.Length > 0;
		}

		private bool validateSecWebSocketProtocolClientHeader(string value)
		{
			return value == null || value.Length > 0;
		}

		private bool validateSecWebSocketProtocolServerHeader(string value)
		{
			if (value == null)
			{
				return !_protocolsRequested;
			}
			if (value.Length == 0)
			{
				return false;
			}
			return _protocolsRequested && _protocols.Contains((string p) => p == value);
		}

		private bool validateSecWebSocketVersionClientHeader(string value)
		{
			return value != null && value == "13";
		}

		private bool validateSecWebSocketVersionServerHeader(string value)
		{
			return value == null || value == "13";
		}

		internal static bool CheckParametersForClose(ushort code, string reason, bool client, out string message)
		{
			message = null;
			if (!code.IsCloseStatusCode())
			{
				message = "'code' is an invalid status code.";
				return false;
			}
			if (code == 1005 && !reason.IsNullOrEmpty())
			{
				message = "'code' cannot have a reason.";
				return false;
			}
			if (code == 1010 && !client)
			{
				message = "'code' cannot be used by a server.";
				return false;
			}
			if (code == 1011 && client)
			{
				message = "'code' cannot be used by a client.";
				return false;
			}
			if (!reason.IsNullOrEmpty() && reason.UTF8Encode().Length > 123)
			{
				message = "The size of 'reason' is greater than the allowable max size.";
				return false;
			}
			return true;
		}

		internal static bool CheckParametersForClose(CloseStatusCode code, string reason, bool client, out string message)
		{
			message = null;
			if (code == CloseStatusCode.NoStatus && !reason.IsNullOrEmpty())
			{
				message = "'code' cannot have a reason.";
				return false;
			}
			if (code == CloseStatusCode.MandatoryExtension && !client)
			{
				message = "'code' cannot be used by a server.";
				return false;
			}
			if (code == CloseStatusCode.ServerError && client)
			{
				message = "'code' cannot be used by a client.";
				return false;
			}
			if (!reason.IsNullOrEmpty() && reason.UTF8Encode().Length > 123)
			{
				message = "The size of 'reason' is greater than the allowable max size.";
				return false;
			}
			return true;
		}

		internal static string CheckPingParameter(string message, out byte[] bytes)
		{
			bytes = message.UTF8Encode();
			return (bytes.Length > 125) ? "A message has greater than the allowable max size." : null;
		}

		internal static string CheckSendParameter(byte[] data)
		{
			return (data == null) ? "'data' is null." : null;
		}

		internal static string CheckSendParameter(FileInfo file)
		{
			return (file == null) ? "'file' is null." : null;
		}

		internal static string CheckSendParameter(string data)
		{
			return (data == null) ? "'data' is null." : null;
		}

		internal static string CheckSendParameters(Stream stream, int length)
		{
			return (stream == null) ? "'stream' is null." : ((!stream.CanRead) ? "'stream' cannot be read." : ((length < 1) ? "'length' is less than 1." : null));
		}

		internal void Close(HttpResponse response)
		{
			_readyState = WebSocketState.Closing;
			sendHttpResponse(response);
			releaseServerResources();
			_readyState = WebSocketState.Closed;
		}

		internal void Close(WebSocketSharp.Net.HttpStatusCode code)
		{
			Close(createHandshakeFailureResponse(code));
		}

		internal void Close(PayloadData payloadData, byte[] frameAsBytes)
		{
			lock (_forState)
			{
				if (_readyState == WebSocketState.Closing)
				{
					_logger.Info("The closing is already in progress.");
					return;
				}
				if (_readyState == WebSocketState.Closed)
				{
					_logger.Info("The connection has already been closed.");
					return;
				}
				_readyState = WebSocketState.Closing;
			}
			_logger.Trace("Begin closing the connection.");
			bool flag = frameAsBytes != null && sendBytes(frameAsBytes);
			bool flag2 = flag && _receivingExited != null && _receivingExited.WaitOne(_waitTime);
			bool flag3 = flag && flag2;
			_logger.Debug($"Was clean?: {flag3}\n  sent: {flag}\n  received: {flag2}");
			releaseServerResources();
			releaseCommonResources();
			_logger.Trace("End closing the connection.");
			_readyState = WebSocketState.Closed;
			CloseEventArgs closeEventArgs = new CloseEventArgs(payloadData);
			closeEventArgs.WasClean = flag3;
			try
			{
				this.OnClose.Emit(this, closeEventArgs);
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
			}
		}

		internal void Close(CloseEventArgs e, byte[] frameAsBytes, bool receive)
		{
			lock (_forState)
			{
				if (_readyState == WebSocketState.Closing)
				{
					_logger.Info("The closing is already in progress.");
					return;
				}
				if (_readyState == WebSocketState.Closed)
				{
					_logger.Info("The connection has already been closed.");
					return;
				}
				_readyState = WebSocketState.Closing;
			}
			e.WasClean = closeHandshake(frameAsBytes, receive, received: false);
			releaseServerResources();
			releaseCommonResources();
			_readyState = WebSocketState.Closed;
			try
			{
				this.OnClose.Emit(this, e);
			}
			catch (Exception ex)
			{
				_logger.Error(ex.ToString());
			}
		}

		internal static string CreateBase64Key()
		{
			byte[] array = new byte[16];
			RandomNumber.GetBytes(array);
			return Convert.ToBase64String(array);
		}

		internal static string CreateResponseKey(string base64Key)
		{
			StringBuilder stringBuilder = new StringBuilder(base64Key, 64);
			stringBuilder.Append("258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
			SHA1 sHA = new SHA1CryptoServiceProvider();
			byte[] inArray = sHA.ComputeHash(stringBuilder.ToString().UTF8Encode());
			return Convert.ToBase64String(inArray);
		}

		internal void InternalAccept()
		{
			try
			{
				if (!acceptHandshake())
				{
					return;
				}
				_readyState = WebSocketState.Open;
			}
			catch (Exception ex)
			{
				_logger.Fatal(ex.ToString());
				fatal("An exception has occurred while accepting.", ex);
				return;
			}
			open();
		}

		internal bool Ping(byte[] frameAsBytes, TimeSpan timeout)
		{
			if (_readyState != WebSocketState.Open)
			{
				return false;
			}
			ManualResetEvent pongReceived = _pongReceived;
			if (pongReceived == null)
			{
				return false;
			}
			lock (_forPing)
			{
				try
				{
					pongReceived.Reset();
					lock (_forState)
					{
						if (_readyState != WebSocketState.Open)
						{
							_logger.Error("The state of the connection has been changed.");
							return false;
						}
						if (!sendBytes(frameAsBytes))
						{
							return false;
						}
					}
					return pongReceived.WaitOne(timeout);
				}
				catch (ObjectDisposedException)
				{
					return false;
				}
			}
		}

		internal void Send(Opcode opcode, byte[] data, Dictionary<CompressionMethod, byte[]> cache)
		{
			lock (_forSend)
			{
				lock (_forState)
				{
					if (_readyState != WebSocketState.Open)
					{
						_logger.Error("The state of the connection has been changed.");
						return;
					}
					try
					{
						if (!cache.TryGetValue(_compression, out var value))
						{
							value = new WebSocketFrame(Fin.Final, opcode, data.Compress(_compression), _compression != CompressionMethod.None, mask: false).ToArray();
							cache.Add(_compression, value);
						}
						sendBytes(value);
					}
					catch (Exception ex)
					{
						_logger.Error(ex.ToString());
					}
				}
			}
		}

		internal void Send(Opcode opcode, Stream stream, Dictionary<CompressionMethod, Stream> cache)
		{
			lock (_forSend)
			{
				try
				{
					if (!cache.TryGetValue(_compression, out var value))
					{
						value = stream.Compress(_compression);
						cache.Add(_compression, value);
					}
					else
					{
						value.Position = 0L;
					}
					send(opcode, value, _compression != CompressionMethod.None);
				}
				catch (Exception ex)
				{
					_logger.Error(ex.ToString());
				}
			}
		}

		public void Accept()
		{
			if (!checkIfAvailable(client: false, server: true, connecting: true, open: false, closing: false, closed: false, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in accepting.", null);
			}
			else if (accept())
			{
				open();
			}
		}

		public void AcceptAsync()
		{
			if (!checkIfAvailable(client: false, server: true, connecting: true, open: false, closing: false, closed: false, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in accepting.", null);
				return;
			}
			Func<bool> acceptor = accept;
			acceptor.BeginInvoke(delegate(IAsyncResult ar)
			{
				if (acceptor.EndInvoke(ar))
				{
					open();
				}
			}, null);
		}

		public void Close()
		{
			close(1005, string.Empty);
		}

		public void Close(ushort code)
		{
			if (!CheckParametersForClose(code, null, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				close(code, string.Empty);
			}
		}

		public void Close(CloseStatusCode code)
		{
			if (!CheckParametersForClose(code, null, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				close((ushort)code, string.Empty);
			}
		}

		public void Close(ushort code, string reason)
		{
			if (!CheckParametersForClose(code, reason, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				close(code, reason);
			}
		}

		public void Close(CloseStatusCode code, string reason)
		{
			if (!CheckParametersForClose(code, reason, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				close((ushort)code, reason);
			}
		}

		public void CloseAsync()
		{
			closeAsync(1005, string.Empty);
		}

		public void CloseAsync(ushort code)
		{
			if (!CheckParametersForClose(code, null, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				closeAsync(code, string.Empty);
			}
		}

		public void CloseAsync(CloseStatusCode code)
		{
			if (!CheckParametersForClose(code, null, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				closeAsync((ushort)code, string.Empty);
			}
		}

		public void CloseAsync(ushort code, string reason)
		{
			if (!CheckParametersForClose(code, reason, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				closeAsync(code, reason);
			}
		}

		public void CloseAsync(CloseStatusCode code, string reason)
		{
			if (!CheckParametersForClose(code, reason, _client, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in closing the connection.", null);
			}
			else
			{
				closeAsync((ushort)code, reason);
			}
		}

		public void Connect()
		{
			if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in connecting.", null);
			}
			else if (connect())
			{
				open();
			}
		}

		public void ConnectAsync()
		{
			if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in connecting.", null);
				return;
			}
			Func<bool> connector = connect;
			connector.BeginInvoke(delegate(IAsyncResult ar)
			{
				if (connector.EndInvoke(ar))
				{
					open();
				}
			}, null);
		}

		public bool Ping()
		{
			return ping(EmptyBytes);
		}

		public bool Ping(string message)
		{
			if (message == null)
			{
				throw new ArgumentNullException("message");
			}
			if (!message.TryGetUTF8EncodedBytes(out var bytes))
			{
				throw new ArgumentException("It could not be UTF-8-encoded.", "message");
			}
			if (bytes.Length > 125)
			{
				string text = "Its size is greater than 125 bytes.";
				throw new ArgumentOutOfRangeException("message", text);
			}
			return ping(bytes);
		}

		public void Send(byte[] data)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (data == null)
			{
				throw new ArgumentNullException("data");
			}
			send(Opcode.Binary, new MemoryStream(data));
		}

		public void Send(FileInfo fileInfo)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (fileInfo == null)
			{
				throw new ArgumentNullException("fileInfo");
			}
			if (!fileInfo.Exists)
			{
				throw new ArgumentException("The file does not exist.", "fileInfo");
			}
			if (!fileInfo.TryOpenRead(out var fileStream))
			{
				throw new ArgumentException("The file could not be opened.", "fileInfo");
			}
			send(Opcode.Binary, fileStream);
		}

		public void Send(string data)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (data == null)
			{
				throw new ArgumentNullException("data");
			}
			if (!data.TryGetUTF8EncodedBytes(out var bytes))
			{
				throw new ArgumentException("It could not be UTF-8-encoded.", "data");
			}
			send(Opcode.Text, new MemoryStream(bytes));
		}

		public void Send(Stream stream, int length)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (stream == null)
			{
				throw new ArgumentNullException("stream");
			}
			if (!stream.CanRead)
			{
				throw new ArgumentException("It cannot be read.", "stream");
			}
			if (length < 1)
			{
				throw new ArgumentException("It is less than 1.", "length");
			}
			byte[] array = stream.ReadBytes(length);
			int num = array.Length;
			if (num == 0)
			{
				throw new ArgumentException("No data could be read from it.", "stream");
			}
			if (num < length)
			{
				_logger.Warn($"Only {num} byte(s) of data could be read from the specified stream.");
			}
			send(Opcode.Binary, new MemoryStream(array));
		}

		public void SendAsync(byte[] data, Action<bool> completed)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (data == null)
			{
				throw new ArgumentNullException("data");
			}
			sendAsync(Opcode.Binary, new MemoryStream(data), completed);
		}

		public void SendAsync(FileInfo fileInfo, Action<bool> completed)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (fileInfo == null)
			{
				throw new ArgumentNullException("fileInfo");
			}
			if (!fileInfo.Exists)
			{
				throw new ArgumentException("The file does not exist.", "fileInfo");
			}
			if (!fileInfo.TryOpenRead(out var fileStream))
			{
				throw new ArgumentException("The file could not be opened.", "fileInfo");
			}
			sendAsync(Opcode.Binary, fileStream, completed);
		}

		public void SendAsync(string data, Action<bool> completed)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (data == null)
			{
				throw new ArgumentNullException("data");
			}
			if (!data.TryGetUTF8EncodedBytes(out var bytes))
			{
				throw new ArgumentException("It could not be UTF-8-encoded.", "data");
			}
			sendAsync(Opcode.Text, new MemoryStream(bytes), completed);
		}

		public void SendAsync(Stream stream, int length, Action<bool> completed)
		{
			if (_readyState != WebSocketState.Open)
			{
				string text = "The current state of the connection is not Open.";
				throw new InvalidOperationException(text);
			}
			if (stream == null)
			{
				throw new ArgumentNullException("stream");
			}
			if (!stream.CanRead)
			{
				throw new ArgumentException("It cannot be read.", "stream");
			}
			if (length < 1)
			{
				throw new ArgumentException("It is less than 1.", "length");
			}
			byte[] array = stream.ReadBytes(length);
			int num = array.Length;
			if (num == 0)
			{
				throw new ArgumentException("No data could be read from it.", "stream");
			}
			if (num < length)
			{
				_logger.Warn($"Only {num} byte(s) of data could be read from the specified stream.");
			}
			sendAsync(Opcode.Binary, new MemoryStream(array), completed);
		}

		public void SetCookie(WebSocketSharp.Net.Cookie cookie)
		{
			if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in setting a cookie.", null);
				return;
			}
			if (cookie == null)
			{
				_logger.Error("'cookie' is null.");
				error("An error has occurred in setting a cookie.", null);
				return;
			}
			lock (_forState)
			{
				if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: true, out text))
				{
					_logger.Error(text);
					error("An error has occurred in setting a cookie.", null);
					return;
				}
				lock (_cookies.SyncRoot)
				{
					_cookies.SetOrRemove(cookie);
				}
			}
		}

		public void SetCredentials(string username, string password, bool preAuth)
		{
			if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in setting the credentials.", null);
				return;
			}
			if (!checkParametersForSetCredentials(username, password, out text))
			{
				_logger.Error(text);
				error("An error has occurred in setting the credentials.", null);
				return;
			}
			lock (_forState)
			{
				if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: true, out text))
				{
					_logger.Error(text);
					error("An error has occurred in setting the credentials.", null);
				}
				else if (username.IsNullOrEmpty())
				{
					_logger.Warn("The credentials are initialized.");
					_credentials = null;
					_preAuth = false;
				}
				else
				{
					_credentials = new WebSocketSharp.Net.NetworkCredential(username, password, _uri.PathAndQuery);
					_preAuth = preAuth;
				}
			}
		}

		public void SetProxy(string url, string username, string password)
		{
			if (!checkIfAvailable(client: true, server: false, connecting: true, open: false, closing: false, closed: true, out var text))
			{
				_logger.Error(text);
				error("An error has occurred in setting the proxy.", null);
				return;
			}
			if (!checkParametersForSetProxy(url, username, password, out text))
			{
				_logger.Error(text);
				error("An error has occurred in setting the proxy.", null);
				return;
			}
			lock (_forState)
			{
				if (!checkIfAvailable(connecting: true, open: false, closing: false, closed: true, out text))
				{
					_logger.Error(text);
					error("An error has occurred in setting the proxy.", null);
					return;
				}
				if (url.IsNullOrEmpty())
				{
					_logger.Warn("The url and credentials for the proxy are initialized.");
					_proxyUri = null;
					_proxyCredentials = null;
					return;
				}
				_proxyUri = new Uri(url);
				if (username.IsNullOrEmpty())
				{
					_logger.Warn("The credentials for the proxy are initialized.");
					_proxyCredentials = null;
				}
				else
				{
					_proxyCredentials = new WebSocketSharp.Net.NetworkCredential(username, password, $"{_uri.DnsSafeHost}:{_uri.Port}");
				}
			}
		}

		void IDisposable.Dispose()
		{
			close(1001, string.Empty);
		}
	}
	public enum CloseStatusCode : ushort
	{
		Normal = 1000,
		Away = 1001,
		ProtocolError = 1002,
		UnsupportedData = 1003,
		Undefined = 1004,
		NoStatus = 1005,
		Abnormal = 1006,
		InvalidData = 1007,
		PolicyViolation = 1008,
		TooBig = 1009,
		MandatoryExtension = 1010,
		ServerError = 1011,
		TlsHandshakeFailure = 1015
	}
	internal enum Fin : byte
	{
		More,
		Final
	}
	internal enum Mask : byte
	{
		Off,
		On
	}
	internal enum Opcode : byte
	{
		Cont = 0,
		Text = 1,
		Binary = 2,
		Close = 8,
		Ping = 9,
		Pong = 10
	}
	internal class PayloadData : IEnumerable<byte>, IEnumerable
	{
		private ushort _code;

		priv