using System;
using System.Runtime.InteropServices;
using BestHTTP.Decompression.Zlib;
using BestHTTP.Extensions;
using BestHTTP.WebSocket.Frames;
using Cpp2IlInjected;

namespace BestHTTP.WebSocket.Extensions
{
	// Token: 0x020012F2 RID: 4850
	[Token(Token = "0x20012F2")]
	[StructLayout(3)]
	public sealed class PerMessageCompression : IExtension
	{
		// Token: 0x170013C1 RID: 5057
		// (get) Token: 0x06007982 RID: 31106 RVA: 0x001944E8 File Offset: 0x001926E8
		// (set) Token: 0x06007983 RID: 31107 RVA: 0x001944FC File Offset: 0x001926FC
		[Token(Token = "0x170013C1")]
		public bool ClientNoContextTakeover
		{
			[Token(Token = "0x6007982")]
			[Address(RVA = "0x559440", Offset = "0x557E40", VA = "0x180559440")]
			get;
			[Token(Token = "0x6007983")]
			[Address(RVA = "0x559450", Offset = "0x557E50", VA = "0x180559450")]
			private set;
		}

		// Token: 0x170013C2 RID: 5058
		// (get) Token: 0x06007984 RID: 31108 RVA: 0x00194510 File Offset: 0x00192710
		// (set) Token: 0x06007985 RID: 31109 RVA: 0x00194524 File Offset: 0x00192724
		[Token(Token = "0x170013C2")]
		public bool ServerNoContextTakeover
		{
			[Token(Token = "0x6007984")]
			[Address(RVA = "0x6E4A50", Offset = "0x6E3450", VA = "0x1806E4A50")]
			get;
			[Token(Token = "0x6007985")]
			[Address(RVA = "0x6E4A60", Offset = "0x6E3460", VA = "0x1806E4A60")]
			private set;
		}

		// Token: 0x170013C3 RID: 5059
		// (get) Token: 0x06007986 RID: 31110 RVA: 0x00194538 File Offset: 0x00192738
		// (set) Token: 0x06007987 RID: 31111 RVA: 0x0019454C File Offset: 0x0019274C
		[Token(Token = "0x170013C3")]
		public int ClientMaxWindowBits
		{
			[Token(Token = "0x6007986")]
			[Address(RVA = "0x55D550", Offset = "0x55BF50", VA = "0x18055D550")]
			get;
			[Token(Token = "0x6007987")]
			[Address(RVA = "0x55D5D0", Offset = "0x55BFD0", VA = "0x18055D5D0")]
			private set;
		}

		// Token: 0x170013C4 RID: 5060
		// (get) Token: 0x06007988 RID: 31112 RVA: 0x00194560 File Offset: 0x00192760
		// (set) Token: 0x06007989 RID: 31113 RVA: 0x00194574 File Offset: 0x00192774
		[Token(Token = "0x170013C4")]
		public int ServerMaxWindowBits
		{
			[Token(Token = "0x6007988")]
			[Address(RVA = "0x3EE8D0", Offset = "0x3ED2D0", VA = "0x1803EE8D0")]
			get;
			[Token(Token = "0x6007989")]
			[Address(RVA = "0x4F8C20", Offset = "0x4F7620", VA = "0x1804F8C20")]
			private set;
		}

		// Token: 0x170013C5 RID: 5061
		// (get) Token: 0x0600798A RID: 31114 RVA: 0x00194588 File Offset: 0x00192788
		// (set) Token: 0x0600798B RID: 31115 RVA: 0x0019459C File Offset: 0x0019279C
		[Token(Token = "0x170013C5")]
		public CompressionLevel Level
		{
			[Token(Token = "0x600798A")]
			[Address(RVA = "0x4F8C10", Offset = "0x4F7610", VA = "0x1804F8C10")]
			get;
			[Token(Token = "0x600798B")]
			[Address(RVA = "0x420CD0", Offset = "0x41F6D0", VA = "0x180420CD0")]
			private set;
		}

		// Token: 0x170013C6 RID: 5062
		// (get) Token: 0x0600798C RID: 31116 RVA: 0x001945B0 File Offset: 0x001927B0
		// (set) Token: 0x0600798D RID: 31117 RVA: 0x001945C4 File Offset: 0x001927C4
		[Token(Token = "0x170013C6")]
		public int MinimumDataLegthToCompress
		{
			[Token(Token = "0x600798C")]
			[Address(RVA = "0x4FBD40", Offset = "0x4FA740", VA = "0x1804FBD40")]
			get;
			[Token(Token = "0x600798D")]
			[Address(RVA = "0x4E90F0", Offset = "0x4E7AF0", VA = "0x1804E90F0")]
			set;
		}

		// Token: 0x0600798E RID: 31118 RVA: 0x001945D8 File Offset: 0x001927D8
		[Token(Token = "0x600798E")]
		[Address(RVA = "0x6F3F00", Offset = "0x6F2900", VA = "0x1806F3F00")]
		public PerMessageCompression()
		{
			this.Level = (CompressionLevel)((ulong)6L);
			this.ClientNoContextTakeover = false;
			this.ClientMaxWindowBits = (int)((ulong)15L);
			this.ServerMaxWindowBits = (int)((ulong)15L);
			this.MinimumDataLegthToCompress = (int)((ulong)256L);
		}

		// Token: 0x0600798F RID: 31119 RVA: 0x0019461C File Offset: 0x0019281C
		[Token(Token = "0x600798F")]
		[Address(RVA = "0x6F3EB0", Offset = "0x6F28B0", VA = "0x1806F3EB0")]
		public PerMessageCompression(CompressionLevel level, bool clientNoContextTakeover, bool serverNoContextTakeover, int desiredClientMaxWindowBits, int desiredServerMaxWindowBits, int minDatalengthToCompress)
		{
			this.ClientMaxWindowBits = 0;
			this.ServerMaxWindowBits = 0;
			this.Level = level;
			this.MinimumDataLegthToCompress = 0;
			this.ClientNoContextTakeover = clientNoContextTakeover;
		}

		// Token: 0x06007990 RID: 31120 RVA: 0x00194654 File Offset: 0x00192854
		[Token(Token = "0x6007990")]
		[Address(RVA = "0x6F3340", Offset = "0x6F1D40", VA = "0x1806F3340", Slot = "4")]
		public void AddNegotiation(HTTPRequest request)
		{
			if (this.<ServerNoContextTakeover>k__BackingField)
			{
				string text = "permessage-deflate" + "; server_no_context_takeover";
			}
			if (this.<ClientNoContextTakeover>k__BackingField)
			{
				string text2 = "permessage-deflate" + "; client_no_context_takeover";
			}
			int num = this.<ServerMaxWindowBits>k__BackingField;
			if (num == 15)
			{
				this.<ServerMaxWindowBits>k__BackingField = num;
			}
			string text4;
			string text3;
			if (this.<ClientMaxWindowBits>k__BackingField == 15)
			{
				text3 = text4 + "; client_max_window_bits";
				this.<ClientMaxWindowBits>k__BackingField = (int)((ulong)15L);
			}
			string text5 = text4 + "; client_max_window_bits=" + text3;
			request.AddHeader("Sec-WebSocket-Extensions", text5);
		}

		// Token: 0x06007991 RID: 31121 RVA: 0x0000220F File Offset: 0x0000040F
		[Token(Token = "0x6007991")]
		[Address(RVA = "0x6F3B20", Offset = "0x6F2520", VA = "0x1806F3B20", Slot = "5")]
		public bool ParseNegotiation(WebSocketResponse resp)
		{
			throw new AnalysisFailedException("CPP2IL failed to recover any usable IL for this method.");
		}

		// Token: 0x06007992 RID: 31122 RVA: 0x001946EC File Offset: 0x001928EC
		[Token(Token = "0x6007992")]
		[Address(RVA = "0x6F3AE0", Offset = "0x6F24E0", VA = "0x1806F3AE0", Slot = "6")]
		public byte GetFrameHeader(WebSocketFrame writer, byte inFlag)
		{
			WebSocketFrameTypes <Type>k__BackingField = writer.<Type>k__BackingField;
			if (writer.<Data>k__BackingField != 0)
			{
				int num = this.<MinimumDataLegthToCompress>k__BackingField;
			}
			return inFlag;
		}

		// Token: 0x06007993 RID: 31123 RVA: 0x00194718 File Offset: 0x00192918
		[Token(Token = "0x6007993")]
		[Address(RVA = "0x6F3A30", Offset = "0x6F2430", VA = "0x1806F3A30", Slot = "7")]
		public byte[] Encode(WebSocketFrame writer)
		{
			byte[] <Data>k__BackingField = writer.<Data>k__BackingField;
			if (<Data>k__BackingField != 0)
			{
				return <Data>k__BackingField;
			}
			return VariableSizedBufferPool.NoData;
		}

		// Token: 0x06007994 RID: 31124 RVA: 0x00194750 File Offset: 0x00192950
		[Token(Token = "0x6007994")]
		[Address(RVA = "0x6F3700", Offset = "0x6F2100", VA = "0x1806F3700", Slot = "8")]
		public byte[] Decode(byte header, byte[] data, int length)
		{
			return this.Decompress(data, length);
		}

		// Token: 0x06007995 RID: 31125 RVA: 0x00194768 File Offset: 0x00192968
		[Token(Token = "0x6007995")]
		[Address(RVA = "0x6F3470", Offset = "0x6F1E70", VA = "0x1806F3470")]
		private byte[] Compress(byte[] data, int length)
		{
			int num;
			byte[] array;
			do
			{
				num = 0;
				if (this.compressorOutputStream == 0)
				{
					BufferPoolMemoryStream bufferPoolMemoryStream = new BufferPoolMemoryStream();
					this.compressorOutputStream = bufferPoolMemoryStream;
				}
				if (this.compressorDeflateStream == num)
				{
					CompressionLevel compressionLevel = this.<Level>k__BackingField;
					int num2 = this.<ClientMaxWindowBits>k__BackingField;
					DeflateStream deflateStream;
					this.compressorDeflateStream = deflateStream;
					FlushType flushMode = deflateStream.FlushMode;
				}
				int num3 = this.compressorDeflateStream.ReadByte();
				DeflateStream deflateStream2 = this.compressorDeflateStream;
				long position = this.compressorOutputStream.Position;
				bool canWrite = this.compressorOutputStream.CanWrite;
				array = this.compressorOutputStream.ToArray();
				int num4 = 0;
				if (this.<ClientNoContextTakeover>k__BackingField)
				{
					this.compressorDeflateStream.Dispose();
					this.compressorDeflateStream = (ulong)0L;
				}
				if (num4 != -1)
				{
				}
			}
			while (num != 0);
			return array;
		}

		// Token: 0x06007996 RID: 31126 RVA: 0x00194850 File Offset: 0x00192A50
		[Token(Token = "0x6007996")]
		[Address(RVA = "0x6F3720", Offset = "0x6F2120", VA = "0x1806F3720")]
		private byte[] Decompress(byte[] data, int length)
		{
			BufferPoolMemoryStream bufferPoolMemoryStream = this.decompressorInputStream;
			if (bufferPoolMemoryStream == 0)
			{
				int num;
				BufferPoolMemoryStream bufferPoolMemoryStream2 = new BufferPoolMemoryStream(num);
				num = data.Length;
				num += 4;
				this.decompressorInputStream = bufferPoolMemoryStream2;
			}
			int num2 = bufferPoolMemoryStream.ReadByte();
			BufferPoolMemoryStream bufferPoolMemoryStream3 = this.decompressorInputStream;
			byte[] trailer = PerMessageCompression.Trailer;
			int num3 = bufferPoolMemoryStream3.ReadByte();
			long position = this.decompressorInputStream.Position;
			int num4 = 0;
			if (this.decompressorDeflateStream == num4)
			{
				BufferPoolMemoryStream bufferPoolMemoryStream4 = this.decompressorInputStream;
				int num5 = this.<ServerMaxWindowBits>k__BackingField;
				ulong num6;
				DeflateStream deflateStream = new DeflateStream(bufferPoolMemoryStream4, CompressionMode.Decompress, CompressionLevel.Default, num6 != 0UL, num5);
				this.decompressorDeflateStream = deflateStream;
				FlushType flushMode = deflateStream.FlushMode;
			}
			if (this.decompressorOutputStream == 0)
			{
				BufferPoolMemoryStream bufferPoolMemoryStream5 = new BufferPoolMemoryStream();
				this.decompressorOutputStream = bufferPoolMemoryStream5;
			}
			uint num7;
			ulong num8;
			byte[] array = VariableSizedBufferPool.Get((long)num7, num8 != 0UL);
			DeflateStream deflateStream2 = this.decompressorDeflateStream;
			int num9 = this.decompressorOutputStream.ReadByte();
			VariableSizedBufferPool.Release(array);
			DeflateStream deflateStream3 = this.decompressorDeflateStream;
			byte[] array2 = this.decompressorOutputStream.ToArray();
			if ((this.<ServerNoContextTakeover>k__BackingField ? 1 : 0) != num4)
			{
				this.decompressorDeflateStream.Dispose();
				this.decompressorDeflateStream = num4;
			}
			return array2;
		}

		// Token: 0x06007997 RID: 31127 RVA: 0x00194964 File Offset: 0x00192B64
		// Note: this type is marked as 'beforefieldinit'.
		[Token(Token = "0x6007997")]
		[Address(RVA = "0x6F3E20", Offset = "0x6F2820", VA = "0x1806F3E20")]
		static PerMessageCompression()
		{
			byte[] array = new byte[4];
			array[0] = (byte)((ulong)255L);
			array[0] = (byte)((ulong)255L);
			PerMessageCompression.Trailer = array;
		}

		// Token: 0x040057A7 RID: 22439
		[Token(Token = "0x40057A7")]
		public const int MinDataLengthToCompressDefault = 256;

		// Token: 0x040057A8 RID: 22440
		[Token(Token = "0x40057A8")]
		private static readonly byte[] Trailer;

		// Token: 0x040057AF RID: 22447
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40057AF")]
		private BufferPoolMemoryStream compressorOutputStream;

		// Token: 0x040057B0 RID: 22448
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40057B0")]
		private DeflateStream compressorDeflateStream;

		// Token: 0x040057B1 RID: 22449
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40057B1")]
		private BufferPoolMemoryStream decompressorInputStream;

		// Token: 0x040057B2 RID: 22450
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x40")]
		[Token(Token = "0x40057B2")]
		private BufferPoolMemoryStream decompressorOutputStream;

		// Token: 0x040057B3 RID: 22451
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x48")]
		[Token(Token = "0x40057B3")]
		private DeflateStream decompressorDeflateStream;
	}
}