using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using UnityEngine.Scripting;

namespace UnityEngine.Networking
{
	// Token: 0x02000294 RID: 660
	[StructLayout(LayoutKind.Sequential)]
	public class DownloadHandler : IDisposable
	{
		// Token: 0x06002D27 RID: 11559 RVA: 0x0003FE70 File Offset: 0x0003E070
		internal DownloadHandler()
		{
		}

		// Token: 0x06002D28 RID: 11560
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		internal extern void InternalCreateBuffer();

		// Token: 0x06002D29 RID: 11561
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		internal extern void InternalCreateScript();

		// Token: 0x06002D2A RID: 11562
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		internal extern void InternalCreateAssetBundle(string url, uint crc);

		// Token: 0x06002D2B RID: 11563 RVA: 0x0003FE7C File Offset: 0x0003E07C
		internal void InternalCreateAssetBundleCached(string url, string name, Hash128 hash, uint crc)
		{
			DownloadHandler.INTERNAL_CALL_InternalCreateAssetBundleCached(this, url, name, ref hash, crc);
		}

		// Token: 0x06002D2C RID: 11564
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		private static extern void INTERNAL_CALL_InternalCreateAssetBundleCached(DownloadHandler self, string url, string name, ref Hash128 hash, uint crc);

		// Token: 0x06002D2D RID: 11565
		[ThreadAndSerializationSafe]
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		private extern void InternalDestroy();

		// Token: 0x06002D2E RID: 11566 RVA: 0x0003FE8C File Offset: 0x0003E08C
		~DownloadHandler()
		{
			this.InternalDestroy();
		}

		// Token: 0x06002D2F RID: 11567 RVA: 0x0003FEBC File Offset: 0x0003E0BC
		public void Dispose()
		{
			this.InternalDestroy();
			GC.SuppressFinalize(this);
		}

		// Token: 0x17000A41 RID: 2625
		// (get) Token: 0x06002D30 RID: 11568
		public extern bool isDone
		{
			[GeneratedByOldBindingsGenerator]
			[MethodImpl(MethodImplOptions.InternalCall)]
			get;
		}

		// Token: 0x17000A42 RID: 2626
		// (get) Token: 0x06002D31 RID: 11569 RVA: 0x0003FECC File Offset: 0x0003E0CC
		public byte[] data
		{
			get
			{
				return this.GetData();
			}
		}

		// Token: 0x17000A43 RID: 2627
		// (get) Token: 0x06002D32 RID: 11570 RVA: 0x0003FEE8 File Offset: 0x0003E0E8
		public string text
		{
			get
			{
				return this.GetText();
			}
		}

		// Token: 0x06002D33 RID: 11571 RVA: 0x0003FF04 File Offset: 0x0003E104
		protected virtual byte[] GetData()
		{
			return null;
		}

		// Token: 0x06002D34 RID: 11572 RVA: 0x0003FF1C File Offset: 0x0003E11C
		protected virtual string GetText()
		{
			byte[] data = this.GetData();
			string text;
			if (data != null && data.Length > 0)
			{
				text = this.GetTextEncoder().GetString(data, 0, data.Length);
			}
			else
			{
				text = "";
			}
			return text;
		}

		// Token: 0x06002D35 RID: 11573 RVA: 0x0003FF64 File Offset: 0x0003E164
		private Encoding GetTextEncoder()
		{
			string contentType = this.GetContentType();
			if (!string.IsNullOrEmpty(contentType))
			{
				int num = contentType.IndexOf("charset", StringComparison.OrdinalIgnoreCase);
				if (num > -1)
				{
					int num2 = contentType.IndexOf('=', num);
					if (num2 > -1)
					{
						string text = contentType.Substring(num2 + 1).Trim().Trim(new char[] { '\'', '"' })
							.Trim();
						int num3 = text.IndexOf(';');
						if (num3 > -1)
						{
							text = text.Substring(0, num3);
						}
						try
						{
							return Encoding.GetEncoding(text);
						}
						catch (ArgumentException ex)
						{
							Debug.LogWarning(string.Format("Unsupported encoding '{0}': {1}", text, ex.Message));
						}
					}
				}
			}
			return Encoding.UTF8;
		}

		// Token: 0x06002D36 RID: 11574
		[GeneratedByOldBindingsGenerator]
		[MethodImpl(MethodImplOptions.InternalCall)]
		private extern string GetContentType();

		// Token: 0x06002D37 RID: 11575 RVA: 0x00040040 File Offset: 0x0003E240
		[UsedByNativeCode]
		protected virtual bool ReceiveData(byte[] data, int dataLength)
		{
			return true;
		}

		// Token: 0x06002D38 RID: 11576 RVA: 0x00040058 File Offset: 0x0003E258
		[UsedByNativeCode]
		protected virtual void ReceiveContentLength(int contentLength)
		{
		}

		// Token: 0x06002D39 RID: 11577 RVA: 0x0004005C File Offset: 0x0003E25C
		[UsedByNativeCode]
		protected virtual void CompleteContent()
		{
		}

		// Token: 0x06002D3A RID: 11578 RVA: 0x00040060 File Offset: 0x0003E260
		[UsedByNativeCode]
		protected virtual float GetProgress()
		{
			return 0f;
		}

		// Token: 0x06002D3B RID: 11579 RVA: 0x0004007C File Offset: 0x0003E27C
		protected static T GetCheckedDownloader<T>(UnityWebRequest www) where T : DownloadHandler
		{
			if (www == null)
			{
				throw new NullReferenceException("Cannot get content from a null UnityWebRequest object");
			}
			if (!www.isDone)
			{
				throw new InvalidOperationException("Cannot get content from an unfinished UnityWebRequest object");
			}
			if (www.isNetworkError)
			{
				throw new InvalidOperationException(www.error);
			}
			return (T)((object)www.downloadHandler);
		}

		// Token: 0x040008A3 RID: 2211
		[NonSerialized]
		internal IntPtr m_Ptr;
	}
}