add all

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/util/io/LimitedInputStream.cs

@@ -0,0 +1,60 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Zlib;
+using System;
+using System.IO;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.IO
+{
+    internal class LimitedInputStream
+        : BaseInputStream
+    {
+        private readonly Stream m_stream;
+        private long m_limit;
+
+        internal LimitedInputStream(Stream stream, long limit)
+        {
+            this.m_stream = stream;
+            this.m_limit = limit;
+        }
+
+        internal long CurrentLimit => m_limit;
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            int numRead = m_stream.Read(buffer, offset, count);
+            if (numRead > 0)
+            {
+                if ((m_limit -= numRead) < 0)
+                    throw new StreamOverflowException("Data Overflow");
+            }
+            return numRead;
+        }
+
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public override int Read(Span<byte> buffer)
+        {
+            int numRead = m_stream.Read(buffer);
+            if (numRead > 0)
+            {
+                if ((m_limit -= numRead) < 0)
+                    throw new StreamOverflowException("Data Overflow");
+            }
+            return numRead;
+        }
+#endif
+
+        public override int ReadByte()
+        {
+            int b = m_stream.ReadByte();
+            if (b >= 0)
+            {
+                if (--m_limit < 0)
+                    throw new StreamOverflowException("Data Overflow");
+            }
+            return b;
+        }
+    }
+}
+#pragma warning restore
+#endif