Got at least one data fetching method working; turns out, we can't use a patched LogicStack to get the data

Vendor/EmbedIO-3.5.2/Net/Internal/NetExtensions.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Linq;
+using Swan;
+
+namespace EmbedIO.Net.Internal
+{
+    /// <summary>
+    /// Represents some System.NET custom extensions.
+    /// </summary>
+    internal static class NetExtensions
+    {
+        internal static byte[] ToByteArray(this ushort value, Endianness order)
+        {
+            var bytes = BitConverter.GetBytes(value);
+            if (!order.IsHostOrder())
+            {
+                Array.Reverse(bytes);
+            }
+
+            return bytes;
+        }
+
+        internal static byte[] ToByteArray(this ulong value, Endianness order)
+        {
+            var bytes = BitConverter.GetBytes(value);
+            if (!order.IsHostOrder())
+            {
+                Array.Reverse(bytes);
+            }
+
+            return bytes;
+        }
+        
+        internal static byte[] ToHostOrder(this byte[] source, Endianness sourceOrder)
+            => source.Length < 1 ? source 
+            : sourceOrder.IsHostOrder() ? source
+            : source.Reverse().ToArray();
+
+        // true: !(true ^ true) or !(false ^ false)
+        // false: !(true ^ false) or !(false ^ true)
+        private static bool IsHostOrder(this Endianness order)
+            => !(BitConverter.IsLittleEndian ^ (order == Endianness.Little));
+    }
+}