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/CompressionMethod.cs

@@ -0,0 +1,29 @@
+namespace EmbedIO
+{
+    /// <summary>
+    /// Specifies the compression method used to compress a message on
+    /// the WebSocket connection.
+    /// </summary>
+    /// <remarks>
+    /// The compression methods that can be used are defined in
+    /// <see href="https://tools.ietf.org/html/rfc7692">
+    /// Compression Extensions for WebSocket</see>.
+    /// </remarks>
+    public enum CompressionMethod : byte
+    {
+        /// <summary>
+        /// Specifies no compression.
+        /// </summary>
+        None,
+
+        /// <summary>
+        /// Specifies "Deflate" compression.
+        /// </summary>
+        Deflate,
+
+        /// <summary>
+        /// Specifies GZip compression.
+        /// </summary>
+        Gzip,
+    }
+}