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/IHttpRequest.cs

@@ -0,0 +1,115 @@
+using System;
+using System.Collections.Specialized;
+using System.IO;
+using System.Net;
+using System.Text;
+
+namespace EmbedIO
+{
+    /// <inheritdoc />
+    /// <summary>
+    /// Interface to create a HTTP Request.
+    /// </summary>
+    public interface IHttpRequest : IHttpMessage
+    {
+        /// <summary>
+        /// Gets the request headers.
+        /// </summary>
+        NameValueCollection Headers { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether [keep alive].
+        /// </summary>
+        bool KeepAlive { get; }
+
+        /// <summary>
+        /// Gets the raw URL.
+        /// </summary>
+        string RawUrl { get; }
+
+        /// <summary>
+        /// Gets the query string.
+        /// </summary>
+        NameValueCollection QueryString { get; }
+
+        /// <summary>
+        /// Gets the HTTP method.
+        /// </summary>
+        string HttpMethod { get; }
+
+        /// <summary>
+        /// Gets a <see cref="HttpVerbs"/> constant representing the HTTP method of the request.
+        /// </summary>
+        HttpVerbs HttpVerb { get; }
+
+        /// <summary>
+        /// Gets the URL.
+        /// </summary>
+        Uri Url { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance has entity body.
+        /// </summary>
+        bool HasEntityBody { get;  }
+
+        /// <summary>
+        /// Gets the input stream.
+        /// </summary>
+        Stream InputStream { get; }
+
+        /// <summary>
+        /// Gets the content encoding.
+        /// </summary>
+        Encoding ContentEncoding { get; }
+
+        /// <summary>
+        /// Gets the remote end point.
+        /// </summary>
+        IPEndPoint RemoteEndPoint { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is local.
+        /// </summary>
+        bool IsLocal { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this request has been received over a SSL connection.
+        /// </summary>
+        bool IsSecureConnection { get; }
+
+        /// <summary>
+        /// Gets the user agent.
+        /// </summary>
+        string UserAgent { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is web socket request.
+        /// </summary>
+        bool IsWebSocketRequest { get; }
+
+        /// <summary>
+        /// Gets the local end point.
+        /// </summary>
+        IPEndPoint LocalEndPoint { get; }
+
+        /// <summary>
+        /// Gets the type of the content.
+        /// </summary>
+        string? ContentType { get; }
+
+        /// <summary>
+        /// Gets the content length.
+        /// </summary>
+        long ContentLength64 { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is authenticated.
+        /// </summary>
+        bool IsAuthenticated { get; }
+
+        /// <summary>
+        /// Gets the URL referrer.
+        /// </summary>
+        Uri? UrlReferrer { get; }
+    }
+}