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/WebSockets/WebSocketException.cs

@@ -0,0 +1,51 @@
+using System;
+
+namespace EmbedIO.WebSockets
+{
+    /// <summary>
+    /// The exception that is thrown when a WebSocket gets a fatal error.
+    /// </summary>
+#pragma warning disable CA1032 // Implement standard exception constructors - this class doesn't need public constructors.
+    public class WebSocketException : Exception
+#pragma warning restore CA1032
+    {
+        internal WebSocketException(string? message = null) 
+            : this(CloseStatusCode.Abnormal, message)
+        {
+            // Ignore
+        }
+        
+        internal WebSocketException(CloseStatusCode code, Exception? innerException = null)
+            : this(code, null, innerException)
+        {
+        }
+
+        internal WebSocketException(CloseStatusCode code, string? message, Exception? innerException = null)
+            : base(message ?? GetMessage(code), innerException)
+        {
+            Code = code;
+        }
+
+        /// <summary>
+        /// Gets the status code indicating the cause of the exception.
+        /// </summary>
+        /// <value>
+        /// One of the <see cref="CloseStatusCode"/> enum values, represents the status code
+        /// indicating the cause of the exception.
+        /// </value>
+        public CloseStatusCode Code { get; }
+
+        internal static string GetMessage(CloseStatusCode code) => code switch {
+            CloseStatusCode.ProtocolError => "A WebSocket protocol error has occurred.",
+            CloseStatusCode.UnsupportedData => "Unsupported data has been received.",
+            CloseStatusCode.Abnormal => "An exception has occurred.",
+            CloseStatusCode.InvalidData => "Invalid data has been received.",
+            CloseStatusCode.PolicyViolation => "A policy violation has occurred.",
+            CloseStatusCode.TooBig => "A too big message has been received.",
+            CloseStatusCode.MandatoryExtension => "WebSocket client didn't receive expected extension(s).",
+            CloseStatusCode.ServerError => "WebSocket server got an internal error.",
+            CloseStatusCode.TlsHandshakeFailure => "An error has occurred during a TLS handshake.",
+            _ => string.Empty
+        };
+    }
+}