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/Internal/UriUtility.cs

@@ -0,0 +1,47 @@
+using System;
+
+namespace EmbedIO.Internal
+{
+    internal static class UriUtility
+    {
+        public static Uri StringToUri(string str)
+        {
+            _ = Uri.TryCreate(str, CanBeAbsoluteUrl(str) ? UriKind.Absolute : UriKind.Relative, out var result);
+            return result;
+        }
+
+        public static Uri? StringToAbsoluteUri(string str)
+        {
+            if (!CanBeAbsoluteUrl(str))
+            {
+                return null;
+            }
+
+            _ = Uri.TryCreate(str, UriKind.Absolute, out var result);
+            return result;
+        }
+
+        // Returns true if string starts with "http:", "https:", "ws:", or "wss:"
+        private static bool CanBeAbsoluteUrl(string str)
+            => !string.IsNullOrEmpty(str)
+            && str[0] switch {
+                   'h' => str.Length >= 5
+                       && str[1] == 't'
+                       && str[2] == 't'
+                       && str[3] == 'p'
+                       && str[4] switch {
+                              ':' => true,
+                              's' => str.Length >= 6 && str[5] == ':',
+                              _ => false
+                          },
+                   'w' => str.Length >= 3
+                       && str[1] == 's'
+                       && str[2] switch {
+                              ':' => true,
+                              's' => str.Length >= 4 && str[3] == ':',
+                              _ => false
+                          },
+                   _ => false
+               };
+    }
+}