Parsed url to check host

FitConnect/Router.cs

@@ -70,8 +70,11 @@ public class Router : IRouter {
                 Base64UrlEncoder.Decode(signature.EncodedPayload));
 
         string? submissionHost = payload?.submissionHost;
-        return submissionHost != null &&
-               route.DestinationParameters.SubmissionUrl.EndsWith(submissionHost);
+        if (submissionHost == null) return false;
+
+        var destinationUri = new Uri(route.DestinationParameters.SubmissionUrl);
+
+        return destinationUri.Host == submissionHost;
     }
 
     private async Task<bool> VerifyDestinationParametersSignature(Route route) {