Fix Absolute Uri Platform Differencies

Author: mckaragoz

src/CodeBeam.UltimateAuth.Server/Infrastructure/Redirect/AuthRedirectResolver.cs

@@ -29,7 +29,7 @@ private RedirectDecision Resolve(AuthFlowContext flow, HttpContext ctx, string?
 
         if (redirect.AllowReturnUrlOverride && flow.ReturnUrlInfo is { } info)
         {
-            if (info.IsAbsolute)
+            if (info.IsAbsolute && (info.AbsoluteUri!.Scheme == Uri.UriSchemeHttp || info.AbsoluteUri!.Scheme == Uri.UriSchemeHttps))
             {
                 var origin = info.AbsoluteUri!.GetLeftPart(UriPartial.Authority);
                 ValidateAllowed(origin, flow.OriginalOptions);
@@ -39,8 +39,7 @@ private RedirectDecision Resolve(AuthFlowContext flow, HttpContext ctx, string?
             if (!string.IsNullOrWhiteSpace(info.RelativePath))
             {
                 var baseAddress = _baseAddressResolver.Resolve(ctx, flow.OriginalOptions);
-                return RedirectDecision.To(
-                    UrlComposer.Combine(baseAddress, info.RelativePath));
+                return RedirectDecision.To(UrlComposer.Combine(baseAddress, info.RelativePath));
             }
         }
 

tests/CodeBeam.UltimateAuth.Tests.Unit/Server/RedirectTests.cs

@@ -125,7 +125,6 @@ public void Relative_ReturnUrl_Is_Combined_With_BaseAddress()
         var ctx = TestHttpContext.Create(); // https://app.example.com
 
         var decision = resolver.ResolveSuccess(flow, ctx);
-
         decision.TargetUrl.Should().Be("https://app.example.com/dashboard");
     }