ensure http response is from cloudflare

Author: DevoTalk

fast cf ip scanner/Services/IPService.cs

@@ -21,7 +21,7 @@ public async Task<List<IPModel>> GetIpValid(string[] ips, IpOptionModel ipOption
             var validIps = new List<IPModel>();
             switch (protcol)
             {
-                case "Http test":
+                case "Http test (recommended)":
                     validIps = await GetValidٌIPWithHttpTest(ips, ipOptions);
                     break;
 
@@ -73,9 +73,12 @@ async Task HttpTest(string ipAddresse)
 
                             if (result != null)
                             {
-                                if (!ports.Any(p => p == port))
+                                if (result.Headers.Contains("Server") && result.Headers.GetValues("Server").Contains("cloudflare"))
                                 {
-                                    ports.Add(port);
+                                    if (!ports.Any(p => p == port))
+                                    {
+                                        ports.Add(port);
+                                    }
                                 }
                             }
                         }

fast cf ip scanner/ViewModels/ScanPageViewModel.cs

@@ -34,7 +34,7 @@ public ScanPageViewModel(IPService iPServices, WorkerService workerService)
         [RelayCommand]
         async void GetValidIPs()
         {
-            var protocols = new string[] { "Http test", "TCP test", "Terminal Ping test" };
+            var protocols = new string[] { "Http test (recommended)", "TCP test", "Terminal Ping test" };
 
             var selectedProtocol =
                 await App.Current.MainPage.DisplayActionSheet("which protocol", "Cancel", null, protocols);