B66 final after testing

- Update MapLib to comply with OSM tile policy (2 concurrent DL only)
- Update QuickGuide

FSimMap/MapLib/Properties/AssemblyInfo.cs

@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion( "0.1.0.9" )]
-[assembly: AssemblyFileVersion( "0.1.0.9" )]
+[assembly: AssemblyVersion( "0.2.0.10" )]
+[assembly: AssemblyFileVersion( "0.2.0.10" )]

FSimMap/MapLib/Service/RequestScheduler.cs

@@ -35,7 +35,7 @@ internal sealed class RequestScheduler
     // Worker threads
     // Mem Cache retrieval has a severe penalty for Queued times and processing when more threads are involved (reason unknown)
     // ?? ConcurrentDictionary access ?? 
-    private const int NUM_OF_THREAD_TILE = 8;
+    private const int NUM_OF_THREAD_TILE = 2;  // 20230824  Limit to 2 concurrent loading threads (OSM asks for not more than 2..)
     private const int NUM_OF_THREAD_CACHE = 4;  // Disk Caching may use more..
 
     // the dispatcher

FSimMap/MapLib/Sources/Providers/MapProviderBase.cs

@@ -7,6 +7,7 @@
 using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
+using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -109,10 +110,10 @@ public static void SetServiceStatus( bool enabled )
     static MapProviderBase( )
     {
       WebProxy = BypassWebProxy.Instance;
-      Random = new Random( (int)DateTime.Now.Ticks );
-      UserAgent = string.Format(
-            "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:{0}.0) Gecko/20100101 Firefox/{0}.0",
-            Random.Next( (DateTime.Today.Year - 2012) * 10 - 10, (DateTime.Today.Year - 2012) * 10 ) );
+      // OSM asks for a legit UserAgent ID - so provide one
+      FileVersionInfo fileVersion = FileVersionInfo.GetVersionInfo( Assembly.GetAssembly( typeof( MapProviderBase ) ).Location );
+      // will evaluate into "MapLib/m.n.o.p" e.g "MapLib/0.2.0.10" as of writing.
+      UserAgent = string.Format( $"{fileVersion.ProductName}/{fileVersion.FileVersion}" );
 
       _client.DefaultRequestHeaders.Add( "User-Agent", UserAgent );
       _client.DefaultRequestHeaders.Add( "Accept", requestAccept );
@@ -397,11 +398,18 @@ protected MapImage GetTileImageUsingHttp( string url, MapImageID mapImageID )
           var status = ((HttpWebResponse)(ex as WebException).Response).StatusCode;
           Debug.WriteLine( $"MapProviderBase.GetTileImageUsingHttp: HttpWebResponse Status: {status} ({(int)status})" );
           if ((status == HttpStatusCode.GatewayTimeout) || (status == HttpStatusCode.RequestTimeout)) {
-            retry = true; // can retry on timeout
+            retry = true;
           }
         }
+        else if ((ex is WebException) && ((int)((HttpWebResponse)(ex as WebException).Response).StatusCode == 418)) {
+          // seems OSM responds with the teapot code when blocking...
+          var status = ((HttpWebResponse)(ex as WebException).Response).StatusCode;
+          Debug.WriteLine( $"MapProviderBase.GetTileImageUsingHttp: HttpWebResponse Status: {status} ({(int)status})" );
+          retry = false; // never retry
+        }
         else {
           Debug.WriteLine( $"MapProviderBase.GetTileImageUsingHttp: Response Exception:\n{ex}\nURL:${url}" );
+          retry = false; // never retry
         }
       }
 

ReadMe-FlightBag.txt

@@ -70,6 +70,8 @@ V 0.65-B66
 - Update Improve focus capture and release for scrollable items
 - Update Uses LVar Get via SimVar framework (Set of such LVars still needs the WASM module)
 - Refactoring, complete rework of the DataProvider DLLs 
+- Update MapLib to comply with OSM tile policy (2 concurrent DL only)
+- Update QuickGuide
 
 V 0.64-B64 (not published)
 - Refactoring, complete rework of the DataProvider DLLs 

ReadMe.txt

@@ -87,6 +87,8 @@ V 0.65-B66
 - Update Uses LVar Get via SimVar framework (Set of such LVars still needs the WASM module)
 - Update Review and adjust update interval for each item
 - Refactoring, complete rework of the DataProvider DLLs 
+- Update MapLib to comply with OSM tile policy (2 concurrent DL only)
+- Update QuickGuide
 
 V 0.64-B64 (not published)
 - Refactoring, complete rework of the DataProvider DLLs