map: provide user-agent header for OSM/Stamer

android/app/src/main/kotlin/deckers/thibault/aves/channel/streams/StorageAccessStreamHandler.kt

@@ -171,6 +171,7 @@ class StorageAccessStreamHandler(private val activity: Activity, arguments: Any?
             })
             activity.startActivityForResult(intent, MainActivity.SELECT_DIRECTORY_REQUEST)
         } else {
+            // TODO TLAD support KitKat
             success(null)
             endOfStream()
         }

lib/widgets/aves_app.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:ui';
 
 import 'package:aves/app_flavor.dart';
@@ -27,12 +28,15 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:overlay_support/overlay_support.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 import 'package:provider/provider.dart';
 import 'package:tuple/tuple.dart';
 
 class AvesApp extends StatefulWidget {
   final AppFlavor flavor;
 
+  static String userAgent = '';
+
   const AvesApp({
     Key? key,
     required this.flavor,
@@ -161,6 +165,7 @@ class _AvesAppState extends State<AvesApp> {
       isRotationLocked: await windowService.isRotationLocked(),
       areAnimationsRemoved: await AccessibilityService.areAnimationsRemoved(),
     );
+    unawaited(_initUserAgent());
     FijkLog.setLevel(FijkLogLevel.Warn);
 
     // keep screen on
@@ -205,6 +210,11 @@ class _AvesAppState extends State<AvesApp> {
     ];
   }
 
+  Future<void> _initUserAgent() async {
+    final info = await PackageInfo.fromPlatform();
+    AvesApp.userAgent = '${info.packageName}/${info.version}';
+  }
+
   void _onNewIntent(Map? intentData) {
     debugPrint('$runtimeType onNewIntent with intentData=$intentData');
 

lib/widgets/common/map/leaflet/tile_layers.dart

@@ -1,3 +1,4 @@
+import 'package:aves/widgets/aves_app.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:provider/provider.dart';
@@ -11,6 +12,7 @@ class OSMHotLayer extends StatelessWidget {
       options: TileLayerOptions(
         urlTemplate: 'https://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png',
         subdomains: ['a', 'b', 'c'],
+        tileProvider: _NetworkTileProvider(),
         retinaMode: context.select<MediaQueryData, double>((mq) => mq.devicePixelRatio) > 1,
       ),
     );
@@ -26,6 +28,7 @@ class StamenTonerLayer extends StatelessWidget {
       options: TileLayerOptions(
         urlTemplate: 'https://stamen-tiles-{s}.a.ssl.fastly.net/toner-lite/{z}/{x}/{y}{r}.png',
         subdomains: ['a', 'b', 'c', 'd'],
+        tileProvider: _NetworkTileProvider(),
         retinaMode: context.select<MediaQueryData, double>((mq) => mq.devicePixelRatio) > 1,
       ),
     );
@@ -41,8 +44,22 @@ class StamenWatercolorLayer extends StatelessWidget {
       options: TileLayerOptions(
         urlTemplate: 'https://stamen-tiles-{s}.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.jpg',
         subdomains: ['a', 'b', 'c', 'd'],
+        tileProvider: _NetworkTileProvider(),
         retinaMode: context.select<MediaQueryData, double>((mq) => mq.devicePixelRatio) > 1,
       ),
     );
   }
 }
+
+class _NetworkTileProvider extends NetworkTileProvider {
+  final Map<String, String> headers = {
+    'User-Agent': AvesApp.userAgent,
+  };
+
+  _NetworkTileProvider();
+
+  @override
+  ImageProvider getImage(Coords<num> coords, TileLayerOptions options) {
+    return NetworkImage(getTileUrl(coords, options), headers: headers);
+  }
+}