add AppConfig.httpProxy

lib/config/app_config.dart

@@ -15,6 +15,8 @@ abstract class AppConfig {
   static bool enableGradient = true;
   static bool cleanExif = true;
 
+
+  static String? httpProxy;
   static String get defaultHomeserver => _defaultHomeserver;
   static double fontSizeFactor = 1;
   static const Color chatColor = primaryColor;

lib/config/setting_keys.dart

@@ -1,6 +1,7 @@
 import 'package:shared_preferences/shared_preferences.dart';
 
 abstract class SettingKeys {
+  static const String httpProxy = 'xyz.extera.next.httpProxy';
   static const String cleanExif = 'xyz.extera.next.cleanExif';
   static const String displayNavigationRail = 'chat.fluffy.displayNavigationRail';
   static const String hideAvatarsInInvites = 'xyz.extera.next.hideAvatarsInInvites';

lib/utils/client_manager.dart

@@ -115,7 +115,7 @@ abstract class ClientManager {
     return Client(
       clientName,
       httpClient:
-          PlatformInfos.isAndroid ? CustomHttpClient.createHTTPClient() : null,
+          CustomHttpClient.createHTTPClient(),
       verificationMethods: {
         KeyVerificationMethod.numbers,
         if (kIsWeb || PlatformInfos.isMobile || PlatformInfos.isLinux)

lib/utils/custom_http_client.dart

@@ -1,29 +1,43 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:extera_next/config/app_config.dart';
+import 'package:extera_next/utils/platform_infos.dart';
 import 'package:http/http.dart' as http;
 import 'package:http/io_client.dart';
 
 import 'package:extera_next/config/isrg_x1.dart';
 
 class CustomHttpClient {
-  static HttpClient customHttpClient(String? cert) {
+  static HttpClient? customHttpClient(String? cert) {
+    if (PlatformInfos.isWeb) return null;
+
     final context = SecurityContext.defaultContext;
 
-    try {
-      if (cert != null) {
-        final bytes = utf8.encode(cert);
-        context.setTrustedCertificatesBytes(bytes);
-      }
-    } on TlsException catch (e) {
-      if (e.osError != null &&
-          e.osError!.message.contains('CERT_ALREADY_IN_HASH_TABLE')) {
-      } else {
-        rethrow;
+    if (PlatformInfos.isAndroid) {
+      try {
+        if (cert != null) {
+          final bytes = utf8.encode(cert);
+          context.setTrustedCertificatesBytes(bytes);
+        }
+      } on TlsException catch (e) {
+        if (e.osError != null &&
+            e.osError!.message.contains('CERT_ALREADY_IN_HASH_TABLE')) {
+        } else {
+          rethrow;
+        }
       }
     }
 
-    return HttpClient(context: context);
+    final client = HttpClient(context: context);
+
+    if (AppConfig.httpProxy != null) {
+      client.findProxy = (uri) {
+        return "PROXY ${AppConfig.httpProxy};";
+      };
+    }
+
+    return client;
   }
 
   static http.Client createHTTPClient() => IOClient(customHttpClient(ISRG_X1));