TRON -> TRON_MAINNET

frontend/pshared/lib/utils/http/requests.dart

@@ -163,3 +163,49 @@ Future<FileUploaded?> getFileUploadResponse(String service, String url, String f
   final streamedResponse = await _fileUploadRequest(service, url, fileName, fileType, mediaType, bytes, authToken: authToken);
   return FileUploaded.fromJson(await _handleResponse(http.Response.fromStream(streamedResponse)));
 }
+
+class BinaryResponse {
+  final List<int> bytes;
+  final Map<String, String> headers;
+  final int statusCode;
+
+  const BinaryResponse({
+    required this.bytes,
+    required this.headers,
+    required this.statusCode,
+  });
+
+  String? header(String key) => headers[key.toLowerCase()];
+}
+
+Future<BinaryResponse> getBinaryGETResponse(String service, String url, {String? authToken}) async {
+  late http.Response response;
+  try {
+    response = await getRequest(service, url, authToken: authToken);
+  } catch (e) {
+    throw ConnectivityError(message: e.toString());
+  }
+
+  if (response.statusCode < 200 || response.statusCode >= 300) {
+    late HTTPMessage message;
+    try {
+      message = HTTPMessage.fromJson(json.decode(response.body));
+    } catch (e) {
+      _throwConnectivityError(response, e);
+    }
+
+    late ErrorResponse error;
+    try {
+      error = ErrorResponse.fromJson(message.data);
+    } catch (e) {
+      _throwConnectivityError(response, e);
+    }
+    throw error;
+  }
+
+  return BinaryResponse(
+    bytes: response.bodyBytes,
+    headers: response.headers,
+    statusCode: response.statusCode,
+  );
+}