setDefaultRequestHeaders method

Future<void> setDefaultRequestHeaders(Dio dio, RequestOptions options)

Configures default headers which are usually set by DioMixin.

• content-type
• content-length

Implementation

Future<void> setDefaultRequestHeaders(Dio dio, RequestOptions options) async {
  final data = options.data;
  if (data != null &&
      RequestMethods.allowedPayloadMethods
          .contains(RequestMethods.forName(name: options.method))) {
    if (data is FormData) {
      options.headers[Headers.contentTypeHeader] =
          'multipart/form-data; boundary=${data.boundary}';
      options.headers[Headers.contentLengthHeader] = data.length.toString();
    } else {
      final data = await dio.transformer.transformRequest(options);
      List<int> bytes;
      if (options.requestEncoder != null) {
        bytes = await options.requestEncoder!(data, options);
      } else {
        bytes = utf8.encode(data);
      }
      options.headers[Headers.contentLengthHeader] = bytes.length.toString();
    }
  }
}