getReqInfo method

Implementation

@override
Future<ReqInfo> getReqInfo() async {
  List<int> resultContent = <int>[];
  ReqInfo result = ReqInfo(
    contentType: "multipart/form-data; boundary=$boundary",
    content: resultContent,
  );
  for (var contentItem in contents.entries) {
    var key = contentItem.key;
    var value = contentItem.value;
    if (value is File) {
      var fileName = basename(value.path);
      var data = '--$boundary\r\n'
          'Content-Disposition:form-data;name="$key";filename="$fileName"\r\n'
          'Content-Type:application/octet-stream\r\n\r\n';
      var content = await value.readAsBytes();
      resultContent
        ..addAll(Utf8Encoder().convert(data))
        ..addAll(content)
        ..addAll("\r\n".codeUnits);
    } else {
      var data = '--$boundary\r\n'
          'Content-Disposition: form-data; name="$key";\r\n\r\n'
          '$value\r\n';
      resultContent.addAll(Utf8Encoder().convert(data));
    }
  }
  resultContent.addAll("--$boundary--".codeUnits);
  return result;
}