serializing bytes over json

[aelhadee]

Hello,
I am trying to send bytes rather than a string. I am using the following in the xml file:
<member name="var1" type="short" sequenceMaxLength="9000" key="False" />
and trying to send the bytes using:
output.instance.set_dictionary(dict)

where dict is define as
{"var1": b'bytes to be sent (random)'}

but I get this error
File "/usr/local/lib/python3.8/dist-packages/rticonnextdds_connector/rticonnextdds_connector.py", line 1062, in set_dictionary json_str = json.dumps(dictionary) File "/usr/lib/python3.8/json/__init__.py", line 231, in dumps return _default_encoder.encode(obj) File "/usr/lib/python3.8/json/encoder.py", line 199, in encode chunks = self.iterencode(o, _one_shot=True) File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode return _iterencode(o, 0) File "/usr/lib/python3.8/json/encoder.py", line 179, in default raise TypeError(f'Object of type {o.__class__.__name__} ' TypeError: Object of type bytes is not JSON serializable

and when I use base64 I get his error:
DDS_DynamicDataParser_parse_json_node:!parse json node can DDS_DynamicDataFormatter_from_json_w_params:!parse json node RTILuaDynamicData_set_from_json:DDS_DynamicDataFormatter_from_json_w_params RTILuaMetamethodImpl_OutData:!set from JSON operation failed with retcode 3 RTI_Connector_set_json_instance:!set Failed to set JSON Traceback (most recent call last): File "/usr/local/lib/python3.8/dist-packages/rticonnextdds_connector/rticonnextdds_connector.py", line 1063, in set_dictionary _check_retcode(connector_binding.set_json_instance( File "/usr/local/lib/python3.8/dist-packages/rticonnextdds_connector/rticonnextdds_connector.py", line 89, in _check_retcode raise Error("DDS Exception: " + _get_last_dds_error_message()) rticonnextdds_connector.rticonnextdds_connector.Error: DDS Exception: DDS_DynamicDataParser_parse_json_node:!parse json node can DDS_DynamicDataFormatter_from_json_w_params:!parse json node RTILuaDynamicData_set_from_json:DDS_DynamicDataFormatter_from_json_w_params RTILuaMetamethodImpl_OutData:!set from JSON operation failed with retcode 3 RTI_Connector_set_json_instance:!set Failed to set JSON
Any idea how to get this to work serializing bytes?

Thanks,
AE