Built-in topic block normal pub/sub data

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Tue, 03/28/2023 - 05:20
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QWang
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Joined: 01/03/2023
Posts: 10
Built-in topic block normal pub/sub data

Hi,

I add a function to get DDS_ParticipantBuiltinTopicData in the HelloWorld_dpde example. So the basic steps are:

 1. Print new found participant info (e.g. DCPS key) by install the listenser :

builtin_participant_listener.on_data_available = BuiltinParticipantListener_on_data_available;

retcode = DDS_DataReader_set_listener( builtin_participant_datareader, &builtin_participant_listener, DDS_DATA_AVAILABLE_STATUS);

2. Start normal Pub/Sub workflow:

on publisher:

datawriter_listener.on_publication_matched = HelloWorldPublisher_on_publication_matched;

on subscriber:

datareader_listener.on_data_available = HelloWorldSubscriber_on_data_available;
datareader_listener.on_subscription_matched = HelloWorldSubscriber_on_subscription_matched;

The problem is whenever I enable the DataReaderLister for the  ParticipantBuiltinTopicData, no match and communication between he publisher and the subscriber, without showing any errors. If I disable the DataReaderLister for the  ParticipantBuiltinTopicData, pub/sub works ok.

Could anyone help to figure this problem please?

Thanks a lot.

Qian

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