Problem converting from Fast-RTPS API to Fast-DDS

[mtheall]

I'm trying to move some code off the Fast-RTPS API to the Fast-DDS API. Participant/Publisher/Subscriber discovery appears to work, but I can't get published data to appear on the subscriber (published data appears in wireshark). My code is based on the example generated by fastddsgen -example CMake <file>.idl, which does work.

I have attached source code that loosely demonstrates how we use Fast-RTPS and how I attempted to port it to Fast-DDS.
If you run the program with no arguments, it uses the Fast-DDS implementation. If you run it as ./fast-dds-test rtps it uses the Fast-RTPS implementation.

fast-dds-test.tar.gz

I'm really at a loss for what I'm doing wrong.