When using the above QoS profile, Connext DDS will load the ZRTPS transport plug-in from the library, rtizrtps.dll on Windows systems, or rtizrtps.so on Linux systems and call the function ZRTPS_Transport_create_plugin to create the ZRTPS transport.
The ZRTPS transport is designed to work over the Connext DDS UDPv4 transport. The auto- matic mode described previously is set in the ZRTPS transport and the compression level for all compression algorithms is set to 9. The ZRTPS transport will be registered in Connext DDS with the participant that uses this QoS profile.
Note: Connext DDS does not assign initial peers to the ZRTPS transport plug-in. You can set the ini- tial peers with NDDS_DISCOVERY_PEERS, as described in the chapter on Discovery in the RTI Connext DDS Core Libraries User’s Manual. The ZRTPS transport plug-in example uses the NDDS_DISCOVERY_PEERS file to set the multicast address, zrtps.udpv4://239.255.0.1.