DDSIRTP26 — Extend InfoSource to contain RTPS HeaderExtension fields

The InfoSource is meant to hold the same information inside the RTPS message such that an RTPS message can be used to relay RTPS submessages from other sources and the RTPS submessages are interpreted in the correct content of the originating Participant.

The RTPS Header Extension submessage was added to extend the RTPS Header in a way that did not break interoperability with existing systems. So logically the information inside RTPS Header Extension belongs in the RTPS Header. Therefore it should also be added to the InfoSource