no discovery frames yet — add SPDP / SEDP DATA submessages to declare participants and endpoints that later DATA frames can reuse.

FRAME #1

guid prefix

vendor id

version

SM #1

LE

unused

version major

version minor

vendor id

guid prefix (12B)

frame hex (86 bytes)

00007293c69524b9ca19 45bcebfd08004500
00100048123440004011 5a07a030c705a030
0020c7039c439c400034 0000525450530201
00300110a1a2a3a4a5a6 a7a8a9aaabac0c01
00401400000000000201 1001a1a2a3a4a5a6
0050a7a8a9aaabac