DMNCC Short <empty SDP, zero len>
DMNCC Short <terminated SDP str, but len excludes nul>
DMNCC Short <terminated SDP str, but len too short>
DMNCC Short <len way too short>
DMNCC Short <len zero>
DMNCC Short <empty SDP, zero len>
DMNCC Short <terminated SDP str, but len excludes nul>
DMNCC Short <terminated SDP str, but len too short>
DMNCC Short <len way too short>
DMNCC Short <len zero>