Added missing SCTP_DATA_{LAST_FRAG,NOT_FRAG} flags (#373)
Added missing SCTP_DATA_{LAST_FRAG,NOT_FRAG} flags (#373)

These can be returned by a SCTP_SEND_FAILED_EVENT notification.
See https://tools.ietf.org/html/rfc6458#section-6.1.11
sctplab/usrsctp,CoolmanCZ/usrsctp,CoolmanCZ/usrsctp,sctplab/usrsctp,weinrank/usrsctp,weinrank/usrsctp,weinrank/usrsctp,CoolmanCZ/usrsctp,sctplab/usrsctp,CoolmanCZ/usrsctp