SDP_DREQWAIT
ssk->flags &= ~(SDP_TIMEWAIT | SDP_DREQWAIT);
if ((ssk->flags & SDP_DREQWAIT) == 0)
ssk->flags &= ~SDP_DREQWAIT;
ssk->flags &= ~SDP_DREQWAIT;
if (ssk->flags & (SDP_TIMEWAIT | SDP_DREQWAIT))
ssk->flags |= SDP_NEEDFIN | SDP_DREQWAIT;