DTLS_CTRL_GET_TIMEOUT	73
DTLS_CTRL_HANDLE_TIMEOUT	74
DTLS_CTRL_LISTEN	75
DTLS1_AL_HEADER_LENGTH	2
DTLS1_BAD_VER	256
DTLS1_CCS_HEADER_LENGTH	1
DTLS1_COOKIE_LENGTH	256
DTLS1_HM_BAD_FRAGMENT	-2
DTLS1_HM_FRAGMENT_RETRY	-3
DTLS1_HM_HEADER_LENGTH	12
DTLS1_RT_HEADER_LENGTH	13
DTLS1_TMO_ALERT_COUNT	12
DTLS1_TMO_READ_COUNT	2
DTLS1_TMO_WRITE_COUNT	2
DTLS1_VERSION	65279