TMF_QUEUED
if (session->tmf_state != TMF_QUEUED)
if (session->tmf_state == TMF_QUEUED) {
session->tmf_state != TMF_QUEUED);
session->tmf_state = TMF_QUEUED;
session->tmf_state = TMF_QUEUED;
session->tmf_state = TMF_QUEUED;