BIO_TG_BPS_THROTTLED
if (bio_flagged(bio, BIO_TG_BPS_THROTTLED) ||
!bio_flagged(bio, BIO_TG_BPS_THROTTLED)) {
bio_set_flag(bio, BIO_TG_BPS_THROTTLED);
bio_clear_flag(bio, BIO_TG_BPS_THROTTLED);
bio_flagged(bio, BIO_TG_BPS_THROTTLED))