BIO_SOCK_TFO
options |= BIO_SOCK_TFO;
sock_options |= BIO_SOCK_TFO;
if (options & BIO_SOCK_TFO) {
if ((options & BIO_SOCK_TFO) && socktype != SOCK_DGRAM) {
data->bind_mode |= BIO_SOCK_TFO;
data->bind_mode &= ~BIO_SOCK_TFO;
data->connect_mode |= BIO_SOCK_TFO;
data->connect_mode &= ~BIO_SOCK_TFO;
if (num & BIO_SOCK_TFO)
server_flags |= BIO_SOCK_TFO;
client_flags |= BIO_SOCK_TFO;
client_flags |= BIO_SOCK_TFO;
server_flags |= BIO_SOCK_TFO;