setsockopt(sock, IPPROTO_TCP, TCP_FASTOPEN_CONNECT, US &on, sizeof(on));
/* fastopen_blob = NULL; lazy TFO, triggered by data write */
}
setsockopt(sock, IPPROTO_TCP, TCP_FASTOPEN_CONNECT, US &on, sizeof(on));
/* fastopen_blob = NULL; lazy TFO, triggered by data write */
}