+#define TCP_MAXSEG 2
+#define TCP_CORK 3
+#define TCP_KEEPIDLE 4
+#define TCP_KEEPINTVL 5
+#define TCP_KEEPCNT 6
+#define TCP_SYNCNT 7
+#define TCP_LINGER2 8
+#define TCP_DEFER_ACCEPT 9
+#define TCP_WINDOW_CLAMP 10
+#define TCP_INFO 11
+#define TCP_QUICKACK 12
+#define TCP_CONGESTION 13
+#define TCP_MD5SIG 14
+#define TCP_COOKIE_TRANSACTIONS 15
+#define TCP_THIN_LINEAR_TIMEOUTS 16
+#define TCP_THIN_DUPACK 17
+#define TCP_USER_TIMEOUT 18
+#define TCP_REPAIR 19
+#define TCP_REPAIR_QUEUE 20
+#define TCP_QUEUE_SEQ 21
+#define TCP_REPAIR_OPTIONS 22
+#define TCP_FASTOPEN 23
+#define TCP_TIMESTAMP 24
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define SOL_TCP 6
+#include <sys/types.h>
+#include <sys/socket.h>
+#endif