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#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
#include <features.h>
#define TCP_NODELAY 1
#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_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
#define TCP_NOTSENT_LOWAT 25
#define TCP_ESTABLISHED 1
#define TCP_SYN_SENT 2
#define TCP_SYN_RECV 3
#define TCP_FIN_WAIT1 4
#define TCP_FIN_WAIT2 5
#define TCP_TIME_WAIT 6
#define TCP_CLOSE 7
#define TCP_CLOSE_WAIT 8
#define TCP_LAST_ACK 9
#define TCP_LISTEN 10
#define TCP_CLOSING 11
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define SOL_TCP 6
#include <sys/types.h>
#include <sys/socket.h>
#endif
#ifdef _GNU_SOURCE
#include <endian.h>
struct tcphdr
{
u_int16_t source;
u_int16_t dest;
u_int32_t seq;
u_int32_t ack_seq;
#if __BYTE_ORDER == __LITTLE_ENDIAN
u_int16_t res1:4;
u_int16_t doff:4;
u_int16_t fin:1;
u_int16_t syn:1;
u_int16_t rst:1;
u_int16_t psh:1;
u_int16_t ack:1;
u_int16_t urg:1;
u_int16_t res2:2;
#else
u_int16_t doff:4;
u_int16_t res1:4;
u_int16_t res2:2;
u_int16_t urg:1;
u_int16_t ack:1;
u_int16_t psh:1;
u_int16_t rst:1;
u_int16_t syn:1;
u_int16_t fin:1;
#endif
u_int16_t window;
u_int16_t check;
u_int16_t urg_ptr;
};
#endif
#endif
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