#pragma once
#include <stdint.h>
#include <sys/time.h>

#define SOL_SOCKET     -1

#define PF_UNSPEC      0
#define PF_INET        2

#define AF_UNSPEC      PF_UNSPEC
#define AF_INET        PF_INET

#define SOCK_STREAM    1
#define SOCK_DGRAM     2

#define MSG_OOB        0x0001
#define MSG_PEEK       0x0002
#define MSG_DONTROUTE  0x0004
#define MSG_DONTWAIT   0x0020

#define SHUT_RD        0
#define SHUT_WR        1
#define SHUT_RDWR      2

/*
 * SOL_SOCKET options
 */
#define SO_REUSEADDR   0x0004  // reuse address
#define SO_KEEPALIVE   0x0008  // keep connections alive
#define SO_DONTROUTE   0x0010  // route locally only
#define SO_BROADCAST   0x0020  // broadcast
#define SO_LINGER      0x0080  // linger (no effect?)
#define SO_OOBINLINE   0x0100  // out-of-band data inline (no effect?)
#define SO_TCPSACK     0x0200  // set tcp selective acknowledgment
#define SO_WINSCALE    0x0400  // set tcp window scaling
#define SO_SNDBUF      0x1001  // send buffer size
#define SO_RCVBUF      0x1002  // receive buffer size
#define SO_SNDLOWAT    0x1003  // send low-water mark (no effect?)
#define SO_RCVLOWAT    0x1004  // receive low-water mark
#define SO_ERROR       0x1007  // get socket error
#define SO_TYPE        0x1008  // get socket type
#define SO_HOPCNT      0x1009  // get hop count
#define SO_MAXMSG      0x1010  // same as TCP_MAXSEG
#define SO_RXDATA      0x1011  // get count of bytes in sb_rcv
#define SO_TXDATA      0x1012  // get count of bytes in sb_snd
#define SO_MYADDR      0x1013  // get IP address
#define SO_NBIO        0x1014  // set socket to NON-blocking mode
#define SO_BIO         0x1015  // set socket to blocking mode
#define SO_NONBLOCK    0x1016  // set/get blocking mode via optval param
#define SO_UNKNOWN1019 0x1019  // tcp related
#define SO_UNKNOWN101A 0x101A  // tcp related
#define SO_UNKNOWN101B 0x101B  // tcp related
#define SO_NOSLOWSTART 0x4000  // disable slowstart
#define SO_RUSRBUF     0x10000 // enable somemopt provided memory for receive buffer

#ifndef __socklen_t_defined
typedef __socklen_t socklen_t;
#define __socklen_t_defined
#endif

typedef uint16_t sa_family_t;

struct sockaddr
{
   sa_family_t sa_family;
   char sa_data[];
};

struct sockaddr_storage
{
   sa_family_t ss_family;
   char ss_padding[14];
};

struct linger
{
   int l_onoff;
   int l_linger;
};

#ifdef __cplusplus
extern "C" {
#endif

int
accept(int sockfd,
       struct sockaddr *addr,
       socklen_t *addrlen);

int
bind(int sockfd,
     const struct sockaddr *addr,
     socklen_t addrlen);

int
connect(int sockfd,
        const struct sockaddr *addr,
        socklen_t addrlen);

int
getpeername(int sockfd,
            struct sockaddr *addr,
            socklen_t *addrlen);

int
getsockname(int sockfd,
            struct sockaddr *addr,
            socklen_t *addrlen);

int
getsockopt(int sockfd,
           int level,
           int optname,
           void *optval,
           socklen_t *optlen);

int
listen(int sockfd,
       int backlog);

ssize_t
recv(int sockfd,
     void *buf,
     size_t len,
     int flags);

ssize_t
recvfrom(int sockfd,
         void *buf,
         size_t len,
         int flags,
         struct sockaddr *src_addr,
         socklen_t *addrlen);

ssize_t
send(int sockfd,
     const void *buf,
     size_t len,
     int flags);

ssize_t
sendto(int sockfd,
       const void *buf,
       size_t len,
       int flags,
       const struct sockaddr *dest_addr,
       socklen_t addrlen);

int
setsockopt(int sockfd,
           int level,
           int optname,
           const void *optval,
           socklen_t optlen);

int
shutdown(int sockfd,
         int how);

int
socket(int domain,
       int type,
       int protocol);

int
sockatmark(int sockfd);

#ifdef __cplusplus
}
#endif