socket.h

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#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
 
typedef uint32_t socklen_t;
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