socket.h

#pragma once
 
#include <stdint.h>
#include <sys/time.h>
 
#define SOL_SOCKET      0xFFFF
 
#define PF_UNSPEC       0
#define PF_INET         2
#define PF_INET6        23
 
#define AF_UNSPEC       PF_UNSPEC
#define AF_INET         PF_INET
#define AF_INET6        PF_INET6
 
#define SOCK_STREAM     1
#define SOCK_DGRAM      2
 
// any flags > 0x4 causes send/recv to return EOPNOTSUPP
#define MSG_OOB         0x0001
#define MSG_PEEK        0x0002
#define MSG_DONTWAIT    0x0004
#define MSG_DONTROUTE   0x0000  // ???
#define MSG_WAITALL     0x0000  // ???
#define MSG_MORE        0x0000  // ???
#define MSG_NOSIGNAL    0x0000  // there are no signals
 
#define SHUT_RD         0
#define SHUT_WR         1
#define SHUT_RDWR       2
 
/*
 * SOL_SOCKET options
 */
#define SO_REUSEADDR    0x0004      // reuse address
#define SO_LINGER       0x0080      // linger (no effect?)
#define SO_OOBINLINE    0x0100      // out-of-band data inline (no effect?)
#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_TYPE         0x1008      // get socket type
#define SO_ERROR        0x1009      // get socket error
 
#define SO_BROADCAST    0x0000      // unrequired, included for compatibility
 
#define _SOCKLEN_T_DECLARED
 
typedef uint32_t socklen_t;
typedef uint16_t sa_family_t;
 
struct sockaddr {
    sa_family_t sa_family;
    char        sa_data[];
};
 
// biggest size on 3ds is 0x1C (sockaddr_in6)
struct sockaddr_storage {
    sa_family_t ss_family;
    char        __ss_padding[26];
};
 
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     closesocket(int sockfd);
    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