#ifndef SOCKET_H
#define SOCKET_H
/*=========================================================================*\
* Socket compatibilization module
* LuaSocket toolkit
*
* BSD Sockets and WinSock are similar, but there are a few irritating
* differences. Also, not all *nix platforms behave the same. This module
* (and the associated usocket.h and wsocket.h) factor these differences and
* creates a interface compatible with the io.h module.
\*=========================================================================*/
#include "io.h"

/*=========================================================================*\
* Platform specific compatibilization
\*=========================================================================*/
#ifdef _WIN32
#include "wsocket.h"
#else
#include "usocket.h"
#endif

/*=========================================================================*\
* The connect and accept functions accept a timeout and their
* implementations are somewhat complicated. We chose to move
* the timeout control into this module for these functions in
* order to simplify the modules that use them. 
\*=========================================================================*/
#include "timeout.h"

/* we are lazy... */
typedef struct sockaddr SA;

/*=========================================================================*\
* Functions bellow implement a comfortable platform independent 
* interface to sockets
\*=========================================================================*/
int socket_open(void);
int socket_close(void);
void socket_destroy(p_socket ps);
void socket_shutdown(p_socket ps, int how);
int socket_sendto(p_socket ps, const char* data, size_t count,
                  size_t* sent, SA* addr, socklen_t addr_len, p_timeout tm);
int socket_recvfrom(p_socket ps, char* data, size_t count,
                    size_t* got, SA* addr, socklen_t* addr_len, p_timeout tm);

void socket_setnonblocking(p_socket ps);
void socket_setblocking(p_socket ps);

int socket_waitfd(p_socket ps, int sw, p_timeout tm);
int socket_select(t_socket n, fd_set* rfds, fd_set* wfds, fd_set* efds,
                  p_timeout tm);

int socket_connect(p_socket ps, SA* addr, socklen_t addr_len, p_timeout tm);
int socket_create(p_socket ps, int domain, int type, int protocol);
int socket_bind(p_socket ps, SA* addr, socklen_t addr_len);
int socket_listen(p_socket ps, int backlog);
int socket_accept(p_socket ps, p_socket pa, SA* addr,
                  socklen_t* addr_len, p_timeout tm);

const char* socket_hoststrerror(int err);
const char* socket_gaistrerror(int err);
const char* socket_strerror(int err);

/* these are perfect to use with the io abstraction module 
   and the buffered input module */
int socket_send(p_socket ps, const char* data, size_t count,
                size_t* sent, p_timeout tm);
int socket_recv(p_socket ps, char* data, size_t count, size_t* got, p_timeout tm);
int socket_write(p_socket ps, const char* data, size_t count,
                 size_t* sent, p_timeout tm);
int socket_read(p_socket ps, char* data, size_t count, size_t* got, p_timeout tm);
const char* socket_ioerror(p_socket ps, int err);

int socket_gethostbyaddr(const char* addr, socklen_t len, struct hostent** hp);
int socket_gethostbyname(const char* addr, struct hostent** hp);

#endif /* SOCKET_H */