#ifndef SOCK_TCP_H
#define SOCK_TCP_H

/**
 * @file
 *
 * TCP implementation of sock_stream interface.
 */
#include "sock_internal.h"
#include <netdb.h>

/**
 * Contains the base sock_stream struct, and the file descriptor
 */
struct sock_tcp {
    /* The base struct for sock_stream_* functions */
    struct sock_stream base;
    
    /* The OS file descriptor */
    int fd;

    /* The IO events */
    struct event *ev_read, *ev_write;
};

/**
 * Get a sock_stream pointer from a sock_tcp pointer
 */
#define SOCK_TCP_BASE(sock_ptr) (&(sock_ptr)->base)

/**
 * Get the sock_stream.err pointer from a sock_tcp pointer
 */
#define SOCK_TCP_ERR(sock_ptr) SOCK_ERR(SOCK_TCP_BASE(sock_ptr))

/**
 * Allocate a new blank sock_tcp with a correctly initialized base
 */
err_t sock_tcp_alloc (struct sock_tcp **sock_ptr);

/**
 * Initialize a blank sock_tcp with a given already-existing fd
 */
err_t sock_tcp_init_fd (struct sock_tcp *sock, int fd);

/**
 * Initialize sock_tcp.ev_* to use the socket's fd with the given callback. The ev's are not activated yet.
 */
err_t sock_tcp_init_ev (struct sock_tcp *sock, void (*ev_cb) (evutil_socket_t, short, void *), void *arg);

/**
 * Initialize a blank sock_tcp by connecting
 */
err_t sock_tcp_init_connect (struct sock_tcp *sock, const char *hostname, const char *service);

/**
 * Set the socket's nonblock mode
 */
err_t sock_tcp_set_nonblock (struct sock_tcp *sock, int nonblock);

/**
 * event_add the specified ev_* events.
 */
err_t sock_tcp_add_event (struct sock_tcp *sock, short mask);

/**
 * Close a connected sock_tcp
 */
err_t sock_tcp_close (struct sock_tcp *sock);

/**
 * Free a non-connected sock_tcp
 */
void sock_tcp_free (struct sock_tcp *sock);

#endif /* SOCK_TCP_H */