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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
/*
* Vio Lite.
* Purpose: include file for Vio that will work with C and C++
*/
#ifndef vio_violite_h_
#define vio_violite_h_
#include "my_net.h" /* needed because of struct in_addr */
#ifdef HAVE_VIO
#include <Vio.h> /* Full VIO interface */
#else
#ifdef HAVE_OPENSSL
#include <openssl/ssl.h>
#endif
enum enum_vio_io_event
{
VIO_IO_EVENT_READ,
VIO_IO_EVENT_WRITE,
VIO_IO_EVENT_CONNECT
};
/* Simple vio interface in C; The functions are implemented in violite.c */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifndef Vio_defined
#define Vio_defined
struct st_vio; /* Only C */
typedef struct st_vio Vio;
#endif
#ifndef _WIN32
#define HANDLE void *
#endif
/* vio read-ahead cachine */
#define VIO_CACHE_SIZE 16384
#define VIO_CACHE_MIN_SIZE 2048
enum enum_vio_type { VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET,
VIO_TYPE_NAMEDPIPE, VIO_TYPE_SSL};
Vio* vio_new(my_socket sd,
enum enum_vio_type type,
my_bool localhost);
#ifdef _WIN32
Vio* vio_new_win32pipe(HANDLE hPipe);
#endif
void vio_delete(Vio* vio);
void vio_reset(Vio* vio, enum enum_vio_type type,
my_socket sd, HANDLE hPipe,
my_bool localhost);
/*
* vio_read and vio_write should have the same semantics
* as read(2) and write(2).
*/
size_t vio_read(Vio* vio, gptr buf, size_t size);
my_bool vio_read_peek(Vio *vio, size_t *bytes);
size_t vio_write(Vio* vio, const gptr buf, size_t size);
/*
* Whenever the socket is set to blocking mode or not.
*/
int vio_blocking( Vio* vio,
my_bool onoff,
my_bool *prevmode);
my_bool vio_is_blocking( Vio* vio);
/*
* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible.
*/
int vio_fastsend( Vio* vio);
/*
* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible.
*/
int vio_keepalive( Vio* vio,
my_bool onoff);
/*
* Whenever we should retry the last read/write operation.
*/
my_bool vio_should_retry( Vio* vio);
/*
* When the workday is over...
*/
int vio_close( Vio* vio);
/*
* Short text description of the socket for those, who are curious..
*/
const char* vio_description( Vio* vio);
/* Return the type of the connection */
enum enum_vio_type vio_type(Vio* vio);
/* set timeout */
void vio_read_timeout(Vio *vio, uint seconds);
void vio_write_timeout(Vio *vio, uint seconds);
/* Return last error number */
int vio_errno(Vio *vio);
/* Get socket number */
my_socket vio_fd(Vio *vio);
/*
* Remote peer's address and name in text form.
*/
my_bool vio_peer_addr(Vio * vio, char *buf);
/* Remotes in_addr */
void vio_in_addr(Vio *vio, struct in_addr *in);
/* Return 1 if there is data to be read */
my_bool vio_poll_read(Vio *vio,uint timeout);
int vio_wait_or_timeout(Vio *vio, my_bool is_read, int timeout);
struct st_vio
{
my_socket sd; /* my_socket - real or imaginary */
HANDLE hPipe;
my_bool localhost; /* Are we from localhost? */
int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
struct sockaddr_in local; /* Local internet address */
struct sockaddr_in remote; /* Remote internet address */
struct mysql_async_context *async_context; /* For non-blocking API */
int write_timeout;
int read_timeout;
enum enum_vio_type type; /* Type of connection */
char desc[30]; /* String description */
#ifdef HAVE_OPENSSL
SSL *ssl;
#endif
uchar *cache; /* read-ahead cache to reduce reads (see CONC-79) */
uchar *cache_pos; /* position of read-ahead cached data */
size_t cache_size; /* <= VIO_CACHE_SIZE */
};
#ifdef __cplusplus
}
#endif
#endif /* HAVE_VIO */
#endif /* vio_violite_h_ */
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