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/* Copyright (c) 2010-2012, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PROXY_H_
#define PROXY_H_
#include "config.h"
#include "buffer.h"
/**
* @file proxy.h
* Direct asynchronous proxy implementation
*/
typedef struct rspamd_proxy_s {
struct event client_ev; /**< event for client's communication */
struct event backend_ev; /**< event for backend communication */
struct event_base *base; /**< base for event operations */
memory_pool_t *pool; /**< memory pool */
dispatcher_err_callback_t err_cb; /**< error callback */
struct event_base *ev_base; /**< event base */
gint cfd; /**< client's socket */
gint bfd; /**< backend's socket */
guint8 *buf; /**< exchange buffer */
gsize bufsize; /**< buffer size */
gint read_len; /**< read length */
gint buf_offset; /**< offset to write */
gpointer user_data; /**< user's data for callbacks */
struct timeval *tv; /**< timeout for communications */
gboolean closed; /**< whether descriptors are closed */
} rspamd_proxy_t;
/**
* Create new proxy between cfd and bfd
* @param cfd client's socket
* @param bfd backend's socket
* @param bufsize size of exchange buffer
* @param err_cb callback for erorrs or completing
* @param ud user data for callback
* @return new proxy object
*/
rspamd_proxy_t* rspamd_create_proxy (gint cfd, gint bfd, memory_pool_t *pool,
struct event_base *base, gsize bufsize, struct timeval *tv,
dispatcher_err_callback_t err_cb, gpointer ud);
void rspamd_proxy_close (rspamd_proxy_t *proxy);
#endif /* PROXY_H_ */
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