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/*
This file is part of libmicrospdy
Copyright Copyright (C) 2013 Andrey Uzunov
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file io_raw.h
* @brief IO for SPDY without TLS.
* @author Andrey Uzunov
*/
#ifndef IO_RAW_H
#define IO_RAW_H
#include "platform.h"
/**
* Must be called only once in the program.
*
*/
void
SPDYF_raw_global_init();
/**
* Should be called
* at the end of the program.
*
*/
void
SPDYF_raw_global_deinit();
/**
* Must be called when the daemon starts.
*
* @param daemon SPDY_Daemon
* @return SPDY_YES on success or SPDY_NO on error
*/
int
SPDYF_raw_init(struct SPDY_Daemon *daemon);
/**
* Should be called
* when the deamon is stopped.
*
* @param daemon SPDY_Daemon which is being stopped
*/
void
SPDYF_raw_deinit(struct SPDY_Daemon *daemon);
/**
* Must be called
* after the connection has been accepted.
*
* @param session SPDY_Session whose socket will be used
* @return SPDY_NO if some funcs fail. SPDY_YES otherwise
*/
int
SPDYF_raw_new_session(struct SPDY_Session *session);
/**
* Should be called
* closing session's socket.
*
* @param session SPDY_Session whose socket is used
*/
void
SPDYF_raw_close_session(struct SPDY_Session *session);
/**
* Reading from socket. Reads available data and put it to the
* buffer.
*
* @param session for which data is received
* @param buffer where data from the socket will be written to
* @param size of the buffer
* @return number of bytes (at most size) read from the connection
* 0 if the other party has closed the connection
* SPDY_IO_ERROR code on error
*/
int
SPDYF_raw_recv(struct SPDY_Session *session,
void * buffer,
size_t size);
/**
* Writing to socket. Writes the data given into the buffer to the
* socket.
*
* @param session whose context is used
* @param buffer from where data will be written to the socket
* @param size number of bytes to be taken from the buffer
* @return number of bytes (at most size) from the buffer that has been
* written to the connection
* 0 if the other party has closed the connection
* SPDY_IO_ERROR code on error
*/
int
SPDYF_raw_send(struct SPDY_Session *session,
const void * buffer,
size_t size);
/**
* Checks if there is data staying in the buffers of the underlying
* system that waits to be read. Always returns SPDY_NO, as we do not
* use a subsystem here.
*
* @param session which is checked
* @return SPDY_YES if data is pending or SPDY_NO otherwise
*/
int
SPDYF_raw_is_pending(struct SPDY_Session *session);
/**
* Sets TCP_CORK.
*
* @param session
* @return SPDY_NO if writing must not happen in the call;
* SPDY_YES otherwise
*/
int
SPDYF_raw_before_write(struct SPDY_Session *session);
/**
* Unsets TCP_CORK.
*
* @param session
* @param was_written has the same value as the write function for the
* session will return
* @return returned value will be used by the write function to return
*/
int
SPDYF_raw_after_write(struct SPDY_Session *session, int was_written);
#endif
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