third_party_nghttp2/lib/spdylay_helper.h
Tatsuhiro Tsujikawa 82e20192d8 Added functions to process received SETTINGS frame.
Now remote and local settings are stored separately.
The initial window size is included in SETTINGS frame, all active stream's
window sizes are now updated.
Removed the initial_window_size member from spdylay_stream because
it is the same as remote_settings's initial window size.
2012-03-10 00:10:11 +09:00

81 lines
2.8 KiB
C

/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SPDYLAY_HELPER_H
#define SPDYLAY_HELPER_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <spdylay/spdylay.h>
#define spdylay_min(A, B) ((A) < (B) ? (A) : (B))
#define spdylay_max(A, B) ((A) > (B) ? (A) : (B))
/*
* Copies 2 byte unsigned integer |n| in host byte order to |buf| in
* network byte order.
*/
void spdylay_put_uint16be(uint8_t *buf, uint16_t n);
/*
* Copies 4 byte unsigned integer |n| in host byte order to |buf| in
* network byte order.
*/
void spdylay_put_uint32be(uint8_t *buf, uint32_t n);
/*
* Retrieves 2 byte unsigned integer stored in |data| in network byte
* order and returns it in host byte order.
*/
uint16_t spdylay_get_uint16(const uint8_t *data);
/*
* Retrieves 4 byte unsigned integer stored in |data| in network byte
* order and returns it in host byte order.
*/
uint32_t spdylay_get_uint32(const uint8_t *data);
/*
* Ensures that buffer |*buf_ptr| with |*buflen_ptr| length has at
* least |min_length| bytes. If |min_length| > |*buflen_ptr|,
* allocates new buffer having at least |min_length| bytes and assigns
* its pointer to |*buf_ptr| and allocated number of bytes to
* |*buflen_ptr|. The memory pointed by |*buf_ptr| previously is
* freed. No memory copy is done between old and new buffer.
* |*buf_ptr| and |*buflen_ptr| are only updated iff this function
* succeeds.
*
* This function returns 0 if it succeeds, or one of the following
* negative error codes:
*
* SPDYLAY_ERR_NOMEM
* Out of memory.
*/
int spdylay_reserve_buffer(uint8_t **buf_ptr, size_t *buflen_ptr,
size_t min_length);
#endif /* SPDYLAY_HELPER_H */