mirror of
https://github.com/nghttp2/nghttp2.git
synced 2025-12-07 10:38:53 +08:00
93afbc7d2f
We rewrite static header table handling in nghttp2_hd.c. We expand nghttp2_token to include all static header table entries, and fully use them in header compression and decompression. The lookup function is now located in nghttp2_hd.c. We add new nghttp2_hd_inflate_hd2() function to export token value for header name, then we pass it to nghttp2_http_on_header function, so that we don't have to look up token there. We carefully set enum value of token to static table index, so looking up static table is now O(1), assuming we have token.
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*
|
|
* nghttp2 - HTTP/2 C 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 NGHTTP2_HELPER_H
|
|
#define NGHTTP2_HELPER_H
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif /* HAVE_CONFIG_H */
|
|
|
|
#include <string.h>
|
|
|
|
#include <nghttp2/nghttp2.h>
|
|
#include "nghttp2_mem.h"
|
|
|
|
#define nghttp2_min(A, B) ((A) < (B) ? (A) : (B))
|
|
#define nghttp2_max(A, B) ((A) > (B) ? (A) : (B))
|
|
|
|
#define lstreq(A, B, N) ((sizeof((A)) - 1) == (N) && memcmp((A), (B), (N)) == 0)
|
|
|
|
/*
|
|
* Copies 2 byte unsigned integer |n| in host byte order to |buf| in
|
|
* network byte order.
|
|
*/
|
|
void nghttp2_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 nghttp2_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 nghttp2_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 nghttp2_get_uint32(const uint8_t *data);
|
|
|
|
/*
|
|
* Allocates |n| bytes of memory and copy the memory region pointed by
|
|
* |src| with the length |n| bytes into it. Returns the allocated memory.
|
|
*
|
|
* This function returns pointer to allocated memory, or one of the
|
|
* following negative error codes:
|
|
*
|
|
* NGHTTP2_ERR_NOMEM
|
|
* Out of memory.
|
|
*/
|
|
void *nghttp2_memdup(const void *src, size_t n, nghttp2_mem *mem);
|
|
|
|
void nghttp2_downcase(uint8_t *s, size_t len);
|
|
|
|
/*
|
|
* Adjusts |*local_window_size_ptr|, |*recv_window_size_ptr|,
|
|
* |*recv_reduction_ptr| with |*delta_ptr| which is the
|
|
* WINDOW_UPDATE's window_size_increment sent from local side. If
|
|
* |delta| is strictly larger than |*recv_window_size_ptr|,
|
|
* |*local_window_size_ptr| is increased by delta -
|
|
* *recv_window_size_ptr. If |delta| is negative,
|
|
* |*local_window_size_ptr| is decreased by delta.
|
|
*
|
|
* This function returns 0 if it succeeds, or one of the following
|
|
* negative error codes:
|
|
*
|
|
* NGHTTP2_ERR_FLOW_CONTROL
|
|
* local_window_size overflow or gets negative.
|
|
*/
|
|
int nghttp2_adjust_local_window_size(int32_t *local_window_size_ptr,
|
|
int32_t *recv_window_size_ptr,
|
|
int32_t *recv_reduction_ptr,
|
|
int32_t *delta_ptr);
|
|
|
|
/*
|
|
* Returns non-zero if the function decided that WINDOW_UPDATE should
|
|
* be sent.
|
|
*/
|
|
int nghttp2_should_send_window_update(int32_t local_window_size,
|
|
int32_t recv_window_size);
|
|
|
|
/*
|
|
* Copies the buffer |src| of length |len| to the destination pointed
|
|
* by the |dest|, assuming that the |dest| is at lest |len| bytes long
|
|
* . Returns dest + len.
|
|
*/
|
|
uint8_t *nghttp2_cpymem(uint8_t *dest, const void *src, size_t len);
|
|
|
|
#endif /* NGHTTP2_HELPER_H */
|