128 lines
4.1 KiB
C
128 lines
4.1 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_OUTBOUND_ITEM_H
|
|
#define NGHTTP2_OUTBOUND_ITEM_H
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif /* HAVE_CONFIG_H */
|
|
|
|
#include <nghttp2/nghttp2.h>
|
|
#include "nghttp2_frame.h"
|
|
#include "nghttp2_mem.h"
|
|
|
|
/* A bit higher weight for non-DATA frames */
|
|
#define NGHTTP2_OB_EX_WEIGHT 300
|
|
/* Higher weight for SETTINGS */
|
|
#define NGHTTP2_OB_SETTINGS_WEIGHT 301
|
|
/* Highest weight for PING */
|
|
#define NGHTTP2_OB_PING_WEIGHT 302
|
|
|
|
/* struct used for HEADERS and PUSH_PROMISE frame */
|
|
typedef struct {
|
|
nghttp2_data_provider data_prd;
|
|
void *stream_user_data;
|
|
/* error code when request HEADERS is canceled by RST_STREAM while
|
|
it is in queue. */
|
|
uint32_t error_code;
|
|
/* nonzero if request HEADERS is canceled. The error code is stored
|
|
in |error_code|. */
|
|
uint8_t canceled;
|
|
/* nonzero if this item should be attached to stream object to make
|
|
it under priority control */
|
|
uint8_t attach_stream;
|
|
} nghttp2_headers_aux_data;
|
|
|
|
/* struct used for DATA frame */
|
|
typedef struct {
|
|
/**
|
|
* The data to be sent for this DATA frame.
|
|
*/
|
|
nghttp2_data_provider data_prd;
|
|
/**
|
|
* The flags of DATA frame. We use separate flags here and
|
|
* nghttp2_data frame. The latter contains flags actually sent to
|
|
* peer. This |flags| may contain NGHTTP2_FLAG_END_STREAM and only
|
|
* when |eof| becomes nonzero, flags in nghttp2_data has
|
|
* NGHTTP2_FLAG_END_STREAM set.
|
|
*/
|
|
uint8_t flags;
|
|
/**
|
|
* The flag to indicate whether EOF was reached or not. Initially
|
|
* |eof| is 0. It becomes 1 after all data were read.
|
|
*/
|
|
uint8_t eof;
|
|
/**
|
|
* The flag to indicate that NGHTTP2_DATA_FLAG_NO_COPY is used.
|
|
*/
|
|
uint8_t no_copy;
|
|
} nghttp2_data_aux_data;
|
|
|
|
typedef enum {
|
|
NGHTTP2_GOAWAY_AUX_NONE = 0x0,
|
|
/* indicates that session should be terminated after the
|
|
transmission of this frame. */
|
|
NGHTTP2_GOAWAY_AUX_TERM_ON_SEND = 0x1,
|
|
/* indicates that this GOAWAY is just a notification for graceful
|
|
shutdown. No nghttp2_session.goaway_flags should be updated on
|
|
the reaction to this frame. */
|
|
NGHTTP2_GOAWAY_AUX_SHUTDOWN_NOTICE = 0x2,
|
|
} nghttp2_goaway_aux_flag;
|
|
|
|
/* struct used for GOAWAY frame */
|
|
typedef struct {
|
|
/* bitwise-OR of one or more of nghttp2_goaway_aux_flag. */
|
|
uint8_t flags;
|
|
} nghttp2_goaway_aux_data;
|
|
|
|
/* Additional data which cannot be stored in nghttp2_frame struct */
|
|
typedef union {
|
|
nghttp2_data_aux_data data;
|
|
nghttp2_headers_aux_data headers;
|
|
nghttp2_goaway_aux_data goaway;
|
|
} nghttp2_aux_data;
|
|
|
|
typedef struct {
|
|
nghttp2_frame frame;
|
|
nghttp2_aux_data aux_data;
|
|
int64_t seq;
|
|
/* Reset count of weight. See comment for last_cycle in
|
|
nghttp2_session.h */
|
|
uint64_t cycle;
|
|
/* The priority used in priority comparion. Larger is served
|
|
ealier. */
|
|
int32_t weight;
|
|
/* nonzero if this object is queued. */
|
|
uint8_t queued;
|
|
} nghttp2_outbound_item;
|
|
|
|
/*
|
|
* Deallocates resource for |item|. If |item| is NULL, this function
|
|
* does nothing.
|
|
*/
|
|
void nghttp2_outbound_item_free(nghttp2_outbound_item *item, nghttp2_mem *mem);
|
|
|
|
#endif /* NGHTTP2_OUTBOUND_ITEM_H */
|