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/*
*
* Copyright 2015, Google Inc.
* 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER OR CONTRIBUTORS 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 GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
#define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H
#include <grpc/slice.h>
#include <grpc/support/port_platform.h>
#include "src/core/ext/transport/chttp2/transport/frame.h"
#include "src/core/ext/transport/chttp2/transport/http2_settings.h"
#include "src/core/lib/iomgr/exec_ctx.h"
typedef enum {
GRPC_CHTTP2_SPS_ID0,
GRPC_CHTTP2_SPS_ID1,
GRPC_CHTTP2_SPS_VAL0,
GRPC_CHTTP2_SPS_VAL1,
GRPC_CHTTP2_SPS_VAL2,
GRPC_CHTTP2_SPS_VAL3
} grpc_chttp2_settings_parse_state;
typedef struct {
grpc_chttp2_settings_parse_state state;
uint32_t *target_settings;
uint8_t is_ack;
uint16_t id;
uint32_t value;
uint32_t incoming_settings[GRPC_CHTTP2_NUM_SETTINGS];
} grpc_chttp2_settings_parser;
/* Create a settings frame by diffing old & new, and updating old to be new */
grpc_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *newval,
uint32_t force_mask, size_t count);
/* Create an ack settings frame */
grpc_slice grpc_chttp2_settings_ack_create(void);
grpc_error *grpc_chttp2_settings_parser_begin_frame(
grpc_chttp2_settings_parser *parser, uint32_t length, uint8_t flags,
uint32_t *settings);
grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx,
void *parser,
grpc_chttp2_transport *t,
grpc_chttp2_stream *s,
grpc_slice slice, int is_last);
#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */
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