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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#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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