| /* |
| * |
| * 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" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| 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); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */ |