// // // 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_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H #define GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H #include <grpc/support/port_platform.h> #include <stddef.h> #include <stdint.h> #include <grpc/slice.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/error.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; struct grpc_chttp2_settings_parser { 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]; }; // Create a settings frame by diffing old & new, and updating old to be new grpc_slice grpc_chttp2_settings_create(uint32_t* old_settings, const uint32_t* new_settings, uint32_t force_mask, size_t count); // Create an ack settings frame grpc_slice grpc_chttp2_settings_ack_create(void); grpc_error_handle grpc_chttp2_settings_parser_begin_frame( grpc_chttp2_settings_parser* parser, uint32_t length, uint8_t flags, uint32_t* settings); grpc_error_handle grpc_chttp2_settings_parser_parse(void* parser, grpc_chttp2_transport* t, grpc_chttp2_stream* s, const grpc_slice& slice, int is_last); #endif // GRPC_SRC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H