| /* |
| * |
| * 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_DATA_H |
| #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H |
| |
| /* Parser for GRPC streams embedded in DATA frames */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <grpc/slice.h> |
| #include <grpc/slice_buffer.h> |
| #include "src/core/ext/transport/chttp2/transport/frame.h" |
| #include "src/core/lib/transport/byte_stream.h" |
| #include "src/core/lib/transport/transport.h" |
| |
| typedef enum { |
| GRPC_CHTTP2_DATA_FH_0, |
| GRPC_CHTTP2_DATA_FH_1, |
| GRPC_CHTTP2_DATA_FH_2, |
| GRPC_CHTTP2_DATA_FH_3, |
| GRPC_CHTTP2_DATA_FH_4, |
| GRPC_CHTTP2_DATA_FRAME, |
| GRPC_CHTTP2_DATA_ERROR |
| } grpc_chttp2_stream_state; |
| |
| namespace grpc_core { |
| class Chttp2IncomingByteStream; |
| } // namespace grpc_core |
| |
| struct grpc_chttp2_data_parser { |
| grpc_chttp2_data_parser() = default; |
| ~grpc_chttp2_data_parser(); |
| |
| grpc_chttp2_stream_state state = GRPC_CHTTP2_DATA_FH_0; |
| uint8_t frame_type = 0; |
| uint32_t frame_size = 0; |
| grpc_error* error = GRPC_ERROR_NONE; |
| |
| bool is_frame_compressed = false; |
| grpc_core::Chttp2IncomingByteStream* parsing_frame = nullptr; |
| }; |
| |
| /* start processing a new data frame */ |
| grpc_error* grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser* parser, |
| uint8_t flags, |
| uint32_t stream_id, |
| grpc_chttp2_stream* s); |
| |
| /* handle a slice of a data frame - is_last indicates the last slice of a |
| frame */ |
| grpc_error* grpc_chttp2_data_parser_parse(void* parser, |
| grpc_chttp2_transport* t, |
| grpc_chttp2_stream* s, |
| grpc_slice slice, int is_last); |
| |
| void grpc_chttp2_encode_data(uint32_t id, grpc_slice_buffer* inbuf, |
| uint32_t write_bytes, int is_eof, |
| grpc_transport_one_way_stats* stats, |
| grpc_slice_buffer* outbuf); |
| |
| grpc_error* grpc_deframe_unprocessed_incoming_frames( |
| grpc_chttp2_data_parser* p, grpc_chttp2_stream* s, |
| grpc_slice_buffer* slices, grpc_slice* slice_out, |
| grpc_core::OrphanablePtr<grpc_core::ByteStream>* stream_out); |
| |
| #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */ |