| /* |
| * |
| * 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_DATA_H |
| #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H |
| |
| /* Parser for GRPC streams embedded in DATA frames */ |
| |
| #include <grpc/slice.h> |
| #include <grpc/slice_buffer.h> |
| #include "src/core/ext/transport/chttp2/transport/frame.h" |
| #include "src/core/lib/iomgr/exec_ctx.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; |
| |
| typedef struct grpc_chttp2_incoming_byte_stream |
| grpc_chttp2_incoming_byte_stream; |
| |
| typedef struct grpc_chttp2_incoming_frame_queue { |
| grpc_chttp2_incoming_byte_stream *head; |
| grpc_chttp2_incoming_byte_stream *tail; |
| } grpc_chttp2_incoming_frame_queue; |
| |
| typedef struct { |
| grpc_chttp2_stream_state state; |
| uint8_t is_last_frame; |
| uint8_t frame_type; |
| uint32_t frame_size; |
| grpc_error *error; |
| |
| int is_frame_compressed; |
| grpc_chttp2_incoming_byte_stream *parsing_frame; |
| } grpc_chttp2_data_parser; |
| |
| void grpc_chttp2_incoming_frame_queue_merge( |
| grpc_chttp2_incoming_frame_queue *head_dst, |
| grpc_chttp2_incoming_frame_queue *tail_src); |
| grpc_byte_stream *grpc_chttp2_incoming_frame_queue_pop( |
| grpc_chttp2_incoming_frame_queue *q); |
| |
| /* initialize per-stream state for data frame parsing */ |
| grpc_error *grpc_chttp2_data_parser_init(grpc_chttp2_data_parser *parser); |
| |
| void grpc_chttp2_data_parser_destroy(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_data_parser *parser); |
| |
| /* 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); |
| |
| /* handle a slice of a data frame - is_last indicates the last slice of a |
| frame */ |
| grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, 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); |
| |
| #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */ |