| /* |
| * |
| * 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_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H |
| #define GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H |
| |
| /* Parser for GRPC streams embedded in DATA frames */ |
| |
| #include <grpc/support/slice.h> |
| #include <grpc/support/slice_buffer.h> |
| #include "src/core/transport/stream_op.h" |
| #include "src/core/transport/chttp2/frame.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_stream_state; |
| |
| typedef struct { |
| grpc_chttp2_stream_state state; |
| gpr_uint8 is_last_frame; |
| gpr_uint8 frame_type; |
| gpr_uint32 frame_size; |
| |
| grpc_stream_op_buffer incoming_sopb; |
| } grpc_chttp2_data_parser; |
| |
| /* initialize per-stream state for data frame parsing */ |
| grpc_chttp2_parse_error grpc_chttp2_data_parser_init( |
| grpc_chttp2_data_parser *parser); |
| |
| void grpc_chttp2_data_parser_destroy(grpc_chttp2_data_parser *parser); |
| |
| /* start processing a new data frame */ |
| grpc_chttp2_parse_error grpc_chttp2_data_parser_begin_frame( |
| grpc_chttp2_data_parser *parser, gpr_uint8 flags); |
| |
| /* handle a slice of a data frame - is_last indicates the last slice of a |
| frame */ |
| grpc_chttp2_parse_error grpc_chttp2_data_parser_parse( |
| void *parser, grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); |
| |
| /* create a slice with an empty data frame and is_last set */ |
| gpr_slice grpc_chttp2_data_frame_create_empty_close(gpr_uint32 id); |
| |
| #endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H */ |