1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
*
* 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/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"
#ifdef __cplusplus
extern "C" {
#endif
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_stream_state state;
uint8_t frame_type;
uint32_t frame_size;
grpc_error *error;
bool is_frame_compressed;
grpc_chttp2_incoming_byte_stream *parsing_frame;
} grpc_chttp2_data_parser;
/* 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,
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(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);
grpc_error *grpc_deframe_unprocessed_incoming_frames(
grpc_exec_ctx *exec_ctx, grpc_chttp2_data_parser *p, grpc_chttp2_stream *s,
grpc_slice_buffer *slices, grpc_slice *slice_out,
grpc_byte_stream **stream_out);
#ifdef __cplusplus
}
#endif
#endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */
|
