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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*
* Copyright (c) 2016 DeNA Co., Ltd., Ichito Nagata
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <inttypes.h>
#include "h2o.h"
#include "h2o/http2.h"
#include "h2o/http2_internal.h"
static const char *debug_state_string_open = "OPEN";
static const char *debug_state_string_half_closed_remote = "HALF_CLOSED_REMOTE";
static const char *debug_state_string_reserved_local = "RESERVED_LOCAL";
static const char *get_debug_state_string(h2o_http2_stream_t *stream)
{
if (h2o_http2_stream_is_push(stream->stream_id)) {
switch (stream->state) {
case H2O_HTTP2_STREAM_STATE_RECV_HEADERS:
case H2O_HTTP2_STREAM_STATE_RECV_BODY:
case H2O_HTTP2_STREAM_STATE_REQ_PENDING:
return debug_state_string_reserved_local;
case H2O_HTTP2_STREAM_STATE_SEND_HEADERS:
case H2O_HTTP2_STREAM_STATE_SEND_BODY:
case H2O_HTTP2_STREAM_STATE_SEND_BODY_IS_FINAL:
return debug_state_string_half_closed_remote;
case H2O_HTTP2_STREAM_STATE_IDLE:
case H2O_HTTP2_STREAM_STATE_END_STREAM:
return NULL;
}
} else {
switch (stream->state) {
case H2O_HTTP2_STREAM_STATE_RECV_HEADERS:
case H2O_HTTP2_STREAM_STATE_RECV_BODY:
return debug_state_string_open;
case H2O_HTTP2_STREAM_STATE_REQ_PENDING:
case H2O_HTTP2_STREAM_STATE_SEND_HEADERS:
case H2O_HTTP2_STREAM_STATE_SEND_BODY:
case H2O_HTTP2_STREAM_STATE_SEND_BODY_IS_FINAL:
return debug_state_string_half_closed_remote;
case H2O_HTTP2_STREAM_STATE_IDLE:
case H2O_HTTP2_STREAM_STATE_END_STREAM:
return NULL;
}
}
return NULL;
}
__attribute__((format(printf, 3, 4))) static void append_chunk(h2o_mem_pool_t *pool, h2o_iovec_vector_t *chunks, const char *fmt,
...)
{
va_list args;
va_start(args, fmt);
int size = vsnprintf(NULL, 0, fmt, args);
va_end(args);
assert(size > 0);
h2o_iovec_t v;
v.base = h2o_mem_alloc_pool(pool, size + 1);
va_start(args, fmt);
v.len = vsnprintf(v.base, size + 1, fmt, args);
va_end(args);
h2o_vector_reserve(pool, chunks, chunks->size + 1);
chunks->entries[chunks->size++] = v;
}
static void append_header_table_chunks(h2o_mem_pool_t *pool, h2o_iovec_vector_t *chunks, h2o_hpack_header_table_t *header_table)
{
int i;
for (i = 0; i < header_table->num_entries; i++) {
h2o_hpack_header_table_entry_t *entry = h2o_hpack_header_table_get(header_table, i);
append_chunk(pool, chunks, "\n"
" [ \"%.*s\", \"%.*s\" ],",
(int)entry->name->len, entry->name->base, (int)entry->value->len, entry->value->base);
}
if (i > 0) {
// remove the last commna
--chunks->entries[chunks->size - 1].len;
}
}
h2o_http2_debug_state_t *h2o_http2_get_debug_state(h2o_req_t *req, int hpack_enabled)
{
h2o_http2_conn_t *conn = (h2o_http2_conn_t *)req->conn;
h2o_http2_debug_state_t *state = h2o_mem_alloc_pool(&req->pool, sizeof(*state));
*state = (h2o_http2_debug_state_t){{NULL}};
state->conn_flow_in = conn->_write.window._avail;
state->conn_flow_out = conn->_write.window._avail;
append_chunk(&req->pool, &state->json, "{\n"
" \"version\": \"draft-01\",\n"
" \"settings\": {\n"
" \"SETTINGS_HEADER_TABLE_SIZE\": %" PRIu32 ",\n"
" \"SETTINGS_ENABLE_PUSH\": %" PRIu32 ",\n"
" \"SETTINGS_MAX_CONCURRENT_STREAMS\": %" PRIu32 ",\n"
" \"SETTINGS_INITIAL_WINDOW_SIZE\": %" PRIu32 ",\n"
" \"SETTINGS_MAX_FRAME_SIZE\": %" PRIu32 "\n"
" },\n"
" \"peerSettings\": {\n"
" \"SETTINGS_HEADER_TABLE_SIZE\": %" PRIu32 ",\n"
" \"SETTINGS_ENABLE_PUSH\": %" PRIu32 ",\n"
" \"SETTINGS_MAX_CONCURRENT_STREAMS\": %" PRIu32 ",\n"
" \"SETTINGS_INITIAL_WINDOW_SIZE\": %" PRIu32 ",\n"
" \"SETTINGS_MAX_FRAME_SIZE\": %" PRIu32 "\n"
" },\n"
" \"connFlowIn\": %zd,\n"
" \"connFlowOut\": %zd,\n"
" \"streams\": {",
H2O_HTTP2_SETTINGS_HOST.header_table_size, H2O_HTTP2_SETTINGS_HOST.enable_push,
H2O_HTTP2_SETTINGS_HOST.max_concurrent_streams, H2O_HTTP2_SETTINGS_HOST.initial_window_size,
H2O_HTTP2_SETTINGS_HOST.max_frame_size, conn->peer_settings.header_table_size, conn->peer_settings.enable_push,
conn->peer_settings.max_concurrent_streams, conn->peer_settings.initial_window_size,
conn->peer_settings.max_frame_size, conn->_input_window._avail, conn->_write.window._avail);
/* encode streams */
{
h2o_http2_stream_t *stream;
kh_foreach_value(conn->streams, stream, {
const char *state_string = get_debug_state_string(stream);
if (state_string == NULL)
continue;
append_chunk(&req->pool, &state->json, "\n"
" \"%" PRIu32 "\": {\n"
" \"state\": \"%s\",\n"
" \"flowIn\": %zd,\n"
" \"flowOut\": %zd,\n"
" \"dataIn\": %zu,\n"
" \"dataOut\": %zu,\n"
" \"created\": %" PRIu64 "\n"
" },",
stream->stream_id, state_string, stream->input_window._avail, stream->output_window._avail,
(stream->_req_body == NULL ? 0 : stream->_req_body->size), stream->req.bytes_sent,
(uint64_t)stream->req.timestamps.request_begin_at.tv_sec);
});
if (conn->streams->size > 0) {
// remove the last commna
--state->json.entries[state->json.size - 1].len;
}
}
append_chunk(&req->pool, &state->json, "\n"
" }");
if (hpack_enabled) {
/* encode inbound header table */
append_chunk(&req->pool, &state->json, ",\n"
" \"hpack\": {\n"
" \"inboundTableSize\": %zd,\n"
" \"inboundDynamicHeaderTable\": [",
conn->_input_header_table.num_entries);
append_header_table_chunks(&req->pool, &state->json, &conn->_input_header_table);
/* encode outbound header table */
append_chunk(&req->pool, &state->json, "\n"
" ],\n"
" \"outboundTableSize\": %zd,\n"
" \"outboundDynamicHeaderTable\": [",
conn->_output_header_table.num_entries);
append_header_table_chunks(&req->pool, &state->json, &conn->_output_header_table);
append_chunk(&req->pool, &state->json, "\n"
" ]\n"
" }");
}
append_chunk(&req->pool, &state->json, "\n"
"}\n");
return state;
}
|
