nginx-1.13.2/src/http/ngx_http_request.h

nginx-1.13.2/src/http/ngx_http_request.h
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The Wayback Machine - https://web.archive.org/web/20170919111558/http://lxr.nginx.org/source/src/http/ngx_http_request.h
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Version:
nginx-1.13.2
]​[
nginx-1.12.0
]​
0001
0002
/*
0003
* Copyright (C) Igor Sysoev
0004
* Copyright (C) Nginx, Inc.
0005
*/
0006
0007
0008
#ifndef
_NGX_HTTP_REQUEST_H_INCLUDED_
0009
#define
_NGX_HTTP_REQUEST_H_INCLUDED_
0010
0011
0012
#define
NGX_HTTP_MAX_URI_CHANGES
10
0013
#define
NGX_HTTP_MAX_SUBREQUESTS
50
0014
0015
/* must be 2^n */
0016
#define
NGX_HTTP_LC_HEADER_LEN
32
0017
0018
0019
#define
NGX_HTTP_DISCARD_BUFFER_SIZE
4096
0020
#define
NGX_HTTP_LINGERING_BUFFER_SIZE
4096
0021
0022
0023
#define
NGX_HTTP_VERSION_9
0024
#define
NGX_HTTP_VERSION_10
1000
0025
#define
NGX_HTTP_VERSION_11
1001
0026
#define
NGX_HTTP_VERSION_20
2000
0027
0028
#define
NGX_HTTP_UNKNOWN
0x0001
0029
#define
NGX_HTTP_GET
0x0002
0030
#define
NGX_HTTP_HEAD
0x0004
0031
#define
NGX_HTTP_POST
0x0008
0032
#define
NGX_HTTP_PUT
0x0010
0033
#define
NGX_HTTP_DELETE
0x0020
0034
#define
NGX_HTTP_MKCOL
0x0040
0035
#define
NGX_HTTP_COPY
0x0080
0036
#define
NGX_HTTP_MOVE
0x0100
0037
#define
NGX_HTTP_OPTIONS
0x0200
0038
#define
NGX_HTTP_PROPFIND
0x0400
0039
#define
NGX_HTTP_PROPPATCH
0x0800
0040
#define
NGX_HTTP_LOCK
0x1000
0041
#define
NGX_HTTP_UNLOCK
0x2000
0042
#define
NGX_HTTP_PATCH
0x4000
0043
#define
NGX_HTTP_TRACE
0x8000
0044
0045
#define
NGX_HTTP_CONNECTION_CLOSE
0046
#define
NGX_HTTP_CONNECTION_KEEP_ALIVE
0047
0048
0049
#define
NGX_NONE
0050
0051
0052
#define
NGX_HTTP_PARSE_HEADER_DONE
0053
0054
#define
NGX_HTTP_CLIENT_ERROR
10
0055
#define
NGX_HTTP_PARSE_INVALID_METHOD
10
0056
#define
NGX_HTTP_PARSE_INVALID_REQUEST
11
0057
#define
NGX_HTTP_PARSE_INVALID_VERSION
12
0058
#define
NGX_HTTP_PARSE_INVALID_09_METHOD
13
0059
0060
#define
NGX_HTTP_PARSE_INVALID_HEADER
14
0061
0062
0063
/* unused 1 */
0064
#define
NGX_HTTP_SUBREQUEST_IN_MEMORY
0065
#define
NGX_HTTP_SUBREQUEST_WAITED
0066
#define
NGX_HTTP_SUBREQUEST_CLONE
0067
#define
NGX_HTTP_SUBREQUEST_BACKGROUND
16
0068
0069
#define
NGX_HTTP_LOG_UNSAFE
0070
0071
0072
#define
NGX_HTTP_CONTINUE
100
0073
#define
NGX_HTTP_SWITCHING_PROTOCOLS
101
0074
#define
NGX_HTTP_PROCESSING
102
0075
0076
#define
NGX_HTTP_OK
200
0077
#define
NGX_HTTP_CREATED
201
0078
#define
NGX_HTTP_ACCEPTED
202
0079
#define
NGX_HTTP_NO_CONTENT
204
0080
#define
NGX_HTTP_PARTIAL_CONTENT
206
0081
0082
#define
NGX_HTTP_SPECIAL_RESPONSE
300
0083
#define
NGX_HTTP_MOVED_PERMANENTLY
301
0084
#define
NGX_HTTP_MOVED_TEMPORARILY
302
0085
#define
NGX_HTTP_SEE_OTHER
303
0086
#define
NGX_HTTP_NOT_MODIFIED
304
0087
#define
NGX_HTTP_TEMPORARY_REDIRECT
307
0088
#define
NGX_HTTP_PERMANENT_REDIRECT
308
0089
0090
#define
NGX_HTTP_BAD_REQUEST
400
0091
#define
NGX_HTTP_UNAUTHORIZED
401
0092
#define
NGX_HTTP_FORBIDDEN
403
0093
#define
NGX_HTTP_NOT_FOUND
404
0094
#define
NGX_HTTP_NOT_ALLOWED
405
0095
#define
NGX_HTTP_REQUEST_TIME_OUT
408
0096
#define
NGX_HTTP_CONFLICT
409
0097
#define
NGX_HTTP_LENGTH_REQUIRED
411
0098
#define
NGX_HTTP_PRECONDITION_FAILED
412
0099
#define
NGX_HTTP_REQUEST_ENTITY_TOO_LARGE
413
0100
#define
NGX_HTTP_REQUEST_URI_TOO_LARGE
414
0101
#define
NGX_HTTP_UNSUPPORTED_MEDIA_TYPE
415
0102
#define
NGX_HTTP_RANGE_NOT_SATISFIABLE
416
0103
#define
NGX_HTTP_MISDIRECTED_REQUEST
421
0104
#define
NGX_HTTP_TOO_MANY_REQUESTS
429
0105
0106
0107
/* Our own HTTP codes */
0108
0109
/* The special code to close connection without any response */
0110
#define
NGX_HTTP_CLOSE
444
0111
0112
#define
NGX_HTTP_NGINX_CODES
494
0113
0114
#define
NGX_HTTP_REQUEST_HEADER_TOO_LARGE
494
0115
0116
#define
NGX_HTTPS_CERT_ERROR
495
0117
#define
NGX_HTTPS_NO_CERT
496
0118
0119
/*
0120
* We use the special code for the plain HTTP requests that are sent to
0121
* HTTPS port to distinguish it from 4XX in an error page redirection
0122
*/
0123
#define
NGX_HTTP_TO_HTTPS
497
0124
0125
/* 498 is the canceled code for the requests with invalid host name */
0126
0127
/*
0128
* HTTP does not define the code for the case when a client closed
0129
* the connection while we are processing its request so we introduce
0130
* own code to log such situation when a client has closed the connection
0131
* before we even try to send the HTTP header to it
0132
*/
0133
#define
NGX_HTTP_CLIENT_CLOSED_REQUEST
499
0134
0135
0136
#define
NGX_HTTP_INTERNAL_SERVER_ERROR
500
0137
#define
NGX_HTTP_NOT_IMPLEMENTED
501
0138
#define
NGX_HTTP_BAD_GATEWAY
502
0139
#define
NGX_HTTP_SERVICE_UNAVAILABLE
503
0140
#define
NGX_HTTP_GATEWAY_TIME_OUT
504
0141
#define
NGX_HTTP_VERSION_NOT_SUPPORTED
505
0142
#define
NGX_HTTP_INSUFFICIENT_STORAGE
507
0143
0144
0145
#define
NGX_HTTP_LOWLEVEL_BUFFERED
0xf0
0146
#define
NGX_HTTP_WRITE_BUFFERED
0x10
0147
#define
NGX_HTTP_GZIP_BUFFERED
0x20
0148
#define
NGX_HTTP_SSI_BUFFERED
0x01
0149
#define
NGX_HTTP_SUB_BUFFERED
0x02
0150
#define
NGX_HTTP_COPY_BUFFERED
0x04
0151
0152
0153
typedef
enum
0154
NGX_HTTP_INITING_REQUEST_STATE
= 0,
0155
NGX_HTTP_READING_REQUEST_STATE
0156
NGX_HTTP_PROCESS_REQUEST_STATE
0157
0158
NGX_HTTP_CONNECT_UPSTREAM_STATE
0159
NGX_HTTP_WRITING_UPSTREAM_STATE
0160
NGX_HTTP_READING_UPSTREAM_STATE
0161
0162
NGX_HTTP_WRITING_REQUEST_STATE
0163
NGX_HTTP_LINGERING_CLOSE_STATE
0164
NGX_HTTP_KEEPALIVE_STATE
0165
ngx_http_state_e
0166
0167
0168
typedef
struct
0169
ngx_str_t
name
0170
ngx_uint_t
offset
0171
ngx_http_header_handler_pt
handler
0172
ngx_http_header_t
0173
0174
0175
typedef
struct
0176
ngx_str_t
name
0177
ngx_uint_t
offset
0178
ngx_http_header_out_t
0179
0180
0181
typedef
struct
0182
ngx_list_t
headers
0183
0184
ngx_table_elt_t
host
0185
ngx_table_elt_t
connection
0186
ngx_table_elt_t
if_modified_since
0187
ngx_table_elt_t
if_unmodified_since
0188
ngx_table_elt_t
if_match
0189
ngx_table_elt_t
if_none_match
0190
ngx_table_elt_t
user_agent
0191
ngx_table_elt_t
referer
0192
ngx_table_elt_t
content_length
0193
ngx_table_elt_t
content_range
0194
ngx_table_elt_t
content_type
0195
0196
ngx_table_elt_t
range
0197
ngx_table_elt_t
if_range
0198
0199
ngx_table_elt_t
transfer_encoding
0200
ngx_table_elt_t
expect
0201
ngx_table_elt_t
upgrade
0202
0203
#if
(NGX_HTTP_GZIP)
0204
ngx_table_elt_t
accept_encoding
0205
ngx_table_elt_t
via
0206
#endif
0207
0208
ngx_table_elt_t
authorization
0209
0210
ngx_table_elt_t
keep_alive
0211
0212
#if
(NGX_HTTP_X_FORWARDED_FOR)
0213
ngx_array_t
x_forwarded_for
0214
#endif
0215
0216
#if
(NGX_HTTP_REALIP)
0217
ngx_table_elt_t
x_real_ip
0218
#endif
0219
0220
#if
(NGX_HTTP_HEADERS)
0221
ngx_table_elt_t
accept
0222
ngx_table_elt_t
accept_language
0223
#endif
0224
0225
#if
(NGX_HTTP_DAV)
0226
ngx_table_elt_t
depth
0227
ngx_table_elt_t
destination
0228
ngx_table_elt_t
overwrite
0229
ngx_table_elt_t
date
0230
#endif
0231
0232
ngx_str_t
user
0233
ngx_str_t
passwd
0234
0235
ngx_array_t
0236
0237
ngx_str_t
server
0238
off_t
content_length_n
0239
time_t
keep_alive_n
0240
0241
unsigned
connection_type
:2;
0242
unsigned
chunked
:1;
0243
unsigned
msie
:1;
0244
unsigned
msie6
:1;
0245
unsigned
opera
:1;
0246
unsigned
gecko
:1;
0247
unsigned
chrome
:1;
0248
unsigned
safari
:1;
0249
unsigned
konqueror
:1;
0250
ngx_http_headers_in_t
0251
0252
0253
typedef
struct
0254
ngx_list_t
headers
0255
ngx_list_t
trailers
0256
0257
ngx_uint_t
status
0258
ngx_str_t
status_line
0259
0260
ngx_table_elt_t
server
0261
ngx_table_elt_t
date
0262
ngx_table_elt_t
content_length
0263
ngx_table_elt_t
content_encoding
0264
ngx_table_elt_t
location
0265
ngx_table_elt_t
refresh
0266
ngx_table_elt_t
last_modified
0267
ngx_table_elt_t
content_range
0268
ngx_table_elt_t
accept_ranges
0269
ngx_table_elt_t
www_authenticate
0270
ngx_table_elt_t
expires
0271
ngx_table_elt_t
etag
0272
0273
ngx_str_t
override_charset
0274
0275
size_t
content_type_len
0276
ngx_str_t
content_type
0277
ngx_str_t
charset
0278
u_char *
content_type_lowcase
0279
ngx_uint_t
content_type_hash
0280
0281
ngx_array_t
cache_control
0282
0283
off_t
content_length_n
0284
off_t
content_offset
0285
time_t
date_time
0286
time_t
last_modified_time
0287
ngx_http_headers_out_t
0288
0289
0290
typedef
void
(*
ngx_http_client_body_handler_pt
)(
ngx_http_request_t
);
0291
0292
typedef
struct
0293
ngx_temp_file_t
temp_file
0294
ngx_chain_t
bufs
0295
ngx_buf_t
buf
0296
off_t
rest
0297
off_t
received
0298
ngx_chain_t
free
0299
ngx_chain_t
busy
0300
ngx_http_chunked_t
chunked
0301
ngx_http_client_body_handler_pt
post_handler
0302
ngx_http_request_body_t
0303
0304
0305
typedef
struct
ngx_http_addr_conf_s
ngx_http_addr_conf_t
0306
0307
typedef
struct
0308
ngx_http_addr_conf_t
addr_conf
0309
ngx_http_conf_ctx_t
conf_ctx
0310
0311
#if
(NGX_HTTP_SSL || NGX_COMPAT)
0312
ngx_str_t
ssl_servername
0313
#if
(NGX_PCRE)
0314
ngx_http_regex_t
ssl_servername_regex
0315
#endif
0316
#endif
0317
0318
ngx_chain_t
busy
0319
ngx_int_t
nbusy
0320
0321
ngx_chain_t
free
0322
0323
unsigned
ssl
:1;
0324
unsigned
proxy_protocol
:1;
0325
ngx_http_connection_t
0326
0327
0328
typedef
void
(*
ngx_http_cleanup_pt
)(
void
data
);
0329
0330
typedef
struct
ngx_http_cleanup_s
ngx_http_cleanup_t
0331
0332
struct
ngx_http_cleanup_s
0333
ngx_http_cleanup_pt
handler
0334
void
data
0335
ngx_http_cleanup_t
next
0336
};
0337
0338
0339
typedef
ngx_int_t
(*
ngx_http_post_subrequest_pt
)(
ngx_http_request_t
0340
void
data
ngx_int_t
rc
);
0341
0342
typedef
struct
0343
ngx_http_post_subrequest_pt
handler
0344
void
data
0345
ngx_http_post_subrequest_t
0346
0347
0348
typedef
struct
ngx_http_postponed_request_s
ngx_http_postponed_request_t
0349
0350
struct
ngx_http_postponed_request_s
0351
ngx_http_request_t
request
0352
ngx_chain_t
out
0353
ngx_http_postponed_request_t
next
0354
};
0355
0356
0357
typedef
struct
ngx_http_posted_request_s
ngx_http_posted_request_t
0358
0359
struct
ngx_http_posted_request_s
0360
ngx_http_request_t
request
0361
ngx_http_posted_request_t
next
0362
};
0363
0364
0365
typedef
ngx_int_t
(*
ngx_http_handler_pt
)(
ngx_http_request_t
);
0366
typedef
void
(*
ngx_http_event_handler_pt
)(
ngx_http_request_t
);
0367
0368
0369
struct
ngx_http_request_s
0370
uint32_t
signature
/* "HTTP" */
0371
0372
ngx_connection_t
connection
0373
0374
void
**
ctx
0375
void
**
main_conf
0376
void
**
srv_conf
0377
void
**
loc_conf
0378
0379
ngx_http_event_handler_pt
read_event_handler
0380
ngx_http_event_handler_pt
write_event_handler
0381
0382
#if
(NGX_HTTP_CACHE)
0383
ngx_http_cache_t
cache
0384
#endif
0385
0386
ngx_http_upstream_t
upstream
0387
ngx_array_t
upstream_states
0388
/* of ngx_http_upstream_state_t */
0389
0390
ngx_pool_t
pool
0391
ngx_buf_t
header_in
0392
0393
ngx_http_headers_in_t
headers_in
0394
ngx_http_headers_out_t
headers_out
0395
0396
ngx_http_request_body_t
request_body
0397
0398
time_t
lingering_time
0399
time_t
start_sec
0400
ngx_msec_t
start_msec
0401
0402
ngx_uint_t
method
0403
ngx_uint_t
http_version
0404
0405
ngx_str_t
request_line
0406
ngx_str_t
uri
0407
ngx_str_t
args
0408
ngx_str_t
exten
0409
ngx_str_t
unparsed_uri
0410
0411
ngx_str_t
method_name
0412
ngx_str_t
http_protocol
0413
0414
ngx_chain_t
out
0415
ngx_http_request_t
main
0416
ngx_http_request_t
parent
0417
ngx_http_postponed_request_t
postponed
0418
ngx_http_post_subrequest_t
post_subrequest
0419
ngx_http_posted_request_t
posted_requests
0420
0421
ngx_int_t
phase_handler
0422
ngx_http_handler_pt
content_handler
0423
ngx_uint_t
access_code
0424
0425
ngx_http_variable_value_t
variables
0426
0427
#if
(NGX_PCRE)
0428
ngx_uint_t
ncaptures
0429
int
captures
0430
u_char *
captures_data
0431
#endif
0432
0433
size_t
limit_rate
0434
size_t
limit_rate_after
0435
0436
/* used to learn the Apache compatible response length without a header */
0437
size_t
header_size
0438
0439
off_t
request_length
0440
0441
ngx_uint_t
err_status
0442
0443
ngx_http_connection_t
http_connection
0444
ngx_http_v2_stream_t
stream
0445
0446
ngx_http_log_handler_pt
log_handler
0447
0448
ngx_http_cleanup_t
cleanup
0449
0450
unsigned
count
:16;
0451
unsigned
subrequests
:8;
0452
unsigned
blocked
:8;
0453
0454
unsigned
aio
:1;
0455
0456
unsigned
http_state
:4;
0457
0458
/* URI with "/." and on Win32 with "//" */
0459
unsigned
complex_uri
:1;
0460
0461
/* URI with "%" */
0462
unsigned
quoted_uri
:1;
0463
0464
/* URI with "+" */
0465
unsigned
plus_in_uri
:1;
0466
0467
/* URI with " " */
0468
unsigned
space_in_uri
:1;
0469
0470
unsigned
invalid_header
:1;
0471
0472
unsigned
add_uri_to_alias
:1;
0473
unsigned
valid_location
:1;
0474
unsigned
valid_unparsed_uri
:1;
0475
unsigned
uri_changed
:1;
0476
unsigned
uri_changes
:4;
0477
0478
unsigned
request_body_in_single_buf
:1;
0479
unsigned
request_body_in_file_only
:1;
0480
unsigned
request_body_in_persistent_file
:1;
0481
unsigned
request_body_in_clean_file
:1;
0482
unsigned
request_body_file_group_access
:1;
0483
unsigned
request_body_file_log_level
:3;
0484
unsigned
request_body_no_buffering
:1;
0485
0486
unsigned
subrequest_in_memory
:1;
0487
unsigned
waited
:1;
0488
0489
#if
(NGX_HTTP_CACHE)
0490
unsigned
cached
:1;
0491
#endif
0492
0493
#if
(NGX_HTTP_GZIP)
0494
unsigned
gzip_tested
:1;
0495
unsigned
gzip_ok
:1;
0496
unsigned
gzip_vary
:1;
0497
#endif
0498
0499
unsigned
proxy
:1;
0500
unsigned
bypass_cache
:1;
0501
unsigned
no_cache
:1;
0502
0503
/*
0504
* instead of using the request context data in
0505
* ngx_http_limit_conn_module and ngx_http_limit_req_module
0506
* we use the single bits in the request structure
0507
*/
0508
unsigned
limit_conn_set
:1;
0509
unsigned
limit_req_set
:1;
0510
0511
#if
0512
unsigned
cacheable
:1;
0513
#endif
0514
0515
unsigned
pipeline
:1;
0516
unsigned
chunked
:1;
0517
unsigned
header_only
:1;
0518
unsigned
expect_trailers
:1;
0519
unsigned
keepalive
:1;
0520
unsigned
lingering_close
:1;
0521
unsigned
discard_body
:1;
0522
unsigned
reading_body
:1;
0523
unsigned
internal
:1;
0524
unsigned
error_page
:1;
0525
unsigned
filter_finalize
:1;
0526
unsigned
post_action
:1;
0527
unsigned
request_complete
:1;
0528
unsigned
request_output
:1;
0529
unsigned
header_sent
:1;
0530
unsigned
expect_tested
:1;
0531
unsigned
root_tested
:1;
0532
unsigned
done
:1;
0533
unsigned
logged
:1;
0534
0535
unsigned
buffered
:4;
0536
0537
unsigned
main_filter_need_in_memory
:1;
0538
unsigned
filter_need_in_memory
:1;
0539
unsigned
filter_need_temporary
:1;
0540
unsigned
allow_ranges
:1;
0541
unsigned
subrequest_ranges
:1;
0542
unsigned
single_range
:1;
0543
unsigned
disable_not_modified
:1;
0544
unsigned
stat_reading
:1;
0545
unsigned
stat_writing
:1;
0546
unsigned
stat_processing
:1;
0547
0548
unsigned
background
:1;
0549
unsigned
health_check
:1;
0550
0551
/* used to parse HTTP headers */
0552
0553
ngx_uint_t
state
0554
0555
ngx_uint_t
header_hash
0556
ngx_uint_t
lowcase_index
0557
u_char
lowcase_header
NGX_HTTP_LC_HEADER_LEN
];
0558
0559
u_char *
header_name_start
0560
u_char *
header_name_end
0561
u_char *
header_start
0562
u_char *
header_end
0563
0564
/*
0565
* a memory that can be reused after parsing a request line
0566
* via ngx_http_ephemeral_t
0567
*/
0568
0569
u_char *
uri_start
0570
u_char *
uri_end
0571
u_char *
uri_ext
0572
u_char *
args_start
0573
u_char *
request_start
0574
u_char *
request_end
0575
u_char *
method_end
0576
u_char *
schema_start
0577
u_char *
schema_end
0578
u_char *
host_start
0579
u_char *
host_end
0580
u_char *
port_start
0581
u_char *
port_end
0582
0583
unsigned
http_minor
:16;
0584
unsigned
http_major
:16;
0585
};
0586
0587
0588
typedef
struct
0589
ngx_http_posted_request_t
terminal_posted_request
0590
ngx_http_ephemeral_t
0591
0592
0593
#define
ngx_http_ephemeral
) (
void
*) (&
->
uri_start
0594
0595
0596
extern
ngx_http_header_t
ngx_http_headers_in
[];
0597
extern
ngx_http_header_out_t
ngx_http_headers_out
[];
0598
0599
0600
#define
ngx_http_set_log_request
log
) \
0601
((
ngx_http_log_ctx_t
*)
log
->
data
)->
current_request
0602
0603
0604
#endif
/* _NGX_HTTP_REQUEST_H_INCLUDED_ */
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