Mercurial > hg > nginx
annotate src/stream/ngx_stream.h @ 9260:ac5635650bc6
Request body: handling of body after unbuffered reading.
As long as unbuffered reading of the request body was used, and an attempt
to read the request body is made again, such as when redirecting the request
to an error page, the request body is now cleared to make sure it can be
used safely.
Further, the r->reading_body flag, if it is still set, is cleared (along with
disabling keepalive and enabling lingering close), so the code which uses
the request body, such as when proxying, is not confused and doesn't try
to use "Transfer-Encoding: chunked".
Note that this change makes the workaround for HTTP/2 issues with unbuffered
proxying and error pages, as introduced in 7561:9f1f9d6e056a, ineffective
(since r->reading_body now cleared along with r->reading_body_no_buffering).
Though the workaround is anyway not needed after 7924:d9e009b39596, hence
it is removed.
This makes it safer to use complex processing of error pages with unbuffered
proxying.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Sat, 27 Apr 2024 18:22:07 +0300 |
parents | 113e2438dbd4 |
children |
rev | line source |
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6115 | 1 |
2 /* | |
3 * Copyright (C) Roman Arutyunyan | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #ifndef _NGX_STREAM_H_INCLUDED_ | |
9 #define _NGX_STREAM_H_INCLUDED_ | |
10 | |
11 | |
12 #include <ngx_config.h> | |
13 #include <ngx_core.h> | |
14 | |
15 #if (NGX_STREAM_SSL) | |
16 #include <ngx_stream_ssl_module.h> | |
17 #endif | |
18 | |
19 | |
20 typedef struct ngx_stream_session_s ngx_stream_session_t; | |
21 | |
22 | |
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23 #include <ngx_stream_variables.h> |
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24 #include <ngx_stream_script.h> |
6115 | 25 #include <ngx_stream_upstream.h> |
26 #include <ngx_stream_upstream_round_robin.h> | |
27 | |
28 | |
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29 #define NGX_STREAM_OK 200 |
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30 #define NGX_STREAM_BAD_REQUEST 400 |
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31 #define NGX_STREAM_FORBIDDEN 403 |
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32 #define NGX_STREAM_INTERNAL_SERVER_ERROR 500 |
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33 #define NGX_STREAM_BAD_GATEWAY 502 |
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34 #define NGX_STREAM_SERVICE_UNAVAILABLE 503 |
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35 |
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36 |
6115 | 37 typedef struct { |
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38 void **main_conf; |
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39 void **srv_conf; |
6115 | 40 } ngx_stream_conf_ctx_t; |
41 | |
42 | |
43 typedef struct { | |
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44 struct sockaddr *sockaddr; |
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45 socklen_t socklen; |
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46 ngx_str_t addr_text; |
6115 | 47 |
48 /* server ctx */ | |
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49 ngx_stream_conf_ctx_t *ctx; |
6115 | 50 |
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51 unsigned bind:1; |
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52 unsigned wildcard:1; |
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53 unsigned ssl:1; |
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54 #if (NGX_HAVE_INET6) |
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55 unsigned ipv6only:1; |
6115 | 56 #endif |
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57 unsigned reuseport:1; |
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58 unsigned so_keepalive:2; |
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59 unsigned proxy_protocol:1; |
6115 | 60 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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61 int tcp_keepidle; |
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62 int tcp_keepintvl; |
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63 int tcp_keepcnt; |
6115 | 64 #endif |
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65 int backlog; |
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66 int rcvbuf; |
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67 int sndbuf; |
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68 #if (NGX_HAVE_TCP_FASTOPEN) |
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69 int fastopen; |
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70 #endif |
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71 int type; |
6115 | 72 } ngx_stream_listen_t; |
73 | |
74 | |
75 typedef struct { | |
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76 ngx_stream_conf_ctx_t *ctx; |
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77 ngx_str_t addr_text; |
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78 unsigned ssl:1; |
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79 unsigned proxy_protocol:1; |
6115 | 80 } ngx_stream_addr_conf_t; |
81 | |
82 typedef struct { | |
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83 in_addr_t addr; |
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84 ngx_stream_addr_conf_t conf; |
6115 | 85 } ngx_stream_in_addr_t; |
86 | |
87 | |
88 #if (NGX_HAVE_INET6) | |
89 | |
90 typedef struct { | |
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91 struct in6_addr addr6; |
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92 ngx_stream_addr_conf_t conf; |
6115 | 93 } ngx_stream_in6_addr_t; |
94 | |
95 #endif | |
96 | |
97 | |
98 typedef struct { | |
99 /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ | |
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100 void *addrs; |
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101 ngx_uint_t naddrs; |
6115 | 102 } ngx_stream_port_t; |
103 | |
104 | |
105 typedef struct { | |
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106 int family; |
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107 int type; |
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108 in_port_t port; |
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109 ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ |
6115 | 110 } ngx_stream_conf_port_t; |
111 | |
112 | |
113 typedef struct { | |
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114 ngx_stream_listen_t opt; |
6115 | 115 } ngx_stream_conf_addr_t; |
116 | |
117 | |
6693 | 118 typedef enum { |
119 NGX_STREAM_POST_ACCEPT_PHASE = 0, | |
120 NGX_STREAM_PREACCESS_PHASE, | |
121 NGX_STREAM_ACCESS_PHASE, | |
122 NGX_STREAM_SSL_PHASE, | |
6694 | 123 NGX_STREAM_PREREAD_PHASE, |
6693 | 124 NGX_STREAM_CONTENT_PHASE, |
125 NGX_STREAM_LOG_PHASE | |
126 } ngx_stream_phases; | |
127 | |
128 | |
129 typedef struct ngx_stream_phase_handler_s ngx_stream_phase_handler_t; | |
130 | |
131 typedef ngx_int_t (*ngx_stream_phase_handler_pt)(ngx_stream_session_t *s, | |
132 ngx_stream_phase_handler_t *ph); | |
133 typedef ngx_int_t (*ngx_stream_handler_pt)(ngx_stream_session_t *s); | |
134 typedef void (*ngx_stream_content_handler_pt)(ngx_stream_session_t *s); | |
135 | |
136 | |
137 struct ngx_stream_phase_handler_s { | |
138 ngx_stream_phase_handler_pt checker; | |
139 ngx_stream_handler_pt handler; | |
140 ngx_uint_t next; | |
141 }; | |
142 | |
143 | |
144 typedef struct { | |
145 ngx_stream_phase_handler_t *handlers; | |
146 } ngx_stream_phase_engine_t; | |
147 | |
148 | |
149 typedef struct { | |
150 ngx_array_t handlers; | |
151 } ngx_stream_phase_t; | |
6175 | 152 |
153 | |
6115 | 154 typedef struct { |
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155 ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ |
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156 ngx_array_t listen; /* ngx_stream_listen_t */ |
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157 |
6693 | 158 ngx_stream_phase_engine_t phase_engine; |
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159 |
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160 ngx_hash_t variables_hash; |
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161 |
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162 ngx_array_t variables; /* ngx_stream_variable_t */ |
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163 ngx_array_t prefix_variables; /* ngx_stream_variable_t */ |
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164 ngx_uint_t ncaptures; |
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165 |
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166 ngx_uint_t variables_hash_max_size; |
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167 ngx_uint_t variables_hash_bucket_size; |
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168 |
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169 ngx_hash_keys_arrays_t *variables_keys; |
6693 | 170 |
171 ngx_stream_phase_t phases[NGX_STREAM_LOG_PHASE + 1]; | |
6115 | 172 } ngx_stream_core_main_conf_t; |
173 | |
174 | |
175 typedef struct { | |
6693 | 176 ngx_stream_content_handler_pt handler; |
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177 |
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178 ngx_stream_conf_ctx_t *ctx; |
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179 |
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180 u_char *file_name; |
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181 ngx_uint_t line; |
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182 |
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183 ngx_flag_t tcp_nodelay; |
6694 | 184 size_t preread_buffer_size; |
185 ngx_msec_t preread_timeout; | |
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186 |
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187 ngx_log_t *error_log; |
6618 | 188 |
189 ngx_msec_t resolver_timeout; | |
190 ngx_resolver_t *resolver; | |
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191 |
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192 ngx_msec_t proxy_protocol_timeout; |
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193 |
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194 ngx_uint_t listen; /* unsigned listen:1; */ |
6115 | 195 } ngx_stream_core_srv_conf_t; |
196 | |
197 | |
198 struct ngx_stream_session_s { | |
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199 uint32_t signature; /* "STRM" */ |
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200 |
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201 ngx_connection_t *connection; |
6115 | 202 |
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203 off_t received; |
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204 time_t start_sec; |
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205 ngx_msec_t start_msec; |
6115 | 206 |
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207 ngx_log_handler_pt log_handler; |
6115 | 208 |
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209 void **ctx; |
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210 void **main_conf; |
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211 void **srv_conf; |
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212 |
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213 ngx_stream_upstream_t *upstream; |
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214 ngx_array_t *upstream_states; |
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215 /* of ngx_stream_upstream_state_t */ |
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216 ngx_stream_variable_value_t *variables; |
6115 | 217 |
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218 #if (NGX_PCRE) |
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219 ngx_uint_t ncaptures; |
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220 int *captures; |
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221 u_char *captures_data; |
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222 #endif |
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223 |
6693 | 224 ngx_int_t phase_handler; |
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225 ngx_uint_t status; |
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226 |
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227 unsigned ssl:1; |
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228 |
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229 unsigned stat_processing:1; |
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230 |
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231 unsigned health_check:1; |
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232 |
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233 unsigned limit_conn_status:2; |
6115 | 234 }; |
235 | |
236 | |
237 typedef struct { | |
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238 ngx_int_t (*preconfiguration)(ngx_conf_t *cf); |
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239 ngx_int_t (*postconfiguration)(ngx_conf_t *cf); |
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240 |
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241 void *(*create_main_conf)(ngx_conf_t *cf); |
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242 char *(*init_main_conf)(ngx_conf_t *cf, void *conf); |
6115 | 243 |
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244 void *(*create_srv_conf)(ngx_conf_t *cf); |
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245 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, |
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246 void *conf); |
6115 | 247 } ngx_stream_module_t; |
248 | |
249 | |
250 #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ | |
251 | |
252 #define NGX_STREAM_MAIN_CONF 0x02000000 | |
253 #define NGX_STREAM_SRV_CONF 0x04000000 | |
254 #define NGX_STREAM_UPS_CONF 0x08000000 | |
255 | |
256 | |
257 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) | |
258 #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) | |
259 | |
260 | |
261 #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] | |
262 #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; | |
263 #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; | |
264 | |
265 | |
266 #define ngx_stream_get_module_main_conf(s, module) \ | |
267 (s)->main_conf[module.ctx_index] | |
268 #define ngx_stream_get_module_srv_conf(s, module) \ | |
269 (s)->srv_conf[module.ctx_index] | |
270 | |
271 #define ngx_stream_conf_get_module_main_conf(cf, module) \ | |
272 ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] | |
273 #define ngx_stream_conf_get_module_srv_conf(cf, module) \ | |
274 ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] | |
275 | |
276 #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ | |
277 (cycle->conf_ctx[ngx_stream_module.index] ? \ | |
278 ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ | |
279 ->main_conf[module.ctx_index]: \ | |
280 NULL) | |
281 | |
282 | |
6692 | 283 #define NGX_STREAM_WRITE_BUFFERED 0x10 |
284 | |
285 | |
6693 | 286 void ngx_stream_core_run_phases(ngx_stream_session_t *s); |
287 ngx_int_t ngx_stream_core_generic_phase(ngx_stream_session_t *s, | |
288 ngx_stream_phase_handler_t *ph); | |
6694 | 289 ngx_int_t ngx_stream_core_preread_phase(ngx_stream_session_t *s, |
290 ngx_stream_phase_handler_t *ph); | |
6693 | 291 ngx_int_t ngx_stream_core_content_phase(ngx_stream_session_t *s, |
292 ngx_stream_phase_handler_t *ph); | |
293 | |
294 | |
6115 | 295 void ngx_stream_init_connection(ngx_connection_t *c); |
6693 | 296 void ngx_stream_session_handler(ngx_event_t *rev); |
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297 void ngx_stream_finalize_session(ngx_stream_session_t *s, ngx_uint_t rc); |
6115 | 298 |
299 | |
300 extern ngx_module_t ngx_stream_module; | |
301 extern ngx_uint_t ngx_stream_max_module; | |
302 extern ngx_module_t ngx_stream_core_module; | |
303 | |
304 | |
6692 | 305 typedef ngx_int_t (*ngx_stream_filter_pt)(ngx_stream_session_t *s, |
306 ngx_chain_t *chain, ngx_uint_t from_upstream); | |
307 | |
308 | |
309 extern ngx_stream_filter_pt ngx_stream_top_filter; | |
310 | |
311 | |
6115 | 312 #endif /* _NGX_STREAM_H_INCLUDED_ */ |