Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream.h @ 8456:c72d8839f427
Mail: fixed SMTP pipelining to send the response immediately.
Previously, if there were some pipelined SMTP data in the buffer when
a proxied connection with the backend was established, nginx called
ngx_mail_proxy_handler() to send these data, and not tried to send the
response to the last command. In most cases, this response was later sent
along with the response to the pipelined command, but if for some reason
client decides to wait for the response before finishing the next command
this might result in a connection hang.
Fix is to always call ngx_mail_proxy_handler() to send the response, and
additionally post an event to send the pipelined data if needed.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 19 May 2021 03:13:12 +0300 |
parents | 9606d93aa586 |
children | 893b3313f53c 2ab7b55ae4a0 |
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 int type; |
6115 | 69 } ngx_stream_listen_t; |
70 | |
71 | |
72 typedef struct { | |
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73 ngx_stream_conf_ctx_t *ctx; |
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74 ngx_str_t addr_text; |
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75 unsigned ssl:1; |
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76 unsigned proxy_protocol:1; |
6115 | 77 } ngx_stream_addr_conf_t; |
78 | |
79 typedef struct { | |
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80 in_addr_t addr; |
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81 ngx_stream_addr_conf_t conf; |
6115 | 82 } ngx_stream_in_addr_t; |
83 | |
84 | |
85 #if (NGX_HAVE_INET6) | |
86 | |
87 typedef struct { | |
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88 struct in6_addr addr6; |
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89 ngx_stream_addr_conf_t conf; |
6115 | 90 } ngx_stream_in6_addr_t; |
91 | |
92 #endif | |
93 | |
94 | |
95 typedef struct { | |
96 /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ | |
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97 void *addrs; |
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98 ngx_uint_t naddrs; |
6115 | 99 } ngx_stream_port_t; |
100 | |
101 | |
102 typedef struct { | |
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103 int family; |
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104 int type; |
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105 in_port_t port; |
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106 ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ |
6115 | 107 } ngx_stream_conf_port_t; |
108 | |
109 | |
110 typedef struct { | |
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111 ngx_stream_listen_t opt; |
6115 | 112 } ngx_stream_conf_addr_t; |
113 | |
114 | |
6693 | 115 typedef enum { |
116 NGX_STREAM_POST_ACCEPT_PHASE = 0, | |
117 NGX_STREAM_PREACCESS_PHASE, | |
118 NGX_STREAM_ACCESS_PHASE, | |
119 NGX_STREAM_SSL_PHASE, | |
6694 | 120 NGX_STREAM_PREREAD_PHASE, |
6693 | 121 NGX_STREAM_CONTENT_PHASE, |
122 NGX_STREAM_LOG_PHASE | |
123 } ngx_stream_phases; | |
124 | |
125 | |
126 typedef struct ngx_stream_phase_handler_s ngx_stream_phase_handler_t; | |
127 | |
128 typedef ngx_int_t (*ngx_stream_phase_handler_pt)(ngx_stream_session_t *s, | |
129 ngx_stream_phase_handler_t *ph); | |
130 typedef ngx_int_t (*ngx_stream_handler_pt)(ngx_stream_session_t *s); | |
131 typedef void (*ngx_stream_content_handler_pt)(ngx_stream_session_t *s); | |
132 | |
133 | |
134 struct ngx_stream_phase_handler_s { | |
135 ngx_stream_phase_handler_pt checker; | |
136 ngx_stream_handler_pt handler; | |
137 ngx_uint_t next; | |
138 }; | |
139 | |
140 | |
141 typedef struct { | |
142 ngx_stream_phase_handler_t *handlers; | |
143 } ngx_stream_phase_engine_t; | |
144 | |
145 | |
146 typedef struct { | |
147 ngx_array_t handlers; | |
148 } ngx_stream_phase_t; | |
6175 | 149 |
150 | |
6115 | 151 typedef struct { |
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152 ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ |
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153 ngx_array_t listen; /* ngx_stream_listen_t */ |
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154 |
6693 | 155 ngx_stream_phase_engine_t phase_engine; |
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156 |
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157 ngx_hash_t variables_hash; |
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158 |
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159 ngx_array_t variables; /* ngx_stream_variable_t */ |
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160 ngx_array_t prefix_variables; /* ngx_stream_variable_t */ |
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161 ngx_uint_t ncaptures; |
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162 |
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163 ngx_uint_t variables_hash_max_size; |
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164 ngx_uint_t variables_hash_bucket_size; |
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165 |
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166 ngx_hash_keys_arrays_t *variables_keys; |
6693 | 167 |
168 ngx_stream_phase_t phases[NGX_STREAM_LOG_PHASE + 1]; | |
6115 | 169 } ngx_stream_core_main_conf_t; |
170 | |
171 | |
172 typedef struct { | |
6693 | 173 ngx_stream_content_handler_pt handler; |
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174 |
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175 ngx_stream_conf_ctx_t *ctx; |
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176 |
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177 u_char *file_name; |
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178 ngx_uint_t line; |
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179 |
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180 ngx_flag_t tcp_nodelay; |
6694 | 181 size_t preread_buffer_size; |
182 ngx_msec_t preread_timeout; | |
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183 |
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184 ngx_log_t *error_log; |
6618 | 185 |
186 ngx_msec_t resolver_timeout; | |
187 ngx_resolver_t *resolver; | |
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188 |
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189 ngx_msec_t proxy_protocol_timeout; |
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190 |
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191 ngx_uint_t listen; /* unsigned listen:1; */ |
6115 | 192 } ngx_stream_core_srv_conf_t; |
193 | |
194 | |
195 struct ngx_stream_session_s { | |
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196 uint32_t signature; /* "STRM" */ |
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197 |
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198 ngx_connection_t *connection; |
6115 | 199 |
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200 off_t received; |
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201 time_t start_sec; |
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202 ngx_msec_t start_msec; |
6115 | 203 |
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204 ngx_log_handler_pt log_handler; |
6115 | 205 |
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206 void **ctx; |
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207 void **main_conf; |
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208 void **srv_conf; |
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209 |
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210 ngx_stream_upstream_t *upstream; |
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211 ngx_array_t *upstream_states; |
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212 /* of ngx_stream_upstream_state_t */ |
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213 ngx_stream_variable_value_t *variables; |
6115 | 214 |
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215 #if (NGX_PCRE) |
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216 ngx_uint_t ncaptures; |
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217 int *captures; |
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218 u_char *captures_data; |
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219 #endif |
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220 |
6693 | 221 ngx_int_t phase_handler; |
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222 ngx_uint_t status; |
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223 |
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224 unsigned ssl:1; |
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225 |
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226 unsigned stat_processing:1; |
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227 |
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228 unsigned health_check:1; |
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229 |
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230 unsigned limit_conn_status:2; |
6115 | 231 }; |
232 | |
233 | |
234 typedef struct { | |
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235 ngx_int_t (*preconfiguration)(ngx_conf_t *cf); |
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236 ngx_int_t (*postconfiguration)(ngx_conf_t *cf); |
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237 |
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238 void *(*create_main_conf)(ngx_conf_t *cf); |
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239 char *(*init_main_conf)(ngx_conf_t *cf, void *conf); |
6115 | 240 |
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241 void *(*create_srv_conf)(ngx_conf_t *cf); |
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242 char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, |
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243 void *conf); |
6115 | 244 } ngx_stream_module_t; |
245 | |
246 | |
247 #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ | |
248 | |
249 #define NGX_STREAM_MAIN_CONF 0x02000000 | |
250 #define NGX_STREAM_SRV_CONF 0x04000000 | |
251 #define NGX_STREAM_UPS_CONF 0x08000000 | |
252 | |
253 | |
254 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) | |
255 #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) | |
256 | |
257 | |
258 #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] | |
259 #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; | |
260 #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; | |
261 | |
262 | |
263 #define ngx_stream_get_module_main_conf(s, module) \ | |
264 (s)->main_conf[module.ctx_index] | |
265 #define ngx_stream_get_module_srv_conf(s, module) \ | |
266 (s)->srv_conf[module.ctx_index] | |
267 | |
268 #define ngx_stream_conf_get_module_main_conf(cf, module) \ | |
269 ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] | |
270 #define ngx_stream_conf_get_module_srv_conf(cf, module) \ | |
271 ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] | |
272 | |
273 #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ | |
274 (cycle->conf_ctx[ngx_stream_module.index] ? \ | |
275 ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ | |
276 ->main_conf[module.ctx_index]: \ | |
277 NULL) | |
278 | |
279 | |
6692 | 280 #define NGX_STREAM_WRITE_BUFFERED 0x10 |
281 | |
282 | |
6693 | 283 void ngx_stream_core_run_phases(ngx_stream_session_t *s); |
284 ngx_int_t ngx_stream_core_generic_phase(ngx_stream_session_t *s, | |
285 ngx_stream_phase_handler_t *ph); | |
6694 | 286 ngx_int_t ngx_stream_core_preread_phase(ngx_stream_session_t *s, |
287 ngx_stream_phase_handler_t *ph); | |
6693 | 288 ngx_int_t ngx_stream_core_content_phase(ngx_stream_session_t *s, |
289 ngx_stream_phase_handler_t *ph); | |
290 | |
291 | |
6115 | 292 void ngx_stream_init_connection(ngx_connection_t *c); |
6693 | 293 void ngx_stream_session_handler(ngx_event_t *rev); |
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294 void ngx_stream_finalize_session(ngx_stream_session_t *s, ngx_uint_t rc); |
6115 | 295 |
296 | |
297 extern ngx_module_t ngx_stream_module; | |
298 extern ngx_uint_t ngx_stream_max_module; | |
299 extern ngx_module_t ngx_stream_core_module; | |
300 | |
301 | |
6692 | 302 typedef ngx_int_t (*ngx_stream_filter_pt)(ngx_stream_session_t *s, |
303 ngx_chain_t *chain, ngx_uint_t from_upstream); | |
304 | |
305 | |
306 extern ngx_stream_filter_pt ngx_stream_top_filter; | |
307 | |
308 | |
6115 | 309 #endif /* _NGX_STREAM_H_INCLUDED_ */ |