Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_process_cycle.h @ 7354:1812f1d79d84
Fixed socket leak with "return 444" in error_page (ticket #274).
Socket leak was observed in the following configuration:
error_page 400 = /close;
location = /close {
return 444;
}
The problem is that "return 444" triggers termination of the request,
and due to error_page termination thinks that it needs to use a posted
request to clear stack. But at the early request processing where 400
errors are generated there are no ngx_http_run_posted_requests() calls,
so the request is only terminated after an external event.
Variants of the problem include "error_page 497" instead (ticket #695)
and various other errors generated during early request processing
(405, 414, 421, 494, 495, 496, 501, 505).
The same problem can be also triggered with "return 499" and "return 408"
as both codes trigger ngx_http_terminate_request(), much like "return 444".
To fix this, the patch adds ngx_http_run_posted_requests() calls to
ngx_http_process_request_line() and ngx_http_process_request_headers()
functions, and to ngx_http_v2_run_request() and ngx_http_v2_push_stream()
functions in HTTP/2.
Since the ngx_http_process_request() function is now only called via
other functions which call ngx_http_run_posted_requests(), the call
there is no longer needed and was removed.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 21 Sep 2018 15:59:30 +0300 |
parents | b4cc553aafeb |
children |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_PROCESS_CYCLE_H_INCLUDED_ |
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9 #define _NGX_PROCESS_CYCLE_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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16 #define NGX_CMD_OPEN_CHANNEL 1 |
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17 #define NGX_CMD_CLOSE_CHANNEL 2 |
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18 #define NGX_CMD_QUIT 3 |
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19 #define NGX_CMD_TERMINATE 4 |
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20 #define NGX_CMD_REOPEN 5 |
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21 |
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22 |
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23 #define NGX_PROCESS_SINGLE 0 |
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24 #define NGX_PROCESS_MASTER 1 |
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25 #define NGX_PROCESS_SIGNALLER 2 |
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26 #define NGX_PROCESS_WORKER 3 |
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27 #define NGX_PROCESS_HELPER 4 |
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28 |
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29 |
3018 | 30 typedef struct { |
31 ngx_event_handler_pt handler; | |
32 char *name; | |
33 ngx_msec_t delay; | |
34 } ngx_cache_manager_ctx_t; | |
35 | |
36 | |
452 | 37 void ngx_master_process_cycle(ngx_cycle_t *cycle); |
38 void ngx_single_process_cycle(ngx_cycle_t *cycle); | |
278
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39 |
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41 extern ngx_uint_t ngx_process; |
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42 extern ngx_uint_t ngx_worker; |
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43 extern ngx_pid_t ngx_pid; |
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44 extern ngx_pid_t ngx_new_binary; |
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45 extern ngx_uint_t ngx_inherited; |
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46 extern ngx_uint_t ngx_daemonized; |
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47 extern ngx_uint_t ngx_exiting; |
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48 |
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49 extern sig_atomic_t ngx_reap; |
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50 extern sig_atomic_t ngx_sigio; |
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51 extern sig_atomic_t ngx_sigalrm; |
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52 extern sig_atomic_t ngx_quit; |
477 | 53 extern sig_atomic_t ngx_debug_quit; |
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54 extern sig_atomic_t ngx_terminate; |
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55 extern sig_atomic_t ngx_noaccept; |
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56 extern sig_atomic_t ngx_reconfigure; |
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57 extern sig_atomic_t ngx_reopen; |
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58 extern sig_atomic_t ngx_change_binary; |
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59 |
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60 |
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61 #endif /* _NGX_PROCESS_CYCLE_H_INCLUDED_ */ |