annotate src/http/ngx_http_upstream_round_robin.h @ 674:4dcaf40cc702 NGINX_1_3_0

nginx 1.3.0 *) Feature: the "debug_connection" directive now supports IPv6 addresses and the "unix:" parameter. *) Feature: the "set_real_ip_from" directive and the "proxy" parameter of the "geo" directive now support IPv6 addresses. *) Feature: the "real_ip_recursive", "geoip_proxy", and "geoip_proxy_recursive" directives. *) Feature: the "proxy_recursive" parameter of the "geo" directive. *) Bugfix: a segmentation fault might occur in a worker process if the "resolver" directive was used. *) Bugfix: a segmentation fault might occur in a worker process if the "fastcgi_pass", "scgi_pass", or "uwsgi_pass" directives were used and backend returned incorrect response. *) Bugfix: a segmentation fault might occur in a worker process if the "rewrite" directive was used and new request arguments in a replacement used variables. *) Bugfix: nginx might hog CPU if the open file resource limit was reached. *) Bugfix: nginx might loop infinitely over backends if the "proxy_next_upstream" directive with the "http_404" parameter was used and there were backup servers specified in an upstream block. *) Bugfix: adding the "down" parameter of the "server" directive might cause unneeded client redistribution among backend servers if the "ip_hash" directive was used. *) Bugfix: socket leak. Thanks to Yichun Zhang. *) Bugfix: in the ngx_http_fastcgi_module.
author Igor Sysoev <http://sysoev.ru>
date Tue, 15 May 2012 00:00:00 +0400
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children bfa81a0490a2
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
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9 #define _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_http.h>
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17 typedef struct {
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18 struct sockaddr *sockaddr;
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19 socklen_t socklen;
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20 ngx_str_t name;
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22 ngx_int_t current_weight;
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23 ngx_int_t effective_weight;
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24 ngx_int_t weight;
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26 ngx_uint_t fails;
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27 time_t accessed;
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28 time_t checked;
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30 ngx_uint_t max_fails;
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31 time_t fail_timeout;
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33 ngx_uint_t down; /* unsigned down:1; */
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35 #if (NGX_HTTP_SSL)
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36 ngx_ssl_session_t *ssl_session; /* local to a process */
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37 #endif
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38 } ngx_http_upstream_rr_peer_t;
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41 typedef struct ngx_http_upstream_rr_peers_s ngx_http_upstream_rr_peers_t;
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43 struct ngx_http_upstream_rr_peers_s {
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44 ngx_uint_t single; /* unsigned single:1; */
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45 ngx_uint_t number;
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46 ngx_uint_t last_cached;
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48 /* ngx_mutex_t *mutex; */
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49 ngx_connection_t **cached;
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51 ngx_str_t *name;
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53 ngx_http_upstream_rr_peers_t *next;
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55 ngx_http_upstream_rr_peer_t peer[1];
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56 };
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59 typedef struct {
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60 ngx_http_upstream_rr_peers_t *peers;
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61 ngx_uint_t current;
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62 uintptr_t *tried;
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63 uintptr_t data;
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64 } ngx_http_upstream_rr_peer_data_t;
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67 ngx_int_t ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
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68 ngx_http_upstream_srv_conf_t *us);
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69 ngx_int_t ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
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70 ngx_http_upstream_srv_conf_t *us);
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71 ngx_int_t ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
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72 ngx_http_upstream_resolved_t *ur);
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73 ngx_int_t ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc,
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74 void *data);
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75 void ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
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76 void *data, ngx_uint_t state);
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78 #if (NGX_HTTP_SSL)
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79 ngx_int_t
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80 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
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81 void *data);
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82 void ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
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83 void *data);
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84 #endif
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87 #endif /* _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */