Mercurial > hg > nginx
annotate src/core/ngx_resolver.h @ 5438:f817f9d1cded
Configure: call "make clean" for OpenSSL only if Makefile exists.
This change allows to build nginx against git checkout of OpenSSL.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author | Piotr Sikora <piotr@cloudflare.com> |
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date | Mon, 04 Nov 2013 17:00:25 -0800 |
parents | d620f497c50f |
children | 07dd5bd222ac |
rev | line source |
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1649 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
1649 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 | |
11 | |
12 #ifndef _NGX_RESOLVER_H_INCLUDED_ | |
13 #define _NGX_RESOLVER_H_INCLUDED_ | |
14 | |
15 | |
16 #define NGX_RESOLVE_A 1 | |
17 #define NGX_RESOLVE_CNAME 5 | |
18 #define NGX_RESOLVE_PTR 12 | |
19 #define NGX_RESOLVE_MX 15 | |
20 #define NGX_RESOLVE_TXT 16 | |
1965 | 21 #define NGX_RESOLVE_DNAME 39 |
1649 | 22 |
23 #define NGX_RESOLVE_FORMERR 1 | |
24 #define NGX_RESOLVE_SERVFAIL 2 | |
25 #define NGX_RESOLVE_NXDOMAIN 3 | |
26 #define NGX_RESOLVE_NOTIMP 4 | |
27 #define NGX_RESOLVE_REFUSED 5 | |
28 #define NGX_RESOLVE_TIMEDOUT NGX_ETIMEDOUT | |
29 | |
30 | |
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31 #define NGX_NO_RESOLVER (void *) -1 |
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32 |
1969 | 33 #define NGX_RESOLVER_MAX_RECURSION 50 |
34 | |
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35 |
1649 | 36 typedef struct { |
37 ngx_connection_t *connection; | |
38 struct sockaddr *sockaddr; | |
39 socklen_t socklen; | |
40 ngx_str_t server; | |
3408
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add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
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41 ngx_log_t log; |
1649 | 42 } ngx_udp_connection_t; |
43 | |
44 | |
45 typedef struct ngx_resolver_ctx_s ngx_resolver_ctx_t; | |
46 | |
47 typedef void (*ngx_resolver_handler_pt)(ngx_resolver_ctx_t *ctx); | |
48 | |
49 | |
50 typedef struct { | |
51 ngx_rbtree_node_t node; | |
52 ngx_queue_t queue; | |
53 | |
54 /* PTR: resolved name, A: name to resolve */ | |
55 u_char *name; | |
56 | |
57 u_short nlen; | |
58 u_short qlen; | |
59 | |
60 u_char *query; | |
61 | |
62 union { | |
63 in_addr_t addr; | |
64 in_addr_t *addrs; | |
65 u_char *cname; | |
66 } u; | |
67 | |
68 u_short naddrs; | |
69 u_short cnlen; | |
70 | |
71 time_t expire; | |
72 time_t valid; | |
73 | |
74 ngx_resolver_ctx_t *waiting; | |
75 } ngx_resolver_node_t; | |
76 | |
77 | |
78 typedef struct { | |
79 /* has to be pointer because of "incomplete type" */ | |
80 ngx_event_t *event; | |
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81 void *dummy; |
1649 | 82 ngx_log_t *log; |
83 | |
84 /* ident must be after 3 pointers */ | |
85 ngx_int_t ident; | |
86 | |
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87 /* simple round robin DNS peers balancer */ |
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88 ngx_array_t udp_connections; |
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89 ngx_uint_t last_connection; |
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90 |
1649 | 91 ngx_rbtree_t name_rbtree; |
92 ngx_rbtree_node_t name_sentinel; | |
93 | |
94 ngx_rbtree_t addr_rbtree; | |
95 ngx_rbtree_node_t addr_sentinel; | |
96 | |
97 ngx_queue_t name_resend_queue; | |
98 ngx_queue_t addr_resend_queue; | |
99 | |
100 ngx_queue_t name_expire_queue; | |
101 ngx_queue_t addr_expire_queue; | |
102 | |
103 time_t resend_timeout; | |
104 time_t expire; | |
105 time_t valid; | |
106 | |
107 ngx_uint_t log_level; | |
108 } ngx_resolver_t; | |
109 | |
110 | |
111 struct ngx_resolver_ctx_s { | |
112 ngx_resolver_ctx_t *next; | |
113 ngx_resolver_t *resolver; | |
114 ngx_udp_connection_t *udp_connection; | |
115 | |
116 /* ident must be after 3 pointers */ | |
117 ngx_int_t ident; | |
118 | |
119 ngx_int_t state; | |
120 ngx_int_t type; | |
121 ngx_str_t name; | |
122 | |
123 ngx_uint_t naddrs; | |
124 in_addr_t *addrs; | |
125 in_addr_t addr; | |
126 | |
127 ngx_resolver_handler_pt handler; | |
128 void *data; | |
129 ngx_msec_t timeout; | |
130 | |
131 ngx_uint_t quick; /* unsigned quick:1; */ | |
1969 | 132 ngx_uint_t recursion; |
1649 | 133 ngx_event_t *event; |
134 }; | |
135 | |
136 | |
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Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3408
diff
changeset
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137 ngx_resolver_t *ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, |
016352c19049
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Igor Sysoev <igor@sysoev.ru>
parents:
3408
diff
changeset
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138 ngx_uint_t n); |
1649 | 139 ngx_resolver_ctx_t *ngx_resolve_start(ngx_resolver_t *r, |
140 ngx_resolver_ctx_t *temp); | |
141 ngx_int_t ngx_resolve_name(ngx_resolver_ctx_t *ctx); | |
142 void ngx_resolve_name_done(ngx_resolver_ctx_t *ctx); | |
143 ngx_int_t ngx_resolve_addr(ngx_resolver_ctx_t *ctx); | |
144 void ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx); | |
145 char *ngx_resolver_strerror(ngx_int_t err); | |
146 | |
147 | |
148 #endif /* _NGX_RESOLVER_H_INCLUDED_ */ |