Mercurial > hg > nginx
annotate src/core/ngx_resolver.h @ 1965:14463ae77723
take into account DNAME
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 10 Apr 2008 17:12:21 +0000 |
parents | c0f873458e2b |
children | 41fd9a2e0755 |
rev | line source |
---|---|
1649 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 | |
10 | |
11 #ifndef _NGX_RESOLVER_H_INCLUDED_ | |
12 #define _NGX_RESOLVER_H_INCLUDED_ | |
13 | |
14 | |
15 #define NGX_RESOLVE_A 1 | |
16 #define NGX_RESOLVE_CNAME 5 | |
17 #define NGX_RESOLVE_PTR 12 | |
18 #define NGX_RESOLVE_MX 15 | |
19 #define NGX_RESOLVE_TXT 16 | |
1965 | 20 #define NGX_RESOLVE_DNAME 39 |
1649 | 21 |
22 #define NGX_RESOLVE_FORMERR 1 | |
23 #define NGX_RESOLVE_SERVFAIL 2 | |
24 #define NGX_RESOLVE_NXDOMAIN 3 | |
25 #define NGX_RESOLVE_NOTIMP 4 | |
26 #define NGX_RESOLVE_REFUSED 5 | |
27 #define NGX_RESOLVE_TIMEDOUT NGX_ETIMEDOUT | |
28 | |
29 | |
1683
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1649
diff
changeset
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30 #define NGX_NO_RESOLVER (void *) -1 |
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1649
diff
changeset
|
31 |
1e0b028055ec
allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
1649
diff
changeset
|
32 |
1649 | 33 typedef struct { |
34 ngx_connection_t *connection; | |
35 struct sockaddr *sockaddr; | |
36 socklen_t socklen; | |
37 ngx_str_t server; | |
38 ngx_log_t *log; | |
39 } ngx_udp_connection_t; | |
40 | |
41 | |
42 typedef struct ngx_resolver_ctx_s ngx_resolver_ctx_t; | |
43 | |
44 typedef void (*ngx_resolver_handler_pt)(ngx_resolver_ctx_t *ctx); | |
45 | |
46 | |
47 typedef struct { | |
48 ngx_rbtree_node_t node; | |
49 ngx_queue_t queue; | |
50 | |
51 /* PTR: resolved name, A: name to resolve */ | |
52 u_char *name; | |
53 | |
54 u_short nlen; | |
55 u_short qlen; | |
56 | |
57 u_char *query; | |
58 | |
59 union { | |
60 in_addr_t addr; | |
61 in_addr_t *addrs; | |
62 u_char *cname; | |
63 } u; | |
64 | |
65 u_short naddrs; | |
66 u_short cnlen; | |
67 | |
68 time_t expire; | |
69 time_t valid; | |
70 | |
71 ngx_resolver_ctx_t *waiting; | |
72 } ngx_resolver_node_t; | |
73 | |
74 | |
75 typedef struct { | |
76 /* has to be pointer because of "incomplete type" */ | |
77 ngx_event_t *event; | |
78 | |
79 /* TODO: DNS peers balancer */ | |
80 /* STUB */ | |
81 ngx_udp_connection_t *udp_connection; | |
82 | |
83 ngx_log_t *log; | |
84 | |
85 /* ident must be after 3 pointers */ | |
86 ngx_int_t ident; | |
87 | |
88 ngx_rbtree_t name_rbtree; | |
89 ngx_rbtree_node_t name_sentinel; | |
90 | |
91 ngx_rbtree_t addr_rbtree; | |
92 ngx_rbtree_node_t addr_sentinel; | |
93 | |
94 ngx_queue_t name_resend_queue; | |
95 ngx_queue_t addr_resend_queue; | |
96 | |
97 ngx_queue_t name_expire_queue; | |
98 ngx_queue_t addr_expire_queue; | |
99 | |
100 time_t resend_timeout; | |
101 time_t expire; | |
102 time_t valid; | |
103 | |
104 ngx_uint_t log_level; | |
105 } ngx_resolver_t; | |
106 | |
107 | |
108 struct ngx_resolver_ctx_s { | |
109 ngx_resolver_ctx_t *next; | |
110 ngx_resolver_t *resolver; | |
111 ngx_udp_connection_t *udp_connection; | |
112 | |
113 /* ident must be after 3 pointers */ | |
114 ngx_int_t ident; | |
115 | |
116 ngx_int_t state; | |
117 ngx_int_t type; | |
118 ngx_str_t name; | |
119 | |
120 ngx_uint_t naddrs; | |
121 in_addr_t *addrs; | |
122 in_addr_t addr; | |
123 | |
124 /* TODO: DNS peers balancer ctx */ | |
125 | |
126 ngx_resolver_handler_pt handler; | |
127 void *data; | |
128 ngx_msec_t timeout; | |
129 | |
130 ngx_uint_t quick; /* unsigned quick:1; */ | |
131 ngx_event_t *event; | |
132 }; | |
133 | |
134 | |
1913
c0f873458e2b
use cf->cycle->new_log because at merge stage cf->pool->log is old log
Igor Sysoev <igor@sysoev.ru>
parents:
1906
diff
changeset
|
135 ngx_resolver_t *ngx_resolver_create(ngx_conf_t *cf, ngx_peer_addr_t *addr); |
1649 | 136 ngx_resolver_ctx_t *ngx_resolve_start(ngx_resolver_t *r, |
137 ngx_resolver_ctx_t *temp); | |
138 ngx_int_t ngx_resolve_name(ngx_resolver_ctx_t *ctx); | |
139 void ngx_resolve_name_done(ngx_resolver_ctx_t *ctx); | |
140 ngx_int_t ngx_resolve_addr(ngx_resolver_ctx_t *ctx); | |
141 void ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx); | |
142 char *ngx_resolver_strerror(ngx_int_t err); | |
143 | |
144 | |
145 #endif /* _NGX_RESOLVER_H_INCLUDED_ */ |