Mercurial > hg > nginx
annotate src/core/ngx_resolver.h @ 4450:4919fb357a5d stable-1.0
Merge of r4406, r4413: copyrights updated.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sun, 05 Feb 2012 20:02:59 +0000 |
| parents | 71193a456616 |
| children |
| rev | line source |
|---|---|
| 1649 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
|
4450
4919fb357a5d
Merge of r4406, r4413: copyrights updated.
Maxim Dounin <mdounin@mdounin.ru>
parents:
3408
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changeset
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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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allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
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31 #define NGX_NO_RESOLVER (void *) -1 |
|
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allow to use IP addresses without defined resolver
Igor Sysoev <igor@sysoev.ru>
parents:
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changeset
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32 |
| 1969 | 33 #define NGX_RESOLVER_MAX_RECURSION 50 |
| 34 | |
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changeset
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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; | |
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71193a456616
add context to a resolver log
Igor Sysoev <igor@sysoev.ru>
parents:
3269
diff
changeset
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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; | |
| 81 | |
| 82 /* TODO: DNS peers balancer */ | |
| 83 /* STUB */ | |
| 84 ngx_udp_connection_t *udp_connection; | |
| 85 | |
| 86 ngx_log_t *log; | |
| 87 | |
| 88 /* ident must be after 3 pointers */ | |
| 89 ngx_int_t ident; | |
| 90 | |
| 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 /* TODO: DNS peers balancer ctx */ | |
| 128 | |
| 129 ngx_resolver_handler_pt handler; | |
| 130 void *data; | |
| 131 ngx_msec_t timeout; | |
| 132 | |
| 133 ngx_uint_t quick; /* unsigned quick:1; */ | |
| 1969 | 134 ngx_uint_t recursion; |
| 1649 | 135 ngx_event_t *event; |
| 136 }; | |
| 137 | |
| 138 | |
|
3269
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rename ngx_peer_addr_t to ngx_addr_t
Igor Sysoev <igor@sysoev.ru>
parents:
1969
diff
changeset
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139 ngx_resolver_t *ngx_resolver_create(ngx_conf_t *cf, ngx_addr_t *addr); |
| 1649 | 140 ngx_resolver_ctx_t *ngx_resolve_start(ngx_resolver_t *r, |
| 141 ngx_resolver_ctx_t *temp); | |
| 142 ngx_int_t ngx_resolve_name(ngx_resolver_ctx_t *ctx); | |
| 143 void ngx_resolve_name_done(ngx_resolver_ctx_t *ctx); | |
| 144 ngx_int_t ngx_resolve_addr(ngx_resolver_ctx_t *ctx); | |
| 145 void ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx); | |
| 146 char *ngx_resolver_strerror(ngx_int_t err); | |
| 147 | |
| 148 | |
| 149 #endif /* _NGX_RESOLVER_H_INCLUDED_ */ |