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_ */ |