Mercurial > hg > nginx
annotate src/core/ngx_resolver.h @ 5476:950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Fri, 06 Dec 2013 14:30:28 +0400 |
| parents | 07dd5bd222ac |
| children | 98876ce2a7fd |
| rev | line source |
|---|---|
| 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; | |
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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 | |
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Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
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57 #if (NGX_HAVE_INET6) |
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Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
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58 /* PTR: IPv6 address to resolve (IPv4 address is in rbtree node key) */ |
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parents:
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diff
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59 struct in6_addr addr6; |
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parents:
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diff
changeset
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60 #endif |
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Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
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61 |
| 1649 | 62 u_short nlen; |
| 63 u_short qlen; | |
| 64 | |
| 65 u_char *query; | |
| 66 | |
| 67 union { | |
| 68 in_addr_t addr; | |
| 69 in_addr_t *addrs; | |
| 70 u_char *cname; | |
| 71 } u; | |
| 72 | |
| 73 u_short naddrs; | |
| 74 u_short cnlen; | |
| 75 | |
| 76 time_t expire; | |
| 77 time_t valid; | |
| 78 | |
| 79 ngx_resolver_ctx_t *waiting; | |
| 80 } ngx_resolver_node_t; | |
| 81 | |
| 82 | |
| 83 typedef struct { | |
| 84 /* has to be pointer because of "incomplete type" */ | |
| 85 ngx_event_t *event; | |
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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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86 void *dummy; |
| 1649 | 87 ngx_log_t *log; |
| 88 | |
| 89 /* ident must be after 3 pointers */ | |
| 90 ngx_int_t ident; | |
| 91 | |
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parents:
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diff
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92 /* simple round robin DNS peers balancer */ |
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parents:
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93 ngx_array_t udp_connections; |
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parents:
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diff
changeset
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94 ngx_uint_t last_connection; |
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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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95 |
| 1649 | 96 ngx_rbtree_t name_rbtree; |
| 97 ngx_rbtree_node_t name_sentinel; | |
| 98 | |
| 99 ngx_rbtree_t addr_rbtree; | |
| 100 ngx_rbtree_node_t addr_sentinel; | |
| 101 | |
| 102 ngx_queue_t name_resend_queue; | |
| 103 ngx_queue_t addr_resend_queue; | |
| 104 | |
| 105 ngx_queue_t name_expire_queue; | |
| 106 ngx_queue_t addr_expire_queue; | |
| 107 | |
|
5476
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
108 #if (NGX_HAVE_INET6) |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
109 ngx_rbtree_t addr6_rbtree; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
110 ngx_rbtree_node_t addr6_sentinel; |
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950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
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111 ngx_queue_t addr6_resend_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
112 ngx_queue_t addr6_expire_queue; |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
113 #endif |
|
950c9ed3e66f
Resolver: implemented IPv6 address to name resolving.
Ruslan Ermilov <ru@nginx.com>
parents:
5475
diff
changeset
|
114 |
| 1649 | 115 time_t resend_timeout; |
| 116 time_t expire; | |
| 117 time_t valid; | |
| 118 | |
| 119 ngx_uint_t log_level; | |
| 120 } ngx_resolver_t; | |
| 121 | |
| 122 | |
| 123 struct ngx_resolver_ctx_s { | |
| 124 ngx_resolver_ctx_t *next; | |
| 125 ngx_resolver_t *resolver; | |
| 126 ngx_udp_connection_t *udp_connection; | |
| 127 | |
| 128 /* ident must be after 3 pointers */ | |
| 129 ngx_int_t ident; | |
| 130 | |
| 131 ngx_int_t state; | |
| 132 ngx_int_t type; | |
| 133 ngx_str_t name; | |
| 134 | |
| 135 ngx_uint_t naddrs; | |
|
5475
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
136 ngx_addr_t *addrs; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
137 ngx_addr_t addr; |
|
07dd5bd222ac
Changed resolver API to use ngx_addr_t.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
138 struct sockaddr_in sin; |
| 1649 | 139 |
| 140 ngx_resolver_handler_pt handler; | |
| 141 void *data; | |
| 142 ngx_msec_t timeout; | |
| 143 | |
| 144 ngx_uint_t quick; /* unsigned quick:1; */ | |
| 1969 | 145 ngx_uint_t recursion; |
| 1649 | 146 ngx_event_t *event; |
| 147 }; | |
| 148 | |
| 149 | |
|
4225
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3408
diff
changeset
|
150 ngx_resolver_t *ngx_resolver_create(ngx_conf_t *cf, ngx_str_t *names, |
|
016352c19049
Support of several servers in the "resolver" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3408
diff
changeset
|
151 ngx_uint_t n); |
| 1649 | 152 ngx_resolver_ctx_t *ngx_resolve_start(ngx_resolver_t *r, |
| 153 ngx_resolver_ctx_t *temp); | |
| 154 ngx_int_t ngx_resolve_name(ngx_resolver_ctx_t *ctx); | |
| 155 void ngx_resolve_name_done(ngx_resolver_ctx_t *ctx); | |
| 156 ngx_int_t ngx_resolve_addr(ngx_resolver_ctx_t *ctx); | |
| 157 void ngx_resolve_addr_done(ngx_resolver_ctx_t *ctx); | |
| 158 char *ngx_resolver_strerror(ngx_int_t err); | |
| 159 | |
| 160 | |
| 161 #endif /* _NGX_RESOLVER_H_INCLUDED_ */ |