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Resolver: introduced valid field in resolver responses.

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It hints the amount of time a response could be considered
as valid.
This commit is contained in:
Dmitry Volyntsev 2016-03-23 17:44:36 +03:00
parent 0f4315f998
commit 98f222c6c1
2 changed files with 8 additions and 0 deletions
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7
src/core/ngx_resolver.c
View File

@ -551,6 +551,7 @@ ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx,
do { do {
ctx->state = NGX_OK; ctx->state = NGX_OK;
ctx->valid = rn->valid;
ctx->naddrs = naddrs; ctx->naddrs = naddrs;
if (addrs == NULL) { if (addrs == NULL) {
@ -597,6 +598,7 @@ ngx_resolve_name_locked(ngx_resolver_t *r, ngx_resolver_ctx_t *ctx,
do { do {
ctx->state = NGX_RESOLVE_NXDOMAIN; ctx->state = NGX_RESOLVE_NXDOMAIN;
ctx->valid = ngx_time() + (r->valid ? r->valid : 10);
next = ctx->next; next = ctx->next;
ctx->handler(ctx); ctx->handler(ctx);
@ -859,6 +861,7 @@ ngx_resolve_addr(ngx_resolver_ctx_t *ctx)
/* unlock addr mutex */ /* unlock addr mutex */
ctx->state = NGX_OK; ctx->state = NGX_OK;
ctx->valid = rn->valid;
ctx->handler(ctx); ctx->handler(ctx);
@ -1948,6 +1951,7 @@ ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n,
while (next) { while (next) {
ctx = next; ctx = next;
ctx->state = code; ctx->state = code;
ctx->valid = ngx_time() + (r->valid ? r->valid : 10);
next = ctx->next; next = ctx->next;
ctx->handler(ctx); ctx->handler(ctx);
@ -2262,6 +2266,7 @@ ngx_resolver_process_a(ngx_resolver_t *r, u_char *buf, size_t n,
while (next) { while (next) {
ctx = next; ctx = next;
ctx->state = NGX_OK; ctx->state = NGX_OK;
ctx->valid = rn->valid;
ctx->naddrs = naddrs; ctx->naddrs = naddrs;
if (addrs == NULL) { if (addrs == NULL) {
@ -2541,6 +2546,7 @@ valid:
while (next) { while (next) {
ctx = next; ctx = next;
ctx->state = code; ctx->state = code;
ctx->valid = ngx_time() + (r->valid ? r->valid : 10);
next = ctx->next; next = ctx->next;
ctx->handler(ctx); ctx->handler(ctx);
@ -2675,6 +2681,7 @@ ptr:
while (next) { while (next) {
ctx = next; ctx = next;
ctx->state = NGX_OK; ctx->state = NGX_OK;
ctx->valid = rn->valid;
ctx->name = name; ctx->name = name;
next = ctx->next; next = ctx->next;

1
src/core/ngx_resolver.h
View File

@ -164,6 +164,7 @@ struct ngx_resolver_ctx_s {
ngx_int_t state; ngx_int_t state;
ngx_str_t name; ngx_str_t name;
time_t valid;
ngx_uint_t naddrs; ngx_uint_t naddrs;
ngx_addr_t *addrs; ngx_addr_t *addrs;
ngx_addr_t addr; ngx_addr_t addr;