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Cache: add support for Cache-Control's s-maxage response directive.

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Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
This commit is contained in:
Piotr Sikora 2014-11-18 17:07:14 -08:00
parent 1b79cb211d
commit 3ecac9eaba
1 changed files with 14 additions and 8 deletions
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22
src/http/ngx_http_upstream.c
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@ -3934,7 +3934,7 @@ ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
#if (NGX_HTTP_CACHE) #if (NGX_HTTP_CACHE)
{ {
u_char *p, *last; u_char *p, *start, *last;
ngx_int_t n; ngx_int_t n;
if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) { if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
@ -3949,18 +3949,24 @@ ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
return NGX_OK; return NGX_OK;
} }
p = h->value.data; start = h->value.data;
last = p + h->value.len; last = start + h->value.len;
if (ngx_strlcasestrn(p, last, (u_char *) "no-cache", 8 - 1) != NULL if (ngx_strlcasestrn(start, last, (u_char *) "no-cache", 8 - 1) != NULL
|| ngx_strlcasestrn(p, last, (u_char *) "no-store", 8 - 1) != NULL || ngx_strlcasestrn(start, last, (u_char *) "no-store", 8 - 1) != NULL
|| ngx_strlcasestrn(p, last, (u_char *) "private", 7 - 1) != NULL) || ngx_strlcasestrn(start, last, (u_char *) "private", 7 - 1) != NULL)
{ {
u->cacheable = 0; u->cacheable = 0;
return NGX_OK; return NGX_OK;
} }
p = ngx_strlcasestrn(p, last, (u_char *) "max-age=", 8 - 1); p = ngx_strlcasestrn(start, last, (u_char *) "s-maxage=", 9 - 1);
offset = 9;
if (p == NULL) {
p = ngx_strlcasestrn(start, last, (u_char *) "max-age=", 8 - 1);
offset = 8;
}
if (p == NULL) { if (p == NULL) {
return NGX_OK; return NGX_OK;
@ -3968,7 +3974,7 @@ ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
n = 0; n = 0;
for (p += 8; p < last; p++) { for (p += offset; p < last; p++) {
if (*p == ',' || *p == ';' || *p == ' ') { if (*p == ',' || *p == ';' || *p == ' ') {
break; break;
} }