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Accept-Encoding refactoring: test first the most common case "gzip,"

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This commit is contained in:
Igor Sysoev 2011-07-30 07:34:12 +00:00
parent 6652cc5962
commit d743a2339e
1 changed files with 27 additions and 7 deletions
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34
src/http/ngx_http_core_module.c
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@ -2013,23 +2013,43 @@ ngx_http_auth_basic_user(ngx_http_request_t *r)
ngx_int_t ngx_int_t
ngx_http_gzip_ok(ngx_http_request_t *r) ngx_http_gzip_ok(ngx_http_request_t *r)
{ {
u_char *g;
time_t date, expires; time_t date, expires;
ngx_uint_t p; ngx_uint_t p;
ngx_array_t *cc; ngx_array_t *cc;
ngx_table_elt_t *e, *d; ngx_table_elt_t *e, *d, *ae;
ngx_http_core_loc_conf_t *clcf; ngx_http_core_loc_conf_t *clcf;
r->gzip_tested = 1; r->gzip_tested = 1;
if (r != r->main if (r != r->main) {
|| r->headers_in.accept_encoding == NULL
|| ngx_strcasestrn(r->headers_in.accept_encoding->value.data,
"gzip", 4 - 1)
== NULL)
{
return NGX_DECLINED; return NGX_DECLINED;
} }
ae = r->headers_in.accept_encoding;
if (ae == NULL) {
return NGX_DECLINED;
}
if (ngx_strncmp(ae->value.data, "gzip,", 5) == 0) {
/*
* test for the most common case "gzip,...":
* MSIE: "gzip, deflate"
* Firefox: "gzip,deflate"
* Chrome: "gzip,deflate,sdch"
* Safari: "gzip, deflate"
* Opera: "gzip, deflate"
*/
goto found;
}
g = ngx_strcasestrn(ae->value.data, "gzip", 4 - 1);
if (g == NULL) {
return NGX_DECLINED;
}
found:
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (r->headers_in.msie6 && clcf->gzip_disable_msie6) { if (r->headers_in.msie6 && clcf->gzip_disable_msie6) {