Mercurial > hg > nginx-quic
diff src/http/ngx_http_core_module.c @ 5733:e491b26fa5a1
Entity tags: downgrade strong etags to weak ones as needed.
See http://mailman.nginx.org/pipermail/nginx-devel/2013-November/004523.html.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 26 Jun 2014 02:21:01 +0400 |
parents | 790ba7484bb6 |
children | c5ec6944de98 |
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--- a/src/http/ngx_http_core_module.c +++ b/src/http/ngx_http_core_module.c @@ -1851,6 +1851,46 @@ ngx_http_set_etag(ngx_http_request_t *r) } +void +ngx_http_weak_etag(ngx_http_request_t *r) +{ + size_t len; + u_char *p; + ngx_table_elt_t *etag; + + etag = r->headers_out.etag; + + if (etag == NULL) { + return; + } + + if (etag->value.len > 2 + && etag->value.data[0] == 'W' + && etag->value.data[1] == '/') + { + return; + } + + if (etag->value.len < 1 || etag->value.data[0] != '"') { + r->headers_out.etag->hash = 0; + r->headers_out.etag = NULL; + return; + } + + p = ngx_pnalloc(r->pool, etag->value.len + 2); + if (p == NULL) { + r->headers_out.etag->hash = 0; + r->headers_out.etag = NULL; + return; + } + + len = ngx_sprintf(p, "W/%V", &etag->value) - p; + + etag->value.data = p; + etag->value.len = len; +} + + ngx_int_t ngx_http_send_response(ngx_http_request_t *r, ngx_uint_t status, ngx_str_t *ct, ngx_http_complex_value_t *cv)