Mercurial > hg > nginx
diff src/http/ngx_http_variables.c @ 7034:1b068a4e82d8
Added support for trailers in HTTP responses.
Example:
ngx_table_elt_t *h;
h = ngx_list_push(&r->headers_out.trailers);
if (h == NULL) {
return NGX_ERROR;
}
ngx_str_set(&h->key, "Fun");
ngx_str_set(&h->value, "with trailers");
h->hash = ngx_hash_key_lc(h->key.data, h->key.len);
The code above adds "Fun: with trailers" trailer to the response.
Modules that want to emit trailers must set r->expect_trailers = 1
in header filter, otherwise they might not be emitted for HTTP/1.1
responses that aren't already chunked.
This change also adds $sent_trailer_* variables.
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
| author | Piotr Sikora <piotrsikora@google.com> |
|---|---|
| date | Fri, 24 Mar 2017 03:37:34 -0700 |
| parents | d2b2ff157da5 |
| children | 7f480434c7f2 |
line wrap: on
line diff
--- a/src/http/ngx_http_variables.c +++ b/src/http/ngx_http_variables.c @@ -38,6 +38,8 @@ static ngx_int_t ngx_http_variable_unkno ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); +static ngx_int_t ngx_http_variable_unknown_trailer_out(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_variable_request_line(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_variable_cookie(ngx_http_request_t *r, @@ -365,6 +367,9 @@ static ngx_http_variable_t ngx_http_cor { ngx_string("sent_http_"), NULL, ngx_http_variable_unknown_header_out, 0, NGX_HTTP_VAR_PREFIX, 0 }, + { ngx_string("sent_trailer_"), NULL, ngx_http_variable_unknown_trailer_out, + 0, NGX_HTTP_VAR_PREFIX, 0 }, + { ngx_string("cookie_"), NULL, ngx_http_variable_cookie, 0, NGX_HTTP_VAR_PREFIX, 0 }, @@ -934,6 +939,16 @@ ngx_http_variable_unknown_header_out(ngx } +static ngx_int_t +ngx_http_variable_unknown_trailer_out(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data) +{ + return ngx_http_variable_unknown_header(v, (ngx_str_t *) data, + &r->headers_out.trailers.part, + sizeof("sent_trailer_") - 1); +} + + ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var, ngx_list_part_t *part, size_t prefix)