Mercurial > hg > nginx-quic
changeset 6531:59f8f2dd8b31
Variable $request_id.
The variable contains text representation based on random data, usable as
a unique request identifier.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Tue, 26 Apr 2016 19:31:46 +0300 |
parents | 1d0e03db9f8e |
children | 2f98b5709d79 |
files | src/http/ngx_http_variables.c |
diffstat | 1 files changed, 47 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/src/http/ngx_http_variables.c +++ b/src/http/ngx_http_variables.c @@ -98,6 +98,8 @@ static ngx_int_t ngx_http_variable_reque ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_variable_request_time(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); +static ngx_int_t ngx_http_variable_request_id(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_variable_status(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); @@ -274,6 +276,10 @@ static ngx_http_variable_t ngx_http_cor { ngx_string("request_time"), NULL, ngx_http_variable_request_time, 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, + { ngx_string("request_id"), NULL, + ngx_http_variable_request_id, + 0, 0, 0 }, + { ngx_string("status"), NULL, ngx_http_variable_status, 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, @@ -2068,6 +2074,47 @@ ngx_http_variable_request_time(ngx_http_ static ngx_int_t +ngx_http_variable_request_id(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data) +{ + u_char *id; + +#if (NGX_OPENSSL) + u_char random_bytes[16]; +#endif + + id = ngx_pnalloc(r->pool, 32); + if (id == NULL) { + return NGX_ERROR; + } + + v->valid = 1; + v->no_cacheable = 0; + v->not_found = 0; + + v->len = 32; + v->data = id; + +#if (NGX_OPENSSL) + + if (RAND_bytes(random_bytes, 16) == 1) { + ngx_hex_dump(id, random_bytes, 16); + return NGX_OK; + } + + ngx_ssl_error(NGX_LOG_ERR, r->connection->log, 0, "RAND_bytes() failed"); + +#endif + + ngx_sprintf(id, "%08xD%08xD%08xD%08xD", + (uint32_t) ngx_random(), (uint32_t) ngx_random(), + (uint32_t) ngx_random(), (uint32_t) ngx_random()); + + return NGX_OK; +} + + +static ngx_int_t ngx_http_variable_connection(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) {