ngx_http_free_request  127 src/http/ngx_http.h void ngx_http_free_request(ngx_http_request_t *r, ngx_int_t rc);
ngx_http_free_request 2901 src/http/ngx_http_request.c     ngx_http_free_request(r, 0);
ngx_http_free_request 3410 src/http/ngx_http_request.c     ngx_http_free_request(r, rc);
ngx_http_free_request 2445 src/http/ngx_http_spdy.c         ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
ngx_http_free_request 2453 src/http/ngx_http_spdy.c         ngx_http_free_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
ngx_http_free_request 3416 src/http/ngx_http_spdy.c     ngx_http_free_request(stream->request, rc);