NGX_HTTP_TRACE    224 src/http/ngx_http_parse.c                         r->method = NGX_HTTP_TRACE;
NGX_HTTP_TRACE   1786 src/http/ngx_http_request.c     if (r->method & NGX_HTTP_TRACE) {
NGX_HTTP_TRACE   2855 src/http/ngx_http_spdy.c         { 5, "TRACE",     NGX_HTTP_TRACE }