NGX_HTTP_UNLOCK  4531 src/http/ngx_http_core_module.c    { (u_char *) "UNLOCK",    (uint32_t) ~NGX_HTTP_UNLOCK },
NGX_HTTP_UNLOCK   237 src/http/ngx_http_parse.c                         r->method = NGX_HTTP_UNLOCK;
NGX_HTTP_UNLOCK  2853 src/http/ngx_http_spdy.c         { 6, "UNLOCK",    NGX_HTTP_UNLOCK },