NGX_HTTP_LOCK    4530 src/http/ngx_http_core_module.c    { (u_char *) "LOCK",      (uint32_t) ~NGX_HTTP_LOCK },
NGX_HTTP_LOCK     198 src/http/ngx_http_parse.c                             r->method = NGX_HTTP_LOCK;
NGX_HTTP_LOCK    2852 src/http/ngx_http_spdy.c         { 4, "LOCK",      NGX_HTTP_LOCK },