ngx_http_core_rewrite_phase  485 http/ngx_http.c             checker = ngx_http_core_rewrite_phase;
ngx_http_core_rewrite_phase  502 http/ngx_http.c             checker = ngx_http_core_rewrite_phase;
ngx_http_core_rewrite_phase  445 http/ngx_http_core_module.h ngx_int_t ngx_http_core_rewrite_phase(ngx_http_request_t *r,