ngx_spdy_frame_flags  899 src/http/ngx_http_spdy.c     sc->flags = ngx_spdy_frame_flags(flen);
ngx_spdy_frame_flags 1938 src/http/ngx_http_spdy.c                        ngx_spdy_frame_flags(fid), ngx_spdy_frame_id(fid), val);
ngx_spdy_frame_flags 1940 src/http/ngx_http_spdy.c         if (ngx_spdy_frame_flags(fid) == NGX_SPDY_SETTINGS_FLAG_PERSISTED) {