save_session       51 event/ngx_event_connect.h     ngx_event_save_peer_session_pt   save_session;
save_session     1247 http/ngx_http_upstream.c             u->peer.save_session(&u->peer, u->peer.data);
save_session      242 http/ngx_http_upstream_round_robin.c     r->upstream->peer.save_session =
save_session      348 http/ngx_http_upstream_round_robin.c     r->upstream->peer.save_session =