@@ -1,209 +0,0 @@
-diff --git a/src/http/modules/ngx_http_upstream_ip_hash_module.c b/src/http/modules/ngx_http_upstream_ip_hash_module.c
-index 89ccc2b..a552044 100644
---- a/src/http/modules/ngx_http_upstream_ip_hash_module.c
-+++ b/src/http/modules/ngx_http_upstream_ip_hash_module.c
-@@ -9,6 +9,10 @@
- #include <ngx_core.h>
- #include <ngx_http.h>
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+#include "ngx_http_upstream_check_handler.h"
-+#endif
-+
-
- typedef struct {
- /* the round robin data must be first */
-@@ -208,6 +212,12 @@ ngx_http_upstream_get_ip_hash_peer(ngx_peer_connection_t *pc, void *data)
-
- if (!peer->down) {
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
-+ "get ip_hash peer, check_index: %ui",
-+ peer->check_index);
-+ if (!ngx_http_check_peer_down(peer->check_index)) {
-+#endif
- if (peer->max_fails == 0 || peer->fails < peer->max_fails) {
- break;
- }
-@@ -216,6 +226,9 @@ ngx_http_upstream_get_ip_hash_peer(ngx_peer_connection_t *pc, void *data)
- peer->checked = now;
- break;
- }
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ }
-+#endif
- }
-
- iphp->rrp.tried[n] |= m;
-diff --git a/src/http/modules/ngx_http_upstream_least_conn_module.c b/src/http/modules/ngx_http_upstream_least_conn_module.c
-index 21156ae..c57393d 100644
---- a/src/http/modules/ngx_http_upstream_least_conn_module.c
-+++ b/src/http/modules/ngx_http_upstream_least_conn_module.c
-@@ -9,6 +9,10 @@
- #include <ngx_core.h>
- #include <ngx_http.h>
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+#include "ngx_http_upstream_check_handler.h"
-+#endif
-+
-
- typedef struct {
- ngx_uint_t *conns;
-@@ -203,6 +207,16 @@ ngx_http_upstream_get_least_conn_peer(ngx_peer_connection_t *pc, void *data)
- continue;
- }
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
-+ "get least_conn peer, check_index: %ui",
-+ peer->check_index);
-+
-+ if (ngx_http_check_peer_down(peer->check_index)) {
-+ continue;
-+ }
-+#endif
-+
- if (peer->max_fails
- && peer->fails >= peer->max_fails
- && now - peer->checked <= peer->fail_timeout)
-@@ -256,6 +270,16 @@ ngx_http_upstream_get_least_conn_peer(ngx_peer_connection_t *pc, void *data)
- continue;
- }
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
-+ "get least_conn peer, check_index: %ui",
-+ peer->check_index);
-+
-+ if (ngx_http_check_peer_down(peer->check_index)) {
-+ continue;
-+ }
-+#endif
-+
- if (lcp->conns[i] * best->weight != lcp->conns[p] * peer->weight) {
- continue;
- }
-diff --git a/src/http/ngx_http_upstream_round_robin.c b/src/http/ngx_http_upstream_round_robin.c
-index 4b78cff..f077b46 100644
---- a/src/http/ngx_http_upstream_round_robin.c
-+++ b/src/http/ngx_http_upstream_round_robin.c
-@@ -9,6 +9,9 @@
- #include <ngx_core.h>
- #include <ngx_http.h>
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+#include "ngx_http_upstream_check_handler.h"
-+#endif
-
- static ngx_int_t ngx_http_upstream_cmp_servers(const void *one,
- const void *two);
-@@ -87,7 +90,17 @@ ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
- peers->peer[n].weight = server[i].weight;
- peers->peer[n].effective_weight = server[i].weight;
- peers->peer[n].current_weight = 0;
-- n++;
-+
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ if (!server[i].down) {
-+ peers->peer[n].check_index =
-+ ngx_http_check_add_peer(cf, us, &server[i].addrs[j]);
-+ }
-+ else {
-+ peers->peer[n].check_index = (ngx_uint_t) NGX_ERROR;
-+ }
-+#endif
-+ n++;
- }
- }
-
-@@ -145,6 +158,17 @@ ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
- backup->peer[n].max_fails = server[i].max_fails;
- backup->peer[n].fail_timeout = server[i].fail_timeout;
- backup->peer[n].down = server[i].down;
-+
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ if (!server[i].down) {
-+ backup->peer[n].check_index =
-+ ngx_http_check_add_peer(cf, us, &server[i].addrs[j]);
-+ }
-+ else {
-+ backup->peer[n].check_index = (ngx_uint_t) NGX_ERROR;
-+ }
-+#endif
-+
- n++;
- }
- }
-@@ -206,6 +230,9 @@ ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
- peers->peer[i].current_weight = 0;
- peers->peer[i].max_fails = 1;
- peers->peer[i].fail_timeout = 10;
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ peers->peer[i].check_index = (ngx_uint_t) NGX_ERROR;
-+#endif
- }
-
- us->peer.data = peers;
-@@ -323,6 +350,9 @@ ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
- peers->peer[0].current_weight = 0;
- peers->peer[0].max_fails = 1;
- peers->peer[0].fail_timeout = 10;
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ peers->peer[0].check_index = (ngx_uint_t) NGX_ERROR;
-+#endif
-
- } else {
-
-@@ -356,6 +386,9 @@ ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
- peers->peer[i].current_weight = 0;
- peers->peer[i].max_fails = 1;
- peers->peer[i].fail_timeout = 10;
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ peers->peer[i].check_index = (ngx_uint_t) NGX_ERROR;
-+#endif
- }
- }
-
-@@ -434,6 +467,12 @@ ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data)
- goto failed;
- }
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ if (ngx_http_check_peer_down(peer->check_index)) {
-+ goto failed;
-+ }
-+#endif
-+
- } else {
-
- /* there are several peers */
-@@ -531,6 +570,12 @@ ngx_http_upstream_get_peer(ngx_http_upstream_rr_peer_data_t *rrp)
- continue;
- }
-
-+#if (NGX_UPSTREAM_CHECK_MODULE)
-+ if (ngx_http_check_peer_down(peer->check_index)) {
-+ continue;
-+ }
-+#endif
-+
- if (peer->max_fails
- && peer->fails >= peer->max_fails
- && now - peer->checked <= peer->fail_timeout)
-diff --git a/src/http/ngx_http_upstream_round_robin.h b/src/http/ngx_http_upstream_round_robin.h
-index 3f8cbf8..1613168 100644
---- a/src/http/ngx_http_upstream_round_robin.h
-+++ b/src/http/ngx_http_upstream_round_robin.h
-@@ -30,6 +30,10 @@ typedef struct {
|