--- a/src/event/ngx_event_connect.c
+++ b/src/event/ngx_event_connect.c
@@ -38,7 +38,10 @@ int ngx_event_connect_peer(ngx_peer_conn
     pc->cached = 0;
     pc->connection = NULL;
 
-    if (pc->peers->number > 1) {
+    if (pc->peers->number == 1) {
+        peer = &pc->peers->peers[0];
+
+    } else {
 
         /* there are several peers */
 
@@ -53,7 +56,10 @@ int ngx_event_connect_peer(ngx_peer_conn
             }
         }
 
-        if (pc->peers->max_fails > 0) {
+        if (pc->peers->max_fails == 0) {
+            peer = &pc->peers->peers[pc->cur_peer];
+
+        } else {
 
             /* the peers support a fault tolerance */
 
@@ -83,13 +89,8 @@ int ngx_event_connect_peer(ngx_peer_conn
         }
     }
 
-    peer = &pc->peers->peers[pc->cur_peer];
-
     /* ngx_unlock_mutex(pc->peers->mutex); */
 
-#if 0
-    pc->addr_port_text = peer->addr_port_text;
-#endif
 
     s = ngx_socket(AF_INET, SOCK_STREAM, IPPROTO_IP, 0);
 
@@ -263,6 +264,17 @@ ngx_log_debug(pc->log, "CONNECT: %s" _ p
 
 void ngx_event_connect_peer_failed(ngx_peer_connection_t *pc)
 {
+    time_t  now;
+
+    now = ngx_time();
+
+    /* ngx_lock_mutex(pc->peers->mutex); */
+
+    pc->peers->peers[pc->cur_peer].fails++;
+    pc->peers->peers[pc->cur_peer].accessed = now;
+
+    /* ngx_unlock_mutex(pc->peers->mutex); */
+
     pc->cur_peer++;
 
     if (pc->cur_peer >= pc->peers->number) {

--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -252,7 +252,7 @@ int ngx_event_pipe_read_upstream(ngx_eve
             if (n >= size) {
                 cl->hunk->last = cl->hunk->end;
 
-    /* STUB */ cl->hunk->num = p->num++;
+/* STUB */ cl->hunk->num = p->num++;
 
                 if (p->input_filter(p, cl->hunk) == NGX_ERROR) {
                     return NGX_ABORT;
@@ -271,15 +271,17 @@ int ngx_event_pipe_read_upstream(ngx_eve
     }
 
     if ((p->upstream_eof || p->upstream_error) && p->free_raw_hunks) {
-    /* STUB */ p->free_raw_hunks->hunk->num = p->num++;
+/* STUB */ p->free_raw_hunks->hunk->num = p->num++;
         if (p->input_filter(p, p->free_raw_hunks->hunk) == NGX_ERROR) {
             return NGX_ABORT;
         }
 
         p->free_raw_hunks = p->free_raw_hunks->next;
 
-        for (cl = p->free_raw_hunks; cl; cl = cl->next) {
-            ngx_pfree(p->pool, cl->hunk->start); 
+        if (p->free_bufs) {
+            for (cl = p->free_raw_hunks; cl; cl = cl->next) {
+                ngx_pfree(p->pool, cl->hunk->start); 
+            }
         }
     }
 
@@ -394,6 +396,7 @@ int ngx_event_pipe_write_to_downstream(n
 
         for (cl = p->free; cl; cl = cl->next) {
 
+            /* TODO: free hunk if p->free_bufs && upstream done */
             /* add the free shadow raw hunk to p->free_raw_hunks */
 
             if (cl->hunk->type & NGX_HUNK_LAST_SHADOW) {

--- a/src/event/ngx_event_pipe.h
+++ b/src/event/ngx_event_pipe.h
@@ -39,6 +39,7 @@ struct ngx_event_pipe_s {
     unsigned           read:1;
     unsigned           cachable:1;
     unsigned           single_buf:1;
+    unsigned           free_bufs:1;
     unsigned           upstream_done:1;
     unsigned           upstream_error:1;
     unsigned           upstream_eof:1;

--- a/src/http/modules/proxy/ngx_http_proxy_handler.c
+++ b/src/http/modules/proxy/ngx_http_proxy_handler.c
@@ -229,6 +229,7 @@ static int ngx_http_proxy_handler(ngx_ht
         r->request_body_handler = ngx_http_proxy_init_request;
         r->data = p;
 
+        /* TODO: we ignore return value of ngx_http_read_client_request_body */
         ngx_http_read_client_request_body(r, p->lcf->request_buffer_size);
 
         return NGX_DONE;
@@ -449,6 +450,87 @@ static void ngx_http_proxy_send_request_
 }
 
 
+#if 0
+
+static int ngx_http_proxy_connect(ngx_http_proxy_ctx_t *p)
+{
+    int                rc;
+    ngx_chain_t       *cl;
+    ngx_connection_t  *c;
+
+    for ( ;; ) {
+        p->action = "connecting to upstream";
+
+        rc = ngx_event_connect_peer(&p->upstream);
+
+        if (rc == NGX_ERROR) {
+            ngx_http_proxy_finalize_request(p, NGX_HTTP_INTERNAL_SERVER_ERROR);
+            return NGX_DONE;
+        }
+
+        if (rc == NGX_CONNECT_ERROR) {
+            ngx_event_connect_peer_failed(&p->upstream);
+
+#if 0
+            /* TODO: make separate func and call it from next_upstream */
+
+            if (!(state = ngx_push_array(p->states))) {
+                ngx_http_proxy_finalize_request(p,
+                                                NGX_HTTP_INTERNAL_SERVER_ERROR);
+                return NGX_DONE;
+            }
+
+            state->status = NGX_HTTP_BAD_GATEWAY;
+            state->peer =
+                 p->upstream.peers->peers[p->upstream.cur_peer].addr_port_text;
+
+#endif
+
+            if (p->upstream.tries == 0) {
+                ngx_http_proxy_finalize_request(p, NGX_HTTP_BAD_GATEWAY);
+                return NGX_DONE;
+            }
+
+            continue;
+        }
+
+        p->upstream.connection->data = p;
+        p->upstream.connection->write->event_handler =
+                                           ngx_http_proxy_send_request_handler;
+        p->upstream.connection->read->event_handler =
+                                   ngx_http_proxy_process_upstream_status_line;
+
+        c = p->upstream.connection;
+        c->pool = p->request->pool;
+        c->read->log = c->write->log = c->log = p->request->connection->log;
+
+        if (p->upstream.tries > 1 && p->request_sent) {
+
+            /* reinit the request chain */
+
+            for (cl = p->request->request_hunks; cl; cl = cl->next) {
+                cl->hunk->pos = cl->hunk->start;
+            }
+        }
+
+        p->request_sent = 0;
+        p->timedout = 0;
+
+        if (rc == NGX_OK) {
+            return ngx_http_proxy_send_request(p);
+        }
+
+        /* rc == NGX_AGAIN */
+
+        ngx_add_timer(c->write, p->lcf->connect_timeout);
+
+        return NGX_AGAIN;
+    }
+}
+
+#endif
+
+
 static void ngx_http_proxy_send_request(ngx_http_proxy_ctx_t *p)
 {
     int                      rc;
@@ -986,6 +1068,9 @@ static void ngx_http_proxy_send_response
         ep->single_buf = 1;
     }
 
+    /* TODO: ep->free_bufs = 0 if use ngx_create_chain_of_hunks() */
+    ep->free_bufs = 1;
+
     /*
      * event_pipe would do p->header_in->last += ep->preread_size
      * as though these bytes were read.