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diff src/event/ngx_event_connect.c @ 7371:8b68d50090e4

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Upstream: proxy_socket_keepalive and friends. The directives enable the use of the SO_KEEPALIVE option on upstream connections. By default, the value is left unchanged.
author Vladimir Homutov <vl@nginx.com>
date Wed, 03 Oct 2018 14:08:51 +0300
parents 91ea68dd1501
children fdc3d40979b0
line wrap: on
line diff
--- a/src/event/ngx_event_connect.c
+++ b/src/event/ngx_event_connect.c
@@ -20,7 +20,7 @@ static ngx_int_t ngx_event_connect_set_t
 ngx_int_t
 ngx_event_connect_peer(ngx_peer_connection_t *pc)
 {
-    int                rc, type;
+    int                rc, type, value;
 #if (NGX_HAVE_IP_BIND_ADDRESS_NO_PORT || NGX_LINUX)
     in_port_t          port;
 #endif
@@ -73,6 +73,18 @@ ngx_event_connect_peer(ngx_peer_connecti
         }
     }
 
+    if (pc->so_keepalive) {
+        value = 1;
+
+        if (setsockopt(s, SOL_SOCKET, SO_KEEPALIVE,
+                       (const void *) &value, sizeof(int))
+            == -1)
+        {
+            ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
+                          "setsockopt(SO_KEEPALIVE) failed, ignored");
+        }
+    }
+
     if (ngx_nonblocking(s) == -1) {
         ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno,
                       ngx_nonblocking_n " failed");