apply slightly revised patch for SO_KEEPALIVE (ITS#4708)

diff --git a/libraries/libldap/os-ip.c b/libraries/libldap/os-ip.c
index 9f85e800ac23a6bbf1a93a13f48098ec3f23a7d3..002300722e077b2094763dd20a6d305983acf436 100644 (file)
--- a/libraries/libldap/os-ip.c
+++ b/libraries/libldap/os-ip.c
@@ -123,20 +123,31 @@ ldap_pvt_close_socket(LDAP *ld, int s)
 static int
 ldap_int_prepare_socket(LDAP *ld, int s, int proto )
 {
-       osip_debug(ld, "ldap_prepare_socket: %d\n", s,0,0);
+       osip_debug( ld, "ldap_prepare_socket: %d\n", s, 0, 0 );
 
-#ifdef TCP_NODELAY
-       if( proto == LDAP_PROTO_TCP ) {
+#if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
+       if ( proto == LDAP_PROTO_TCP ) {
                int dummy = 1;
+#ifdef SO_KEEPALIVE
+               if ( setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
+                       (char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
+               {
+                       osip_debug( ld, "ldap_prepare_socket: "
+                               "setsockopt(%d, SO_KEEPALIVE) failed (ignored).\n",
+                               s, 0, 0 );
+               }
+#endif /* SO_KEEPALIVE */
+#ifdef TCP_NODELAY
                if ( setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
                        (char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
                {
-                       osip_debug(ld, "ldap_prepare_socket: "
+                       osip_debug( ld, "ldap_prepare_socket: "
                                "setsockopt(%d, TCP_NODELAY) failed (ignored).\n",
-                               s, 0, 0);
+                               s, 0, 0 );
                }
+#endif /* TCP_NODELAY */
        }
-#endif
+#endif /* SO_KEEPALIVE || TCP_NODELAY */
 
        return 0;
 }