+#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 );
+ }
+ if ( ld->ld_options.ldo_keepalive_idle > 0 )
+ {
+#ifdef TCP_KEEPIDLE
+ if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPIDLE,
+ (void*) &ld->ld_options.ldo_keepalive_idle,
+ sizeof(ld->ld_options.ldo_keepalive_idle) ) == AC_SOCKET_ERROR )
+ {
+ osip_debug( ld, "ldap_prepare_socket: "
+ "setsockopt(%d, TCP_KEEPIDLE) failed (ignored).\n",
+ s, 0, 0 );
+ }
+#else
+ osip_debug( ld, "ldap_prepare_socket: "
+ "sockopt TCP_KEEPIDLE not supported on this system.\n",
+ 0, 0, 0 );
+#endif /* TCP_KEEPIDLE */
+ }
+ if ( ld->ld_options.ldo_keepalive_probes > 0 )
+ {
+#ifdef TCP_KEEPCNT
+ if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPCNT,
+ (void*) &ld->ld_options.ldo_keepalive_probes,
+ sizeof(ld->ld_options.ldo_keepalive_probes) ) == AC_SOCKET_ERROR )
+ {
+ osip_debug( ld, "ldap_prepare_socket: "
+ "setsockopt(%d, TCP_KEEPCNT) failed (ignored).\n",
+ s, 0, 0 );
+ }
+#else
+ osip_debug( ld, "ldap_prepare_socket: "
+ "sockopt TCP_KEEPCNT not supported on this system.\n",
+ 0, 0, 0 );
+#endif /* TCP_KEEPCNT */
+ }
+ if ( ld->ld_options.ldo_keepalive_interval > 0 )
+ {
+#ifdef TCP_KEEPINTVL
+ if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPINTVL,
+ (void*) &ld->ld_options.ldo_keepalive_interval,
+ sizeof(ld->ld_options.ldo_keepalive_interval) ) == AC_SOCKET_ERROR )
+ {
+ osip_debug( ld, "ldap_prepare_socket: "
+ "setsockopt(%d, TCP_KEEPINTVL) failed (ignored).\n",
+ s, 0, 0 );
+ }
+#else
+ osip_debug( ld, "ldap_prepare_socket: "
+ "sockopt TCP_KEEPINTVL not supported on this system.\n",
+ 0, 0, 0 );
+#endif /* TCP_KEEPINTVL */
+ }
+#endif /* SO_KEEPALIVE */
+#ifdef TCP_NODELAY