+/* #endif LEGACY_LIBMODBUS */
+
+#else /* if !LEGACY_LIBMODBUS */
+/* Version 2.9.2 */
+static int mb_init_connection (mb_host_t *host) /* {{{ */
+{
+ int status;
+
+ if (host == NULL)
+ return (EINVAL);
+
+ if (host->connection != NULL)
+ return (0);
+
+ if ((host->port < 1) || (host->port > 65535))
+ host->port = MODBUS_TCP_DEFAULT_PORT;
+
+ DEBUG ("Modbus plugin: Trying to connect to \"%s\", port %i.",
+ host->node, host->port);
+
+ host->connection = modbus_new_tcp (host->node, host->port);
+ if (host->connection == NULL)
+ {
+ ERROR ("Modbus plugin: Creating new Modbus/TCP object failed.");
+ return (-1);
+ }
+
+ modbus_set_debug (host->connection, 1);
+
+ /* We'll do the error handling ourselves. */
+ modbus_set_error_recovery (host->connection, 0);
+
+ status = modbus_connect (host->connection);
+ if (status != 0)
+ {
+ ERROR ("Modbus plugin: modbus_connect (%s, %i) failed with status %i.",
+ host->node, host->port, status);
+ modbus_free (host->connection);
+ host->connection = NULL;
+ return (status);
+ }
+
+ return (0);
+} /* }}} int mb_init_connection */
+#endif /* !LEGACY_LIBMODBUS */