diff -r 602d9968960f -r 5aa914eb644e thermferm/rdconfig.c
--- a/thermferm/rdconfig.c	Mon May 02 16:15:37 2016 +0200
+++ b/thermferm/rdconfig.c	Mon May 09 21:35:55 2016 +0200
@@ -65,10 +65,10 @@
     Config.temp_state = Config.hum_state = 1;	// missing
     Config.hum_value = 50000;
 #ifdef HAVE_MOSQUITTO_H
-    if (Config.mosq_host)
-	free(Config.mosq_host);
-    Config.mosq_host = NULL;
-    Config.mosq_port = 1883;
+    if (Config.mqtt_host)
+	free(Config.mqtt_host);
+    Config.mqtt_host = NULL;
+    Config.mqtt_port = 1883;
 #endif
  
     for (tmp2 = Config.units; tmp2; tmp2 = tmp2->next) {
@@ -244,6 +244,20 @@
 	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
 	return 1;
     }
+    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "NEXT_UNIT", "%d", Config.next_unit)) < 0) {
+	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
+	return 1;
+    }
+#ifdef HAVE_MOSQUITTO_H
+    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "MQTT_HOST", "%s", Config.mqtt_host)) < 0) {
+	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
+	return 1;
+    }
+    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "MQTT_PORT", "%d", Config.mqtt_port)) < 0) {
+	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
+	return 1;
+    }
+#endif
 
     /* 
      * Start an element named "LCDS" as child of THERMFERM.
@@ -320,6 +334,10 @@
 		syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
 		return 1;
 	    }
+	    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "ALIAS", "%s", tmp3->alias)) < 0) {
+		syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
+		return 1;
+	    }
 	    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "VOLUME", "%.1f", tmp3->volume)) < 0) {
 		syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
 		return 1;
@@ -1004,7 +1022,7 @@
 /*
  * Parse a fermenter unit
  */
-int parseUnit(xmlDocPtr doc, xmlNodePtr cur)
+int parseUnit(xmlDocPtr doc, xmlNodePtr cur, int number)
 {
     xmlChar     *key;
     int         i, ival;
@@ -1014,7 +1032,7 @@
     unit = (units_list *)malloc(sizeof(units_list));
     unit->next = NULL;
     unit->version = 1;
-    unit->uuid = unit->name = unit->air_address = unit->beer_address = unit->heater_address = \
+    unit->uuid = unit->name = unit->alias = unit->air_address = unit->beer_address = unit->heater_address = \
 		 unit->cooler_address = unit->fan_address = unit->door_address = \
 		 unit->light_address = unit->psu_address = unit->profile = NULL;
     unit->volume = unit->prof_peak_abs = unit->prof_peak_rel = 0.0;
@@ -1052,6 +1070,9 @@
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"NAME"))) {
 	    unit->name = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
 	}
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"ALIAS"))) {
+	    unit->alias = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	}
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"VOLUME"))) {
 	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
 	    if (sscanf((const char *)key, "%f", &val) == 1)
@@ -1392,6 +1413,15 @@
 	cur = cur->next;
     }
 
+    /*
+     * If there is no alias name, create it.
+     */
+    if (unit->alias == NULL) {
+	char	an[128];
+	sprintf(an, "unit%d", number);
+	unit->alias = xstrcpy(an);
+    }
+
     if (Config.units == NULL) {
 	Config.units = unit;
     } else {
@@ -1413,7 +1443,8 @@
     cur = cur->xmlChildrenNode;
     while (cur != NULL) {
         if ((!xmlStrcmp(cur->name, (const xmlChar *)"UNIT"))) {
-            parseUnit(doc, cur);
+            parseUnit(doc, cur, Config.next_unit);
+	    Config.next_unit++;
         }
         cur = cur->next;
     }
@@ -1983,9 +2014,10 @@
     syslog(LOG_NOTICE, "rdconfig: using %s", mypath);
 
 #ifdef HAVE_MOSQUITTO_H
-    Config.mosq_host = xstrcpy((char *)"localhost");
-    Config.mosq_port = 1883;
+    Config.mqtt_host = xstrcpy((char *)"localhost");
+    Config.mqtt_port = 1883;
 #endif
+    Config.next_unit = 1;
 
     if ((cur = xmlDocGetRootElement(doc)) == NULL) {
 	syslog(LOG_NOTICE, "XML file %s empty.", mypath);
@@ -2032,6 +2064,23 @@
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"HUM_ADDRESS"))) {
 	    Config.hum_address = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
 	}
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"NEXT_UNIT"))) {
+	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	    if (sscanf((const char *)key, "%d", &ival) == 1)
+		Config.next_unit = ival;
+	    xmlFree(key);
+	}
+#ifdef HAVE_MOSQUITTO_H
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"MQTT_HOST"))) {
+	    Config.mqtt_host = (char *)xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	}
+	if ((!xmlStrcmp(cur->name, (const xmlChar *)"MQTT_PORT"))) {
+	    key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
+	    if (sscanf((const char *)key, "%d", &ival) == 1)
+		Config.mqtt_port = ival;
+	    xmlFree(key);
+	}
+#endif
 	if ((!xmlStrcmp(cur->name, (const xmlChar *)"LCDS"))) {
 	    parseLCDs(doc, cur);
 	}