From e20ef2ffbb3cbc2bf1166e852fae7a62a7d78795 Mon Sep 17 00:00:00 2001
From: "Adrian A. Baumann" <ade@adebaumann.com>
Date: Sun, 14 Jun 2026 22:19:41 +0200
Subject: [PATCH] MQTT works

---
 src/main.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index e81b731..ead50bd 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -206,14 +206,19 @@ static bool mqttConnect() {
     snprintf(clientId, sizeof(clientId), "m1730-%02x%02x%02x", mac[3], mac[4], mac[5]);
   }
 
+  char statusTopic[128];
+  snprintf(statusTopic, sizeof(statusTopic), "%s/status", mqttCfg.prefix);
+
   mqttClient.setServer(mqttCfg.host, mqttCfg.port);
   mqttClient.setCallback(mqttCallback);
 
   Serial.printf("[MQTT] connecting to %s:%d as %s\n", mqttCfg.host, mqttCfg.port, clientId);
-  bool ok = mqttClient.connect(clientId, mqttCfg.user, mqttCfg.pass);
+  bool ok = mqttClient.connect(clientId, mqttCfg.user, mqttCfg.pass,
+                               statusTopic, 0, true, "online: false");
 
   if (ok) {
     Serial.printf("[MQTT] connected to %s:%d\n", mqttCfg.host, mqttCfg.port);
+    mqttClient.publish(statusTopic, "online: true", true);
     mqttSubscribe();
   } else {
     Serial.printf("[MQTT] failed rc=%d\n", mqttClient.state());
@@ -444,8 +449,7 @@ static void handleConfig() {
   if (mqttClient.connected()) mqttClient.disconnect();
   mqttReconnectAt = 0;
 
-  server.sendHeader("Location", "/");
-  server.send(303);
+  handleRoot();
 }
 
 static void handleSet() {