From 1d4f406dbb2e017778a11c9fa4df2b499738a491 Mon Sep 17 00:00:00 2001
From: "Hansi, dl9rdz" <dl9rdz@darc.de>
Date: Sun, 3 Oct 2021 10:03:41 +0200
Subject: [PATCH] mqtt clientid done right

---
 RX_FSK/src/mqtt.cpp | 3 ++-
 RX_FSK/version.h    | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/RX_FSK/src/mqtt.cpp b/RX_FSK/src/mqtt.cpp
index 435fd9e..bd8d94c 100644
--- a/RX_FSK/src/mqtt.cpp
+++ b/RX_FSK/src/mqtt.cpp
@@ -16,6 +16,7 @@ void mqttCallback(char* topic, byte* payload, unsigned int length) {
   Serial.println();
 }
 
+static char buffer[21];
 void MQTT::init(const char* host, uint16_t port, const char* id, const char *username, const char *password, const char *prefix)
 {
     WiFi.hostByName(host, this->ip);
@@ -26,8 +27,8 @@ void MQTT::init(const char* host, uint16_t port, const char* id, const char *use
     
     Serial.println("[MQTT] pubsub client");
     mqttClient.setServer(ip, port);
-    char buffer[20];
     snprintf(buffer, 20, "%s%6ld", id, random(0, 1000));
+    buffer[20] = 0;
     mqttClient.setClientId(buffer);
     if (strlen(password) > 0) {
         mqttClient.setCredentials(username, password);
diff --git a/RX_FSK/version.h b/RX_FSK/version.h
index 3fb7c0a..90e2ecd 100644
--- a/RX_FSK/version.h
+++ b/RX_FSK/version.h
@@ -1,4 +1,4 @@
 const char *version_name = "rdzTTGOsonde";
-const char *version_id = "devel20211002";
+const char *version_id = "devel20211003";
 const int SPIFFS_MAJOR=2;
 const int SPIFFS_MINOR=16;