From 3fa145ef055689ca26697b2373c49a7ca84fb5d1 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Wed, 12 Apr 2023 09:39:43 +0000
Subject: [PATCH] 00_MQTT2_CLIENT.pm: nextOpenDelay Attribut (Forum #111959)

git-svn-id: https://svn.fhem.de/fhem/trunk@27435 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/00_MQTT2_CLIENT.pm | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/fhem/FHEM/00_MQTT2_CLIENT.pm b/fhem/FHEM/00_MQTT2_CLIENT.pm
index 34db5d6e6..c1c650845 100644
--- a/fhem/FHEM/00_MQTT2_CLIENT.pm
+++ b/fhem/FHEM/00_MQTT2_CLIENT.pm
@@ -54,6 +54,7 @@ MQTT2_CLIENT_Initialize($)
     msgAfterConnect
     msgBeforeDisconnect
     mqttVersion:3.1.1,3.1
+    nextOpenDelay
     privacy:0,1
     qosMaxQueueLength
     rawEvents
@@ -118,21 +119,21 @@ MQTT2_CLIENT_connect($;$)
     return;
   }
 
-  my $cfn = AttrVal($hash->{NAME}, "connectFn", undef); # for AWS-IOT / auth
+  my $cfn = AttrVal($me, "connectFn", undef); # for AWS-IOT / auth
   if($cfn) {
     if($calledFromConnectFn) {
       delete($hash->{inConnectFn});
     } else {
       return if($hash->{inConnectFn}); # called by readyFn
       $hash->{inConnectFn} = 1;
-      $cfn = EvalSpecials($cfn, ("%NAME" => $hash->{NAME}));
+      $cfn = EvalSpecials($cfn, ("%NAME" => $me));
       return AnalyzeCommand(undef, $cfn);
     }
   }
 
   my $disco = (DevIo_getState($hash) eq "disconnected");
   $hash->{connecting} = 1 if($disco && !$hash->{connecting});
-  $hash->{nextOpenDelay} = 10;
+  $hash->{nextOpenDelay} = AttrVal($me, "nextOpenDelay", 10);
   $hash->{BUF}="";
   if($hash->{DeviceName} =~ m/^wss?:/) {
     $hash->{binary} = 1;
@@ -985,6 +986,14 @@ MQTT2_CLIENT_feedTheList($$$;$)
       set the MQTT protocol version in the CONNECT header, default is 3.1
       </li></br>
 
+    <a id="MQTT2_CLIENT-attr-nextOpenDelay"></a>
+    <li>nextOpenDelay &lt;sec&gt;<br>
+      if the server is unavailable or after it terminates the connection,
+      MQTT2_CLIENT tries to reconnect every "nextOpenDelay" seconds. The
+      default is 10, but this is too short in some cases, especially if a
+      failed reconnect is problematic (see maxFailedConnects).
+      </li></br>
+
     <a id="MQTT2_CLIENT-attr-msgAfterConnect"></a>
     <li>msgAfterConnect [-r] topic message<br>
       publish the topic after each connect or reconnect.<br>