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Negative number of inactive clients #287

lovisajohansson opened this Issue Oct 13, 2016 · 2 comments


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lovisajohansson commented Oct 13, 2016


I have an issue where I'm seeing negative numbers of inactive/disconnected clients. Any ideas about how that can happen?

$SYS/broker/clients/total  :  5
$SYS/broker/clients/inactive  : -2
$SYS/broker/clients/active  :  7

Mosquitto version 1.4.10


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PierreF commented Jan 2, 2018

This happen when a (TCP) connection is established and before the MQTT connection occurred.
The easiest way to reproduce this is to open a plain TCP connection with telnet:

telnet localhost 1883

For each telnet session, the number of inactive clients will goes down by 1.

@ralight ralight added this to the 1.5.4 milestone Sep 26, 2018

ralight added a commit that referenced this issue Nov 7, 2018


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ralight commented Nov 7, 2018

This is now fixed, an embarrassingly long time later. Thanks very much for your report.

@ralight ralight closed this Nov 7, 2018

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