Re: [mosquitto-dev] (no subject)

["Mike Tran" <miketran@xxxxxxxxxx>]

Hi Johan,

Please check out section 3.1.2.10 of
the MQTT specification: http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc398718030

The important points are:
  "It is the responsibility of the Client to
ensure that the interval between Control Packets being sent does not exceed
the Keep Alive value. In the absence of sending any other Control Packets,
the Client MUST send a PINGREQ Packet "

 "If the
Keep Alive value is non-zero and the Server does not receive a Control
Packet from the Client within one and a half times the Keep Alive time
period, it MUST disconnect the Network Connection to the Client as if the
network had failed "

 "If a
Client does not receive a PINGRESP Packet within a reasonable amount of
time after it has sent a PINGREQ, it SHOULD close the Network Connection
to the Server. "


--
Regards,
Mike Tran




From:      
 Johan de Vries <devries@xxxxxxxxx>
To:      
 mosquitto-dev@xxxxxxxxxxx
Date:      
 07/13/2016 08:50 AM
Subject:    
   [mosquitto-dev]
(no subject)
Sent by:    
   mosquitto-dev-bounces@xxxxxxxxxxx

---

Hello,


Am I correct in thinking the maximum time for a connection
break to be noticed is 2.5 * keepalive? That is, if the connection breaks
right after a PINGRESP, it'll wait keepalive seconds to send out a new
PINGREQ, and it'll allow for the server keepalive * 1.5 seconds to send
its PINGRESP?


Sincerly,
 
Johan de Vries
 
Wivion bv
Vierlingsbeekseweg 52A | NL-5825 AX  Overloon
www.wivion.nl_______________________________________________
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