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Re: [mosquitto-dev] Client receives PUBREC and MQTT disconnected

Connecting with cleansession=true solved the problem, but all offline messages are lost.

Why is the client receiving a PUBREC that it doesn't know how to handle? What is going wrong here?

Thanks
Khitai

On 2015/11/12 18:37, Ian Craggs wrote:
Have you tried connecting with cleansession=true to clean up the state for that client id?

Ian

On 11/12/2015 08:23 AM, Khitai Pang wrote:
Here's what happened:

_mosquitto_handle_pubrec handles the received PUBREC, then _mosquitto_message_out_update updates the message's out status, but in this function mosq->out_messages is NULL, so MOSQ_ERR_NOT_FOUND is returned, _mosquitto_loop_rc_handle handles the response code, since it's an error, finally _mosquitto_socket_close(mosq) is called.

Regards
Khitai

On 2015/11/12 15:08, Khitai Pang wrote:
Got rc=6 in the ondisconenct callback.

Regards
Khitai

On 2015/11/12 14:43, Khitai Pang wrote:
Hi,

I am having problem with a particular MQTT client ID. When a client connects to Mosquitto using this ID, it immediately receives a PUBREC from the broker and then MQTT get disconnected:

2015-11-10 20:35:21.827 mqtt-test[58102:737651] === MQTT connected===
2015-11-10 20:35:22.329 mqtt-test[58102:737651] mosquitto log : Client 362f23d0-8906-11e5-99da-005056355a83 received PUBREC (Mid: 58) 2015-11-10 20:35:22.454 mqtt-test[58102:737651] === MQTT disconnected===

Log on the broker side:

...
testhost mosquitto[4911]: New client connected from ... as 362f23d0-8906-11e5-99da-005056355a83 (c0, k120). testhost mosquitto[4911]: Socket error on client 362f23d0-8906-11e5-99da-005056355a83, disconnecting.
...

The broker is mosquitto 1.3.5. The client uses libmosquitto in mosquitto 1.4.4.

Any help is appreciated.


Regards,
Khitai
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