buglwIP - A Lightweight TCP/IP stack - Bugs: bug #58406, MQTT example wrong call order


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bug #58406: MQTT example wrong call order

Submitted by:  ahmedwahdan <ahmedwahdan>
Submitted on:  Wed 20 May 2020 01:17:06 AM UTC  
Category:  apps Severity:  3 - Normal
Item Group:  Crash Error Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Planned Release:  None
lwIP version:  2.1.1

Wed 20 May 2020 01:17:06 AM UTC, original submission:  

In MQTT example, calling "mqtt_client_connec" after "mqtt_set_inpub_callback" causes the callback to be null as the client is cleared in connect function.
  /* Wipe clean */
  memset(client, 0, sizeof(mqtt_client_t));

Also the callback is not checked before call in "mqtt_message_received" which causes a crash.

Thank you!

ahmedwahdan <ahmedwahdan>


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    Date Changed by Updated Field Previous Value => Replaced by
    2020-05-20 ahmedwahdan Carbon-Copy- => Added ahmedibrahimwahdan@gmail.com

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