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[lwip-devel] [bug #58406] MQTT example wrong call order
From: |
ahmedwahdan |
Subject: |
[lwip-devel] [bug #58406] MQTT example wrong call order |
Date: |
Tue, 19 May 2020 21:17:08 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36 |
URL:
<https://savannah.nongnu.org/bugs/?58406>
Summary: MQTT example wrong call order
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: 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
Discussion Lock: Any
Planned Release: None
lwIP version: 2.1.1
_______________________________________________________
Details:
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!
_______________________________________________________
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<https://savannah.nongnu.org/bugs/?58406>
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