mwifi_get_root_status() sometimes returns false even though root is connected

[will-emmerson]

Environment

• Development Kit: ESP32-DevKitC
• Kit version (for WroverKit/PicoKit/DevKitC): v4
• MDF version: c1cc50f
• Development Env: CLion
• Operating System: Fedora
• Power Supply: USB

Problem Description

I am running something based off the mqtt example.
I noticed that sometimes, after a few hours or days, a node would stop sending mqtt messages. This only happens to nodes > level 2, e.g. there is a node between them and root.
I am using the same code as the example here:

esp-mdf/examples/function_demo/mwifi/mqtt_example/main/mqtt_example.c

Line 165 in c1cc50f

if (!mwifi_is_connected() || !mwifi_get_root_status()) {

This blocks the mqtt sending task (node_write_task) if either node or root isn't connected.
It turned out the mqtt message wasn't being sent because mwifi_get_root_status() was returning false, even though mwifi_is_connected() is true. The root definitely is connected though because I can send mqtt messages to the node.

[zhanzhaocheng]

I haven't been able to reproduce for two days. I fixed a possible problem with mwifi_get_root_status(). I hope you can help verify if the problem has been fixed.

If the problem is not resolved, please provide your full log.

[will-emmerson]

Unfortunately the problem is still there. I updated MDF to 8dfc3c0 on Monday and it ran fine until a few minutes ago, when the same problem happened.
But I suspect it's something I've added to the example that is causing the problem. I'll run the vanilla mqtt example for a few days and see if it exhibits the same problem.