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tonyp7 / esp32-wifi-manager

Captive Portal for ESP32 that can connect to a saved wireless network or start an access point where you can connect to existing wifis.
MIT License
666 stars 219 forks source link

MQTT #6

Closed reshuler closed 4 years ago

reshuler commented 6 years ago

Hi,

Thanks again for a nice program.

I've run into an issue combining the wifi-manager with MQTT. If I use a the MQTT app (task) separately (stand alone) it is able to publish messages okay to a remote host. However, if I use MQTT app (task) with wifi-manager, the MQTT app is not able to connect to the remote host to publish messages. I've gone through the wifi-manager code, and tested different options. So far I've not found a solution to why the MQTT app will not work along aside the wifi-manager.

I have been able to use the wifi-manager to select an access point and store the access point credentials to NVM. Then on a reboot, I check to see if there are access points credential in the NVM, If there are, I used those credentials to attached to the access point and start the MQTT app. I don't start the wifi-manager up in this case. This configuration works okay.

Have you run see this issue? Do you have any recommendations on combining wifi-manager with MQTT?

Thanks, Robert

beaubrewer commented 6 years ago

Robert,

I suggest you try something that needs to resolve a hostname without using MQTT and see if that works. I have issues resolving DNS when the ESP32 is in AP or AP/ST mode.

This may not have anything to do with the wifi manager code and more to do with DNS resolution on the ESP32.

Just a thought.

On Mar 15, 2018 12:46 AM, "reshuler" notifications@github.com wrote:

Hi,

Thanks again for a nice program.

I've run into an issue combining the wifi-manager with MQTT. If I use a the MQTT app (task) separately (stand alone) it is able to publish messages okay to a remote host. However, if I use MQTT app (task) with wifi-manager, the MQTT app is not able to connect to the remote host to publish messages. I've gone through the wifi-manager code, and tested different options. So far I've not found a solution to why the MQTT app will not work along aside the wifi-manager.

I have been able to use the wifi-manager to select an access point and store the access point credentials to NVM. Then on a reboot, I check to see if there are access points credential in the NVM, If there are, I used those credentials to attached to the access point and start the MQTT app. I don't start the wifi-manager up in this case. This configuration works okay.

Have you run see this issue? Do you have any recommendations on combining wifi-manager with MQTT?

Thanks, Robert

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reshuler commented 6 years ago

Got it. Good suggestion. I’ll let you know what I’m able to do.

I seen issues around DNS before with the ESP32.

Thanks, Robert

tonyp7 commented 6 years ago

Hi Robert,

Could you care to share your code? I'm not sure I could see where the wifi manager could interact with MQTT!

Thanks

HoangNguyen689 commented 5 years ago

Any feedback about this problem ? I have a project and I got an error when implemting MQTT with wifi manager. It is E (21301) MQTT_CLIENT: Error transport connect

anupam19 commented 5 years ago

Hi @reshuler were able to resolve it ? Please let me know. I am also having same issue.

ojousima commented 5 years ago

I modified this project and ble2mqtt to be ESP-components and use them together to relay data to MQTT broker. You can check the code and submodules out here if you're interested, I've not had problems with MQTT.

anupam19 commented 5 years ago

Hi @ojousima I tried with your code but still mqtt fails with same error. I tried with different networks and also local mqtt broker I had tried but no luck