ESP32 Forum

Hello,

Hardware specification: ESP32 Dev kit (Wroom).
And using ESP-MDF.

Details:

1. In promiscuous mode, the data sniffed will have a structure of header and payload.
2. If you extract this payload, you will get the WiFi data frame. This in turn have a header and payload.
3. If you extract this payload, you will get the ESP-Mesh packet. This is basically your WIFI IEEE80211 PACKET-NETWORK DATA This will
also have a header and payload which is created by ESP-MDF.
4. Our interest is this ESP-MESH header which will have the initial source MAC and final destination MAC address
So once you are able to read WIFI IEEE80211 PACKET-NETWORK DATA it will contain the ESP-MESH header.

Question:

1. Is the above understanding is correct?
2. How to decode/extract payload(PACKET-NETWORK DATA) to readable format?

Thanks for the answers

Best,
Rajkumar

Hi,

Your understanding is correct to extract that information you can create your own struct by looking into 802.11 standard as per your desired frame.
Take a look at this one, this repo can help you:
https://github.com/skywa04885/esp32-pac ... eee80211.h

Hi prateekn9,

Thank you so much for the answer. We will try it out. Fingers crossed! And also some other solutions are welcomed.