ESP8266 Community Forum

Hello, I am doing a project in which I need to count the connected WiFi clients, not the ones with TCP. That is why I need to somehow have the number of clients connected to WiFi. Also I need to ban a client to connect if there is a number of clients already connected. Do someone knows how to achieve that actions? Thank you in advance!!!

The SDK has the following function which sounds like it'll give you the count of connected APs:



Alternatively you could register a callback and get notified every time a station connects and disconnects using:



The SDK has a good example of using this latter function, and how to retrieve info about the station when it connects/disconnects.

I can't see an obvious way to ban a client from connecting if you've hit a max number. You could disable the DHCP server when a max has been reached - but this would also prevent existing stations from renewing their leases.

Edit: maximum number of stations is configurable in softap_config (max_connection). So use:

Hello thank you very much for your help, the things you gave me do exactly what I wanted to do.

However, I have some questions about all of them:

1) the wifi_softap_get_station_num() displays the number of devices connected, but sometimes when I disconnect the device the ESP counts it still as connected and after plenty of minutes(around 10) stops counting it. How this can be fixed?

2) for the restriction of max_connections, I changed the parameter in my library to 1:

However, it still does not work because I can connect from 2 devices. What am I doing wrong?

3) for the event listener can you give me an example how to use it because in the SDK in Github I did not find any

Thank you very much for your help!!!

Personally, I faced such issue with wifi_softap_get_station_num(), I don't think it is reliable.
So, instead, I've use to count it myself using wifi_softap_get_station_info(); enumeration.