ESP32 AP max connections: 4 or 10? I am using the SoftAP feature of the ESP to create a central node, and connecting five or six clients in the final application. However, I don't know if i can connect that many clients.

One of the core files on GitHub, esp_wifi_types.h shows two conflicting lines:

#line 215, as a member of the 'wifi_ap_config_t' struct
uint8_t max_connection; /**&lt; Max number of stations allowed to connect in, default 4, max 4 */

#line 254
#define ESP_WIFI_MAX_CONN_NUM (10) /**&lt; max number of stations which can connect to ESP32 soft-AP */


So is it four or ten? Or something else? Any advice by somebody who's tried this would be appreciated.

esp_wifi_types.h on GitHub
The answer is as clear as any other EspressIf configuration data, it is 4 or maybe 5, or 8, or 12, 16 or even 20 (the same as a ESP8266!)

To clarify, it seems that around 2015 the maximum was 4 connections, but it is possible to recompile the SDK to support up to 16 connections.  There doesn't seem to be a #define of flag that will let a programmer control this.

These links may guide you to a proper solution:
https://github.com/esp8266/Arduino/issues/570
 or https://myesp8266.blogspot.com/2016/11/esp32-increase-maximum-number-of-sockets.html