Example CaptivePortal from DNSServer.h

[RodrigoStefanini]

Related area

Esp32

Hardware specification

Esp32 wroom

Is your feature request related to a problem?

The example of CaptivePortal do not work for me, and i modify the code for be usefull.

Describe the solution you'd like

The proposal is to make the example functional, if this occurs for other users.

Describe alternatives you've considered

Change this:
"if (dnsServer.start()) {
Serial.println("Started DNS server in captive portal-mode");
} else {
Serial.println("Err: Can't start DNS server!");
}
"

Additional context

The code only work for me wen i put:

"dnsServer.start(53, "*", WiFi.softAPIP());"

I dont know if this is about some version, i used the 3.0.5 esp32 lib for arduino.

I have checked existing list of Feature requests and the Contribution Guide

• I confirm I have checked existing list of Feature requests and Contribution Guide.

[lbernstone]

Already fixed in #10366
Please include version in your issue description. It's there for a reason.

[N0edL]

Why doesnt it open the captive portal automaticly when connected on phone ?

[lbernstone]

@N0edL Many android phones are hard coded to use 8.8.8.8 as their DNS server. If you set the softAP to use that address, it can redirect those phones.

WiFi.softAPConfig(IPAddress(8,8,8,8), IPAddress(8,8,8,8), IPAddress(255,255,255,0));

[N0edL]

@lbernstone Ahh okay what about apple ?

[lbernstone]

Please don't hijack this issue, unless the exact same workaround works for you. Turn verbose logging on and open a new issue with the log.