Test & request

[playmiel]

I just couldn't test the 8266.
I tested all the examples other, nocaptive is the only one that doesn't compile, static does not define ip, otherwise, the rest works pretty well. As you can see from the photo, the user feedback works well.

AdvancedCaptivePortal.log
NoCaptivePortal.log
NonBlockingCaptivePortal.log
WiFiStaticIP.log
BlockingCaptivePortal.log
LoadSaveConfig.log

I note that there is often this error [ 157][E][ESPmDNS.cpp:182] addService(): Failed adding service http.tcp.

[playmiel]

for the next version:

1. some examples need to be reviewed
2. correct this [ 157][E][ESPmDNS.cpp:182] addService(): Failed adding service http.tcp.
3. I found this: https://github.com/CDFER/Captive-Portal-ESP32
   which works well for android (I don't have an iphone to test)
   implementing this:

 //best way to set the IP address of the AP for android devices
  WiFi.softAPConfig(IPAddress(4, 3, 2, 1), IPAddress(4, 3, 2, 1), IPAddress(255, 255, 255, 0));

and this

server.on("/connecttest.txt", [](AsyncWebServerRequest *request) {
    return request->redirect("http://logout.net");
  }); // windows 11 captive portal workaround
  server.on("/wpad.dat", [](AsyncWebServerRequest *request) {

    return request->send(404);
  }); // Honestly don't understand what this is but a 404 stops win 10
      // keep calling this repeatedly and panicking the esp32 :)

  // Background responses: Probably not all are Required, but some are. Others
  // might speed things up? A Tier (commonly used by modern systems)
  server.on("/generate_204", [](AsyncWebServerRequest *request) {
    String ipAddress = WiFi.localIP().toString();
    return request->redirect(ipAddress.c_str());
  }); // android captive portal redirect
  server.on("/redirect", [](AsyncWebServerRequest *request) {
    String ipAddress = WiFi.localIP().toString();
    return request->redirect(ipAddress.c_str());
  }); // microsoft redirect
  server.on("/hotspot-detect.html",
            [](AsyncWebServerRequest *request) {
              String ipAddress = WiFi.localIP().toString();
              return request->redirect(ipAddress.c_str());
            }); // apple call home
  server.on("/canonical.html", [](AsyncWebServerRequest *request) {
    String ipAddress = WiFi.localIP().toString();
    return request->redirect(ipAddress.c_str());
  }); // firefox captive portal call home
  server.on("/success.txt", [](AsyncWebServerRequest *request) {
    return request->send(200);
  }); // firefox captive portal call home
  server.on("/ncsi.txt", [](AsyncWebServerRequest *request) {
    String ipAddress = WiFi.localIP().toString();
    return request->redirect(ipAddress.c_str());
  }); 
  server.on("/startpage",[](AsyncWebServerRequest
    *request){
      String ipAddress = WiFi.localIP().toString();
      request->redirect(ipAddress.c_str());});
     

and my android can see that it's a captive portal directly in the parameters, and it's even easier to configure.

[playmiel]

I'll add my functionality to test the network afterwards.

[mathieucarbou]

3. I found this: https://github.com/CDFER/Captive-Portal-ESP32

This is not a lib but a project demo-ing how to setup a CP. MycilaESPConnect does more than that ;-)

[mathieucarbou]

and my android can see that it's a captive portal directly in the parameters, and it's even easier to configure.

I agree, the new routes could be added to the lib. This would be a nice addition. I will add a note.

[playmiel]

3. I found this: https://github.com/CDFER/Captive-Portal-ESP32

This is not a lib but a project demo-ing how to setup a CP. MycilaESPConnect does more than that ;-)

yes I just wanted to quote it as I found some information in it

[mathieucarbou]

[ 157][E][ESPmDNS.cpp:182] addService(): Failed adding service http.tcp.

This is normal. This is Arduino saying the mDNS service is already added. ESP-IDF returns an ERROR if already added so Arduino logs an error. But there is no error behind, just a no-op.