get only Request redirected to captive portal

[GvLente]

Basic Infos

Hardware

WiFimanager Branch/Release:

• Master
• Development

Esp8266/Esp32:

• ESP8266
• ESP32

Hardware: ESP-12e, esp01, esp25

• ESP01
• ESP12 E/F/S (nodemcu, wemos, feather)
• Other

ESP Core Version: 2.4.0, staging

• 2.3.0
• 2.4.0
• staging (master/dev)

Description

Problem description

I get only Request redirected to captive portal serveral times after connection and more when i refresh the blanc html page

File Not Found
URI: /
Method: GET
Arguments : 0

Settings in IDE

Module: NodeMcu, Wemos D1 R2

17:09:17.123 -> *WM:
17:09:17.157 -> *WM: AutoConnect
17:09:17.157 -> *WM: Connecting as wifi client...
17:09:17.157 -> *WM: Using last saved values, should be faster
17:09:17.157 -> *WM: Connection result:
17:09:17.157 -> *WM: 0
17:09:17.157 -> *WM:
17:09:17.157 -> *WM: Configuring access point...
17:09:17.157 -> *WM: ESP8266
17:09:17.157 -> *WM: password
17:09:17.638 -> *WM: AP IP address:
17:09:17.638 -> *WM: 192.168.4.1
17:09:17.638 -> *WM: HTTP server started
17:09:23.432 -> *WM: Request redirected to captive portal
17:09:23.500 -> *WM: Request redirected to captive portal
17:09:29.368 -> *WM: Request redirected to captive portal
17:09:30.461 -> *WM: Request redirected to captive portal
etc.
etc. each time when i refresh

using Sketch: ESP8266_LED_Control_06_Station_Mode_with_mDNS_and_wifiManager

I dont get the wifimanager main page only get in android and apple a emty page with

File Not Found
URI: /
Method: GET
Arguments : 0

using Sketch: ESP8266_LED_Control_06_Station_Mode_with_mDNS_and_wifiManager

/*

• Sketch: ESP8266_LED_Control_06_Station_Mode_with_mDNS_and_wifiManager
• Control an LED from a web browser
• Intended to be run on an ESP8266
  */

#include <ESP8266WiFi.h>
//#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>

#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>

// change these values to match your network
//char ssid[] = "MyNetwork_SSID"; // your network SSID (name)
//char pass[] = "Newtwork_Password"; // your network password

WiFiServer server(80);

String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
String html_1 = "<style>body {font-size:140%;} #main {display: table; margin: auto; padding: 0 10px 0 10px; } h2,{text-align:center; } .button { padding:10px 10px 10px 10px; width:100%; background-color: #4CAF50; font-size: 120%;}</style><title>LED Control</title>

LED Control

";
String html_2 = "";
String html_4 = "

";

String request = "";
int LED_Pin = D1;

void setup()
{
pinMode(LED_Pin, OUTPUT);

  Serial.begin(115200);
  delay(500);
  Serial.println(F("Serial started at 115200"));
  Serial.println();

  // We start by connecting to a WiFi network
  //Serial.print(F("Connecting to "));  Serial.println(ssid);
  //WiFi.begin(ssid, pass);

  //while (WiFi.status() != WL_CONNECTED) 
  //{
  //    Serial.print(".");    delay(500);
  //}
  //Serial.println("");
  //Serial.println(F("[CONNECTED]"));
  //Serial.print("[IP ");              
  //Serial.print(WiFi.localIP()); 
  //Serial.println("]");

 // WiFiManager
  WiFiManager wifiManager;
  wifiManager.autoConnect("ESP8266","password");


  // or use this for auto generated name ESP + ChipID
  //wifiManager.autoConnect();

  // if you get here you have connected to the WiFi
  Serial.println("Connected.");


  if (!MDNS.begin("esp8266"))   {  Serial.println("Error setting up MDNS responder!");  }
  else                          {  Serial.println("mDNS responder started");  }

  // start a server
  server.begin();
  Serial.println("Server started");

} // void setup()

void loop()
{

// Check if a client has connected
WiFiClient client = server.available();
//if (!client)  {  return;  }

if (client)
{
      // Read the first line of the request
      request = client.readStringUntil('\r');

      Serial.println("request:");
      Serial.println(request);

      if       ( request.indexOf("LEDON") > 0 )  { digitalWrite(LED_Pin, HIGH);  }
      else if  ( request.indexOf("LEDOFF") > 0 ) { digitalWrite(LED_Pin, LOW);   }


      // Get the LED pin status and create the LED status message
      if (digitalRead(LED_Pin) == HIGH) 
      {
          // the LED is on so the button needs to say turn it off
         html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>";
      }
      else                              
      {
          // the LED is off so the button needs to say turn it on
          html_2 = "<form id='F1' action='LEDON'><input class='button' type='submit' value='Turn on the LED' ></form><br>";
      }


      client.flush();

      client.print( header );
      client.print( html_1 );    
      client.print( html_2 );
      client.print( html_4);

      delay(5);

     // The client will actually be disconnected when the function returns and 'client' object is detroyed

}

} // void loop()

[GvLente]

sorry i am not familiar with github

[GvLente]

AutoConnectWithTimeout.ino

gives in serial:
20:08:22.105 -> *WM: AutoConnect
20:08:22.105 -> *WM: Connecting as wifi client...
20:08:22.105 -> *WM: Using last saved values, should be faster
20:08:22.105 -> *WM: Connection result:
20:08:22.105 -> *WM: 0
20:08:22.105 -> *WM:
20:08:22.105 -> *WM: Configuring access point...
20:08:22.105 -> *WM: AutoConnectAP
20:08:22.615 -> *WM: AP IP address:
20:08:22.615 -> *WM: 192.168.4.1
20:08:22.615 -> *WM: HTTP server started
20:08:34.265 -> *WM: Request redirected to captive portal
20:08:46.222 -> *WM: Request redirected to captive portal
20:08:47.343 -> *WM: Request redirected to captive portal
20:08:47.411 -> *WM: Request redirected to captive portal

in the browser a blanc page

a refresh gives only more *WM: Request redirected to captive portal

[tablatronix]

might be a bug that was fixed in development branch already, not sure

[GvLente]

ok, I tryd development 0.14 there was the same result

[dontsovcmc]

It's better to use Wireshark to sniff requests..

I got same infinitive *WM: Request redirected to captive portal when connected to ESP by MacOS with running virtual Windows7. When I turn off Windows7 (Parallels), ESP web server works great. It means there are some unknown requests, that DDOS ESP server.

[tablatronix]

.14 is not development branch

[tablatronix]

It is more likely that the host is ignoring the dns responses, but yeah you need to wireshark this to figure it out for sure.

[GvLente]

Which is the development branch?
I will whireshark and see whats going wrong thanks voor the lead and the good work