esp8266, Arduino IDE: neuer Versuch: warum wird website sofort beendet?

HaWe · 22.10.2019, 13:03

Update:
ich habe den Code jtzt auf einem neuen ESP8266 selber getestet, und tatsächlich tritt es auch bei mir so auf wie bei dir (Firefox):
2.2.0: läuft, website:

Analog input 2

2.5.2: sofortiger Abbruch,

Fehler: Verbindung unterbrochen

Die Verbindung zum Server wurde zurückgesetzt, während die Seite geladen wurde.

Die Website könnte vorübergehend nicht erreichbar sein, versuchen Sie es bitte später nochmals.
Wenn Sie auch keine andere Website aufrufen können, überprüfen Sie bitte die Netzwerk-/Internetverbindung.
Wenn Ihr Computer oder Netzwerk von einer Firewall oder einem Proxy geschützt wird, stellen Sie bitte sicher, dass Firefox auf das Internet zugreifen darf.

ich habe jetzt hier einen issue eröffnet: https://github.com/esp8266/Arduino/issues/6661

**Moppi** · 22.10.2019, 13:13

nimm mal den Quelltext:

Code:

#include <ESP8266WiFi.h>
//#include <ESP8266WebServer.h>
//#include <FS.h> // muss vor <detail\RequestHandlersImpl.h> stehen
//#include <detail\RequestHandlersImpl.h>


String ssid = "...";
String password = "...";


//ESP8266WebServer webserver(80); // Webserver-Instanz f�r Port 80 erstellen
WiFiServer server(80);




void setup()
{
  Serial.begin(115200);
  Serial.println();


  Serial.println("Connecting to " + ssid);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid.c_str(), password.c_str());
  WiFi.config(IPAddress(xxx,xxx,xxx,xx), IPAddress(xxx,xxx,xxx,xxx), IPAddress(xxx,xxx,xxx,xxx), IPAddress(xxx,xxx,xxx,xxx));
  
  //WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print(".");
  }
  Serial.println(" connected");


  server.begin();
  Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
}




// prepare a web page to be send to a client (web browser)
String prepareHtmlPage()
{
  String htmlPage =
     String("HTTP/1.1 200 OK\r\n") +
            "Content-Length: 44\r\n"+
            "Content-Type: text/html\r\n" +
            "Connection: close\r\n" +  // the connection will be closed after completion of the response
            "Refresh: 5\r\n" +  // refresh the page automatically every 5 sec
            "\r\n" +
            "<!DOCTYPE html>" +
            "<html>" +
            "Analog input:  " + String(analogRead(A0)) +
            "</html>" +
            "\r\n";
  return htmlPage;
}


void loop()
{
  WiFiClient client = server.available();
  // wait for a client (web browser) to connect
  if (client)
  {
    Serial.println("\n[Client connected]");
    while (client.connected())
    {
      // read line by line what the client (web browser) is requesting
      if (client.available())
      {
        String line = client.readStringUntil('\r');


        Serial.print(line);
        // wait for end of client's request, that is marked with an empty line
        if (line.length() == 1 && line[0] == '\n')
        {
          client.println(prepareHtmlPage());
          delay(100); // give the web browser time to receive the data
          // close the connection:
          client.stop();
          Serial.println("[Client disonnected]");
          break;
        }
      }
    }
  }
}

HaWe · 22.10.2019, 13:23

ja, funktioniert jetzt mit 2.5.2 (habe WiFi.config() momentan auskommentiert)
was ist passiert?

**Moppi** · 22.10.2019, 14:32

weiter oben lesen: https://www.roboternetz.de/community...l=1#post655595

- - - Aktualisiert - - -

@hawe
habe Deinen ersten Quelltext, nach den neuen Erkenntnissen, nochmals modifiziert:

Code:

bool authorized=false;


void handleNotAuthorized() {
  String readString = "";
  char   strinput[MAXLEN], strupwd[TOKLEN], struname[TOKLEN] ;
  
  WiFiClient client = wifiserver.available();


  //---------------------------------------
  // debug
  // authorized=true;


  strcpy(strinput, "");
  strcpy(strupwd, "");
  strcpy(struname, "");


  while ( client.connected() ) {
    if (authorized) return;


    if ( client.available() ) {
      char c = client.read();


      //read char by request
      readString = "";
      while ( (readString.length() < TOKLEN) && (c != '\n') ) {
          readString += c;
          c = client.read();
      }


      readString.toCharArray(strinput, MAXLEN);
     // cstringarg(strinput, "uname", struname); // uname
     // cstringarg(strinput, "upwd", strupwd);  // upwd
 
      if(strstr(website_upwd,strupwd)!=NULL & strstr(website_uname,struname)!=NULL)
      {
        authorized = true;
        readString = "";
        return;           
        // return;  // <<< selbes Ergebnis, egal ob kommentiert oder auskommentiert
      }    
      
      //if HTTP request has ended
      if (c == '\n') {
         client.flush();


        //now output html data header


        String script="";
        script += ("<!DOCTYPE html> \n");
        script += ("<html> \n");
        
        script += ("<head> \n");


        // utf-8 für "°" Zeichen
        script +=  "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> \n" ;
        script +=  "<title>" ;        
        script +=  "</title> \n" ;
        script +=  "</head> \n" ;
        script +=  "<body> \n" ;
        
        script += ("<h2><p style=\"color:rgb(255,0,191);\"> log in to proceed: </p> </h2> \n");


        script += ("<FORM ACTION='/' method=GET > \n");
        script += ("<h2>user name:  <INPUT TYPE=text NAME='uname' VALUE=''  MAXLENGTH='50'> </h2> \n");
        script += ("<h2>password :  <INPUT TYPE=PASSWORD NAME='upwd' VALUE='' MAXLENGTH='50'> </h2> \n");


        script += ("<h2><INPUT TYPE=SUBMIT></h2> \n");


        script += ("</FORM> \n");
        script += ("<BR> \n");
        script += ("</body> \n");
        script += ("</html> \n");


        //----------------------------------


        String script1 = "";
        script1 += ("HTTP/1.1 200 OK \n");
        script1 += ("Content-Type: text/html \n");
        script1 += ("Content-Length: ") + script.length() + ("\n");
        script1 += ("\n");  //  do not forget this one //????


        script = script1+script;


        client.print(script);
        delay(100);


        //stopping client
        client.stop();
        //clearing string for next read
        //readString = "";
      }
    }
    delay(1);
  }
}

HaWe · 22.10.2019, 15:46

äh, sorry, vor
// close the connection:
client.stop();

der "echte" ungekürzte Code ist dieser hier:

Code:


void handleNotAuthorized() {
  String readString = "";
  char   strinput[MAXLEN], strupwd[TOKLEN], struname[TOKLEN] ;
  
  WiFiClient client = wifiserver.available();

  strcpy(strinput, "");
  strcpy(strupwd, "");
  strcpy(struname, "");


  while ( client.connected() ) {
    if (authorized) return;


    if ( client.available() ) {
      char c = client.read();


      //read char by request
      readString = "";
      while ( (readString.length() < TOKLEN) && (c != '\n') ) {
          readString += c;
          c = client.read();
      }
 
      if(strstr(website_upwd,strupwd)!=NULL & strstr(website_uname,struname)!=NULL)
      
      readString.toCharArray(strinput, MAXLEN);
      // cstringarg( char* haystack, char* vname, char* sarg )
      // haystack pattern: &varname=1234abc,  delimiters &, \n, \0, SPACE, EOF
      cstringarg(strinput, "uname", struname);  // uname
      cstringarg(strinput, "upwd", strupwd);   // upwd
      
      // debug
      Serial.print("strupwd     >>>"); Serial.print(strupwd); Serial.println("<<<");
      Serial.print("website_upwd>>>"); Serial.print(website_upwd); Serial.println("<<<");
      Serial.print("readString>>>");Serial.println(readString);

      if ( (strlen(strupwd)==strlen(website_upwd)) && (strcmp(website_upwd, strupwd)==0)
          && (strlen(struname)==strlen(website_uname)) && (strcmp(website_uname, struname)==0) 
         )         
      {
        authorized = true;
        readString = "";
        return;           
      }    
      
      //if HTTP request has ended
      if (c == '\n') {
         client.flush();

        //now output html data header
        String script="";
        script += ("<!DOCTYPE html> \n");
        script += ("<html> \n");
        
        script += ("<head> \n");

        // utf-8 für "°" Zeichen
        script +=  "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> \n" ;
        script +=  "<title>" ;        
        script +=  "</title> \n" ;
        script +=  "</head> \n" ;
        script +=  "<body> \n" ;
        
        script += ("<h2><p style=\"color:rgb(255,0,191);\"> log in to proceed: </p> </h2> \n");

        script += ("<FORM ACTION='/' method=GET > \n");
        script += ("<h2>user name:  <INPUT TYPE=text NAME='uname' VALUE=''  MAXLENGTH='50'> </h2> \n");
        script += ("<h2>password :  <INPUT TYPE=PASSWORD NAME='upwd' VALUE='' MAXLENGTH='50'> </h2> \n");

        script += ("<h2><INPUT TYPE=SUBMIT></h2> \n");

        script += ("</FORM> \n");
        script += ("<BR> \n");
        script += ("</body> \n");
        script += ("</html> \n");

        //----------------------------------

        String script1 = "";
        script1 += "HTTP/1.1 200 OK \n";
        script1 += "Content-Type: text/html \n";
        script1 += "Content-Length: " + (String)script.length() + "\n";
        script1 += "\n";  //  do not forget this one //????
  
        script = script1+script;

        client.print(script);
        delay(100);

        //stopping client        
        /*
        while(client.connected()) { 
          delay(10);    
        }   
        */      
        client.stop();
      }
    }
    delay(1);
  }
}

**Moppi** · 22.10.2019, 16:17

Warum so: (String)script.length()

bei mir funktionierte das auch ohne das "(String)"

???

PS: gib mal: "(String)" bei google ein, mit Gänsefüßchen oder ohne!