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

**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!