I am building a app that contacts the server for data, gets it and then does some processing before displaying the result.

I have created a mapping function that maps all the functions that need to be called if a particular request has to be successful.

This code is the main part where all the calling is done.

Qt Code: 
  1. if (check_if_clientID_is_present())
  2.          call = "teci.create.client";
  3.      qDebug() << "call"<< call;
  4.  
  5.      if(!call.isEmpty() && API_Request_Pointer == false)
  6.          mapping(call);
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This is the mapping code where the required functions are called.
First i prepare the xml document, call the fetch function, then wait for the readyread and requestfinished signals, then call the parsing function and then exit the mapping function

Qt Code: 
  1. void MainWindow::mapping(QString callname)
  2.  {
  3.      qDebug() <<"in mapping";
  4.      QThread thread;
  5.      if(call.compare("teci.create.client",callname)== 0)
  6.      {
  7.          qDebug() <<"inside create client";
  8.          API_Request_Pointer = true;
  9.          create_client();
  10.          fetch();
  11.          connect(&http, SIGNAL(readyRead(const QHttpResponseHeader &)),
  12.               this, SLOT(readData(const QHttpResponseHeader &)));
  13.  
  14.          connect(&http, SIGNAL(requestFinished(int, bool)),
  15.               this, SLOT(finished(int, bool)));
  16.          parse_create_client();
  17.          API_Request_Pointer = false;
  18.          qDebug() <<"leaving create client";
  19.      }
  20.      else if (call.compare("teci.test.reverse",callname)== 0)
  21.      {
  22.         API_Request_Pointer = true;
  23.         reverse_string();
  24.         fetch();
  25.         connect(&http, SIGNAL(readyRead(const QHttpResponseHeader &)),
  26.               this, SLOT(readData(const QHttpResponseHeader &)));
  27.  
  28.         connect(&http, SIGNAL(requestFinished(int, bool)),
  29.               this, SLOT(finished(int, bool)));
  30.         parse_reverse_string();
  31.         API_Request_Pointer = false;
  32.      }
  33.      qDebug() <<"leaving mapping";
  34.  
  35.  }
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Qt Code: 
  1. void MainWindow::fetch()
  2.  {
  3.  
  4.      xml.clear();
  5.  
  6.      QByteArray string ("username");
  7.      string.append(":");
  8.      string.append("12345");
  9.      QString encoded = string.toBase64();
  10.      qDebug() <<"String"<< string <<"Encoded" <<encoded ;
  11.  
  12.      QUrl url("http://..../");
  13.      url.setUserName("username");
  14.      url.setPassword("12345");
  15.  
  16.      QHttpRequestHeader header("POST","/api/");
  17.      header.setValue("Host",url.host());
  18.      header.setValue("Path",url.path());
  19.      header.setValue("Authorization","Basic " + encoded);
  20.  
  21.      http.setHost(url.host(),url.port(80));
  22.  
  23.      connectionId = http.request(header,xmlrequest);
  24.      qDebug() << "Leaving fetch";
  25.  }
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Qt Code: 
  1. void MainWindow::create_client()
  2.  {
  3.         here i add tags and create the xml 
  4.  
  5.         xmlrequest.append(doc.toString());
  6.         qDebug() << xmlrequest.data();
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Qt Code: 
  1. void MainWindow::readData(const QHttpResponseHeader &resp)
  2.  {
  3.  
  4.  
  5.      if (resp.statusCode() != 200)
  6.          http.abort();
  7.      else
  8.      {
  9.          xml.addData(http.readAll());
  10.      }
  11.       qDebug() << "Leaving readdata";
  12.  }
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Qt Code: 
  1. void MainWindow::finished(int id, bool error)
  2.  {
  3.      qDebug() <<"Error" <<http.errorString();
  4.      if (error) 
  5.          qWarning("Received error during HTTP fetch.");
  6.  
  7.            qDebug() << "Leaving finished";
  8.  }
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Qt Code: 
  1. void MainWindow::parse_create_client()
  2.  {
  3.     qDebug() <<"Entering parser";
  4.      while (!xml.atEnd())
  5.      {
  6.          xml.readNext();
  7.          qDebug()<<xml.readNext();
  8.          if (xml.isStartElement())
  9.          {
  10.              currentTag = xml.name().toString();
  11.  
  12.              if (currentTag == "client")
  13.                  API_key += xml.attributes().value("key").toString();
  14.              qDebug() << "CurrentTag"<<currentTag;
  15.  
  16.          }
  17.  
  18.          else if (xml.isCharacters() && !xml.isWhitespace())
  19.          {
  20.  
  21.              if (currentTag == "password")
  22.                  API_password += xml.text().toString();
  23.          }
  24.      }
  25.  
  26.     qDebug() << "webiste_clientID"<< API_key;
  27.     qDebug() << "webiste_serial no"<<API_password;
  28.  
  29.       }
  30.  }
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After reading the data, i write it down in a file.

This is the output i am getting.

Qt Code: 
  1. Getting data from the webiste 
  2. call "teci.create.client" 
  3. in mapping 
  4. inside create client 
  5. <request version="0.1" >
  6.  <call name="teci.client.create" >
  7.   <client>
  8.    <kind>MOBILE</kind>
  9.    <name>API Test suite 7001</name>
  10.   </client>
  11.  </call>
  12. </request>
  13.  
  14. Leaving fetch 
  15. Entering parser 
  16. 1 
  17. webiste_clientID "" 
  18. webiste_serial no "" 
  19. leaving create client 
  20. leaving mapping 
  21. Leaving finished 
  22. Leaving readdata
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the readyread and requestfinished signals are being called after the parsing function has been called.

How can i wait for the signal and then call the parsing function??