Incoming data and the end of the pipe is not appended to the textarea and I don't see any mistake in the code. Could you give me a hand please ?

Qt Code: 
  1. //******************** The declaration file
  2. #ifndef IRC_CONNECTION_H_
  3. # define IRC_CONNECTION_H_
  4. # include <QTcpSocket>
  5. class QTcpSocket;
  6.  
  7. class QBuffer;
  8.  
  9. class IrcConnection : public QTcpSocket {
  10.     Q_OBJECT
  11.  
  12. public:
  13.     IrcConnection(QTcpSocket *parent = 0);
  14.     ~IrcConnection();
  15. signals:
  16.     void incomingIrcMessage(QString &);
  17. private slots:
  18.     void receiveMessage();
  19.     void ircRegister();
  20. private:
  21.     QBuffer *buffer;
  22. };
  23.  
  24. #endif //IRC_CONNECTION_H_
  25.  
  26. //******************** The implementation file
  27.  
  28. #include "IrcConnection.h"
  29. #include <QBuffer>
  30. #include <QTcpSocket>
  31. #include <QString>
  32. #include <QObject>
  33.  
  34. IrcConnection::IrcConnection(QTcpSocket *parent) : QTcpSocket(parent) {
  35.     buffer = new QBuffer(this);
  36.     QObject::connect(this,SIGNAL(readyRead()),this,SLOT(receiveMessage()));
  37.     QObject::connect(this,SIGNAL(connected()),this,SLOT(ircRegister()));
  38. }
  39.  
  40. IrcConnection::~IrcConnection() {
  41.     //TODO cleanup
  42. }
  43. void IrcConnection::receiveMessage() {
  44.     qint64 bytes = buffer->write(readAll());
  45.     buffer->seek(buffer->pos() - bytes);
  46.     while(buffer->canReadLine()) {
  47.         QString line = buffer->readLine();
  48.         emit incomingIrcMessage(line);
  49.     }
  50. }
  51. void IrcConnection::ircRegister() {
  52.     write("NICK kdsjghsdkjghsdkjgnUSER "anonymous.com" "irc.undernet.org" :http://localhostn");
  53. }
  54.  
  55. //******************** main.cpp
  56. #include <QApplication>
  57. #include <QVBoxLayout>
  58. #include <QTextEdit>
  59. #include <QtGlobal>
  60. #include "IrcConnection.h"
  61.  
  62. int main(int argc, char *argv[]) {
  63.     QApplication app(argc,argv);
  64.     QVBoxLayout *vbox = new QVBoxLayout;
  65.     QTextEdit *textarea = new QTextEdit;
  66.     vbox->addWidget(textarea);
  67.     textarea->setReadOnly(true);
  68.  
  69.     IrcConnection *irc = new IrcConnection;
  70.  
  71.     QObject::connect(irc,SIGNAL(incomingIrcMessage(QString &)),textarea,SLOT(append(QString &)));
  72.     QString host("irc.freenode.org");
  73.     qint16 port = 6667;
  74.     textarea->append("Connecting...n");
  75.     qDebug("Connecting...");
  76.     irc->connectToHost(host,port);
  77.     textarea->show();
  78.     return app.exec();
  79. }
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