/****************************************************************************** $Id: qt/httpd.cpp   3.3.4   edited May 27 2003 $**** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.**** This file is part of an example program for Qt.  This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include <stdlib.h>#include <qsocket.h>#include <qregexp.h>#include <qserversocket.h>#include <qapplication.h>#include <qmainwindow.h>#include <qtextstream.h>#include <qvbox.h>#include <qlabel.h>#include <qtextview.h>#include <qpushbutton.h>// HttpDaemon is the the class that implements the simple HTTP server.class HttpDaemon : public QServerSocket{    Q_OBJECTpublic:    HttpDaemon( QObject* parent=0 ) :	QServerSocket(8080,1,parent)    {	if ( !ok() ) {	    qWarning("Failed to bind to port 8080");	    exit( 1 );	}    }    void newConnection( int socket )    {	// When a new client connects, the server constructs a QSocket and all	// communication with the client is done over this QSocket. QSocket	// works asynchronouslyl, this means that all the communication is done	// in the two slots readClient() and discardClient().	QSocket* s = new QSocket( this );	connect( s, SIGNAL(readyRead()), this, SLOT(readClient()) );	connect( s, SIGNAL(delayedCloseFinished()), this, SLOT(discardClient()) );	s->setSocket( socket );	emit newConnect();    }signals:    void newConnect();    void endConnect();    void wroteToClient();private slots:    void readClient()    {	// This slot is called when the client sent data to the server. The	// server looks if it was a get request and sends a very simple HTML	// document back.	QSocket* socket = (QSocket*)sender();	if ( socket->canReadLine() ) {	    QStringList tokens = QStringList::split( QRegExp("[ \r\n][ \r\n]*"), socket->readLine() );	    if ( tokens[0] == "GET" ) {		QTextStream os( socket );		os.setEncoding( QTextStream::UnicodeUTF8 );		os << "HTTP/1.0 200 Ok\r\n"		    "Content-Type: text/html; charset=\"utf-8\"\r\n"		    "\r\n"		    "<h1>Nothing to see here</h1>\n";		socket->close();		emit wroteToClient();	    }	}    }    void discardClient()    {	QSocket* socket = (QSocket*)sender();	delete socket;	emit endConnect();    }};// HttpInfo provides a simple graphical user interface to the server and shows// the actions of the server.class HttpInfo : public QVBox{    Q_OBJECTpublic:    HttpInfo()    {	HttpDaemon *httpd = new HttpDaemon( this );	QString itext = QString(		"This is a small httpd example.\n"		"You can connect with your\n"		"web browser to port %1"	    ).arg( httpd->port() );	QLabel *lb = new QLabel( itext, this );	lb->setAlignment( AlignHCenter );	infoText = new QTextView( this );	QPushButton *quit = new QPushButton( "quit" , this );	connect( httpd, SIGNAL(newConnect()), SLOT(newConnect()) );	connect( httpd, SIGNAL(endConnect()), SLOT(endConnect()) );	connect( httpd, SIGNAL(wroteToClient()), SLOT(wroteToClient()) );	connect( quit, SIGNAL(pressed()), qApp, SLOT(quit()) );    }    ~HttpInfo()    {    }private slots:    void newConnect()    {	infoText->append( "New connection" );    }    void endConnect()    {	infoText->append( "Connection closed\n\n" );    }    void wroteToClient()    {	infoText->append( "Wrote to client" );    }private:    QTextView *infoText;};int main( int argc, char** argv ){    QApplication app( argc, argv );    HttpInfo info;    app.setMainWidget( &info );    info.show();    return app.exec();}#include "httpd.moc"