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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. 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_OBJECT
public:
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_OBJECT
public:
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"
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