C++ (Qt)#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"