Hi,

I want to write a high performance http server. The attached code is what I came up with so far.
Benchmarking showed that it serves just a little more than an apache http server - while apache does a lot more.

Any suggestions on how I could improve this?

thanks,
Niko

Qt Code: 
  1. #include <QCoreApplication>
  2. #include <QTcpServer>
  3. #include <QThreadPool>
  4. #include <QDateTime>
  5. #include <QTcpSocket>
  6. #include <QStringList>
  7.  
  8. class Request : public QRunnable
  9. {
  10. public:
  11.     Request (int socketDescriptor)
  12.     : m_socketDescriptor(socketDescriptor)
  13.     {}
  14.  
  15.     virtual void run()
  16.     {
  17.         QTcpSocket socket;
  18.         socket.setSocketDescriptor(m_socketDescriptor);
  19.         socket.waitForReadyRead();
  20.         QStringList tokens = QString(socket.readLine()).split(QRegExp("[ \r\n][ \r\n]*"));
  21.         if (tokens[0] == "GET") {
  22.             QTextStream os(&socket);
  23.             os.setAutoDetectUnicode(true);
  24.             os << "HTTP/1.0 200 Ok\r\n"
  25.                 "Content-Type: text/html; charset=\"utf-8\"\r\n"
  26.                 "\r\n"
  27.                 "<h1>Nothing to see here</h1>\n"
  28.                 << QDateTime::currentDateTime().toString() << "\n";
  29.             socket.close();
  30.             socket.waitForDisconnected();
  31.         }
  32.     }
  33.  
  34. private:
  35.     int m_socketDescriptor;
  36. };
  37.  
  38. class HttpDaemon : public QTcpServer
  39. {
  40. public:
  41.     HttpDaemon(quint16 port, QObject* parent = 0)
  42.         : QTcpServer(parent)
  43.     {
  44.         if (!listen(QHostAddress::Any, port)) {
  45.             qFatal(errorString().toAscii());
  46.         }
  47.         QThreadPool::globalInstance()->setMaxThreadCount(10);
  48.     }
  49.  
  50. private:
  51.     void incomingConnection(int socket)
  52.     {
  53.         Request *r = new Request(socket);
  54.         QThreadPool::globalInstance()->start(r);
  55.     }
  56. };
  57.  
  58. int main(int argc, char** argv)
  59. {
  60.     QCoreApplication app(argc, argv);
  61.     HttpDaemon daemon(8080);
  62.     return app.exec();
  63. }
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