You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
196 lines
7.8 KiB
196 lines
7.8 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/network/httpd/httpd.doc:5 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>A simple HTTP daemon</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A simple HTTP daemon</h1>
|
|
|
|
|
|
<p>
|
|
<p> This example shows how to use the <a href="qserversocket.html">QServerSocket</a> class. It is a very
|
|
simple implementation of a HTTP daemon that listens on port 8080 and
|
|
sends back a simple HTML page back for every GET request it gets. After
|
|
sending the page, it closes the connection.
|
|
<p> <hr>
|
|
<p> Implementation (httpd.cpp):
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/httpd.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 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 <<a href="qsocket-h.html">qsocket.h</a>>
|
|
#include <<a href="qregexp-h.html">qregexp.h</a>>
|
|
#include <<a href="qserversocket-h.html">qserversocket.h</a>>
|
|
#include <<a href="qapplication-h.html">qapplication.h</a>>
|
|
#include <<a href="qmainwindow-h.html">qmainwindow.h</a>>
|
|
#include <<a href="qtextstream-h.html">qtextstream.h</a>>
|
|
#include <<a href="qvbox-h.html">qvbox.h</a>>
|
|
#include <<a href="qlabel-h.html">qlabel.h</a>>
|
|
#include <<a href="qtextview-h.html">qtextview.h</a>>
|
|
#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
|
|
|
|
// HttpDaemon is the the class that implements the simple HTTP server.
|
|
class HttpDaemon : public <a href="qserversocket.html">QServerSocket</a>
|
|
{
|
|
<a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
|
|
public:
|
|
HttpDaemon( <a href="qobject.html">QObject</a>* parent=0 ) :
|
|
<a href="qserversocket.html">QServerSocket</a>(8080,1,parent)
|
|
{
|
|
if ( !ok() ) {
|
|
<a href="qapplication.html#qWarning">qWarning</a>("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().
|
|
<a href="qsocket.html">QSocket</a>* s = new <a href="qsocket.html">QSocket</a>( this );
|
|
<a name="x731"></a> connect( s, SIGNAL(<a href="qsocket.html#readyRead">readyRead</a>()), this, SLOT(readClient()) );
|
|
<a name="x729"></a> connect( s, SIGNAL(<a href="qsocket.html#delayedCloseFinished">delayedCloseFinished</a>()), this, SLOT(discardClient()) );
|
|
<a name="x732"></a> s-><a href="qsocket.html#setSocket">setSocket</a>( 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.
|
|
<a href="qsocket.html">QSocket</a>* socket = (QSocket*)sender();
|
|
<a name="x727"></a> if ( socket-><a href="qsocket.html#canReadLine">canReadLine</a>() ) {
|
|
<a name="x733"></a><a name="x730"></a> <a href="qstringlist.html">QStringList</a> tokens = QStringList::<a href="qstringlist.html#split">split</a>( QRegExp("[ \r\n][ \r\n]*"), socket-><a href="qsocket.html#readLine">readLine</a>() );
|
|
if ( tokens[0] == "GET" ) {
|
|
<a href="qtextstream.html">QTextStream</a> os( socket );
|
|
<a name="x735"></a> os.<a href="qtextstream.html#setEncoding">setEncoding</a>( 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";
|
|
<a name="x728"></a> socket-><a href="qsocket.html#close">close</a>();
|
|
emit wroteToClient();
|
|
}
|
|
}
|
|
}
|
|
void discardClient()
|
|
{
|
|
<a href="qsocket.html">QSocket</a>* 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 <a href="qvbox.html">QVBox</a>
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
HttpInfo()
|
|
{
|
|
HttpDaemon *httpd = new HttpDaemon( this );
|
|
|
|
<a href="qstring.html">QString</a> itext = QString(
|
|
"This is a small httpd example.\n"
|
|
"You can connect with your\n"
|
|
"web browser to port %1"
|
|
<a name="x726"></a> ).arg( httpd-><a href="qserversocket.html#port">port</a>() );
|
|
<a href="qlabel.html">QLabel</a> *lb = new <a href="qlabel.html">QLabel</a>( itext, this );
|
|
lb-><a href="qlabel.html#setAlignment">setAlignment</a>( AlignHCenter );
|
|
infoText = new <a href="qtextview.html">QTextView</a>( this );
|
|
<a href="qpushbutton.html">QPushButton</a> *quit = new <a href="qpushbutton.html">QPushButton</a>( "quit" , this );
|
|
|
|
connect( httpd, SIGNAL(newConnect()), SLOT(newConnect()) );
|
|
connect( httpd, SIGNAL(endConnect()), SLOT(endConnect()) );
|
|
connect( httpd, SIGNAL(wroteToClient()), SLOT(wroteToClient()) );
|
|
<a name="x724"></a> connect( quit, SIGNAL(<a href="qbutton.html#pressed">pressed</a>()), qApp, SLOT(<a href="qapplication.html#quit">quit</a>()) );
|
|
}
|
|
|
|
~HttpInfo()
|
|
{
|
|
}
|
|
|
|
private slots:
|
|
void newConnect()
|
|
{
|
|
<a name="x734"></a> infoText-><a href="qtextedit.html#append">append</a>( "New connection" );
|
|
}
|
|
void endConnect()
|
|
{
|
|
infoText-><a href="qtextedit.html#append">append</a>( "Connection closed\n\n" );
|
|
}
|
|
void wroteToClient()
|
|
{
|
|
infoText-><a href="qtextedit.html#append">append</a>( "Wrote to client" );
|
|
}
|
|
|
|
private:
|
|
<a href="qtextview.html">QTextView</a> *infoText;
|
|
};
|
|
|
|
|
|
int main( int argc, char** argv )
|
|
{
|
|
<a href="qapplication.html">QApplication</a> app( argc, argv );
|
|
HttpInfo info;
|
|
app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &info );
|
|
info.<a href="qwidget.html#show">show</a>();
|
|
return app.<a href="qapplication.html#exec">exec</a>();
|
|
}
|
|
|
|
#include "httpd.moc"
|
|
</pre>
|
|
|
|
<p>See also <a href="network-examples.html">Network Examples</a>.
|
|
|
|
<!-- eof -->
|
|
<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>Qt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|