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git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@4234 c8812cc2-4d05-0410-92ff-de0c093fc19c
150 lines
3.5 KiB
C++
150 lines
3.5 KiB
C++
/***************************************************************************
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qgshttptransaction.h - Tracks a HTTP request with its response,
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with particular attention to tracking
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HTTP redirect responses
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-------------------
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begin : 17 Mar, 2005
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copyright : (C) 2005 by Brendan Morley
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email : morb at ozemail dot com dot au
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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/* $Id$ */
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#ifndef QGSHTTPTRANSACTION_H
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#define QGSHTTPTRANSACTION_H
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#include <q3http.h>
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#include <qstring.h>
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/**
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\brief HTTP request/response manager that is redirect-aware.
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This class extends the Qt QHttp concept by being able to recognise
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and respond to redirection responses (e.g. HTTP code 302)
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TODO: Make it work
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*/
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class QgsHttpTransaction : public QObject
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{
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Q_OBJECT
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public:
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/**
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* Constructor.
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*/
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QgsHttpTransaction( QString uri, QString proxyHost = 0, Q_UINT16 proxyPort = 80 );
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//! Destructor
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virtual ~QgsHttpTransaction();
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void getAsynchronously();
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QByteArray getSynchronously(int redirections = 0);
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QString responseContentType();
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public slots:
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void dataStarted( int id );
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void dataHeaderReceived( const Q3HttpResponseHeader& resp );
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void dataReceived( const Q3HttpResponseHeader& resp );
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void dataProgress( int done, int total );
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void dataFinished( int id, bool error );
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void dataStateChanged( int state );
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signals:
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/** \brief emit a signal to notify of a progress event */
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void setProgress(int theProgress, int theTotalSteps);
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/** \brief emit a signal to be caught by qgisapp and display a msg on status bar */
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void setStatus(QString theStatusQString);
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private:
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/**
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* Indicates the associated QHttp object
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*
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* \note We tried to use this as a plain QHttp object
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* but strange things were happening with the signals -
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* therefore we use the "pointer to" instead.
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*/
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Q3Http* http;
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/**
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* Indicates the QHttp ID
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*/
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int httpid;
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/**
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* Indicates if the transaction is in progress
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*/
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bool httpactive;
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/*
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* Indicates the response from the QHttp
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*/
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QByteArray httpresponse;
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/*
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* Indicates the content type of the response from the QHttp
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*/
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QString httpresponsecontenttype;
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/**
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* The original URL requested for this transaction
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*/
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QString httpurl;
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/**
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* The host being used for this transaction
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*/
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QString httphost;
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/**
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* The port being used for this transaction
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*/
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Q_UINT16 httpport;
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/**
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* If not empty, indicates that the QHttp is a redirect
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* to the contents of this variable
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*/
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QString httpredirecturl;
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/**
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* Number of http redirections this transaction has been
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* subjected to.
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*
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* TODO: Use this as part of a redirection loop detector
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*
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*/
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int httpredirections;
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};
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#endif
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