Wt FAQ on how to obtain the client's (that is: any person that browser your Wt website from any place in the world) IP address.

Technical facts

Application type(s)

Web application

Operating system(s) or programming environment(s)

Ubuntu 11.04 (natty)

IDE(s):

Qt Creator 2.0.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.4.5

Libraries used:

STL: GNU ISO C++ Library, version 4.4.5
Wt: version 3.1.2

Qt project file: CppWtGetIpAddress.pro


#-------------------------------------------------

#

# Project created by QtCreator 2011-05-15T20:17:39

#

#-------------------------------------------------

QT       += core

QT       -= gui

LIBS += -lwt -lwthttp -lboost_program_options

INCLUDEPATH += ../../Classes/CppWtAutoConfig

TARGET = CppWtGetIpAddress

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp \

    ../../Classes/CppWtAutoConfig/wtautoconfig.cpp

HEADERS += \

    ../../Classes/CppWtAutoConfig/wtautoconfig.h

main.cpp


#include <Wt/WApplication>

#include <Wt/WEnvironment>

#include <Wt/WContainerWidget>

#include <Wt/WLabel>

//---------------------------------------------------------------------------

#include "wtautoconfig.h"

//---------------------------------------------------------------------------

const std::string GetIpAddress(const Wt::WEnvironment& env)

{

  return env.clientAddress();

}

//---------------------------------------------------------------------------

struct WtDialog : public Wt::WContainerWidget

{

  WtDialog(const std::string& ip_address)

  {

    new Wt::WLabel(

      std::string("Client IP address: ")

      + ip_address,this);

  }

};

//---------------------------------------------------------------------------

struct WtApplication : public Wt::WApplication

{

  WtApplication(const Wt::WEnvironment& env)

  : Wt::WApplication(env)

  {



    this->setTitle("CppWtGetIpAddress");

    this->useStyleSheet("wt.css");

    this->enableUpdates();

    const std::string ip_address = env.clientAddress();

    root()->addWidget(new WtDialog(ip_address));

  }

};

//---------------------------------------------------------------------------

Wt::WApplication * createApplication(const Wt::WEnvironment& env)

{

  return new WtApplication(env);

}

//---------------------------------------------------------------------------

int main(int argc, char **argv)

{

  WtAutoConfig a(argc,argv,createApplication);

  WtAutoConfig::SaveDefaultStylesheet();

  return a.Run();

}

//---------------------------------------------------------------------------

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(C++) How to obtain the client's IP address?

Technical facts

Qt project file: CppWtGetIpAddress.pro

main.cpp