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//
// Ping.cpp
//
// $Id: //poco/1.4/Net/samples/Ping/src/Ping.cpp#1 $
//
// This sample demonstrates the Application class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/Util/Application.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/HelpFormatter.h"
#include "Poco/Util/AbstractConfiguration.h"
#include "Poco/Net/ICMPSocket.h"
#include "Poco/Net/ICMPClient.h"
#include "Poco/Net/IPAddress.h"
#include "Poco/Net/ICMPEventArgs.h"
#include "Poco/AutoPtr.h"
#include "Poco/NumberParser.h"
#include "Poco/Delegate.h"
#include <iostream>
#include <sstream>


using Poco::Util::Application;
using Poco::Util::Option;
using Poco::Util::OptionSet;
using Poco::Util::HelpFormatter;
using Poco::Util::AbstractConfiguration;
using Poco::Net::ICMPSocket;
using Poco::Net::ICMPClient;
using Poco::Net::IPAddress;
using Poco::Net::ICMPEventArgs;
using Poco::AutoPtr;
using Poco::NumberParser;
using Poco::Delegate;


class Ping: public Application
/// This sample demonstrates the Poco::Net::ICMPClient in conjunction with
/// Poco Foundation C#-like events functionality.
///
/// Try Ping --help (on Unix platforms) or Ping /help (elsewhere) for
/// more information.
{
public:
Ping():
_helpRequested(false),
_icmpClient(IPAddress::IPv4),
_repetitions(4),
_target("localhost")
{
}

protected:
void initialize(Application& self)
{
loadConfiguration(); // load default configuration files, if present
Application::initialize(self);

_icmpClient.pingBegin += Delegate<Ping, ICMPEventArgs>(this, &Ping::onBegin);
_icmpClient.pingReply += Delegate<Ping, ICMPEventArgs>(this, &Ping::onReply);
_icmpClient.pingError += Delegate<Ping, ICMPEventArgs>(this, &Ping::onError);
_icmpClient.pingEnd += Delegate<Ping, ICMPEventArgs>(this, &Ping::onEnd);
}

void uninitialize()
{
_icmpClient.pingBegin -= Delegate<Ping, ICMPEventArgs>(this, &Ping::onBegin);
_icmpClient.pingReply -= Delegate<Ping, ICMPEventArgs>(this, &Ping::onReply);
_icmpClient.pingError -= Delegate<Ping, ICMPEventArgs>(this, &Ping::onError);
_icmpClient.pingEnd -= Delegate<Ping, ICMPEventArgs>(this, &Ping::onEnd);

Application::uninitialize();
}

void defineOptions(OptionSet& options)
{
Application::defineOptions(options);

options.addOption(
Option("help", "h", "display help information on command line arguments")
.required(false)
.repeatable(false));

options.addOption(
Option("repetitions", "r", "define the number of repetitions")
.required(false)
.repeatable(false)
.argument("repetitions"));

options.addOption(
Option("target", "t", "define the target address")
.required(false)
.repeatable(false)
.argument("target"));
}

void handleOption(const std::string& name, const std::string& value)
{
Application::handleOption(name, value);

if (name == "help")
_helpRequested = true;
else if (name == "repetitions")
_repetitions = NumberParser::parse(value);
else if (name == "target")
_target = value;
}

void displayHelp()
{
HelpFormatter helpFormatter(options());
helpFormatter.setCommand(commandName());
helpFormatter.setUsage("OPTIONS");
helpFormatter.setHeader(
"A sample application that demonstrates the functionality of the "
"Poco::Net::ICMPClient class in conjunction with Poco::Events package functionality.");
helpFormatter.format(std::cout);
}


int main(const std::vector<std::string>& args)
{
if (_helpRequested)
displayHelp();
else
_icmpClient.ping(_target, _repetitions);

return Application::EXIT_OK;
}


void onBegin(const void* pSender, ICMPEventArgs& args)
{
std::ostringstream os;
os << "Pinging " << args.hostName() << " [" << args.hostAddress() << "] with " << args.dataSize() << " bytes of data:"
<< std::endl << "---------------------------------------------" << std::endl;
logger().information(os.str());
}

void onReply(const void* pSender, ICMPEventArgs& args)
{
std::ostringstream os;
os << "Reply from " << args.hostAddress()
<< " bytes=" << args.dataSize()
<< " time=" << args.replyTime() << "ms"
<< " TTL=" << args.ttl();
logger().information(os.str());
}

void onError(const void* pSender, ICMPEventArgs& args)
{
std::ostringstream os;
os << args.error();
logger().information(os.str());
}

void onEnd(const void* pSender, ICMPEventArgs& args)
{
std::ostringstream os;
os << std::endl << "--- Ping statistics for " << args.hostName() << " ---"
<< std::endl << "Packets: Sent=" << args.sent() << ", Received=" << args.received()
<< " Lost=" << args.repetitions() - args.received() << " (" << 100.0 - args.percent() << "% loss),"
<< std::endl << "Approximate round trip times in milliseconds: " << std::endl
<< "Minimum=" << args.minRTT() << "ms, Maximum=" << args.maxRTT()
<< "ms, Average=" << args.avgRTT() << "ms"
<< std::endl << "------------------------------------------";
logger().information(os.str());
}

private:
bool _helpRequested;
ICMPClient _icmpClient;
int _repetitions;
std::string _target;
};


int main(int argc, char** argv)
{
AutoPtr<Ping> pApp = new Ping;
try
{
pApp->init(argc, argv);
}
catch (Poco::Exception& exc)
{
pApp->logger().log(exc);
return Application::EXIT_CONFIG;
}
return pApp->run();
}
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