//
// ICMPClient.cpp
//
// $Id: //poco/svn/Net/src/ICMPClient.cpp#2 $
//
// Library: Net
// Package: ICMP
// Module:  ICMPClient
//
// Copyright (c) 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/Net/SocketAddress.h"
#include "Poco/Net/ICMPClient.h"
#include "Poco/Net/ICMPSocket.h"
#include "Poco/Net/NetException.h"
#include "Poco/Channel.h"
#include "Poco/Message.h"
#include "Poco/Exception.h"
#include <sstream>


using Poco::Channel;
using Poco::Message;
using Poco::InvalidArgumentException;
using Poco::NotImplementedException;
using Poco::TimeoutException;
using Poco::Exception;


namespace Poco {
namespace Net {


ICMPClient::ICMPClient(IPAddress::Family family): 
	_family(family)
{
}


ICMPClient::~ICMPClient()
{
}


int ICMPClient::ping(const std::string& address, int repeat) const
{
	if (repeat <= 0) return 0;

	SocketAddress addr(address, 0);
	return ping(addr, repeat);
}


int ICMPClient::ping(SocketAddress& address, int repeat) const
{
	if (repeat <= 0) return 0;

	ICMPSocket icmpSocket(_family);
	SocketAddress returnAddress;

	ICMPEventArgs eventArgs(address, repeat, icmpSocket.dataSize(), icmpSocket.ttl());
	pingBegin.notify(this, eventArgs);

	for (int i = 0; i < repeat; ++i)
	{
		icmpSocket.sendTo(address);
		++eventArgs;

		try
		{
			int t = icmpSocket.receiveFrom(returnAddress);
			eventArgs.setReplyTime(i, t);
			pingReply.notify(this, eventArgs);
		}
		catch (TimeoutException&)
		{
			std::ostringstream os;
			os << address.host().toString() << ": Request timed out.";
			eventArgs.setError(i, os.str());
			pingError.notify(this, eventArgs);
			continue;
		}
		catch (ICMPException& ex)
		{
			std::ostringstream os;
			os << address.host().toString() << ": " << ex.what();
			eventArgs.setError(i, os.str());
			pingError.notify(this, eventArgs);
			continue;
		}
		catch (Exception& ex)
		{
			std::ostringstream os;
			os << ex.displayText();
			eventArgs.setError(i, os.str());
			pingError.notify(this, eventArgs);
			continue;
		}
	}
	pingEnd.notify(this, eventArgs);
	return eventArgs.received();
}


int ICMPClient::pingIPv4(const std::string& address, int repeat)
{
	if (repeat <= 0) return 0;

	SocketAddress a(address, 0);
	return ping(a, IPAddress::IPv4, repeat);
}


int ICMPClient::ping(SocketAddress& address, IPAddress::Family family, int repeat)
{
	if (repeat <= 0) return 0;

	ICMPSocket icmpSocket(family);
	SocketAddress returnAddress;
	int received = 0;

	for (int i = 0; i < repeat; ++i)
	{
		icmpSocket.sendTo(address);
		try
		{
			icmpSocket.receiveFrom(returnAddress);
			++received;
		}
		catch (TimeoutException&)
		{
		}
		catch (ICMPException&)
		{
		}
	}
	return received;
}


} } // namespace Poco::Net
