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MulticastEchoServer.cpp
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129 lines (106 loc) · 3.31 KB
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//
// MulticastEchoServer.cpp
//
// $Id: //poco/1.4/Net/testsuite/src/MulticastEchoServer.cpp#1 $
//
// Copyright (c) 2005-2006, 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 "MulticastEchoServer.h"
#ifdef POCO_NET_HAS_INTERFACE
#include "Poco/Timespan.h"
#include <iostream>
using Poco::Net::Socket;
using Poco::Net::DatagramSocket;
using Poco::Net::SocketAddress;
using Poco::Net::IPAddress;
using Poco::Net::NetworkInterface;
MulticastEchoServer::MulticastEchoServer():
_group("239.255.1.2", 12345),
_if(findInterface()),
_thread("MulticastEchoServer"),
_stop(false)
{
_socket.bind(SocketAddress(IPAddress(), _group.port()), true);
_socket.joinGroup(_group.host(), _if);
_thread.start(*this);
_ready.wait();
}
MulticastEchoServer::~MulticastEchoServer()
{
_stop = true;
_thread.join();
_socket.leaveGroup(_group.host(), _if);
}
Poco::UInt16 MulticastEchoServer::port() const
{
return _socket.address().port();
}
void MulticastEchoServer::run()
{
_ready.set();
Poco::Timespan span(250000);
while (!_stop)
{
if (_socket.poll(span, Socket::SELECT_READ))
{
try
{
char buffer[256];
SocketAddress sender;
int n = _socket.receiveFrom(buffer, sizeof(buffer), sender);
_socket.sendTo(buffer, n, sender);
}
catch (Poco::Exception& exc)
{
std::cerr << "MulticastEchoServer: " << exc.displayText() << std::endl;
}
}
}
}
const SocketAddress& MulticastEchoServer::group() const
{
return _group;
}
const NetworkInterface& MulticastEchoServer::interfc() const
{
return _if;
}
Poco::Net::NetworkInterface MulticastEchoServer::findInterface()
{
NetworkInterface::Map m = NetworkInterface::map();
for (NetworkInterface::Map::const_iterator it = m.begin(); it != m.end(); ++it)
{
if (it->second.supportsIPv4() &&
it->second.firstAddress(IPAddress::IPv4).isUnicast() &&
!it->second.isLoopback() &&
!it->second.isPointToPoint())
{
return it->second;
}
}
return NetworkInterface();
}
#endif // POCO_NET_HAS_INTERFACE