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118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
//
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// MulticastEchoServer.cpp
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//
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// $Id: //poco/1.2/Net/testsuite/src/MulticastEchoServer.cpp#1 $
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//
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// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "MulticastEchoServer.h"
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#include "Poco/Timespan.h"
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#include <iostream>
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using Poco::Net::Socket;
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using Poco::Net::DatagramSocket;
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using Poco::Net::SocketAddress;
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using Poco::Net::IPAddress;
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using Poco::Net::NetworkInterface;
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MulticastEchoServer::MulticastEchoServer():
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_group("239.255.1.2", 12345),
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_if(findInterface()),
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_thread("MulticastEchoServer"),
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_stop(false)
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{
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_socket.bind(SocketAddress(IPAddress(), _group.port()), true);
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_socket.joinGroup(_group.host(), _if);
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_thread.start(*this);
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_ready.wait();
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}
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MulticastEchoServer::~MulticastEchoServer()
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{
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_stop = true;
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_thread.join();
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_socket.leaveGroup(_group.host(), _if);
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}
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Poco::UInt16 MulticastEchoServer::port() const
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{
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return _socket.address().port();
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}
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void MulticastEchoServer::run()
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{
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_ready.set();
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Poco::Timespan span(250000);
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while (!_stop)
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{
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if (_socket.poll(span, Socket::SELECT_READ))
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{
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try
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{
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char buffer[256];
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SocketAddress sender;
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int n = _socket.receiveFrom(buffer, sizeof(buffer), sender);
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_socket.sendTo(buffer, n, sender);
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}
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catch (Poco::Exception& exc)
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{
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std::cerr << "MulticastEchoServer: " << exc.displayText() << std::endl;
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}
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}
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}
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}
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const SocketAddress& MulticastEchoServer::group() const
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{
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return _group;
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}
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const NetworkInterface& MulticastEchoServer::interface() const
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{
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return _if;
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}
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Poco::Net::NetworkInterface MulticastEchoServer::findInterface()
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{
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NetworkInterface::NetworkInterfaceList ifs = NetworkInterface::list();
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for (NetworkInterface::NetworkInterfaceList::const_iterator it = ifs.begin(); it != ifs.end(); ++it)
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{
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if (it->supportsIPv4() && it->address().isUnicast() && !it->address().isLoopback())
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return *it;
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}
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return NetworkInterface();
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}
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