tomwalters@509: /*
tomwalters@509: 	oscpack -- Open Sound Control packet manipulation library
tomwalters@509: 	http://www.audiomulch.com/~rossb/oscpack
tomwalters@509: 
tomwalters@509: 	Copyright (c) 2004-2005 Ross Bencina <rossb@audiomulch.com>
tomwalters@509: 
tomwalters@509: 	Permission is hereby granted, free of charge, to any person obtaining
tomwalters@509: 	a copy of this software and associated documentation files
tomwalters@509: 	(the "Software"), to deal in the Software without restriction,
tomwalters@509: 	including without limitation the rights to use, copy, modify, merge,
tomwalters@509: 	publish, distribute, sublicense, and/or sell copies of the Software,
tomwalters@509: 	and to permit persons to whom the Software is furnished to do so,
tomwalters@509: 	subject to the following conditions:
tomwalters@509: 
tomwalters@509: 	The above copyright notice and this permission notice shall be
tomwalters@509: 	included in all copies or substantial portions of the Software.
tomwalters@509: 
tomwalters@509: 	Any person wishing to distribute modifications to the Software is
tomwalters@509: 	requested to send the modifications to the original developer so that
tomwalters@509: 	they can be incorporated into the canonical version.
tomwalters@509: 
tomwalters@509: 	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
tomwalters@509: 	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
tomwalters@509: 	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
tomwalters@509: 	IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
tomwalters@509: 	ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
tomwalters@509: 	CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
tomwalters@509: 	WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
tomwalters@509: */
tomwalters@509: #include "ip/UdpSocket.h"
tomwalters@509: 
tomwalters@509: #include <winsock2.h>   // this must come first to prevent errors with MSVC7
tomwalters@509: #include <windows.h>
tomwalters@509: #include <mmsystem.h>   // for timeGetTime()
tomwalters@509: 
tomwalters@509: #include <vector>
tomwalters@509: #include <algorithm>
tomwalters@509: #include <stdexcept>
tomwalters@509: #include <assert.h>
tomwalters@509: #include <signal.h>
tomwalters@509: 
tomwalters@509: #include "ip/NetworkingUtils.h"
tomwalters@509: #include "ip/PacketListener.h"
tomwalters@509: #include "ip/TimerListener.h"
tomwalters@509: 
tomwalters@509: 
tomwalters@509: typedef int socklen_t;
tomwalters@509: 
tomwalters@509: 
tomwalters@509: static void SockaddrFromIpEndpointName( struct sockaddr_in& sockAddr, const IpEndpointName& endpoint )
tomwalters@509: {
tomwalters@509:     memset( (char *)&sockAddr, 0, sizeof(sockAddr ) );
tomwalters@509:     sockAddr.sin_family = AF_INET;
tomwalters@509: 
tomwalters@509: 	sockAddr.sin_addr.s_addr = 
tomwalters@509: 		(endpoint.address == IpEndpointName::ANY_ADDRESS)
tomwalters@509: 		? INADDR_ANY
tomwalters@509: 		: htonl( endpoint.address );
tomwalters@509: 
tomwalters@509: 	sockAddr.sin_port =
tomwalters@509: 		(endpoint.port == IpEndpointName::ANY_PORT)
tomwalters@509: 		? (short)0
tomwalters@509: 		: htons( (short)endpoint.port );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: 
tomwalters@509: static IpEndpointName IpEndpointNameFromSockaddr( const struct sockaddr_in& sockAddr )
tomwalters@509: {
tomwalters@509: 	return IpEndpointName( 
tomwalters@509: 		(sockAddr.sin_addr.s_addr == INADDR_ANY) 
tomwalters@509: 			? IpEndpointName::ANY_ADDRESS 
tomwalters@509: 			: ntohl( sockAddr.sin_addr.s_addr ),
tomwalters@509: 		(sockAddr.sin_port == 0)
tomwalters@509: 			? IpEndpointName::ANY_PORT
tomwalters@509: 			: ntohs( sockAddr.sin_port )
tomwalters@509: 		);
tomwalters@509: }
tomwalters@509: 
tomwalters@509: 
tomwalters@509: class UdpSocket::Implementation{
tomwalters@509:     NetworkInitializer networkInitializer_;
tomwalters@509: 
tomwalters@509: 	bool isBound_;
tomwalters@509: 	bool isConnected_;
tomwalters@509: 
tomwalters@509: 	SOCKET socket_;
tomwalters@509: 	struct sockaddr_in connectedAddr_;
tomwalters@509: 	struct sockaddr_in sendToAddr_;
tomwalters@509: 
tomwalters@509: public:
tomwalters@509: 
tomwalters@509: 	Implementation()
tomwalters@509: 		: isBound_( false )
tomwalters@509: 		, isConnected_( false )
tomwalters@509: 		, socket_( INVALID_SOCKET )
tomwalters@509: 	{
tomwalters@509: 		if( (socket_ = socket( AF_INET, SOCK_DGRAM, 0 )) == INVALID_SOCKET ){
tomwalters@509:             throw std::runtime_error("unable to create udp socket\n");
tomwalters@509:         }
tomwalters@509: 
tomwalters@509: 		memset( &sendToAddr_, 0, sizeof(sendToAddr_) );
tomwalters@509:         sendToAddr_.sin_family = AF_INET;
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	~Implementation()
tomwalters@509: 	{
tomwalters@509: 		if (socket_ != INVALID_SOCKET) closesocket(socket_);
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	IpEndpointName LocalEndpointFor( const IpEndpointName& remoteEndpoint ) const
tomwalters@509: 	{
tomwalters@509: 		assert( isBound_ );
tomwalters@509: 
tomwalters@509: 		// first connect the socket to the remote server
tomwalters@509:         
tomwalters@509:         struct sockaddr_in connectSockAddr;
tomwalters@509: 		SockaddrFromIpEndpointName( connectSockAddr, remoteEndpoint );
tomwalters@509:        
tomwalters@509:         if (connect(socket_, (struct sockaddr *)&connectSockAddr, sizeof(connectSockAddr)) < 0) {
tomwalters@509:             throw std::runtime_error("unable to connect udp socket\n");
tomwalters@509:         }
tomwalters@509: 
tomwalters@509:         // get the address
tomwalters@509: 
tomwalters@509:         struct sockaddr_in sockAddr;
tomwalters@509:         memset( (char *)&sockAddr, 0, sizeof(sockAddr ) );
tomwalters@509:         socklen_t length = sizeof(sockAddr);
tomwalters@509:         if (getsockname(socket_, (struct sockaddr *)&sockAddr, &length) < 0) {
tomwalters@509:             throw std::runtime_error("unable to getsockname\n");
tomwalters@509:         }
tomwalters@509:         
tomwalters@509: 		if( isConnected_ ){
tomwalters@509: 			// reconnect to the connected address
tomwalters@509: 			
tomwalters@509: 			if (connect(socket_, (struct sockaddr *)&connectedAddr_, sizeof(connectedAddr_)) < 0) {
tomwalters@509: 				throw std::runtime_error("unable to connect udp socket\n");
tomwalters@509: 			}
tomwalters@509: 
tomwalters@509: 		}else{
tomwalters@509: 			// unconnect from the remote address
tomwalters@509: 		
tomwalters@509: 			struct sockaddr_in unconnectSockAddr;
tomwalters@509: 			SockaddrFromIpEndpointName( unconnectSockAddr, IpEndpointName() );
tomwalters@509: 
tomwalters@509: 			if( connect(socket_, (struct sockaddr *)&unconnectSockAddr, sizeof(unconnectSockAddr)) < 0 
tomwalters@509: 					&& WSAGetLastError() != WSAEADDRNOTAVAIL ){
tomwalters@509: 				throw std::runtime_error("unable to un-connect udp socket\n");
tomwalters@509: 			}
tomwalters@509: 		}
tomwalters@509: 
tomwalters@509: 		return IpEndpointNameFromSockaddr( sockAddr );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	void Connect( const IpEndpointName& remoteEndpoint )
tomwalters@509: 	{
tomwalters@509: 		SockaddrFromIpEndpointName( connectedAddr_, remoteEndpoint );
tomwalters@509:        
tomwalters@509:         if (connect(socket_, (struct sockaddr *)&connectedAddr_, sizeof(connectedAddr_)) < 0) {
tomwalters@509:             throw std::runtime_error("unable to connect udp socket\n");
tomwalters@509:         }
tomwalters@509: 
tomwalters@509: 		isConnected_ = true;
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	void Send( const char *data, int size )
tomwalters@509: 	{
tomwalters@509: 		assert( isConnected_ );
tomwalters@509: 
tomwalters@509:         send( socket_, data, size, 0 );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void SendTo( const IpEndpointName& remoteEndpoint, const char *data, int size )
tomwalters@509: 	{
tomwalters@509: 		sendToAddr_.sin_addr.s_addr = htonl( remoteEndpoint.address );
tomwalters@509:         sendToAddr_.sin_port = htons( (short)remoteEndpoint.port );
tomwalters@509: 
tomwalters@509:         sendto( socket_, data, size, 0, (sockaddr*)&sendToAddr_, sizeof(sendToAddr_) );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	void Bind( const IpEndpointName& localEndpoint )
tomwalters@509: 	{
tomwalters@509: 		struct sockaddr_in bindSockAddr;
tomwalters@509: 		SockaddrFromIpEndpointName( bindSockAddr, localEndpoint );
tomwalters@509: 
tomwalters@509:         if (bind(socket_, (struct sockaddr *)&bindSockAddr, sizeof(bindSockAddr)) < 0) {
tomwalters@509:             throw std::runtime_error("unable to bind udp socket\n");
tomwalters@509:         }
tomwalters@509: 
tomwalters@509: 		isBound_ = true;
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	bool IsBound() const { return isBound_; }
tomwalters@509: 
tomwalters@509:     int ReceiveFrom( IpEndpointName& remoteEndpoint, char *data, int size )
tomwalters@509: 	{
tomwalters@509: 		assert( isBound_ );
tomwalters@509: 
tomwalters@509: 		struct sockaddr_in fromAddr;
tomwalters@509:         socklen_t fromAddrLen = sizeof(fromAddr);
tomwalters@509:              	 
tomwalters@509:         int result = recvfrom(socket_, data, size, 0,
tomwalters@509:                     (struct sockaddr *) &fromAddr, (socklen_t*)&fromAddrLen);
tomwalters@509: 		if( result < 0 )
tomwalters@509: 			return 0;
tomwalters@509: 
tomwalters@509: 		remoteEndpoint.address = ntohl(fromAddr.sin_addr.s_addr);
tomwalters@509: 		remoteEndpoint.port = ntohs(fromAddr.sin_port);
tomwalters@509: 
tomwalters@509: 		return result;
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	SOCKET& Socket() { return socket_; }
tomwalters@509: };
tomwalters@509: 
tomwalters@509: UdpSocket::UdpSocket()
tomwalters@509: {
tomwalters@509: 	impl_ = new Implementation();
tomwalters@509: }
tomwalters@509: 
tomwalters@509: UdpSocket::~UdpSocket()
tomwalters@509: {
tomwalters@509: 	delete impl_;
tomwalters@509: }
tomwalters@509: 
tomwalters@509: IpEndpointName UdpSocket::LocalEndpointFor( const IpEndpointName& remoteEndpoint ) const
tomwalters@509: {
tomwalters@509: 	return impl_->LocalEndpointFor( remoteEndpoint );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void UdpSocket::Connect( const IpEndpointName& remoteEndpoint )
tomwalters@509: {
tomwalters@509: 	impl_->Connect( remoteEndpoint );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void UdpSocket::Send( const char *data, int size )
tomwalters@509: {
tomwalters@509: 	impl_->Send( data, size );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void UdpSocket::SendTo( const IpEndpointName& remoteEndpoint, const char *data, int size )
tomwalters@509: {
tomwalters@509: 	impl_->SendTo( remoteEndpoint, data, size );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void UdpSocket::Bind( const IpEndpointName& localEndpoint )
tomwalters@509: {
tomwalters@509: 	impl_->Bind( localEndpoint );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: bool UdpSocket::IsBound() const
tomwalters@509: {
tomwalters@509: 	return impl_->IsBound();
tomwalters@509: }
tomwalters@509: 
tomwalters@509: int UdpSocket::ReceiveFrom( IpEndpointName& remoteEndpoint, char *data, int size )
tomwalters@509: {
tomwalters@509: 	return impl_->ReceiveFrom( remoteEndpoint, data, size );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: 
tomwalters@509: struct AttachedTimerListener{
tomwalters@509: 	AttachedTimerListener( int id, int p, TimerListener *tl )
tomwalters@509: 		: initialDelayMs( id )
tomwalters@509: 		, periodMs( p )
tomwalters@509: 		, listener( tl ) {}
tomwalters@509: 	int initialDelayMs;
tomwalters@509: 	int periodMs;
tomwalters@509: 	TimerListener *listener;
tomwalters@509: };
tomwalters@509: 
tomwalters@509: 
tomwalters@509: static bool CompareScheduledTimerCalls( 
tomwalters@509: 		const std::pair< double, AttachedTimerListener > & lhs, const std::pair< double, AttachedTimerListener > & rhs )
tomwalters@509: {
tomwalters@509: 	return lhs.first < rhs.first;
tomwalters@509: }
tomwalters@509: 
tomwalters@509: 
tomwalters@509: SocketReceiveMultiplexer *multiplexerInstanceToAbortWithSigInt_ = 0;
tomwalters@509: 
tomwalters@509: extern "C" /*static*/ void InterruptSignalHandler( int );
tomwalters@509: /*static*/ void InterruptSignalHandler( int )
tomwalters@509: {
tomwalters@509: 	multiplexerInstanceToAbortWithSigInt_->AsynchronousBreak();
tomwalters@509: 	signal( SIGINT, SIG_DFL );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: 
tomwalters@509: class SocketReceiveMultiplexer::Implementation{
tomwalters@509:     NetworkInitializer networkInitializer_;
tomwalters@509: 
tomwalters@509: 	std::vector< std::pair< PacketListener*, UdpSocket* > > socketListeners_;
tomwalters@509: 	std::vector< AttachedTimerListener > timerListeners_;
tomwalters@509: 
tomwalters@509: 	volatile bool break_;
tomwalters@509: 	HANDLE breakEvent_;
tomwalters@509: 
tomwalters@509: 	double GetCurrentTimeMs() const
tomwalters@509: 	{
tomwalters@509: 		return timeGetTime(); // FIXME: bad choice if you want to run for more than 40 days
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: public:
tomwalters@509:     Implementation()
tomwalters@509: 	{
tomwalters@509: 		breakEvent_ = CreateEvent( NULL, FALSE, FALSE, NULL );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     ~Implementation()
tomwalters@509: 	{
tomwalters@509: 		CloseHandle( breakEvent_ );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void AttachSocketListener( UdpSocket *socket, PacketListener *listener )
tomwalters@509: 	{
tomwalters@509: 		assert( std::find( socketListeners_.begin(), socketListeners_.end(), std::make_pair(listener, socket) ) == socketListeners_.end() );
tomwalters@509: 		// we don't check that the same socket has been added multiple times, even though this is an error
tomwalters@509: 		socketListeners_.push_back( std::make_pair( listener, socket ) );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void DetachSocketListener( UdpSocket *socket, PacketListener *listener )
tomwalters@509: 	{
tomwalters@509: 		std::vector< std::pair< PacketListener*, UdpSocket* > >::iterator i = 
tomwalters@509: 				std::find( socketListeners_.begin(), socketListeners_.end(), std::make_pair(listener, socket) );
tomwalters@509: 		assert( i != socketListeners_.end() );
tomwalters@509: 
tomwalters@509: 		socketListeners_.erase( i );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void AttachPeriodicTimerListener( int periodMilliseconds, TimerListener *listener )
tomwalters@509: 	{
tomwalters@509: 		timerListeners_.push_back( AttachedTimerListener( periodMilliseconds, periodMilliseconds, listener ) );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509: 	void AttachPeriodicTimerListener( int initialDelayMilliseconds, int periodMilliseconds, TimerListener *listener )
tomwalters@509: 	{
tomwalters@509: 		timerListeners_.push_back( AttachedTimerListener( initialDelayMilliseconds, periodMilliseconds, listener ) );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void DetachPeriodicTimerListener( TimerListener *listener )
tomwalters@509: 	{
tomwalters@509: 		std::vector< AttachedTimerListener >::iterator i = timerListeners_.begin();
tomwalters@509: 		while( i != timerListeners_.end() ){
tomwalters@509: 			if( i->listener == listener )
tomwalters@509: 				break;
tomwalters@509: 			++i;
tomwalters@509: 		}
tomwalters@509: 
tomwalters@509: 		assert( i != timerListeners_.end() );
tomwalters@509: 
tomwalters@509: 		timerListeners_.erase( i );
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void Run()
tomwalters@509: 	{
tomwalters@509: 		break_ = false;
tomwalters@509: 
tomwalters@509: 		// prepare the window events which we use to wake up on incoming data
tomwalters@509: 		// we use this instead of select() primarily to support the AsyncBreak() 
tomwalters@509: 		// mechanism.
tomwalters@509: 
tomwalters@509: 		std::vector<HANDLE> events( socketListeners_.size() + 1, 0 );
tomwalters@509: 		int j=0;
tomwalters@509: 		for( std::vector< std::pair< PacketListener*, UdpSocket* > >::iterator i = socketListeners_.begin();
tomwalters@509: 				i != socketListeners_.end(); ++i, ++j ){
tomwalters@509: 
tomwalters@509: 			HANDLE event = CreateEvent( NULL, FALSE, FALSE, NULL );
tomwalters@509: 			WSAEventSelect( i->second->impl_->Socket(), event, FD_READ ); // note that this makes the socket non-blocking which is why we can safely call RecieveFrom() on all sockets below
tomwalters@509: 			events[j] = event;
tomwalters@509: 		}
tomwalters@509: 
tomwalters@509: 
tomwalters@509: 		events[ socketListeners_.size() ] = breakEvent_; // last event in the collection is the break event
tomwalters@509: 
tomwalters@509: 		
tomwalters@509: 		// configure the timer queue
tomwalters@509: 		double currentTimeMs = GetCurrentTimeMs();
tomwalters@509: 
tomwalters@509: 		// expiry time ms, listener
tomwalters@509: 		std::vector< std::pair< double, AttachedTimerListener > > timerQueue_;
tomwalters@509: 		for( std::vector< AttachedTimerListener >::iterator i = timerListeners_.begin();
tomwalters@509: 				i != timerListeners_.end(); ++i )
tomwalters@509: 			timerQueue_.push_back( std::make_pair( currentTimeMs + i->initialDelayMs, *i ) );
tomwalters@509: 		std::sort( timerQueue_.begin(), timerQueue_.end(), CompareScheduledTimerCalls );
tomwalters@509: 
tomwalters@509: 		const int MAX_BUFFER_SIZE = 4098;
tomwalters@509: 		char *data = new char[ MAX_BUFFER_SIZE ];
tomwalters@509: 		IpEndpointName remoteEndpoint;
tomwalters@509: 
tomwalters@509: 		while( !break_ ){
tomwalters@509: 
tomwalters@509: 			double currentTimeMs = GetCurrentTimeMs();
tomwalters@509: 
tomwalters@509:             DWORD waitTime = INFINITE;
tomwalters@509:             if( !timerQueue_.empty() ){
tomwalters@509: 
tomwalters@509:                 waitTime = (DWORD)( timerQueue_.front().first >= currentTimeMs
tomwalters@509:                             ? timerQueue_.front().first - currentTimeMs
tomwalters@509:                             : 0 );
tomwalters@509:             }
tomwalters@509: 
tomwalters@509: 			DWORD waitResult = WaitForMultipleObjects( (DWORD)socketListeners_.size() + 1, &events[0], FALSE, waitTime );
tomwalters@509: 			if( break_ )
tomwalters@509: 				break;
tomwalters@509: 
tomwalters@509: 			if( waitResult != WAIT_TIMEOUT ){
tomwalters@509: 				for( int i = waitResult - WAIT_OBJECT_0; i < (int)socketListeners_.size(); ++i ){
tomwalters@509: 					int size = socketListeners_[i].second->ReceiveFrom( remoteEndpoint, data, MAX_BUFFER_SIZE );
tomwalters@509: 					if( size > 0 ){
tomwalters@509: 						socketListeners_[i].first->ProcessPacket( data, size, remoteEndpoint );
tomwalters@509: 						if( break_ )
tomwalters@509: 							break;
tomwalters@509: 					}
tomwalters@509: 				}
tomwalters@509: 			}
tomwalters@509: 
tomwalters@509: 			// execute any expired timers
tomwalters@509: 			currentTimeMs = GetCurrentTimeMs();
tomwalters@509: 			bool resort = false;
tomwalters@509: 			for( std::vector< std::pair< double, AttachedTimerListener > >::iterator i = timerQueue_.begin();
tomwalters@509: 					i != timerQueue_.end() && i->first <= currentTimeMs; ++i ){
tomwalters@509: 
tomwalters@509: 				i->second.listener->TimerExpired();
tomwalters@509: 				if( break_ )
tomwalters@509: 					break;
tomwalters@509: 
tomwalters@509: 				i->first += i->second.periodMs;
tomwalters@509: 				resort = true;
tomwalters@509: 			}
tomwalters@509: 			if( resort )
tomwalters@509: 				std::sort( timerQueue_.begin(), timerQueue_.end(), CompareScheduledTimerCalls );
tomwalters@509: 		}
tomwalters@509: 
tomwalters@509: 		delete [] data;
tomwalters@509: 
tomwalters@509: 		// free events
tomwalters@509: 		j = 0;
tomwalters@509: 		for( std::vector< std::pair< PacketListener*, UdpSocket* > >::iterator i = socketListeners_.begin();
tomwalters@509: 				i != socketListeners_.end(); ++i, ++j ){
tomwalters@509: 
tomwalters@509: 			WSAEventSelect( i->second->impl_->Socket(), events[j], 0 ); // remove association between socket and event
tomwalters@509: 			CloseHandle( events[j] );
tomwalters@509: 			unsigned long enableNonblocking = 0;
tomwalters@509: 			ioctlsocket( i->second->impl_->Socket(), FIONBIO, &enableNonblocking );  // make the socket blocking again
tomwalters@509: 		}
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void Break()
tomwalters@509: 	{
tomwalters@509: 		break_ = true;
tomwalters@509: 	}
tomwalters@509: 
tomwalters@509:     void AsynchronousBreak()
tomwalters@509: 	{
tomwalters@509: 		break_ = true;
tomwalters@509: 		SetEvent( breakEvent_ );
tomwalters@509: 	}
tomwalters@509: };
tomwalters@509: 
tomwalters@509: 
tomwalters@509: 
tomwalters@509: SocketReceiveMultiplexer::SocketReceiveMultiplexer()
tomwalters@509: {
tomwalters@509: 	impl_ = new Implementation();
tomwalters@509: }
tomwalters@509: 
tomwalters@509: SocketReceiveMultiplexer::~SocketReceiveMultiplexer()
tomwalters@509: {	
tomwalters@509: 	delete impl_;
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::AttachSocketListener( UdpSocket *socket, PacketListener *listener )
tomwalters@509: {
tomwalters@509: 	impl_->AttachSocketListener( socket, listener );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::DetachSocketListener( UdpSocket *socket, PacketListener *listener )
tomwalters@509: {
tomwalters@509: 	impl_->DetachSocketListener( socket, listener );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::AttachPeriodicTimerListener( int periodMilliseconds, TimerListener *listener )
tomwalters@509: {
tomwalters@509: 	impl_->AttachPeriodicTimerListener( periodMilliseconds, listener );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::AttachPeriodicTimerListener( int initialDelayMilliseconds, int periodMilliseconds, TimerListener *listener )
tomwalters@509: {
tomwalters@509: 	impl_->AttachPeriodicTimerListener( initialDelayMilliseconds, periodMilliseconds, listener );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::DetachPeriodicTimerListener( TimerListener *listener )
tomwalters@509: {
tomwalters@509: 	impl_->DetachPeriodicTimerListener( listener );
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::Run()
tomwalters@509: {
tomwalters@509: 	impl_->Run();
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::RunUntilSigInt()
tomwalters@509: {
tomwalters@509: 	assert( multiplexerInstanceToAbortWithSigInt_ == 0 ); /* at present we support only one multiplexer instance running until sig int */
tomwalters@509: 	multiplexerInstanceToAbortWithSigInt_ = this;
tomwalters@509: 	signal( SIGINT, InterruptSignalHandler );
tomwalters@509: 	impl_->Run();
tomwalters@509: 	signal( SIGINT, SIG_DFL );
tomwalters@509: 	multiplexerInstanceToAbortWithSigInt_ = 0;
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::Break()
tomwalters@509: {
tomwalters@509: 	impl_->Break();
tomwalters@509: }
tomwalters@509: 
tomwalters@509: void SocketReceiveMultiplexer::AsynchronousBreak()
tomwalters@509: {
tomwalters@509: 	impl_->AsynchronousBreak();
tomwalters@509: }
tomwalters@509: