public EndpointI bind()
{
#if !SILVERLIGHT
if (Network.isMulticast((IPEndPoint)_addr))
{
Network.setReuseAddress(_fd, true);
_mcastAddr = (IPEndPoint)_addr;
if (AssemblyUtil.platform_ == AssemblyUtil.Platform.Windows)
{
//
// Windows does not allow binding to the mcast address itself
// so we bind to INADDR_ANY (0.0.0.0) instead. As a result,
// bi-directional connection won't work because the source
// address won't the multicast address and the client will
// therefore reject the datagram.
//
if (_addr.AddressFamily == AddressFamily.InterNetwork)
{
_addr = new IPEndPoint(IPAddress.Any, _port);
}
else
{
_addr = new IPEndPoint(IPAddress.IPv6Any, _port);
}
}
_addr = Network.doBind(_fd, _addr);
if (_port == 0)
{
_mcastAddr.Port = ((IPEndPoint)_addr).Port;
}
Network.setMcastGroup(_fd, _mcastAddr.Address, _mcastInterface);
}
else
{
if (AssemblyUtil.platform_ != AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow re-using
// the socket even if it's in the TIME_WAIT state. On
// Windows, this doesn't appear to be necessary and
// enabling SO_REUSEADDR would actually not be a good
// thing since it allows a second process to bind to an
// address even it's already bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
Network.setReuseAddress(_fd, true);
}
_addr = Network.doBind(_fd, _addr);
}
#endif
_bound = true;
_endpoint = _endpoint.endpoint(this);
return(_endpoint);
}
public bool startWrite(Buffer buf, AsyncCallback callback, object state, out bool completed)
{
Debug.Assert(_fd != null && _writeEventArgs != null);
if (_state == StateConnectPending)
{
completed = false;
_writeCallback = callback;
try
{
EndPoint addr = _proxy != null?_proxy.getAddress() : _addr;
if (_sourceAddr != null)
{
Network.doBind(_fd, _sourceAddr);
}
_writeEventArgs.RemoteEndPoint = addr;
_writeEventArgs.UserToken = state;
return(!_fd.ConnectAsync(_writeEventArgs));
}
catch (Exception ex)
{
throw new Ice.SocketException(ex);
}
}
int packetSize = getSendPacketSize(buf.b.remaining());
try
{
_writeCallback = callback;
_writeEventArgs.UserToken = state;
_writeEventArgs.SetBuffer(buf.b.rawBytes(), buf.b.position(), packetSize);
bool completedSynchronously = !_fd.SendAsync(_writeEventArgs);
completed = packetSize == buf.b.remaining();
return(completedSynchronously);
}
catch (SocketException ex)
{
if (Network.connectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
catch (ObjectDisposedException ex)
{
throw new Ice.ConnectionLostException(ex);
}
}
public virtual EndpointI listen()
{
try
{
_addr = Network.doBind(_fd, _addr);
Network.doListen(_fd, _backlog);
}
catch (SystemException)
{
_fd = null;
throw;
}
_endpoint = _endpoint.endpoint(this);
return(_endpoint);
}
public EndpointI bind()
{
Debug.Assert(_fd != null);
if (Network.isMulticast((IPEndPoint)_addr))
{
Network.setReuseAddress(_fd, true);
_mcastAddr = (IPEndPoint)_addr;
if (AssemblyUtil.isWindows)
{
//
// Windows does not allow binding to the mcast address itself
// so we bind to INADDR_ANY (0.0.0.0) instead. As a result,
// bi-directional connection won't work because the source
// address won't the multicast address and the client will
// therefore reject the datagram.
//
if (_addr.AddressFamily == AddressFamily.InterNetwork)
{
_addr = new IPEndPoint(IPAddress.Any, _port);
}
else
{
_addr = new IPEndPoint(IPAddress.IPv6Any, _port);
}
}
_addr = Network.doBind(_fd, _addr);
if (_port == 0)
{
_mcastAddr.Port = ((IPEndPoint)_addr).Port;
}
Debug.Assert(_mcastInterface != null);
Network.setMcastGroup(_fd, _mcastAddr.Address, _mcastInterface);
}
else
{
_addr = Network.doBind(_fd, _addr);
}
_bound = true;
Debug.Assert(_endpoint != null);
_endpoint = _endpoint.endpoint(this);
return(_endpoint);
}
//
// Only for use by UdpEndpoint.
//
internal UdpTransceiver(Instance instance, string host, int port, string mcastInterface, bool connect)
{
_traceLevels = instance.traceLevels();
_logger = instance.initializationData().logger;
_stats = instance.initializationData().stats;
_state = connect ? StateNeedConnect : StateNotConnected;
_incoming = true;
try
{
_addr = Network.getAddressForServer(host, port, instance.protocolSupport(), instance.preferIPv6());
#if ICE_SOCKET_ASYNC_API
_readEventArgs = new SocketAsyncEventArgs();
_readEventArgs.RemoteEndPoint = _addr;
_readEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(ioCompleted);
_writeEventArgs = new SocketAsyncEventArgs();
_writeEventArgs.RemoteEndPoint = _addr;
_writeEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(ioCompleted);
#endif
_fd = Network.createServerSocket(true, _addr.AddressFamily, instance.protocolSupport());
setBufSize(instance);
#if !SILVERLIGHT
Network.setBlock(_fd, false);
#endif
if (_traceLevels.network >= 2)
{
string s = "attempting to bind to udp socket " + Network.addrToString(_addr);
_logger.trace(_traceLevels.networkCat, s);
}
#if !SILVERLIGHT
if (Network.isMulticast((IPEndPoint)_addr))
{
Network.setReuseAddress(_fd, true);
_mcastAddr = (IPEndPoint)_addr;
if (AssemblyUtil.platform_ == AssemblyUtil.Platform.Windows)
{
//
// Windows does not allow binding to the mcast address itself
// so we bind to INADDR_ANY (0.0.0.0) instead. As a result,
// bi-directional connection won't work because the source
// address won't the multicast address and the client will
// therefore reject the datagram.
//
if (_addr.AddressFamily == AddressFamily.InterNetwork)
{
_addr = new IPEndPoint(IPAddress.Any, port);
}
else
{
_addr = new IPEndPoint(IPAddress.IPv6Any, port);
}
}
_addr = Network.doBind(_fd, _addr);
if (port == 0)
{
_mcastAddr.Port = ((IPEndPoint)_addr).Port;
}
Network.setMcastGroup(_fd, _mcastAddr.Address, mcastInterface);
}
else
{
if (AssemblyUtil.platform_ != AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow
// re-using the socket even if it's in the TIME_WAIT
// state. On Windows, this doesn't appear to be
// necessary and enabling SO_REUSEADDR would actually
// not be a good thing since it allows a second
// process to bind to an address even it's already
// bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would
// probably be better but it's only supported by recent
// Windows versions (XP SP2, Windows Server 2003).
//
Network.setReuseAddress(_fd, true);
}
_addr = Network.doBind(_fd, _addr);
}
#endif
if (_traceLevels.network >= 1)
{
StringBuilder s = new StringBuilder("starting to receive udp packets\n");
s.Append(ToString());
List <string> interfaces = Network.getHostsForEndpointExpand(
Network.endpointAddressToString(_addr), instance.protocolSupport(), true);
if (interfaces.Count != 0)
{
s.Append("\nlocal interfaces: ");
s.Append(String.Join(", ", interfaces.ToArray()));
}
_logger.trace(_traceLevels.networkCat, s.ToString());
}
}
catch (Ice.LocalException)
{
_fd = null;
throw;
}
}