/// <summary>
/// Constructor that binds this object instance to an IPEndPoint. If you need to change IPEndPoint dynamically, Dispose and recreate a new object.
/// </summary>
/// <param name="endPoint">IPEndPoint where we should be listening for IP Multicast packets.</param>
/// <param name="TimeoutMilliseconds">Milliseconds before lack of a packet == a Network Timeout</param>
/// <example>
/// ...
/// MulticastUdpListener mcListener = new MulticastUdpListener(endPoint1);
/// mcListener.Receive(packetBuffer);
/// mcListener.Displose();
///
/// MulticastUdpListener mcListener = new MulticastUdpListener(endPoint2);
/// mcListener.Receive(packetBuffer);
/// mcListener.Displose();
///
/// mcListener = null;
/// ...
/// </example>
public UdpListener(System.Net.IPEndPoint endPoint, int timeoutMilliseconds)
{
LstSocks.Socket.SockInterfacePair sip = LstSocks.Socket.GetSharedSocket(endPoint);
this.sock = sip.sock;
this.externalInterface = sip.extInterface;
this.ep = endPoint;
lock (sip)
{
if (!sip.Initialized)
{
try
{
// Set the timeout on the socket
if (timeoutMilliseconds > 0)
{
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeoutMilliseconds);
}
// Set the socket to send & receive from this endpoint
sock.Bind(new IPEndPoint(externalInterface, endPoint.Port));
// Make room for 80 packets plus some overhead
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 1500 * 80);
if (Utility.IsMulticast(endPoint.Address))
{
if (endPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
// Join the IPv6 Multicast group
sock.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership,
new IPv6MulticastOption(endPoint.Address));
}
else
{
// Join the IPv4 Multicast group
sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership,
new MulticastOption(endPoint.Address));
}
}
sip.Initialized = true;
}
catch
{
this.Dispose();
throw;
}
}
}
}
/// <summary>
/// Common initialization for unicast (reflector) and multicast sockets
/// </summary>
/// <param name="port"> The local port number on which packets will be received. This can be
/// zero to indicate a "don't care" port should be selected.
/// </param>
/// <param name="timeoutMilliseconds"></param>
private void InitializeSocket(int port, int timeoutMilliseconds)
{
// Set the timeout on the socket
if (timeoutMilliseconds > 0)
{
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeoutMilliseconds);
}
// Set the socket to send & receive from this endpoint
sock.Bind(new IPEndPoint(externalInterface, port));
// Make room for 80 packets plus some overhead
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 1500 * 80);
}
/// <summary>
/// Constructor that binds this object instance to an IPEndPoint. If you need to change IPEndPoint dynamically, Dispose and recreate a new object.
/// </summary>
/// <param name="endPoint">IPEndPoint where we should be listening for IP Multicast packets.</param>
/// <param name="TimeoutMilliseconds">Milliseconds before lack of a packet == a Network Timeout</param>
/// <example>
/// ...
/// MulticastUdpListener mcListener = new MulticastUdpListener(endPoint1);
/// mcListener.Receive(packetBuffer);
/// mcListener.Displose();
///
/// MulticastUdpListener mcListener = new MulticastUdpListener(endPoint2);
/// mcListener.Receive(packetBuffer);
/// mcListener.Displose();
///
/// mcListener = null;
/// ...
/// </example>
public UdpListener(System.Net.IPEndPoint endPoint, int timeoutMilliseconds)
{
LstSocks.Socket.SockInterfacePair sip = LstSocks.Socket.GetSharedSocket(endPoint);
this.sock = sip.sock;
this.externalInterface = sip.extInterface;
this.ep = endPoint;
lock(sip)
{
if(!sip.Initialized)
{
try
{
// Set the timeout on the socket
if( timeoutMilliseconds > 0 )
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeoutMilliseconds);
// Set the socket to send & receive from this endpoint
sock.Bind(new IPEndPoint(externalInterface,endPoint.Port));
// Make room for 80 packets plus some overhead
sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 1500 * 80);
if(Utility.IsMulticast(endPoint.Address))
{
if(endPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
// Join the IPv6 Multicast group
sock.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership,
new IPv6MulticastOption(endPoint.Address));
}
else
{
// Join the IPv4 Multicast group
sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership,
new MulticastOption(endPoint.Address));
}
}
sip.Initialized = true;
}
catch
{
this.Dispose();
throw;
}
}
}
}
