UdpClient.DropMulticastGroup Method (IPAddress)
Leaves a multicast group.
Assembly: System (in System.dll)
The underlying Socket has been closed.
An error occurred when accessing the socket. See the Remarks section for more information.
The IP address is not compatible with the AddressFamily value that defines the addressing scheme of the socket.
multicastAddr is null.
The DropMulticastGroup method withdraws the UdpClient from the multicast group identified by the specified IPAddress. After calling the DropMulticastGroup method, the underlying Socket sends an Internet Group Management Protocol (IGMP) packet to the router, removing the router from the multicast group. After a UdpClient withdraws from the group, it will no longer be able to receive datagrams sent to that group.
The following example demonstrates how to drop a multicast group by providing a multicast address.
// Send data to ClientTarget. Console.WriteLine("\nThe ClientOriginator sent:\n"); Send.OriginatorSendData(clientOriginator, m_ClientTargetdest); // Receive data from ClientTarget Ret = Receive.ReceiveUntilStop(clientOriginator); // Stop the ClientTarget thread m_t.Abort(); // Abandon the multicast group. clientOriginator.DropMulticastGroup(m_GrpAddr);