• Article

UdpAnySourceMulticastClient.BlockSource Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Blocks a source so that multicast packets originating from it are no longer received.

Namespace:  System.Net.Sockets
Assembly:  System.Net (in System.Net.dll)

Syntax

'Declaration
<SecuritySafeCriticalAttribute> _
Public Sub BlockSource ( _
    sourceAddress As IPAddress _
)

[SecuritySafeCriticalAttribute]
public void BlockSource(
    IPAddress sourceAddress
)

Parameters

Exceptions

Exception Condition
InvalidOperationException

The multicast group has not yet been joined.
ObjectDisposedException

The UdpAnySourceMulticastClient has been disposed.
SocketException

An error occurred when attempting to access the socket. See the Remarks section for more information.

Remarks

The BlockSource method blocks multicast packets originating from a specified source address from being received. The client must have completed a join to the multicast group.

The sourceAddress parameter may be either an IPv6 or IPv4 address, but the sourceAddress parameter must match the address family of the multicast group that the client joined.

If there is a socket failure while performing the block source operation, a SocketException is thrown. The error received is specified as a member of the System.Net.Sockets.SocketError enumeration.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.