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UdpAnySourceMulticastClient.EndReceiveFromGroup Method

.NET Framework 4.5

Note: This API is now obsolete.

Completes the asynchronous operation of receiving a packet from the joined multicast group and provides the information received.

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

[ObsoleteAttribute("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", 
public int EndReceiveFromGroup(
	IAsyncResult result,
	out IPEndPoint source


Type: System.IAsyncResult

The result of the asynchronous receive operation.

Type: System.Net.IPEndPoint

The source endpoint where the packet was received from.

Return Value

Type: System.Int32
Returns Int32.
The length, in bytes, of the message stored in the buffer parameter passed to the BeginReceiveFromGroup method.


result is a null reference (Nothing in Visual Basic).


The multicast group has not yet been joined.


The UdpAnySourceMulticastClient has been disposed.


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

The EndReceiveFromGroup method completes an asynchronous operation to receive a packet from a multicast group.

If there is a socket failure while performing the receive operation, a SocketException is thrown. The error received is specified as a member of the SocketError enumeration.

.NET Framework

Obsolete (does not compile) in 4.5.2 and later

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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