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UdpSingleSourceMulticastClient.EndReceiveFromSource 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 EndReceiveFromSource(
	IAsyncResult result,
	out int sourcePort


Type: System.IAsyncResult

The result of the asynchronous receive operation.

Type: System.Int32

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 BeginReceiveFromSource method.


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


The multicast group has not yet been joined.


The UdpSingleSourceMulticastClient has been disposed.


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

The EndReceiveFromSource method completes an asynchronous operation to receive a packet from a single source in 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 and later

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

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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