UdpSingleSourceMulticastClient.EndReceiveFromSource Method (IAsyncResult, Int32)

.NET Framework (current version)
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.

Exception Condition

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
Available since 4.5
Available since 4.0
Windows Phone Silverlight
Available since 7.1
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