Articolo
11/18/2011

UdpAnySourceMulticastClient Class

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A client receiver for multicast traffic from any source, also known as Any Source Multicast (ASM) or Internet Standard Multicast (ISM).

Inheritance Hierarchy

System.Object
System.Net.Sockets.UdpAnySourceMulticastClient

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

Syntax

'Declaration
Public Class UdpAnySourceMulticastClient _
    Implements IDisposable

public class UdpAnySourceMulticastClient : IDisposable

The UdpAnySourceMulticastClient type exposes the following members.

Constructors

	Name	Description
	UdpAnySourceMulticastClient	Creates a new UdpAnySourceMulticastClient UDP client that can subscribe to a group address and receive datagrams from any source.

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Properties

	Name	Description
	MulticastLoopback	Gets or sets a value that specifies whether outgoing multicast packets are delivered to the sending application.
	ReceiveBufferSize	Gets or sets the size, in bytes, of the receive buffer of the Socket used for multicast receive operations on this UdpAnySourceMulticastClient instance.
	SendBufferSize	Gets or sets the size, in bytes, of the send buffer of the Socket used for multicast send operations on this UdpAnySourceMulticastClient instance.

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Methods

	Name	Description
	BeginJoinGroup	Binds the socket and begins a join operation to the multicast group to allow datagrams to be received from any group participant.
	BeginReceiveFromGroup	Begins the operation of receiving a packet from the joined multicast group and invokes the specified callback when a packet has arrived on the group from any sender.
	BeginSendTo	Begins the operation of sending a unicast packet to the specified destination.
	BeginSendToGroup	Begins the operation of sending a packet to a joined multicast group and invokes the specified callback when a packet has been sent to the group.
	BlockSource	Blocks a source so that multicast packets originating from it are no longer received.
	Dispose	Leaves the multicast group and releases all resources used by the current instance of the UdpAnySourceMulticastClient class and the underlying Socket.
	EndJoinGroup	Completes the asynchronous join group operation to a multicast group.
	EndReceiveFromGroup	Completes the asynchronous operation of receiving a packet from the joined multicast group and provides the information received.
	EndSendTo	Completes the operation of sending a unicast packet to the specified destination.
	EndSendToGroup	Completes the operation of sending a packet to a multicast group.
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) In Silverlight for Windows Phone, this member is overridden by Finalize().
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	UnblockSource	Unblocks a source that was previously blocked by a call to the BlockSource method so that multicast packets originating from it can be received.

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Remarks

The multicast group address must be known, but any group participant may send to the group. Sending sources may be discovered by examining the address of packets received from calls to the BeginReceiveFromGroup method. The source address of the sender is returned by the EndReceiveFromGroup method. These characteristics make any source multicast useful for peer discovery and peer to peer communication.

In addition to sending multicast data to and receiving multicast data from the multicast group, the client can also send unicast data to sources it has received multicast data from. This allows for directed messaging and is useful for protocols which need to pass quality of service or control information back to a source.

To receive multicast from a single source where the address is known in advance, such as in broadcast and content delivery scenarios, see the UdpSingleSourceMulticastClient class.

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.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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