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Socket.DuplicateAndClose Method

Duplicates the socket reference for the target process, and closes the socket for this process.

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

public SocketInformation DuplicateAndClose(
	int targetProcessId
)

Parameters

targetProcessId
Type: System.Int32

The ID of the target process where a duplicate of the socket reference is created.

Return Value

Type: System.Net.Sockets.SocketInformation
The socket reference to be passed to the target process.

ExceptionCondition
SocketException

targetProcessID is not a valid process id.

-or-

Duplication of the socket reference failed.

The target process should use Socket to create the duplicate socket instance.

If you call the Socket constructor multiple times with the same byte array as the argument for each call, you will create multiple managed Socket instances with the same underlying socket. This practice is strongly discouraged.

If the process creating the socket uses asynchronous methods (BeginReceive or BeginSend), the process must first set the UseOnlyOverlappedIO property to true; otherwise, the socket is bound to the completion port of the creating process, which may cause an ArgumentNullException to be thrown on the target process.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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