[in] When calling this method on an external socket, this
sockaddr structure should contain the target
address for a UDP datagram. When calling this method on an internal
socket, this parameter should contain the address of the datagram
source. This is typically the Internet address from which the
pIOBuffer packet originated. That is, the internal socket is
associated with the Internet address of the pIOBuffer
packet.
AddressLength
[in] Length, in bytes, of the Address parameter.
pIFWXIOCompletion
[in] Pointer to an IFWXIOCompletion interface that
receives a notification when the sendto operation is completed. Set
this parameter to NULL if notification is not required.
UserData
[in] An opaque value to pass to the IFWXIOCompletion::CompleteAsyncIO
notification method. This parameter provides a context to the
notification.
Return Values
This method returns S_OK if the call is successful; otherwise,
it returns an error code.
To receive a notification when the sendto operation is
completed, specify an IFWXIOCompletion interface
pointer in the pIFWXIOCompletion parameter.
Requirements
Server: Requires Windows Server 2003 or
Windows 2000. Version: Requires Internet Security and Acceleration
Server 2004. Header: Declared in Wspfwext.idl.