|
Summary of New Socket Ioctl Opcodes
The new socket ioctl opcodes for Windows Sockets 2 are summarized in the
following table. See WSAIoctl for detailed information on these opcodes. The WSAIoctl function also supports all the ioctl opcodes specified in ioctlsocket. Theother new protocol-specific ioctl opcodes can be found in the
Protocol-specific Annex (a separate document included with the Win32 SDK).
Opcode
| Input Type
| Output Type
| Meaning
| SIO_ASSOCIATE
_HANDLE
| companion API dependent
| <not used>
| Associate the socket with the specified handle of a companion interface.
| SIO_ENABLE
_CIRCULAR
_QUEUEING
| <not used>
| <not used>
| Circular queuing is enabled.
| SIO_FIND_ROUTE
| struct sockaddr
| <not used>
| Request the route to the specified address to be discovered.
| SIO_FLUSH
| <not used>
| <not used>
| Discard current contents of the sending queue.
| SIO_GET
_BROADCAST
_ADDRESS
| <not used>
| struct sockaddr
| Retrieve the protocol-specific broadcast address to be used in sendto/WSASendTo.
| SIO_GET_QOS
| <not used>
| QOS
| Retrieve current flow specification(s) for the socket.
| SIO_GET_GROUP
_QOS
| <not used>
| QOS
| Retrieve current group flow specification(s) for the group this socket belongs
to.
| SIO_MULTIPOINT
_LOOKBACK
| BOOL
| <not used>
| Control whether data sent in a multipoint session will also be received by the
same socket on the local host.
| SIO_MULTICAST
_SCOPE
| int
| <not used>
| Specify the scope over which multicast transmissions will occur.
| SIO_SET_QOS
| QOS
| <not used>
| Establish new flow specification(s) for the socket.
| SIO_SET_GROUP
_QOS
| QOS
| <not used>
| Establish new group flow specification(s) for the group this socket belongs to.
| SIO_TRANSLATE
_HANDLE
| int
| companion API dependent
| Obtain a corresponding handle for socket s that is valid in the context of a companion interface.
|
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