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The state of the SO_BROADCAST socket option determines whether broadcast messages can be transmitted over a datagram socket. This socket option applies only to datagram sockets.
To set the state of this socket option, a WSK application calls the WskControlSocket function with the following parameters.
| Parameter | Value |
|---|---|
RequestType |
WskSetOption |
ControlCode |
SO_BROADCAST |
Level |
SOL_SOCKET |
InputSize |
sizeof(ULONG) |
InputBuffer |
A pointer to a ULONG-typed variable that contains the value for the new state of the socket option: 0: Do not allow broadcast messages 1: Allow broadcast messages |
OutputSize |
0 |
OutputBuffer |
NULL |
OutputSizeReturned |
NULL |
To retrieve the state of this socket option, a WSK application calls the WskControlSocket function with the following parameters.
| Parameter | Value |
|---|---|
RequestType |
WskGetOption |
ControlCode |
SO_BROADCAST |
Level |
SOL_SOCKET |
InputSize |
0 |
InputBuffer |
NULL |
OutputSize |
sizeof(ULONG) |
OutputBuffer |
A pointer to a ULONG-typed variable that receives the value of the state of the socket option: 0: Broadcast messages are not allowed 1: Broadcast messages are allowed |
OutputSizeReturned |
NULL |
A WSK application must specify a pointer to an IRP when calling the WskControlSocket function to set or retrieve the state of the SO_BROADCAST socket option.
The default state of this socket option is that broadcast messages are not allowed.
Requirements
Version |
Available in Windows Vista and later versions of the Windows operating systems. |
Header |
Ws2def.h (include Wsk.h) |