socket.setBroadcast(flag)

• flag <boolean>

设置或清除 SO_BROADCAST socket 选项。 当设置为 true, UDP 包可能会被发送到一个本地接口的广播地址。

This method throws EBADF if called on an unbound socket.

• flag <boolean>

Sets or clears the SO_BROADCAST socket option. When set to true, UDP packets may be sent to a local interface's broadcast address.

This method throws EBADF if called on an unbound socket.