除了这些强制性的协议，设备制造商可能会选择支持更多的通信协议，如数据包或者套接字。

In addition to these mandated protocols, a device manufacturer can choose to support additional communication protocols such as datagrams or sockets.

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ud p_ resvspace—这个值应该大于udp_sendpsace，因为它需要处理每套接字的、尽可能多的同步udp数据包。

Udp_resvspace -this value should be greater than udp_sendpsace, because it needs to handle as many simultaneous udp packets per socket as it can.

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设置或者清除套接字的SO_BROADCAST(广播)选项。当该设置生效时，UDP数据包将被发送至本地网络接口的广播地址。

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

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