数据的编码采用了曼彻斯特编码格式，每帧数据包括同步头、有效数据位和冗余校验位三部分。

Manchester code was used in data coding, each frame of data included synchronous head, valid data bits and cyclic redundancy parity bits.

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现在开始每条消息头解释消息将包含多少数据，和一个校验和。

Now start every message with a header explaining how much data the message will contain, and a checksum.

youdao

然而IP协议本身是不安全的，它只用16比特的校验和来验证IP报文头的完整性。

But IP protocol is not secure, there is only a 16 bits checksum in IP header to validate data integrity.

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