Subsequently, describes particularly sending and receiving RTP and RTCP packet in server and client.

随后，详细描述了服务端和客户端rtp的打包发送和接收、RTCP报告包的发送和接收。

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A packet will then have an IP header (20 octets), a UDP header (8 octets), and an RTP header (12 octets) for a total of 40 octets.

整个IP分组包括一个20字节的IP报头，一个8字节的UDP报头和一个12字节的RTP报头，报头总长度为40个字节。

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