说明：  RTP/RTCP 协议介绍 Real-Time Transport Control Protocol（实时传输控制协议） 监控RTP的服务质量和网络拥塞程度 收集在一个RTP会话中参与者的状态 跟踪RTP源（同步音频视频流，SSRC有可能变化） rtp Real-Time Transport Protocol（实时传输协议） RTP的设计主要是为了多媒体多方会议的需要 提供端对端的实时数据传输服务，RTP使用的传输层协议一般为UDP。 不提供机制确保数据的间隔发送 不提供机制保证QoS
(RTP/RTCP protocol Introduce Real-Time Transport Control Protocol (Real-time Transport Control Protocol) RTP monitoring service quality and network congestion degree of collection in a RTP session participants to track the status of RTP sources (synchronous audio and video streaming, SSRC may change) rtpReal-Time Transport Protocol (RTP) RTP is mainly designed for multimedia multi-session end-to-end need to provide real-time data transmission services, RTP Transport Protocol for use in general for UDP. Do not provide mechanisms to ensure that the interval to send data do not provide mechanisms to guarantee the QoS)