实时传送协议（Real-time Transport Protocol或简写RTP，也可以写成RTTP）是一个网络传输协议，RTP协议详细说明了在互联网上传递音频和视频的标准数据包格式。它一开始被设计为一个多播协议，但后来被用在很多单播应用中。RTP协议常用于流媒体系统（配合RTCP协议或者RTSP协议）。JRTPLIB 是一个用C++语言实现的RTP库，包括UDP通讯。
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