实现手机端web_rtc和后台的音视频通信.这个是源码修改后的项目.java端的代码可以在网上找node.js开发的webrtc源码. 该手机端是webscoket和http进行通信的-Achieve mobile terminal web_rtc and background audio and video communications. Background code can be found on the Internet webrtc node.js source development