基于WebRTC的会议服务的研究与实现

发布时间：2018-06-04 00:18

本文选题：WebRTC + 会议服务　；参考：《北京邮电大学》2017年硕士论文

【摘要】：WebRTC (Web Real-Time Communications)技术于不依赖于第三方插件,基于浏览器实现跨平台,具有良好的用户体验、较低的开发成本和标准化等一系列优点,在实时通信、企业管理、远程教育、远程医疗等方面有广泛的应用前景,多方多媒体实时会议是以上应用的一种重要实现方式。本文针对基于WebRTC技术的会议服务进行了研究与实现。在已有的WebRTC系统架构的基础上,通过增加WCSG会议信令网关和Netty会议代理服务器实现用户端与CS会议服务器之间的信令交互,此外还增加了 XMS媒体服务器用于会议多媒体信息的处理。在功能上实现了创建会议、加入会议、退出会议等基本功能,并且通过研究后设计并实现了一些高级会议功能,例如权限角色划分、预约和周期会议、会议时长的控制、语音控制等功能。在CS会议服务器的具体实现上,基于异步非阻塞的MCF框架进行开发,主要分为负责协议接入的底层协议适配模块和负责会议流程管理的上层应用组件模块。在消息交互上需要支持两种协议,一方面以SIP协议与WCSG会议信令网关进行核心流程信令交互,以及使用基于MSML语言的XML消息作为SIP消息体调用XMS媒体服务器的多媒体处理功能,另一方面以TCP协议与Netty会议代理服务器进行会议信息的传递和管理。
[Abstract]:WebRTC Real-Time Communications, which is independent of third party plug-ins, has a series of advantages such as good user experience, low development cost, standardization, etc., in real-time communication, enterprise management, distance education, etc. Telemedicine has a wide range of application prospects, multi-media real-time conference is an important way to achieve the above applications. This paper researches and implements the conference service based on WebRTC technology. On the basis of the existing WebRTC system architecture, the signaling interaction between client and CS conference server is realized by adding WCSG conference signaling gateway and Netty conference proxy server. In addition, the XMS media server is added to process the multimedia information of the conference. Some basic functions, such as creating meeting, joining meeting, exiting meeting and so on, are realized, and some high-level meeting functions are designed and implemented after research, such as privilege role partition, reservation and periodic meeting, control of meeting time, etc. Voice control and other functions. The implementation of CS conference server is based on the asynchronous non-blocking MCF framework. It is mainly divided into the bottom protocol adaptation module which is responsible for protocol access and the upper application component module which is responsible for meeting flow management. Two protocols need to be supported in message interaction. On the one hand, SIP protocol and WCSG conference signaling gateway are used for core process signaling interaction, and XML message based on MSML language is used as SIP message body to call the multimedia processing function of XMS media server. On the other hand, the TCP protocol and the Netty conference proxy server are used to transfer and manage the conference information.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.092

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