GSRP——一种支持连接恢复和会话移动的消息传输协议  

GSRP—A Message Transporting Protocol Supporting Connection Resumption and Session Migration

作　　者：刘东华[1] 侯志强[1] 

机构地区：[1]中国科学院计算技术研究所软件研究室,北京100080

出　　处：《计算机研究与发展》2004年第12期2095-2100,共6页Journal of Computer Research and Development

基　　金：国家自然科学基金委员会国家杰出青年科学基金项目(6992520);国家"八六三"高技术研究发展计划基金项目(2002AA104310);中国科学院海外杰出青年学者基金项目(20014010)

摘　　要：从网格用户环境等场景和移动网络特点出发 ,归纳出网络协议中持久性、全局性、松耦合、内容和传输分离的原则 ,并提出支持连接恢复和会话移动的网格服务请求协议 (GSRP) GSRP采用松耦合的应用会话层和消息传输层两层结构 ,分别负责消息内容及应用之间消息交互和消息封包及传输 全局性的持久会话句柄为不同主机和不同应用之间实现网络会话的协同和移动提供了开发接口 ,软连接在持久会话句柄和底层网络链路之间建立映射 ,完成消息的传输 单边操作和延迟容忍技术被用在数据通信和状态管理中 ,简化了应用开发和维护 给出GSRP的设计和实现 ,结果表明GSRP在没有增加大的额外开销的同时 ,获得了休眠、移动和对底层网络的适应能力 。The principles of persistence, globalization, loosely-coupling and the separation of content from transporting are concluded from scenarios such as grid user environment and the characters of mobile network, and the Grid Service Request Protocol to support connection resumption and session migration is proposed.The GSRP consists of loosely-coupled application session layer and message transporting layer, which manages the content and interaction of messages and the packing and transporting of packets separately.The global persistent session handle provides programming interfaces for the coordination and mobility among different hosts or different processes, and the soft connection links persistent session handles and the underlying network channels to complete the message transporting.Unilateral operations and delay-tolerance technologies are used in the data communication and status management simplifying the development and maintenance of applications.The design and implementation of GSRP are also presented, which shows that the applications with GSRP functions can result in the abilities of hibernation, mobility and adaptation to the underlying network without obvious overheads, and that the GSRP can meet the networking requirements of the concerned new applications.

关 键 词：网格 网络 移动计算 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]