关键词: 无线 中间件 重连 断接

Abstract:

Traditional middleware cannot satisfy the requirements of applications in wireless environments. Researches on the mechanisms of extending traditional middleware and making it usable in wireless environments become hot. First, we analyze the disconnection in wireless environments and present two different disconnection concepts： disconnection and temporary disconnection. Second, we present a FRTD （Fast Reconnect for Temporary Disconnection） mechan nism in wireless environments. FRTD implements fast reconnection through giving every client a unique ID and caching the results on the server side. Finally, we extend the GIOP protocol through adding a session ID in the service context of the GIOP protocol, and implement FRTD in the ORB kernel. The results and the application prove the efficiency of FRTD. FRTD also applies to the other communication middleware.

Key words: wireless, middleware, reconnect, disconnection