The present invention provides a system, method and apparatus for maintaining a connection between a server and a client by receiving a message, determining whether to store one or more elements of the message, storing the one or more elements of the message when the one or more elements of the message...http://www.google.com.hk/patents/US7673038?utm_source=gb-gplus-share專利 US7673038 - Method, apparatus and system for maintaining connections between computers using connection-oriented protocols
