An intelligent network agent intercepts transactions between clients and servers to perform Distributed Information Logistics Services (DILS) functions such as automatically retrieving updated files from remote servers and delivering them to local client programs. For example, HTTP clients and HTTPD...http://www.google.com.tw/patents/US6029175?utm_source=gb-gplus-share專利 US6029175 - Automatic retrieval of changed files by a network software agent
Automatic retrieval of changed files by a network software agent