Design and Implementation of Windows Service Client Based on HTTP

In some cases, we need to perform certain functions after computer is started, but not logged. This is the role of the service program. This article discusses the establishment of an installation, operation, start and stop function of the windows service program process and associated communication protocol implementations. Before logged in the case of the operating system, the function of the service program is to achieve communications and data exchange with the remote server. Communication protocol consists request mainly based on http protocol and text file to receive and resolve in two parts based on XML. In this paper, it is beginning with architecture design presentation, introduced the concept of service program and process design, based on http protocol session design and XML parsing, and made some analysis of the whole structure.