Preserving State on the World Wide Web Using Dynamic Argument Embedding.pdfVIP

Preserving State on the World Wide Web Using Dynamic Argument Emb edding Arun Iyengar IBM Research Division T J Watson Research Center P O Box Yorktown Heights NY Abstract The HTTP proto col which is used for communicating over the World Wide Web is stateless every request from a client to a server is treated indep endently We have develop ed a new metho d for pre serving state on the World Wide Web known as dynamic argument emb edding The technique has advantages over HTML forms and Netscap e co okies which are two commonly used state preservation techniques Unlike Netscap e co okies dynamic argument emb edding works with all browsers and servers supp orting the HTTP proto col Our metho d can b e generalized to other situations where it is necessary to dynamically mo dify or monitor HTML pages b efore they are received by a browser Index Terms World Wide Web state dynamic argument emb edding co okies HTML forms HTTP Intro duction The Hyp ertext Transfer Proto col HTTP is stateless Every request from a client to a server is treated indep endently The server do esnt maintain information from previous connections for future connections However there are situations where it is essential to maintain state information from previous interactions b etween a client and a server This pap er presents a new metho d called dynamic argument embedding for maintaining state information over the World Wide Web which has key advantages over existing metho ds In our metho d and in existing metho ds state information is represented b