Comunicação bidirecional entre cliente e servidor web com Ajax Reverso

Abstract

This study aimed to goals a bibliographic study on techniques and technologies that enable implementation of the Reverse Ajax for bidirectional communication between client and server in WEB applications. The development of WEB technology is related, among other factors, the need to simplify the upgrade and maintenance of the application, however, some applications require constant updating of information as an Electronic Auction, chat , and this constant update, without requiring explicit user can be provided using a feature called reverse Ajax, also known as "Push Technology" Along this work be presented the technologies and tools used, as well as the explanation for each of the three techniques of reverse Ajax. We studied two possible technologies for implementing one of the techniques in one example, the new version of the Java platform WEB - JEE6 (Java Enterprise Edition 6) and the Ajax framework DWR (Direct WEB Remoting). Was chosen as an example chat application, where, when a user sends a message, all other connected users should receive it.