Mobile Internet and WAP
Topics to be covered WWW Programming Model WAP Programming Model WAP Gateway
WWW Programming Model
WWW Programming Model Standard Naming model: Content types: Languages: URL Content types: Specific Types like jpg Languages: Scripts: Client Side or Server Side Standard Protocols: HTTP, TCP/IP
WAP Programming Model Wireless Application Protocol Open and Global specification An application communication protocol Used to access services and information Designed for micro browsers Uses mark-up language WML (not HTML) defined as an XML application OS independent
WAP Programming Model
WAP Programming Model Similar to WWW but needs enhancements Slow CPU Low Bandwidth Less memory and small screen size High Latency Current Version : WAP 2.0
WAP Protocol Stack
WAP Protocol Stack WAE includes a micro-browser which provides WML WML script WTA Content formats WML : Tag language, allows text portion of Web Pages to be presented on cellular phone/PDA
WAP GateWay Three kind of servers: Duties Origin Server Proxy Server Header Translation Push Operation Content Compilation
Wap GateWay