World Wide Web and Mobility
n Protocol (HTTP, Hypertext Transfer Protocol) and
language (HTML, Hypertext Markup Language) of the
Web have not been designed for mobile applications and
mobile devices, thus creating many problems!
n Typical transfer sizes
HTTP request: 100-350 byte
responses avg. <10 kbyte, header 160 byte, GIF 4.1kByte, JPEG
12.8 kbyte, HTML 5.6 kbyte
but also many large files that cannot be ignored
n The Web is no file system
Web pages are not simple files to download
static and dynamic content, interaction with servers via forms,
content transformation, push technologies etc.
many hyperlinks, automatic loading and reloading, redirecting
a single click might have big consequences!