Thomas Kunz
Systems and Computer Engineering
14
World Wide Web and Mobility
nProtocol (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!
nTypical 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
nThe 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!