|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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!
|
|