WAP is an open international standard for applications that use wireless communication. Its principal application is to enable access to the Internet from a mobile phone or PDA. A WAP browser provides all of the basic services of a computer based web browser but simplified to operate within the restrictions of a mobile phone, such as its smaller view screen. The Japanese I mode system is another major competing wireless data protocol. WAP sites are websites written in,or dynamically converted to, WML and accessed via the WAP browser. Currently, there are WAP site authoring tools accessible to many countries- tagtag, wapple, all2wap,
Technical specifications
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wap is a protocol for wireless devices like multi media mobile
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The bottom-most protocol in the suite is the Wap datagram protocol , which is an adaptation layer that makes every data network look a bit like UDP to the upper layers by providing unreliable transport of data with two 16-bit port numbers . WDP is considered by all the upper layers as one and the same protocol, which has several “technical realizations” on top of other “data bearers” such as SMS, USSD etc. On native IP bearers such as GPRS, UMTS packet-radio service, or PPP on top of a circuit-switched data connection, WDP is in fact exactly UDP.
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WTLS provides a public-key cryptography-based security mechanism similar to TLS. Its use is optional.
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WTP provides transaction support (reliable request/response) that is adapted to the wireless world. WTP supports more effectively than TCP the problem of packet loss, which is common in 2G wireless technologies in most radio conditions, but is misinterpreted by TCP as network congestion.
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Finally, WSP is best thought of on first approach as a compressed version of HTTP. This protocol suite allows a terminal to emit requests that have an HTTP or HTTPS equivalent to a WAP gateway. The gateway translates requests into plain HTTP.
