|written 13 months ago by||• modified 13 months ago|
|written 13 months ago by|
Wireless transaction protocol (WTP) manages transactions by conveying requests and responses between a user agent and an application server for such activities as browsing and e-commerce transactions. WTP provides a reliable transport service but dispenses with much of the overhead of TCP, resulting in a lightweight protocol that is suitable for implementation in "thin" clients (e.g., mobile nodes) and suitable for use over low-bandwidth wireless links.
WTP includes the following features:
Three classes of transaction service.
Optional user-to-user reliability: WTP user triggers the confirmation of each received message.
Optional out-of-band data on acknowledgments.
PDU concatenation and delayed acknowledgment to reduce the number of messages sent.
WTP is transaction oriented rather than connection oriented. With WTP, there is no explicit connection setup or teardown but rather a reliable connectionless service.