NDLI: Backward validation of communicating complex state machines in web services environments

Content Provider	Springer Nature Link
Author	Zoubeyr, Farah Tari, Abdelkamel Ouksel, Aris M.
Copyright Year	2010
Abstract	Communicating Finite State Machines (CFSM) lack the high level syntactic and structural abstractions of Communicating Complex State Machines (CCSM), such as nesting and encapsulation, to model highly complex protocols that are likely to arise in web services environments. The incorporation of these features in a protocol specification model would require the design of a new validation technique to efficiently check for protocol errors, such as deadlocks and non-reachable transitions. A reachability graph is used to represent the execution states of the protocol and to verify their consistency. In this paper, we propose a new validation technique for protocols modeled with complex FSM, called RLRA (Reverse Leaping Reachability Analysis), which enables the detection of all deadlock errors. It is a backtracking approach, which first identifies an initial set of suspected states, those possibly containing deadlocks, then refines this set to those likely to cause deadlock, and finally backtracks through the graph while checking for errors until the root state of the protocol is reached. Leap graphs are employed to prune the number of execution states examined, and thereby mitigate the combinatorial explosion of the state space. Extensive tests and comparisons were performed, which show the effectiveness of our technique.
Starting Page	255
Ending Page	270
Page Count	16
File Format	PDF
ISSN	09268782
Journal	Distributed and Parallel Databases
Volume Number	27
Issue Number	3
e-ISSN	15737578
Language	English
Publisher	Springer US
Publisher Date	2010-03-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Web services validation protocol Complex finite state machines Deadlock errors Memory Structures Operating Systems Database Management Information Systems Applications (incl.Internet) Data Structures
Content Type	Text
Resource Type	Article
Subject	Information Systems and Management Information Systems Software Hardware and Architecture

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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