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Specification and implementation of an ISO session layer

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3 Author(s)
Fleischmann, A. ; IBM European Networking Center, Tiergartenstrasse 15, 6900 Heidelberg, Germany ; Chin, S.T. ; Effelsberg, W.

This paper describes a novel technique for the specification and implementation of layered communication software. The technique is called Parallel Activity Specification Scheme (PASS) and is based on an extended-state machine model of protocol automata. It allows a convenient description of the communication behavior of concurrent systems and semiautomatic generation of programming language code from the specification. The first large-scale experience gained with this technique was in the specification and implementation of an ISO session layer. The code generation process and the embedding of the session code into a portable OSI operating system environment are described in detail.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Systems Journal  (Volume:26 ,  Issue: 3 )