An Implementation Structure for RM-OSI/ISO Transaction Processing Application Contexts

This technical report presents a structure for a modular implementation of application contexts from the RM-OSI/ISO (Reference Model---Open Systems Interconnection / International Organization for Standardzation) in which the TP (Transaction Processing) protocol participates. This protocol provides services to support the execution of distributed atomic transactions in the OSI environment. The structure presented influences the implementation of other application contexts. \par In this text it is also shown the way the upper layers protocols are being implemented in a didactic communication system called SISDI-OSI (Sistema Didático para o Modelo OSI---Didactic System for the OSI Model) in terms of process configuration and interprocess communication mechanisms. The experiences with protocol implementations for this system are then commented.

1993