Abstract

Detection and elimination of Byzantine faults in the Web services environment by applying the features of SOAP handlers is the principle objective of this work.  The Web services may sometimes be infused with suspicious modules intentionally for them to behave in an abnormal manner.  By introducing faulty aspects into the service deployment on the fly makes the Web service to generate Byzantine faults.  The application servers too shall be infected with malicious aspect codes for generating Byzantine faults and therefore all the deployed services may be-come victim for dispatching erroneous response.  In the proposed work, SOAP handlers are induced into the Web application server for manipulating the clients request message for detecting the occurence of Classes that behave in an abnormal manner in both the application servers and in service deployments.  The service that is being affected by the presence of malicious classes is deactivated, till the faulty service is replaced or repaired by the original service provider.  When these type of SOAP handlers are induced into the Web application servers, the reliability of the service is increased and thereby the clients are guaranteed with error free response.  It is also observed that when SOAP handlers are introduced in detecting Byzantine faults, there was no performance degradation either in server level or at service level.

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