Test Bed for Plain C/C++ Protocol Implementations

摘要

This paper presents a protocol software test bed, which was developed for the testing of a Network Access Authentication Protocol (NAAP) implementation. We demonstrate how modular software design can help in protocol testing and we present a simple software interface that enables flexible protocol testing of protocol implementations. Besides normal use scenarios, the test bed allows automatic testing of various error cases, such as dropped, delayed, duplicated and modified packets. The presented protocol software test bed was successfully used in the testing of a NAAP implementation, and several normally difficult-to-find errors were fixed during the testing. The same test bed design was also used to test a Mobile IP implementation, and it can be applied to other implementations as well.