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The TCP/IP UpperTester (UT) provides the implementation of a simple client for testing TCP stacks on a Device Under Test (DUT). Implemented on an ECU, the UT offers several functionalities (e.g. opening and closure of communications sockets). The tester triggers these functions by UDP orders, so called ServicePrimitives (SP).
The UT sources are in simple C89. For the regulation of network functionalities of the stacks to be tested, it uses the BSD socket API, which was published in 1983. This API is implemented in common UNIX systems, (slightly modified) in Windows, and in most TCP/IP stacks for embedded.
The UT can also be implemented in the AUTOSAR software of Elektrobit or VECTOR Informatik with the appropriate adaptations.
A short list of extensions:
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