| Stacking ports [message #1765323] |
Thu, 08 June 2017 12:32  |
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Hello everyone,
I'm stuck with a problem where I have multiple protocols to test, on same or different levels that can be chosen.
For example, let me take the ITS stack: There is GN, BTP and CAM messages, each on different level. If we have 3 ports, and we want to send a CAM message, is it possible to stack the 3 ports so it creates the correct output? Or it is necesarry to write different ports?
Thank you in advance,
Best regards,
Naum
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| Re: Stacking ports [message #1765330 is a reply to message #1765323] |
Thu, 08 June 2017 13:27  |
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Hi Naum,
it should be sufficient to have one test port for the lowest level. To refer to your example , let's assume you have a GN test port that can deal with GN messages.
Then you can write a translation port for BTP to translate between BTP and GN, and another translation port to translate between CAM and GN.
The functions in the translation port will have to assemble/disassemble the packets ( as in add CAM PDU to BTP, encode the whole BTP , add BTP PDYU encoded to a GN message etc.)
So the GN layer will map to the GN test port directly, while BTP and CAM with a different translation port each.
I have written about translation ports (and their predecessor , dual-faced ports) recently.
I hope that I managed to interpret your question correctly and that the answer makes sense.
Please let me know if this help
BR
Elemer
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