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Using ethernet TCP/UDP frames with header

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Hello everyone,

 

I didn't manage to find a clear answer to my specific problem.

 

I need to send an ethernet frame following UDP or TCP protocols. The problem is that I can't access to the frame header if I use TCP / UDP LabVIEW function. I really need to control the frame's header in my application.

I first thought about using VISA functions, but it doesn't seem to work :

A frame is sent (not the expected frame, probably a synchronisation one), then the write function waits 2 seconds (timeout value), and do a -1073807343 error : "VISA:  (Hex 0xBFFF0011) Insufficient location information or the device or resource is not present in the system."

Maybe I didn't use it properly.

 

If not possible, i will probably use an external DLL.

 

Can you confirm that what I am trying to do is possible with VISA or any other LabVIEW function ?

Do you have other ideas before I try to find an appropriate library ?

 

Thanks


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