Socket functions and /etc/hosts and /etc/servi​ces

I have verified that I con open a socket with either the host name or the IP address.
But can I use either the port number or the service name (from /etc/services)?
It allows me to use a string constant instead of a numeric, but it doesn't seem to work.

The string form for the port number is specifically meant to use the NI Service Locator service and nothing else. It does not link into /etc/services or anything like that at all but is a proprietary service locator solution from NI. There exist LabVIEW VIs that one can use to both query this service as well as register new services. It can be found at vi.lib/Utility/ServLocInterface.llb. The actual service used to be programmed in LabVIEW around LabVIEW 7.0 but quickly was moved to a real system service at least on Windows. Not sure if other platforms still use the VI based service implementation or have a native service deamon too, for this.
Theoretically it would be possible to create some translation program in LabVIEW that reads /etc/services and then registers them through the service locator API but I'm not sure I see a real benefit in this.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

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