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GetDataDescriptions returns 0

Posted: Mon Nov 04, 2013 9:04 pm
by ORB_Lab
I am trying to get the list of trackables from the server via GetDataDescriptions call but nothing appears to happen. The call returns 0 and the pointer passed in does not change. In Motive I have 1 rigid body and rigid body streaming is enabled. The client has been initialized and I am able to read frame data..

Is there anyplace I can look for error messages/ anybody know whats wrong?


Re: GetDataDescriptions returns 0

Posted: Thu Nov 21, 2013 5:33 pm
by NaturalPoint-Dustin

Thank you for posting on the forums. Are you testing with the precompiled samples in the NatNet SDK?

Re: GetDataDescriptions returns 0

Posted: Fri Dec 06, 2013 12:58 pm
by ORB_Lab
I am testing with 2.5.0. I was testing with my own application, but I just checked the WinFormTestApp with unicast and it also appears to fail with "Unable to retrieve DataDescriptions"

Re: GetDataDescriptions returns 0

Posted: Tue Dec 10, 2013 2:46 pm
by morgan
Some ideas for troubleshooting:

If streaming locally:
- Run with the default settings in Motive and Winforms sample, with both client and server IP addresses set to local loopback ( on the client, and set in Motive.
- Disable Windows firewall

If streaming remotely
- Disable Windows firewall on client and server
- Check server and client ip settings.
- If either machine has mulitple network cards/interfaces, make sure you are connecting to a network card that can talk to the other network card.
- Remove network switches/hubs between client and server
- Switch to Unicast (on both client and server) to isolate whether multicast filtering is in effect on your network.

Let us know if this helps,