Thread: Transmitting data to the cRIO from the Driver's station via TCP/UDP
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Unread 06-02-2012, 19:52
Greg McKaskle Greg McKaskle is offline
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Re: Transmitting data to the cRIO from the Driver's station via TCP/UDP
UDP is a very basic communications protocol, quite good for sending small amounts of data in a repeating fashion. If you find yourself with more data than will fit in UDP ( about 1500 bytes is typical ), I'd suggest using TCP.

TCP will automatically break a big packet into smaller ones, and reassemble on the read end. It ignores duplicates, checks for missing elements and corrupted elements, and puts sub packets back in order if they happen to arrive out of order. There are other difference too, but the camera and other HTTP sessions are based on TCP.

The error you received was indicating that the buffer was bigger than the UDP limit. When the issue looked cleared up, it was just that you were discarding the error.

As I pointed out in the other thread, there is no reason to send an image. The dashboard already displays it. Why send it again?

Greg McKaskle
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