A really basic UDP sender

Question

Hi,
I am trying to make a basic UDP sender. I want to send the average speed of a vehicle to another computer by UDP. I saw an example in Labview 7.1 database: UDP sender.vi.
What I need to know:
How do I find my local and remote port number?
Is the remote host address, the IP address?
Thanks a lot for your help,
Have a nice day,
Phil

Answer 1

See my example in this recent thread.
The remote port number is determined by the listening port of the server. You need to find out. (Many port numbers are assigned by IANA to certain services. For example, if this is a syslog server, you would need to send to remote port 514/UDP.)
The remote host address is the IP address expressed as U32 number. USe String-to-IP to translate a hostname (e.g. ni.com) or dotted-decimal IP address (e.g. 192.168.100.100) to the correct format.
In many cases, the local port is irrelevant. Often it is easiest to simply wire a zero to it. In this case, the OS will automatically choose a free ephemeral port. (If you choose a specific local port, there is always a finite chance that this particular port is already in use, giving you an error.).
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