how to read bytes at port in TCP/IP communication

[Karthikeyan_Mathiyalagan]

Hiii

I am having 1 doubt in visa we knows bytes at port by using the property node...

but for TCP/IP how should i get  bytes at port .... i want to read how many bytes are available in that port.....

can any 1 suggest answer...... 

[Eugen_Graf]

Would you please explain why you need this?

I always use TCP Read instead of VISA Read for TCP/IP communications. If you send a package, you can first send the length of the package and then the package itself. If you read you read first 2 or 4 bytes, where the length of following package is, and than the whole package.

It works fine.

[smercurio_fc]

I can see why knowing how many bytes are available would be quite useful. Would prevent having to do what you're suggesting (which is the typical solution), or to have a Read with a really short timeout and a software buffer (and ignoring the expected timeout from the read).

Alas, it's not possible.