ECPG and COPY FROM STDIN

Hey List!
I have to do a Benchmark-Test in C (ECPG) with and without network.
After reading the Performance and COPY Documentation (not correctly), I
wanted to Copy a File over the Network by using "COPY FROM 'filename'".
After some curious Problems I knew why.
Now I read some about "COPY FROM STDIN. But I didn't find an Example.
Can someone please give me an Example for that ?

Or:

Is there another command to insert many tuples from a Client to a
Server in an adequate time ?

Niels