Thanks to all of you, but this doen't work.
I just tried all the suggestions:
$|++; $|=1; in the Client and in the Server.
But my Client keeps silence, doen't print anything as long the server is running.
By the way all what has been sent is lost. I think if it were the buffer,
it should print the buffer as soon as the first line: "Got1: NIX," appears.
What happened to that what was written meanwhile to the buffer?
Carl