Hmm, as far as I know you can't really control such things with TCP sockets in general. I mean the TCP(/IP) itself doesn't enable to force sending the bytes from the buffer. It makes it own decision what and when to send stuff. I wants to send the stuff as efficient as possible.
No, I have to admit I am not really sure about this. You might want to look up about the TCP protocol, Nagle algorithm etc. Yours, Weyert

