> So my question is, how do i make my communication between, my
> embedded target and the PC client run as smoothly as running
> the website
> on a PC webserver ?
> Is that even possible with lwip ?
My guess is that you've configured lwIP with too small a TCP_SND_BUF or
TCP_SND_QUEUELEN and this is interacting badly with the delayed ACK
algorithm. Could you post your lwipopts.h configuration file?