[lwip-users] TCP transmission stalls

[Pavel Grishin]

Hello,

I am running a test program which sends some text continuously.

while(1){
        do{
                while(tcp_sndbuf(serv_pcb) < strlen(text));
                err = tcp_write(serv_pcb, text, strlen(text), 0);
                tcp_output(serv_pcb);
        }while(err != ERR_OK);
}

It transmits a number of times and then stops with err = ERR_MEM.
Why does it happen?

I am using lwIP with VDK and blackfin.

Pavel.