[lwip-users] where should I call tcp_accepted?

[CHASE CHENG]

Hi,

I refered the flow of the page (http://lwip.wikia.com/wiki/Raw/TCP), which said that I should call tcp_accepted once an connection is accepted.

I added the tcp_accepted in my tcp_accept callback function, but it shows fail since pcb->state is already changed to ESTABLISHED.

I wondered where should I call tcp_accepted?

Regards,

Chase

Here is part of the code:

static err_t

netio_accept(void *arg, struct tcp_pcb *pcb, err_t err)

{

...

  tcp_accepted(pcb);

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I tried to add tcp_accepted here.

  tcp_arg(pcb, ns);

  tcp_sent(pcb, netio_sent);

  tcp_recv(pcb, netio_recv);

  tcp_poll(pcb, netio_poll, 4); /* every 2 seconds */

  return ERR_OK;

}

void netio_init(void)

{

  struct tcp_pcb *pcb;

  int err;

  pcb = tcp_new();

  do{

err = tcp_bind(pcb, IP_ADDR_ANY, 18767);

tx_thread_sleep(500);

printf("tcp_bind status: %d\n", err);

  }while(err != ERR_OK);

  netio_closed = 0;

  pcb = tcp_listen(pcb);

  

  tcp_accept(pcb, netio_accept);

}