source: azure_iot_hub_f767zi/trunk/asp_baseplatform/lwip/contrib-2.1.0/apps/netio/netio.c@ 457

#include "netio.h"

#include "lwip/opt.h"
#include "lwip/tcp.h"

/* See http://www.nwlab.net/art/netio/netio.html to get the netio tool */

#if LWIP_TCP && LWIP_CALLBACK_API
static err_t
netio_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
{
  LWIP_UNUSED_ARG(arg);

  if (err == ERR_OK && p != NULL) {
    tcp_recved(pcb, p->tot_len);
    pbuf_free(p);
  } else {
    pbuf_free(p);
  }

  if (err == ERR_OK && p == NULL) {
    tcp_arg(pcb, NULL);
    tcp_sent(pcb, NULL);
    tcp_recv(pcb, NULL);
    tcp_close(pcb);
  }

  return ERR_OK;
}

static err_t
netio_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
  LWIP_UNUSED_ARG(arg);
  LWIP_UNUSED_ARG(err);

  if (pcb != NULL) {
    tcp_arg(pcb, NULL);
    tcp_sent(pcb, NULL);
    tcp_recv(pcb, netio_recv);
  }
  return ERR_OK;
}

void
netio_init(void)
{
  struct tcp_pcb *pcb;

  pcb = tcp_new_ip_type(IPADDR_TYPE_ANY);
  tcp_bind(pcb, IP_ANY_TYPE, 18767);
  pcb = tcp_listen(pcb);
  tcp_accept(pcb, netio_accept);
}
#endif /* LWIP_TCP && LWIP_CALLBACK_API */