lwip/contrib/apps/netio/netio.c

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#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 */