LWIP Stack: TCP + UDP

LWIP_Init();

upcb = udp_new();

if (upcb)

{

  udp_bind(upcb, IP_ADDR_ANY, UDP_SERVER_PORT);

  udp_recv(upcb, udp_server_receive_callback, NULL);

}

LWIP_Init();

tpcb = tcp_new();

if (tpcb != NULL)

{

  tcp_bind(tpcb, IP_ADDR_ANY, TCP_SERVER_PORT);

  tpcb = tcp_listen(tpcb);

  tcp_accept(tpcb, tcp_callback_accept);

}

void LWIP_Init(void)

{

  struct ip_addr ipaddr;

  struct ip_addr netmask;

  struct ip_addr gw;

  IP4_ADDR(&ipaddr, IP_ADDR0, IP_ADDR1, IP_ADDR2, IP_ADDR3);

  IP4_ADDR(&netmask, NETMASK_ADDR0, NETMASK_ADDR1 , NETMASK_ADDR2, NETMASK_ADDR3);

  IP4_ADDR(&gw, GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);

  lwip_init();

  /* - netif_add(struct netif *netif, struct ip_addr *ipaddr,

  struct ip_addr *netmask, struct ip_addr *gw,

  void *state, err_t (* init)(struct netif *netif),

  err_t (* input)(struct pbuf *p, struct netif *netif))

  Adds your network interface to the netif_list. Allocate a struct

  netif and pass a pointer to this structure as the first argument.

  Give pointers to cleared ip_addr structures when using DHCP,

  or fill them with sane numbers otherwise. The state pointer may be NULL.

  The init function pointer must point to a initialization function for

  your ethernet netif interface. The following code illustrates it's use.*/

  netif_add(&xnetif, &ipaddr, &netmask, &gw, NULL, &ethernetif_init, &ethernet_input);

  /*  Registers the default network interface.*/

  netif_set_default(&xnetif);

  /* Set Ethernet link flag */

  xnetif.flags |= NETIF_FLAG_LINK_UP;

  /* When the netif is fully configured this function must be called.*/

  netif_set_up(&xnetif);

}

upcb = udp_new();

if (upcb)

{

  udp_bind(upcb, IP_ADDR_ANY, UDP_SERVER_PORT);

  udp_recv(upcb, udp_server_receive_callback, NULL);

}

TCP Server Initialisierung:

[c]

tpcb = tcp_new();

if (tpcb != NULL)

{

  tcp_bind(tpcb, IP_ADDR_ANY, TCP_SERVER_PORT);

  tpcb = tcp_listen(tpcb);

  tcp_accept(tpcb, tcp_callback_accept);

}