static void
tcpip_handler(void)
{
static int seq_id;
char buf[MAX_PAYLOAD_LEN];
if(uip_newdata()) {
((char *)uip_appdata)[uip_datalen()] = 0;
PRINTF("Server received: '%s' from ", (char *)uip_appdata);
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("\n");
#if CETIC_NODE_INFO
node_info_t *node = node_info_lookup(&UIP_IP_BUF->srcipaddr);
if(node == NULL) {
node = node_info_add(&UIP_IP_BUF->srcipaddr);
}
if(node != NULL) {
node->last_lookup = clock_time();
strncpy(node->my_info, (char *)uip_appdata, sizeof(node->my_info) - 1);
}
#endif
uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
PRINTF("Responding with message: ");
sprintf(buf, "Hello from the server! (%d)", ++seq_id);
PRINTF("%s\n", buf);
uip_udp_packet_send(server_conn, buf, strlen(buf));
/* Restore server connection to allow data from any node */
memset(&server_conn->ripaddr, 0, sizeof(server_conn->ripaddr));
}
}
void
node_info_route_notification_cb(int event,
uip_ipaddr_t * route,
uip_ipaddr_t * nexthop, int num_routes)
{
node_info_t *node = NULL;
if(event == UIP_DS6_NOTIFICATION_ROUTE_ADD) {
node = node_info_lookup(route);
if(node == NULL) {
node = node_info_add(route);
}
if(node != NULL) {
node->has_route = 1;
node->last_seen = clock_time();
}
} else if(event == UIP_DS6_NOTIFICATION_ROUTE_RM) {
node = node_info_lookup(route);
if(node != NULL) {
node->has_route = 0;
}
}
}
node_info_t *
node_info_update(uip_ipaddr_t * ipaddr, char * info)
{
node_info_t *node = NULL;
char * sep;
uip_ipaddr_t ip_parent;
node = node_info_lookup(ipaddr);
if (node == NULL) {
node = node_info_add(ipaddr);
}
if ( node != NULL ) {
node->last_seen = clock_time();
node->last_message = clock_time();
uint16_t up_sequence = 0;
uint16_t down_sequence = 0;
sep = index(info, '|');
if (sep != NULL) {
node->messages_received++;
up_sequence = atoi(info);
*sep = 0;
info = sep + 1;
if (*info == ' ') {
info++;
}
sep = index(info, '|');
if (sep != NULL) {
*sep = 0;
}
if (uiplib_ipaddrconv(info, &ip_parent) == 0) {
uip_create_unspecified(&ip_parent);
}
if(!uip_ipaddr_cmp(&node->ip_parent, &ip_parent)) {
uip_ipaddr_copy(&(node->ip_parent), &ip_parent);
if (node->messages_received > 1) {
node->parent_switch++;
}
}
if (sep != NULL) {
info = sep + 1;
down_sequence = atoi(info);
}
if (node->messages_received > 1) {
uint16_t up_delta = up_sequence - node->last_up_sequence;
if (up_delta < 100) {
node->messages_sent += up_delta;
node->up_messages_lost += up_delta - 1;
if(down_sequence != node->last_down_sequence + 1) {
node->down_messages_lost += 1;
}
} else {
//Reset statistics
node->messages_sent = 1;
node->replies_sent = 0;
node->up_messages_lost = 0;
node->down_messages_lost = 0;
}
} else {
node->messages_sent = 1;
node->replies_sent = 0;
node->up_messages_lost = 0;
node->down_messages_lost = 0;
}
node->last_up_sequence = up_sequence;
node->last_down_sequence = down_sequence;
} else {
node->last_up_sequence = 0;
node->last_down_sequence = 0;
uip_create_unspecified(&node->ip_parent);
}
}
return node;
}
