static void send_packet(struct mqtt_sn_connection *mqc, char* data, size_t len)
{
simple_udp_send(&(mqc->sock), data, len);//these datatypes should all cast fine
if (mqc->keep_alive>0 && mqc->stat == MQTTSN_CONNECTED)
{
//normally we would use this to make sure that we are always sending data to keep the connection alive
//but since the gateway does not support pubacks, we will always be relying on a
//steady stream of pings to ensure that the connection stays alive.
ctimer_restart(&(mqc->send_timer));
}
}
/* Internal function to send network data to uIP stack */
static int check_and_send_packet(struct net_buf *buf)
{
struct net_tuple *tuple;
struct simple_udp_connection *udp;
int ret = 0;
if (!netdev.drv) {
return -EINVAL;
}
tuple = net_context_get_tuple(buf->context);
if (!tuple) {
return -EINVAL;
}
switch (tuple->ip_proto) {
case IPPROTO_UDP:
udp = net_context_get_udp_connection(buf->context);
if (!net_context_get_receiver_registered(buf->context)) {
ret = simple_udp_register(udp, tuple->local_port,
#ifdef CONFIG_NETWORKING_WITH_IPV6
(uip_ip6addr_t *)&tuple->remote_addr->in6_addr,
#else
(uip_ip4addr_t *)&tuple->remote_addr->in_addr,
#endif
tuple->remote_port, udp_packet_reply, buf);
if (!ret) {
NET_DBG("UDP connection creation failed\n");
ret = -ENOENT;
break;
}
net_context_set_receiver_registered(buf->context);
}
simple_udp_send(buf, udp, buf->data, buf->len);
ret = 0;
break;
case IPPROTO_TCP:
NET_DBG("TCP not yet supported\n");
ret = -EINVAL;
break;
case IPPROTO_ICMPV6:
NET_DBG("ICMPv6 not yet supported\n");
ret = -EINVAL;
break;
}
return ret;
}
