Hi!
First of all: thanks for everyone for your help so far.
I'm using RIOT in an RPL network and I'm trying to send UDP packets with a
custom application level data. I developed a solution which is similar to
the udp packet handling in the gnrc_networking example.
In the networking example the payload is the following:
payload = gnrc_pktbuf_add(NULL, data, strlen(data), GNRC_NETTYPE_UNDEF);
I registered my thread to gnrc with the following lines:
server.pid = rfnode_udpthread_init();
server.demux_ctx = (uint32_t)port;
gnrc_netreg_register(GNRC_NETTYPE_UDP, &server);
printf("Success: started UDP server on port %d\n",(int) port);
When my eventloop catches a GNRC_NETAPI_MSG_TYPE_RCV then it calls my
function when I get the data out of the msg.
In the message handler I filter for:
snip->type == GNRC_NETTYPE_UNDEF
It works right if I open a direct connection, but if I set up an RPL
netowork with multiple nodes, then if I send any packet to a destination (
by the IP in the fibroute cmd ) then it catches so many snippets ( possibly
for RPL? ), so its not usable.
I did some debugging, and the snippets seems to be all right
(UNDEF->UDP->IPV6->NETAPI in the snippet).
I added my own GNRC type into gnrc_nettype_t in nettype.h
called GNRC_NETTYPE_RFPKT, so I could filter it:
payload = gnrc_pktbuf_add(NULL, data, strlen(data), GNRC_NETTYPE_RFPKT);
I also filter for this type in my msg handler:
snip->type == GNRC_NETTYPE_RFPKT
and it doesn't catch any, and the snippets which I get also seem to be
wrong, and I don't see my type in the snippets anywhere.
I think that I'm using the networking stack in wrong way, what am I missing?
Viktor
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