Where is the OPTION VALUE?

[Salv7]

I loaded microcoap on ARDUINO DUE. When I receive a packet from a CoAP client (mozilla firefox with Copper plugin), where I can find options number and his value?
I created a resource called Alice.
I see that inpkt->opts[0].num contains this binary value: 00111011. By referring to http://tools.ietf.org/pdf/rfc7252.pdf (section 3.1) I suppose that the first four bits (0011=3 in decimal) are the OPTION DELTA, the last four bits (1011=11 in decimal) are the OPTION LENGTH. By referring to the "Table 7: CoAP Option Numbers" of the previous CoAP document, I see that this option is Uri-Host (number 3), but I don' t know where are the 11 bytes of the OPTION VALUE. Where are them? Are my assumpions right?

[LYJHub]

How did you do to make microcoap work on ARDUINO DUE?
I do the same but it never work..

[allenhuffman]

When a packet is received, coap_parse() will break it apart and load it in to elements of the structures. The values in the structures are already decoded. In the example main.c:

    n = recvfrom(fd, (char*)buf, sizeof(buf), 0, (struct sockaddr *)&cliaddr, &len);
    if (0 != (rc = coap_parse(&pkt, buf, n)))
        printf("Bad packet rc=%d\n", rc);
    else
    {

...you can see the values of each options like this:

      int i;
      for (i=0; i<pkt.numopts; i++)
      {
        printf("Option %d is Number %d\n", i, pkt.opts[i].num);
      }

In my test, the option numbers reported were:

Option 0 is Number 11
Option 1 is Number 11
Option 2 is Number 12
Option 3 is Number 23