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Server address options giving different 6lowpan header compression

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This commit is contained in:
dak664 2011-03-08 14:15:55 -05:00
parent de7bcda99f
commit d4f58ca7f0
2 changed files with 42 additions and 5 deletions
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23
examples/ipv6/rpl-udp/udp-server.c
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@ -108,8 +108,27 @@ PROCESS_THREAD(udp_server_process, ev, data)
PRINTF("UDP server started\n");
#if UIP_CONF_ROUTER
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 1);
/* uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr); */
/* The choice of server address determines its 6LoPAN header compression.
* Obviously the choice made here must also be selected in udp-client.c.
*
* For correct Wireshark decoding using a sniffer, add the /64 prefix to the 6LowPAN protocol preferences,
* e.g. set Context 0 to aaaa::. At present Wireshark copies Context/128 and then overwrites it.
* (Setting Context 0 to aaaa::1111:2222:3333:4444 will report a 16 bit compressed address of aaaa::1111:22ff:fe33:xxxx)
* Note Wireshark's IPCMV6 checksum verification depends on the correct uncompressed addresses.
*/
#if 0
/* Mode 1 - 64 bits inline */
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 1);
#elif 1
/* Mode 2 - 16 bits inline */
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0x00ff, 0xfe00, 1);
#else
/* Mode 3 - derived from link local (MAC) address */
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
#endif
uip_ds6_addr_add(&ipaddr, 0, ADDR_MANUAL);
root_if = uip_ds6_addr_lookup(&ipaddr);
if(root_if != NULL) {