contiki/examples/webserver-ipv6
2012-10-26 15:54:49 +02:00
..
Makefile
Makefile.target
README
webserver6.c Removed all old RCS tags in the Contiki source tree. Those RCS tags are not used any more, as we are now using git to manage the Contiki source tree 2012-10-26 15:54:49 +02:00

This example features a simple webserver running on top of the IPv6
contiki stack.

For this example to run properly the UIP_CONF_TCP compilation flag
must be set to 1 in the contiki-conf.h file of the platform.

By default contiki ipv6 nodes are configured with the low-power RPL
protocol and direct outgoing packets through the RPL parent to a mesh
border router. Access to the webserver thus requires at least one other
node to as the RPL root. The Makefile changes the default to no RPL for
the minimal-net target. Override the RPL choice with
  $make TARGET=minimal-net UIP_CONF_RPL=1
  $make TARGET=any-other UIP_CONF_RPL=0
The RPL mesh border router can be configured with this webserver using the
/examples/ipv6/rpl-border-router/ example.

If you are using the minimal-net platform without RPL you can access the
webserver through the link local address by appending the interface descriptor
shown at launch, e.g.
  wget http://[fe80::296:98ff:fe00:0232%tap0]  (linux)
  ping http://[fe80::206:98ff:fe00:0202%nnnn]  (Windows)
The lower 64 bits are derived from the ethernet EUI-48 "mac address" in uip6.c:
uip_lladdr_t uip_lladdr = {{0x00,0x06,0x98,0x00,0x02,0x32}};

The ipv6 prefix can be hard-coded in the build or assigned through a
host router advertisement. If hard-coded just assign the prefix to the
interface:
  sudo ip -6 address add fdfd::1/64 dev tap0 (linux)
  netsh commands or the interface GUI        (Windows)

On linux you can set up router advertisements as follows:
- First do 'ifconfig tap0 inet6 3ffe:0501:ffff:0100:0206:98ff:fe00:0231'
  or 'ip -6 address add 3ffe:0501:ffff:0100:0206:98ff:fe00:0231' dev tap0.
- You might need to add a route 'ip -6 route add 
  aaaa:0000:0000:0000:0206:98ff:fe00:0232/64 dev tap0' 
- Then configure a global address by sending a router advertisement (RA)
  with a prefix option. You can use radvd for example to generate such a
  packet. 
  Note: You should set the preferred and valid lifetime to reasonable
  value to avoid clock wrap-around. E.g.:
        AdvPreferredLifetime 400; 
        AdvValidLifetime 600;
  Assume the prefix in the RA is:
  3ffe:0501:ffff:0100:0000:0000:0000:0000/64.
  and that the resulting address created by the contiki stack is: 
  3ffe:0501:ffff:0100:0206:98ff:fe00:0232
- Finally you can use 'wget http://[3ffe:0501:ffff:0100:0206:98ff:fe00:0232]' 
  to get the web page (index.html file)

See the wiki page for more details -
 http://www.sics.se/contiki/wiki/index.php/Setting_up_Wireshark_on_a_Loopback_Interface

The default webserver and content is in /apps/webserver/...
  Change that using e.g. 
  $make clean
  $make WITH_WEBSERVER=webserver-nano
  $make TARGET=redbee-econotag WITH_WEBSERVER=webserver-nano
  $make TARGET=avr-raven WITH_WEBSERVER=raven-webserver
  
  ******** Make clean before switching make options! **********