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| .. | ||
| coap-client-example.c | ||
| coap-client-server-example.csc | ||
| Makefile | ||
| project-conf.h | ||
| README | ||
| rest-server-example.c | ||
| rest-server-example.csc | ||
| static-routing.c | ||
| static-routing.h | ||
This is the new example for the Erbium REST Engine ================================================== EXAMPLE FILES ------------- rest-server-example.c: A RESTful server example showing how to use the REST layer to develop server-side applications (at the moment only CoAP is implemented for the REST Engine). coap-client-example.c: A CoAP client that polls the /toggle resource every 10 seconds and cycles through 4 resources on button press (target address is hard-coded). PRELIMINARIES ------------- a) Make sure rpl-border-router has the same stack and fits into mote memory: Disable RDC in border-router project-conf.h #undef NETSTACK_CONF_RDC #define NETSTACK_CONF_RDC nullrdc_driver b) For convenience, define the Cooja addresses in /etc/hosts aaaa::0212:7401:0001:0101 cooja1 aaaa::0212:7402:0002:0202 cooja2 ... c) Get the Copper CoAP browser from https://addons.mozilla.org/en-US/firefox/addon/copper-270430/ d) Optional: Save your target as default target $ make TARGET=sky savetarget COOJA HOWTO ----------- Server only: 1) $ make TARGET=cooja rest-server-example.csc 2) Open new terminal 3) $ make connect-router-cooja 4) Start Copper and discover resources at coap://cooja2:5683/ With client: 1) $ make TARGET=cooja coap-client-server-example.csc 2) Open new terminal 3) $ make connect-router-cooja 4) Wait until red LED toggles on mote 2 (server) 5) Choose "Click button on Sky 3" from the context menu of mote 3 (client) and watch serial output TMOTES HOWTO ------------ Server: 1) Connect two Tmote Skys (check with $ make TARGET=sky sky-motelist) 2) $ make TARGET=sky rest-server-example.upload MOTE=2 3) $ make TARGET=sky login MOTE=2 4) Press reset button, get address, abort with Ctrl+C: Line: "Tentative link-local IPv6 address fe80:0000:0000:0000:____:____:____:____" 5) $ cd ../ipv6/rpl-border-router/ 6) $ make TARGET=sky border-router.upload MOTE=1 7) $ make connect-router For a BR tty other than USB0: $ make connect-router-port PORT=X 8) Start Copper and discover resources at coap://[aaaa::____:____:____:____]:5683/ Add a client: 1) Change the hard-coded server address in coap-client-example.c to aaaa::____:____:____:____ 2) Connect a third Tmote Sky 3) $ make TARGET=sky coap-client-example.upload MOTE=3 DETAILS ------- The Erbium CoAP currently implements draft 08 (name "er-coap-07" stems from last technical draft changes). Central features are commented in rest-server-example.c. In general, apps/er-coap-07 supports: * All draft 08 header options * CON Retransmissions (note COAP_MAX_OPEN_TRANSACTIONS) * Blockwise Transfers (note REST_MAX_CHUNK_SIZE) * Separate Responses (see rest_set_pre_handler() and coap_separate_handler()) * Resource discovery * Observing Resources (see EVENT_ and PRERIODIC_RESOURCE, note COAP_MAX_OBSERVERS) REST IMPLEMENTATIONS -------------------- The Makefile uses WITH_COAP to configure different implementations for the Erbium REST Engine. * WITH_COAP=7 uses Erbium CoAP 07 apps/er-coap-07/. The default port for coap-07 is 5683. * WITH_COAP=3 uses Erbium CoAP 03 apps/er-coap-03/. The default port for coap-03 is 61616. er-coap-03 produces some warnings, as it not fully maintained anymore. * WITH_COAP=0 is a stub to link an Erbium HTTP engine that uses the same resource abstraction (REST.x() functions and RESOURCE macros. TODOs ----- * Blockwise uploads (for POST/PUT payload) * Multiple If-Match ETags * (Message deduplication)