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contiki-ng / contiki-ng

Contiki-NG: The OS for Next Generation IoT Devices
https://www.contiki-ng.org/
BSD 3-Clause "New" or "Revised" License
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cooja coap-example.The server does not respond to the client #1063

Closed chanseng closed 5 years ago

chanseng commented 5 years ago

I follow this tutorial to simulate coap's sever with client： https://slogix.in/how-to-run-coap-applications-in-contiki-cooja-simulator But after startup, the client will always report --toggle timer--

--done-- It looks like server does not seem to respond to request. what should i do.

chanseng commented 5 years ago

the nodes output is below: 00:00.510 ID:2 Rime started with address 0.18.116.2.0.2.2.2 00:00.519 ID:2 MAC 00:12:74:02:00:02:02:02 Contiki 3.0 started. Node id is set to 2. 00:00.528 ID:2 nullsec nullmac nullrdc, channel check rate 128 Hz, radio channel 26, CCA threshold -45 00:00.538 ID:2 Tentative link-local IPv6 address fe80:0000:0000:0000:0212:7402:0002:0202 00:00.541 ID:2 Starting 'Erbium Example Server' 00:00.656 ID:1 Rime started with address 0.18.116.1.0.1.1.1 00:00.664 ID:1 MAC 00:12:74:01:00:01:01:01 Contiki 3.0 started. Node id is set to 1. 00:00.673 ID:1 nullsec CSMA ContikiMAC, channel check rate 8 Hz, radio channel 26, CCA threshold -45 00:00.685 ID:1 Tentative link-local IPv6 address fe80:0000:0000:0000:0212:7401:0001:0101 00:00.688 ID:1 Starting 'Border router process' 'Web server' 00:00.706 ID:1 ?PGot configuration message of type P 00:00.708 ID:1 Setting prefix aaaa:: 00:01.173 ID:3 Rime started with address 0.18.116.3.0.3.3.3 00:01.182 ID:3 MAC 00:12:74:03:00:03:03:03 Contiki 3.0 started. Node id is set to 3. 00:01.191 ID:3 nullsec nullmac nullrdc, channel check rate 128 Hz, radio channel 26, CCA threshold -45 00:01.201 ID:3 Tentative link-local IPv6 address fe80:0000:0000:0000:0212:7403:0003:0303 00:01.204 ID:3 Starting 'Erbium Example Client' 00:01.207 ID:3 Press a button to request .well-known/core 00:01.690 ID:1 Server IPv6 addresses: 00:01.693 ID:1 aaaa::212:7401:1:101 00:01.696 ID:1 fe80::212:7401:1:101 00:11.199 ID:3 --Toggle timer-- 01:17.064 ID:3 01:17.065 ID:3 --Done-- 01:17.066 ID:3 --Toggle timer-- 01:20.467 ID:3 | 01:20.468 ID:3 --Done-- 01:20.469 ID:3 --Toggle timer-- 01:20.489 ID:3 | 01:20.490 ID:3 --Done-- ....toggle timer forever someone please help me

kaleemullah360 commented 5 years ago

The tutorial you mentioned in link doesn't seems to be working. my suggestion are you can use following example at mote side.

https://github.com/contiki-ng/contiki-ng/blob/develop/examples/coap/coap-example-server/coap-example-server.c

and following nodejs library at client (laptop/computer) side. https://github.com/mcollina/node-coap

Here is instructions:

in cooja simulator add first mote as border router and from this mote menu choose

serial socket(SERVER). and press start.

add second mote in simulation as coap-example-server.c mentioned above.

now setup node-coap library as global with following command:

sudo npm i -g node-coap

look for example provided with library or you can subscribe to a coap url of the form coap://test/hello via command line just to see if coap mote is sending its data over command line.

chanseng commented 5 years ago

thank you very much