Add support of write attribute in Leshan server demo

[sumanthsss]

It would be good if we can have an option to perform write attribute on the demo server code, with operations Minimum Period, Maximum Period, Greater Than, Less Than, and Step.

[sbernard31]

Thx to @AButenko there is a REST API for this. (see #733)
But still no UI.

To test it you can use :

curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/0/0/attributes?pmin=30&pmax=120"   
curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/0/attributes?pmin=30&pmax=120"   
curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/attributes?pmin=30&pmax=120"   

[Hanningz]

Thx to @AButenko there is a REST API for this. (see #733) But still no UI.

To test it you can use :

curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/0/0/attributes?pmin=30&pmax=120"   
curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/0/attributes?pmin=30&pmax=120"   
curl -i  -X PUT  "http://localhost:8080/api/clients/yourendpointname/3/attributes?pmin=30&pmax=120"   

Hello, I have the same issues and I tested the above command with Leshan Server demo but got the "INTERNAL_SERVER_ERROR(500)", also I tired this one”http://localhost:8080/api/clients/epname/3303/0/5700/attributes?pmin=30&pmax=120&gt=8.0&st=1.2”, I got “dquote>” from my terminal. I wonder do I need to modify the Leshan server demo? So what I am trying to achieve is the notify part, for example, if the temperature sensor value is over 8 then I get the obs notification, I already tried the SSEClient python script, it works and show all the obs results, so I wonder any instructions of how I can set to receive the obs result when the value is in certain scope? Thank you so much.

[sbernard31]

I just tested with a leshan-client-demo and I get :

HTTP/1.1 200 OK
Date: Wed, 29 Sep 2021 08:24:47 GMT
Server: Jetty(9.4.34.v20201102)
Content-Type: application/json
Content-Length: 116

{"status":"INTERNAL_SERVER_ERROR(500)","valid":true,"success":false,"failure":true,"errormessage":"not implemented"}

Meaning that all seems to works well at server side but we get a INTERNAL_SERVER_ERROR(not implemented) from the client.

This the expected behavior as Write Attribtues is not implemented for leshan client (see #534)