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* Prepared JAVA project files for Hands-on
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## 2. Installation of Copper Plugin for Mozilla Firefox
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- https://addons.mozilla.org/de/firefox/addon/copper-270430/
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- Click on „add to Firefox“ & Confirm Installation
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After the installation you can enter coap://host:port/resourcePath/?query=filter.
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Copper will allow you to make any CoAP interaction interactively.
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## 3. Introduction of jCoAP
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- WS4D-jCoAP: Java implementation of CoAP
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- https://gitlab.amd.e-technik.uni-rostock.de/ws4d/jcoap
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### Task 1 – Sequence Diagram
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Server Side
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Client Side
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**Server:** individual implementation of a server application, creates CoapResourceServer and resources
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**TemperatureResource:** individual resource, inherits from BasicCoapResource
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**CoapClient (interface):** describes interfaces that must be supported by a client
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* ToDo on server side:
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1. Create a new resource class TemperatureResource
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2. Instantiate a new ResourceServer
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3. Instantiate a new TemperatureResource
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* ToDo on client side:
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1. Establish a connection to the Server using the ChannelManager
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2. Create a CoapRequest & add some Options
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3. Send the CoapRequest
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You can find the required files in our repository at https://gitlab.amd.e-technik.uni-rostock.de/ws4d/jcoap/tree/master/ws4d-jcoap-handsOn
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1. File > Import
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2. General > Existing Projects ...
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3. Click ‚Next‘
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4. Browse <Select Project Folder>
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5. Click ‚Finish’
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* the resulting GUI should look like this:
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* We have prepared some FIXME and TODO annotations:
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* Just open the „Task“ view
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## 5. Task 1: Implementation of client/server and enable simple message exchange
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### Server
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1. Create a new resource class TemperatureResource (already done in our example Server)
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2. Instantiate a new ResourceServer
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3. Instantiate a new TemperatureResource
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* Tip: make a copy of „TemperatureResource.java“
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### Client
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1. Establish a connection to the Server using the ChannelManager
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2. Create a CoapRequest & add some Options
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3. Send the CoapRequest
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* If you have written your own resources before: GET them
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## 6. Task 2: Implementation of a AC control by using the CoAP-observe mechanism
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1. Use the eventing mechanism CoAP-Observe
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2. Let the server notify clients every 5 seconds about a changed TemperatureResource
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3. Implement an Air Conditioner Resource with the path “/ACControl”, that can be set to “high”,
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| ... | ... | |
