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bjoern.butzin created page: home
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Sep 08, 2016
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Björn Butzin
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@@ -24,10 +24,10 @@ The following points will be covered by this tutorial:
## 2. Introduction of jCoAP
-
WS4D-jCoAP: Java implementation of CoAP
-
- http://ws4d.org/
-
- https://gitlab.amd.e-technik.uni-rostock.de/ws4d/jcoap
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http://ws4d.org/
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https://gitlab.amd.e-technik.uni-rostock.de/ws4d/jcoap
•
Task 1 – Sequence Diagram
###
Task 1 – Sequence Diagram
Server Side
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@@ -46,18 +46,18 @@ Client Side
-CoapClient (interface):describes interfaces that must be supported by a client
*
ToDo on server side:
1.
Create a new resource class TemperatureResource
2.
Instantiate a new ResourceServer
3.
Instantiate a new TemperatureResource
4.
Add the TemperatureResource to the ResourceServer
5.
Run the ResourceServer
1.
Create a new resource class TemperatureResource
2.
Instantiate a new ResourceServer
3.
Instantiate a new TemperatureResource
4.
Add the TemperatureResource to the ResourceServer
5.
Run the ResourceServer
*
ToDo on client side:
1.
Establish a connection to the Server using the ChannelManager
2.
Create a CoapRequest & add some Options
3.
Send the CoapRequest
4.
Wait for CoapResponse
5.
Print the CoapResponse on the console
1.
Establish a connection to the Server using the ChannelManager
2.
Create a CoapRequest & add some Options
3.
Send the CoapRequest
4.
Wait for CoapResponse
5.
Print the CoapResponse on the console
## 3. Import of prepared project into Eclipse
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@@ -87,30 +87,30 @@ Client Side
5.
Run the ResourceServer
1.
Create a new resource class TemperatureResource (TemperatureResource.java):
*
We could have used the predefined BasicCoapResource
*
BasicCoapResource is a resource that just keeps a static
`byte[ ]`
that is:
*
*
returned on GET requests
*
*
replaced by the payload on PUT requests
*
*
appended with the payload on POST requests
*
*
deleted on DELETE requests
*
*
We do not want a static
`byte[ ]`
*
Instead we want a random number to be returned on a GET
*
PUT, POST and DELETE are not used
*
->So we implemented TemperatureResource wich extends BasicCoapResource with:
*
*
A constructor
**
*
To initialize the resource
**
*
Disallow POST, PUT and DELETE
*
*
2 get() Methods
**
*
Get a list of accepted media types [& query parameters]
**
*
Returns a
`byte[ ]`
together with its media type
*
*
And the
`getResourceType()`
method
**
*
Wich returns a description string of the resource
*
We could have used the predefined BasicCoapResource
*
BasicCoapResource is a resource that just keeps a static
`byte[ ]`
that is:
*
returned on GET requests
*
replaced by the payload on PUT requests
*
appended with the payload on POST requests
*
deleted on DELETE requests
*
We do not want a static
`byte[ ]`
*
Instead we want a random number to be returned on a GET
*
PUT, POST and DELETE are not used
*
->So we implemented TemperatureResource wich extends BasicCoapResource with:
*
A constructor
*
To initialize the resource
*
Disallow POST, PUT and DELETE
*
2 get() Methods
*
Get a list of accepted media types [& query parameters]
*
Returns a
`byte[ ]`
together with its media type
*
And the
`getResourceType()`
method
*
Wich returns a description string of the resource
2.
Instantiate a new ResourceServer (Server.java, FIXME 1):
*
Need a CoapResourceServer to maintain resources
`CoapResourceServer resourceServer = new CoapResourceServer();`
*
Need a CoapResourceServer to maintain resources
`CoapResourceServer resourceServer = new CoapResourceServer();`
3.
Instantiate a new TemperatureResource (Server.java, FIXME 2):
*
Resources are created like normal objects and added to the server
`CoapResource resource = new CoapResource();`
*
Resources are created like normal objects and added to the server
`CoapResource resource = new CoapResource();`
*
Use the „Tasks“ view of Eclipse to find the right places
*
Solve only FIXME 1-3 as described by the following instructions - ignore other FIXMEs or TODOs
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