Californium - Revision history

Donsez at 05:28, 23 October 2014

2014-10-23T05:28:03Z

← Older revision		Revision as of 05:28, 23 October 2014
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	* http://people.inf.ethz.ch/mkovatsc/californium.php		* http://people.inf.ethz.ch/mkovatsc/californium.php
	* https://github.com/eclipse/Californium		* https://github.com/eclipse/Californium
	* https://github.com/eclipse/californium/tree/master/californium-osgi		* OSGi bundle (embedding a CoAP server) publishing Ressource services https://github.com/eclipse/californium/tree/master/californium-osgi

	Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w		Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w

Laurent.Lemke at 13:33, 18 September 2014

2014-09-18T13:33:54Z

← Older revision		Revision as of 13:33, 18 September 2014
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	Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w		Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w

	Presentation at PhD Summer school on SmartCities 2014 (more detailed) : http://goo.gl/anfy5w		Presentation at PhD Summer school on SmartCities 2014 (more detailed) : http://goo.gl/anfy5w

Laurent.Lemke at 13:33, 18 September 2014

2014-09-18T13:33:33Z

← Older revision		Revision as of 13:33, 18 September 2014
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	Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w		Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w
			Presentation at PhD Summer school on SmartCities 2014 (more detailed) : http://goo.gl/anfy5w


	==Examples==		==Examples==

Donsez at 07:44, 20 June 2014

2014-06-20T07:44:25Z

← Older revision		Revision as of 07:44, 20 June 2014
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	[[Image:californium-helloworld2.png\|200px\|right\|thumb\|Copper plugin for Firefox]]		[[Image:californium-helloworld2.png\|200px\|right\|thumb\|Copper plugin for Firefox]]
	Californium is a CoAP framework in Java for Stronger [[IoT]] devices		Californium is a [[CoAP]] framework in Java for Stronger [[IoT]] devices

	* http://people.inf.ethz.ch/mkovatsc/californium.php		* http://people.inf.ethz.ch/mkovatsc/californium.php

Donsez at 11:02, 18 June 2014

2014-06-18T11:02:45Z

← Older revision		Revision as of 11:02, 18 June 2014
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			[[Image:californium-helloworld2.png\|200px\|right\|thumb\|Copper plugin for Firefox]]

	Californium is a CoAP framework in Java for Stronger [[IoT]] devices		Californium is a CoAP framework in Java for Stronger [[IoT]] devices

Donsez: Created page with " Californium is a CoAP framework in Java for Stronger IoT devices * http://people.inf.ethz.ch/mkovatsc/californium.php * https://github.com/eclipse/Californium * https://..."

2014-06-18T11:01:25Z

Created page with " Californium is a CoAP framework in Java for Stronger IoT devices * http://people.inf.ethz.ch/mkovatsc/californium.php * https://github.com/eclipse/Californium * https://..."

New page

Californium is a CoAP framework in Java for Stronger [[IoT]] devices

* http://people.inf.ethz.ch/mkovatsc/californium.php
* https://github.com/eclipse/Californium
* https://github.com/eclipse/californium/tree/master/californium-osgi

Presentation at EclipseCon 2014 Toulouse : http://goo.gl/LLQ03w

==Examples==

Server example
<pre>
// author : Matthias Kovatsch
package step2;

import org.eclipse.californium.core.CoapResource;
import org.eclipse.californium.core.CoapServer;
import org.eclipse.californium.core.server.resources.CoapExchange;

import static org.eclipse.californium.core.coap.CoAP.ResponseCode.*;

public class HelloWorld2 {

public static void main(String[] args) {

// binds on UDP port 5683
CoapServer server = new CoapServer();

// "hello"
server.add(new HelloResource());

// "subpath/Another"
CoapResource path = new CoapResource("subpath");
path.add(new AnotherResource());
server.add(path);

// "removeme!, "time", "writeme!"
server.add(new RemovableResource(), new TimeResource(), new WritableResource());

server.start();
}

public static class HelloResource extends CoapResource {
public HelloResource() {

// resource identifier
super("Hello");

// set display name
getAttributes().setTitle("Hello-World Resource");
}

@Override
public void handleGET(CoapExchange exchange) {
exchange.respond("Hello world!");
}
}

public static class AnotherResource extends CoapResource {
public AnotherResource() {

// resource identifier
super("Another");

// set display name
getAttributes().setTitle("Another Hello-World Resource");
}

@Override
public void handleGET(CoapExchange exchange) {
exchange.respond("Fun with CoAP!");
}
}

public static class RemovableResource extends CoapResource {
public RemovableResource() {
super("removeme!");
}

@Override
public void handleDELETE(CoapExchange exchange) {
delete();
exchange.respond(DELETED);
}
}

public static class TimeResource extends CoapResource {

public TimeResource() {
super("time");
}

@Override
public void handleGET(CoapExchange exchange) {
exchange.respond(String.valueOf(System.currentTimeMillis()));
}
}

public static class WritableResource extends CoapResource {

public String value = "to be replaced";

public WritableResource() {
super("writeme!");
}

@Override
public void handleGET(CoapExchange exchange) {
exchange.respond(value);
}

@Override
public void handlePUT(CoapExchange exchange) {
byte[] payload = exchange.getRequestPayload();

try {
value = new String(payload, "UTF-8");
exchange.respond(CHANGED, value);
} catch (Exception e) {
e.printStackTrace();
exchange.respond(BAD_REQUEST, "Invalid String");
}
}
}

}

</pre>

Client example
<pre>
// author : Matthias Kovatsch
package step3;

import org.eclipse.californium.core.CoapClient;
import org.eclipse.californium.core.CoapResponse;

public class HelloWorldClient {

public static void main(String[] args) {

CoapClient client = new CoapClient("coap://localhost/Hello");

CoapResponse response = client.get();

if (response!=null) {

System.out.println( response.getCode() );
System.out.println( response.getOptions() );
System.out.println( response.getResponseText() );

} else {

System.out.println("Request failed");

}
}

}
</pre>