PiCoapClient.java

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/* Copyright 2013 Eric Ptak - trouch.com
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
*/

package com.trouch.webiopi.client;

import com.trouch.coap.client.CoapClient;
import com.trouch.coap.messages.CoapRequest;
import com.trouch.coap.messages.CoapResponse;
import com.trouch.coap.methods.CoapGet;
import com.trouch.coap.methods.CoapPost;


public class PiCoapClient extends PiClient {
    public final static int DEFAULT_PORT = 5683;
    private CoapClient client;

    public PiCoapClient(String host) {
        super("coap", host, DEFAULT_PORT);
        client = new CoapClient();
    }

    public PiCoapClient(String host, int port) {
        super("coap", host, port);
        client = new CoapClient();
    }

    @Override
    public String sendRequest(String method, String path) throws Exception {
        CoapRequest request;
        if (method == "GET") {
            request = new CoapGet(this.urlBase + path);
        }
        else if (method == "POST") {
            request = new CoapPost(this.urlBase + path);
        }
        else throw new Exception("Method not supported: " + method);
        
        CoapResponse response = client.sendRequest(request);
        if (response != null) {
            return response.getPayload();
        }
        
        return null;
    }

}