HttpComponentsHelper.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.rwesmarthome.internal.communicator.util;

import org.apache.http.HttpVersion;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnManagerPNames;
import org.apache.http.conn.params.ConnPerRouteBean;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;

/*
 * This code is public domain: you are free to use, link and/or modify it in any
 * way you want, for all purposes including commercial applications.
 */
/**
 * Helper for HTTP client.
 *
 */
public class HttpComponentsHelper {
    // members
    private ClientConnectionManager clientConnectionManager;
    private HttpContext context;
    private HttpParams params;

    /**
     * Returns a new HTTPClient.
     * 
     * @return
     */
    public HttpClient getNewHttpClient() {
        setup();
        return new DefaultHttpClient(clientConnectionManager, params);
    }

    /**
     * prepare for the https connection
     * call this in the constructor of the class that does the connection if
     * it's used multiple times
     */
    private void setup() {
        SchemeRegistry schemeRegistry = new SchemeRegistry();

        // http scheme
        schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
        // https scheme
        schemeRegistry.register(new Scheme("https", new EasySSLSocketFactory(), 443));

        params = new BasicHttpParams();
        params.setParameter(ConnManagerPNames.MAX_TOTAL_CONNECTIONS, 1);
        params.setParameter(ConnManagerPNames.MAX_CONNECTIONS_PER_ROUTE, new ConnPerRouteBean(1));
        params.setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, false);
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        HttpProtocolParams.setContentCharset(params, "utf8");

        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        // set the user credentials for our site "example.com"
        credentialsProvider.setCredentials(new AuthScope("example.com", AuthScope.ANY_PORT),
                new UsernamePasswordCredentials("UserNameHere", "UserPasswordHere"));
        clientConnectionManager = new ThreadSafeClientConnManager(params, schemeRegistry);

        context = new BasicHttpContext();
        context.setAttribute("http.auth.credentials-provider", credentialsProvider);
    }
}