Android Open Source - bitfynd-wallet-android Http Get Thread

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright 2013-2014 the original author or authors.
 */*from  w  w w. j  a va 2s.co  m*/
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyStore;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.content.res.AssetManager;

import com.google.common.base.Charsets;

import de.schildbach.wallet.Constants;

/**
 * @author Andreas Schildbach
 */
public abstract class HttpGetThread extends Thread
{
  private final AssetManager assets;
  private final String url;
  @CheckForNull
  private final String userAgent;

  private static final Logger log = LoggerFactory.getLogger(HttpGetThread.class);

  public HttpGetThread(@Nonnull final AssetManager assets, @Nonnull final String url, @Nullable final String userAgent)
  {
    this.assets = assets;
    this.url = url;
    this.userAgent = userAgent;
  }

  @Override
  public void run()
  {
    HttpURLConnection connection = null;

    log.debug("querying \"" + url + "\"...");

    try
    {
      connection = (HttpURLConnection) new URL(url).openConnection();

      if (connection instanceof HttpsURLConnection)
      {
        final InputStream keystoreInputStream = assets.open("ssl-keystore");

        final KeyStore keystore = KeyStore.getInstance("BKS");
        keystore.load(keystoreInputStream, "password".toCharArray());
        keystoreInputStream.close();

        final TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
        tmf.init(keystore);

        final SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(null, tmf.getTrustManagers(), null);

        ((HttpsURLConnection) connection).setSSLSocketFactory(sslContext.getSocketFactory());
      }

      connection.setInstanceFollowRedirects(false);
      connection.setConnectTimeout(Constants.HTTP_TIMEOUT_MS);
      connection.setReadTimeout(Constants.HTTP_TIMEOUT_MS);
      connection.setRequestProperty("Accept-Charset", "utf-8");
      if (userAgent != null)
        connection.addRequestProperty("User-Agent", userAgent);
      connection.connect();

      if (connection.getResponseCode() == HttpURLConnection.HTTP_OK)
      {
        final long serverTime = connection.getDate();
        // TODO parse connection.getContentType() for charset

        final BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charsets.UTF_8), 64);
        final String line = reader.readLine().trim();
        reader.close();

        handleLine(line, serverTime);
      }
    }
    catch (final Exception x)
    {
      handleException(x);
    }
    finally
    {
      if (connection != null)
        connection.disconnect();
    }
  }

  protected abstract void handleLine(@Nonnull String line, long serverTime);

  protected abstract void handleException(@Nonnull Exception x);
}

Java Source Code List

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