Java tutorial
/** * Copyright (C) 2011 Whisper Systems * * 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 org.thoughtcrime.securesms.mms; import java.io.DataInputStream; import java.io.IOException; import java.net.InetAddress; import org.apache.http.HttpEntity; import org.apache.http.HttpHost; import org.apache.http.client.HttpClient; import org.apache.http.client.params.HttpClientParams; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.params.ConnRouteParams; 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.conn.ssl.SSLSocketFactory; 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.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.apache.http.params.HttpProtocolParams; import org.thoughtcrime.securesms.database.DatabaseFactory; import org.thoughtcrime.securesms.service.MmsDownloader; import org.thoughtcrime.securesms.util.Conversions; import ws.com.google.android.mms.MmsException; import android.content.Context; import android.database.Cursor; import android.net.ConnectivityManager; import android.net.Uri; public class MmsCommunication { protected static MmsConnectionParameters getMmsConnectionParameters(Context context) throws MmsException { Cursor cursor = DatabaseFactory.getMmsDatabase(context).getCarrierMmsInformation(); try { if (cursor == null || !cursor.moveToFirst()) throw new MmsException("No carrier MMS information available."); do { String mmsc = cursor.getString(cursor.getColumnIndexOrThrow("mmsc")); String proxy = cursor.getString(cursor.getColumnIndexOrThrow("mmsproxy")); String port = cursor.getString(cursor.getColumnIndexOrThrow("mmsport")); if (mmsc != null && !mmsc.equals("")) return new MmsConnectionParameters(mmsc, proxy, port); } while (cursor.moveToNext()); throw new MmsException("No carrier MMS information available."); } finally { if (cursor != null) cursor.close(); } } protected static void checkRouteToHost(Context context, MmsConnectionParameters parameters, String url) throws IOException { if (parameters == null || !parameters.hasProxy()) checkRouteToHost(context, Uri.parse(url).getHost()); else checkRouteToHost(context, parameters.getProxy()); } private static void checkRouteToHost(Context context, String host) throws IOException { InetAddress inetAddress = InetAddress.getByName(host); byte[] ipAddressBytes = inetAddress.getAddress(); int ipAddress = Conversions.byteArrayToIntLittleEndian(ipAddressBytes, 0); ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (!manager.requestRouteToHost(MmsDownloader.TYPE_MOBILE_MMS, ipAddress)) throw new IOException("Connection manager could not obtain route to host."); // if (!manager.requestRouteToHost(ConnectivityManager.TYPE_MOBILE, ipAddress)) // throw new IOException("Connection manager could not obtain route to host."); } protected static HttpClient constructHttpClient(MmsConnectionParameters mmsConfig) { HttpParams params = new BasicHttpParams(); HttpConnectionParams.setStaleCheckingEnabled(params, false); HttpConnectionParams.setConnectionTimeout(params, 20 * 1000); HttpConnectionParams.setSoTimeout(params, 20 * 1000); HttpConnectionParams.setSocketBufferSize(params, 8192); HttpClientParams.setRedirecting(params, false); HttpProtocolParams.setUserAgent(params, "TextSecure/0.1"); HttpProtocolParams.setContentCharset(params, "UTF-8"); if (mmsConfig.hasProxy()) { ConnRouteParams.setDefaultProxy(params, new HttpHost(mmsConfig.getProxy(), mmsConfig.getPort())); } SchemeRegistry schemeRegistry = new SchemeRegistry(); schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); schemeRegistry.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443)); ClientConnectionManager manager = new ThreadSafeClientConnManager(params, schemeRegistry); return new DefaultHttpClient(manager, params); } protected static byte[] parseResponse(HttpEntity entity) throws IOException { if (entity == null || entity.getContentLength() == 0) throw new IOException("Null response"); byte[] responseBytes = new byte[(int) entity.getContentLength()]; DataInputStream dataInputStream = new DataInputStream(entity.getContent()); dataInputStream.readFully(responseBytes); dataInputStream.close(); entity.consumeContent(); return responseBytes; } protected static class MmsConnectionParameters { private final String mmsc; private final String proxy; private final String port; public MmsConnectionParameters(String mmsc, String proxy, String port) { this.mmsc = mmsc; this.proxy = proxy; this.port = port; } public boolean hasProxy() { return proxy != null && proxy.trim().length() != 0; } public String getMmsc() { return mmsc; } public String getProxy() { return proxy; } public int getPort() { if (port == null || port.trim().length() == 0) return 80; return Integer.parseInt(port); } } }