1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.media.cts; 18 19import android.content.Context; 20import android.net.ConnectivityManager; 21import android.net.NetworkInfo; 22import android.net.Uri; 23import android.util.Log; 24 25import java.io.BufferedReader; 26import java.io.InputStreamReader; 27import java.io.IOException; 28import java.net.UnknownHostException; 29import java.util.ArrayList; 30 31/** 32 * A class that implements IConnectionStatus interface 33 * to report and test connection status. 34 */ 35public class ConnectionStatus implements IConnectionStatus { 36 37 private static final String TAG = "ConnectionStatus"; 38 39 private ConnectivityManager mConnectivityManager; 40 41 public ConnectionStatus(Context context) { 42 mConnectivityManager = 43 (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); 44 } 45 46 public String getNotConnectedReason() { 47 NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo(); 48 if (networkInfo != null) { 49 return networkInfo.getReason(); 50 } else { 51 return "Network info is not available."; 52 } 53 } 54 55 public boolean isAvailable() { 56 NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo(); 57 return (networkInfo != null) && networkInfo.isAvailable(); 58 } 59 60 public boolean isConnected() { 61 NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo(); 62 return (networkInfo != null) && networkInfo.isConnected(); 63 } 64 65 /** 66 * Print lines. 67 * 68 * Print lines in ArrayList<String> 69 * 70 * @param lines ArrayList<String> 71 */ 72 private void printLines(final ArrayList<String> lines) { 73 for (String line : lines) { 74 Log.d(TAG, line); 75 } 76 } 77 78 /** 79 * Perform ping test. 80 * 81 * @param server Server to ping 82 * @return true for success, false for failure 83 */ 84 private boolean pingTest(String server) { 85 final long PING_RETRIES = 10; 86 if (server == null || server.isEmpty()) { 87 Log.e(TAG, "Null or empty server name to ping."); 88 return false; 89 } 90 91 int retries = 0; 92 while (retries++ <= PING_RETRIES) { 93 try { 94 Log.d(TAG, "Try pinging " + server); 95 // -c: ping 5 times, -w: limit to 20 seconds 96 Process p = Runtime.getRuntime().exec("ping -c 5 -w 20 " + server); 97 ArrayList<String> lines = new ArrayList<String>(); 98 String line; 99 BufferedReader reader = new BufferedReader( 100 new InputStreamReader(p.getInputStream())); 101 while ((line = reader.readLine()) != null) { 102 lines.add(line); 103 } 104 printLines(lines); 105 lines.clear(); 106 107 // print error if any 108 reader = new BufferedReader( 109 new InputStreamReader(p.getErrorStream())); 110 while ((line = reader.readLine()) != null) { 111 lines.add(line); 112 } 113 printLines(lines); 114 if (p.waitFor() == 0) { 115 return true; 116 } 117 } catch (UnknownHostException e) { 118 Log.e(TAG, "ping not run: Unknown Host"); 119 break; 120 } catch (IOException e) { 121 // e.g. if ping is not on the device 122 Log.e(TAG, "ping not found: IOException"); 123 break; 124 } catch (InterruptedException e) { 125 Log.e(TAG, "ping failed: InterruptedException"); 126 break; 127 } 128 } 129 130 // ping test timeout 131 return false; 132 } 133 134 public void testConnection(Uri uri) { 135 if (pingTest(uri.getHost())) { 136 Log.d(TAG, "Successfully pinged " + uri.getHost()); 137 } else { 138 Log.e(TAG, "Failed to ping " + uri.getHost()); 139 } 140 } 141} 142 143